Construction technology method of large-scale lead pipe roofs of tunnels and underground engineering without workshops

The invention provides a construction technology method of large-scale lead pipe roofs of tunnels and underground engineering without workshops, which comprises the following steps: drilling shallow holes on a grout-stopping wall (2) by utilizing a drilling machine (4) according to design parameters in a designed tunnel excavation contour line (1), installing a pipe roof guide pipe (6), drilling a pipe roof hole (9) to the designed hole depth through the guide pipe (6), retrieving a drilling rod (3), and removing a drilling head (5); connecting the drilling rod (3) with a large pipe roof through a pipe roof connecting piece (10), and sequentially pushing the large pipe roof (9) into a pipe roof hole (8) section by section through impact rotation; when the last pipe roof (14) is pushed, reloading a top pipe roof pusher (13) for directly pushing the pipe roof to the outside of the tunnel excavation contour line (1), and finally, carrying out grouting construction; and carrying out construction ...

Viscose artificial silk continuous spinning technique and continuous spinning machine

SYSTEMS AND METHODS FOR OSSIFICATION CENTER DETECTION AND BONE AGE ASSESSMENT

Systems and methods for ossification center detection (OCD) and bone age assessment (BAA) may be provided. The method may include obtaining a bone age image of a subject. The method may include generating a normalized bone age image by preprocessing the bone age image. The method may include determining, based on the normalized bone age image, positions of a plurality of ossification centers using an ossification center localization (OCL) model. The method may include estimating, based on the normalized bone age image and information related to the positions of the plurality of ossification centers, a bone age of the subject using a bone age assessment (BAA) model.

Multi-pipeline collator for emergency critical patient

The utility model discloses a multi-pipeline collator for an emergency critical patient. At least two groups of clamping holes are formed in the upper surface or the lower surface of the clamping plate; each group of clamping holes is divided into a large clamping hole, a middle clamping hole and a small clamping hole from left to right; omega-shaped cross sections, adhesive tapes are arranged onthe inner circumferences of the large clamping hole, the middle clamping hole and the small clamping hole; an anti-falling block is arranged on one side of the inlet/outlet of the omega-shaped adhesive tape; a pair of edge blocks are arranged at upper and lower ends of one side of the clamping plate; a horizontal positioning plate is arranged on one side of the edge block; chucks are arranged at the end parts of the opposite surfaces of the pair of positioning plates; the upper end and the lower end of the other side of each clamping plate are each provided with a pair of inwards-concave clamping ...

Gas-liquid mixing and stirring device based on dynamic air distribution

The invention provides a gas-liquid mixing and stirring device based on dynamic air distribution. The gas-liquid mixing and stirring device comprises a stirring shaft, an upper cover plate, a lower cover plate, blades, an air distribution block, an air inlet ring and an air inlet pipe, the upper cover plate is annular, the stirring shaft penetrates through an inner ring of the upper cover plate and then is fixed on the lower cover plate, and the plurality of blades are arranged between the upper cover plate and the lower cover plate and are uniformly distributed along the circumferential direction; the multiple air distribution blocks are fixed to the lower cover plate and located in the radial inner side areas of the multiple blades. A plurality of through grooves are formed in the lower cover plate, an air channel is formed in the air distribution block, an air outlet groove is formed in the end face, located on the radial outer side, of the air distribution block, and the through grooves ...

Construction technology method of large-scale lead pipe roofs of tunnels and underground engineering without workshops

The invention provides a construction technology method of large-scale lead pipe roofs of tunnels and underground engineering without workshops, which comprises the following steps: drilling shallow holes on a grout-stopping wall (2) by utilizing a drilling machine (4) according to design parameters in a designed tunnel excavation contour line (1), installing a pipe roof guide pipe (6), drilling a pipe roof hole (9) to the designed hole depth through the guide pipe (6), retrieving a drilling rod (3), and removing a drilling head (5); connecting the drilling rod (3) with a large pipe roof through a pipe roof connecting piece (10), and sequentially pushing the large pipe roof (9) into a pipe roof hole (8) section by section through impact rotation; when the last pipe roof (14) is pushed, reloading a top pipe roof pusher (13) for directly pushing the pipe roof to the outside of the tunnel excavation contour line (1), and finally, carrying out grouting construction; and carrying out construction ...

Gas stripping and photocatalytic oxidation sewage treatment equipment

Separation system and separation method of low-carbon mixed alcohol

The invention discloses a separation system and a separation method of low-carbon mixed alcohol. The separation system comprises a low-carbon mixed alcohol feeding device, a methanol rectifying tower, an ethanol rectifying tower, an extraction rectifying tower and a normal propyl alcohol rectifying tower, wherein the low-carbon mixed alcohol feeding device is provided with a low-carbon mixed alcohol outlet; the methanol rectifying tower is provided with a methanol tower feeding hole, a methanol tower top discharging hole and a methanol tower bottom discharging hole, and the methanol tower feeding hole is connected with the low-carbon mixed alcohol outlet; the ethanol rectifying tower is provided with an ethanol tower feeding hole, an ethanol tower top discharging hole and an ethanol tower bottom discharging hole, and the ethanol tower feeding hole is connected with the methanol tower bottom discharging hole; the extraction rectifying tower is provided with an extraction tower feeding hole ...

Image steganography method based on diffusion probability model

The invention provides an image steganography method based on a diffusion probability model. The image steganography method comprises the following steps: S1, a training stage 1: training the diffusion probability model to generate a carrier image set; s2, in a training stage 2, training a message extractor to establish message-carrier set mapping; s3, in a use stage 1, hiding a secret message; and S4, extracting secret information in a using stage 2, and enabling the generated image to contain the secret information by combining a message extractor of the image with a convolutional neural network structure on the basis that any generator of a diffusion probability model for generating the image is directly driven by Gaussian noise. Besides, by means of the advantage of step-by-step iteration of the diffusion probability model, distortion of the generated image caused by reconstruction is avoided, and the training stability has higher image quality compared with a generator constructed ...

Shield propulsion unit target thrust calculation method and system based on plane equation

The invention relates to a method and a system for calculating target thrust of a shield propulsion unit based on a plane equation. The method comprises the following steps: establishing a space rectangular coordinate system O-XYZ on a mounting surface of a shield propulsion system of a shield tunneling machine; determining the angle of the target total thrust point P in the plane XOY, and selecting a characteristic propulsion unit in a first quadrant or a second quadrant of the plane XOY; establishing a local coordinate system xOy, and setting a target thrust zi for each propulsion unit: zi = z0 + kli, (i = 1-n); the target thrust of the propulsion units is set in a thrust plane, the values of z0 and k are obtained based on the plane equation of the thrust plane, and then the target thrust of each propulsion unit is obtained according to the formula that zi = z0 + kli. The target thrust of each propulsion unit of the propulsion system is enabled to be in the same plane, so that the difference ...

Image steganography method based on diffusion model

The invention provides an image steganography method based on a diffusion model, and the method comprises the steps: training a diffusion probability model through a real image sample set, and obtaining an image generation model; embedding images in the real image sample set into the image generation model to obtain a secret-containing image; and extracting the secret-containing image by using the image generation model, obtaining a message image, and completing image steganography. According to the method, diffusion models are respectively trained by using two types of data sets to obtain two diffusion models, and then the two diffusion models are subjected to different serial combinations to realize embedding and extraction of messages, particularly, the method does not need an original carrier as a reference, and the messages can be subjected to image messages, so that the embedding and extraction efficiency of the messages is improved. And high-capacity steganography is realized by ...

Dual-fluid synchronous slip casting and cleaning switching mechanism

The invention discloses a dual-liquid synchronous slurry injecting, cleaning and switching device, which comprises a slurry injection main pipeline, an outlet pipe, a switching valve core, a cleaning oil cylinder and a cleaning water pipe, wherein the slurry injection main pipeline comprises a mixing pipe used for supplying dual-slurry liquid and a plurality of slurry pipes which are connected with the mixing pipe; the heads and the tails of the slurry pipes are linked in sequence; the outlet pipe is an outlet of the slurry liquid, and the pipe wall is provided with through holes; the through holes are communicated with the outlet ends of the slurry pipes; the switching valve core is arranged in the pipe cavity of the outlet pipe in a way of sliding fit, and the pipe wall is provided with a plurality of water discharging holes; the water discharging holes can be blocked or communicated with the through holes of the outlet pipe through the axial slide of the switching valve core; the cleaning ...

Continuous production process of tetrabromobisphenol A

The invention provides a continuous production process of tetrabromobisphenol A. The continuous production process is characterized by comprising the following steps: in the presence of a hydrogen peroxide aqueous solution, adding bromine, bisphenol A and sulfuric acid into dichloromethane, and carrying out bromination reaction to prepare a tetrabromobisphenol A solution; performing curing reaction on the tetrabromobisphenol A solution, and then performing phase splitting; adding a sodium sulfite solution into the organic phase, carrying out neutralization reaction, splitting phases, washing the organic phase with water, and carrying out evaporative crystallization to obtain a finished product tetrabromobisphenol A; dichloromethane steam generated by the bromination reaction is introduced into the evaporative crystallization process to serve as a heat source to gasify the crystallization liquid. According to the continuous production process disclosed by the invention, reaction heat is ...

Cloud computing data security boundary protection method

The invention discloses a cloud computing data security boundary protection method. The cloud computing data security boundary protection method comprises the steps that a cloud service request instruction sent by a user is received, and a data structure and safety parameters of a system are initialized and sent to the user; the user generates a secret key message; the user sends a data storage request, the header information of the metadata of the data storage request is generated, and a cloud data center initializes a plain data append tree; the user generates and sends an encrypted data block to the cloud data center; the cloud data center maintains the plain data append tree in real time according to the serial number and version number of the data block; the user executes security boundary verification and append operation of data on the plain data append tree by utilizing the secret key information of the user. The cloud computing data center of a cloud server terminal not only provides ...

Lining assembling machine having pressure type total leak-proof fuel cell

The lining and assembling machine with pressurized sealed oil tank belongs to tunnel engineering constructing machinery. The connecting mode includes setting the cantilever beam and the oil tank cantilever beam in the same side of the disk, driving the disk with the rotating driver, setting the electric control assembly on the top of the oil tank steel structure, setting the hydraulic pump set on the top of the oil tank cantilever beam, setting the pressurized sealed oil tank inside the steel structure of the oil tank steel structure, welding the guide barrel on one side of the cantilever beam, fixing the elevating oil cylinder onto the outside of the guide barrel, setting the elevating beam below the elevating oil cylinder, screwing the translating mechanism in the lower part of the elevating beam, setting the translating oil cylinder in the middle of the translating mechanism, and setting two pipe wrench beside the translating oil cylinder. The present invention has simple structure and ...

A ultrasonic ranging equipment for tunnel

The utility model provides an ultrasonic ranging equipment for tunnel, including ultrasonic ranging appearance and strutting arrangement, wherein strutting arrangement has the roof that is used for with the lining cutting contact in tunnel, the setting is used for placing the transmitter of ultrasonic ranging appearance and processing unit's box body the lower extreme of roof, the setting is at the setting element that is used for placing the transmitting probe of ultrasonic ranging appearance of the lower extreme of roof, the setting the lower extreme of roof be used for place the ultrasonic ranging appearance the receiving transducer hold the piece, wherein, the setting element department on the roof sets up first opening, the department that holds on the roof is provided with the second opening. Through this ultrasonic ranging equipment can be convenient, swift measurement tunnel lining's concrete thickness.

Processing method for high-pressure water-enriched filling karst cavity

The invention discloses a processing method for a high-pressure water-enriched filling karst cavity, comprising the steps of finding out a filling karst cavity through a former geologic predicting report, analyzing the karst characteristic of the found filling karst cavity, locking the proximity borderlines of the filling karst cavity according to the analysis result of the karst characteristic of the filling karst cavity, opening the filling karst cavity at the proximity borderlines of the filling karst cavity and releasing the water-soil pressure in the filling karst cavity. The technical scheme of the invention can effectively avoid the phenomena of water-inrush and soil-inrush generated in the filling karst cavity by directly decreasing the pressure of the filling karst cavity, and improving the safety and reliability during the tunneling and the tunnel operation.

Gas stripping and photocatalytic oxidation sewage treatment equipment

The present invention discloses a sewage treatment equipment by using gas stripping and photocatalytic oxidation. Said equipment includes sewage pump, gas stripping tower, photocatalytic oxidizing device and fan, in which the gas and liquid distributor and corrugated packing being in the gas stripping tower are favourable for extracting the harmful material from sewage, and the gas carrying harmful material can be fed into the photocatalytic oxidizing device from the top of tower, and under the action of photocatalysis of UV-light and TiO2 and ZnO catalysts the harmful material can be decomposed into the small molecular harmless substances of H2O, CO2 and CO, etc. so as to implement purification treatment of sewage. Said invention does not produce secondary pollution, and its treatment efficiency is high.

Method and device for separating 1, 2, 3-trimethylbenzene

The invention discloses a method and device for separating 1,2,3-trimethylbenzene, wherein the light removing tower employs negative pressure operation, while the product tower employs pressurization operation, the gaseous phase exhaust port on the top of the product tower is connected with the re-boiling device on the bottom of the light removing tower.

Anti-seismic waterproof flexible structure for shield tunnel segment joint

The invention provides an anti-seismic waterproof flexible structure for a shield tunnel segment joint, which comprises a rubber contact pad and an inter-ring flexible joint which are arranged on the side walls, facing a circular seam, of two adjacent rings of shield segments, the inter-ring flexible joint comprises a rubber composite steel bolt connecting piece and a shape memory alloy bolt connecting piece which are arranged at the circular seam of two adjacent shield segments at intervals, and the rubber composite steel bolt connecting piece comprises a rubber composite steel bolt and a steel bolt sleeve matched with the rubber composite steel bolt. The rubber composite steel bolt comprises a high-performance bolt and a rubber layer wrapping the periphery of the high-performance bolt, and the shape memory alloy bolt connecting piece comprises a shape memory alloy bolt and a bolt sleeve matched with the shape memory alloy bolt. By arranging the full-ring rubber contact pad at the circular ...

Self -balancing heat pipe formula isothermal reactor

The utility model discloses a self -balancing heat pipe formula isothermal reactor, the novel nipple rectifier comprises a cylindrical shel, a left side, right seal head, set gradually firstly in nearly left head one end, two left tube sheets, be provided with right tube sheet in nearly right seal head one end, be provided with right diaphragm between right tube sheet and right seal head, first, be provided with left diaphragm between the two left tube sheets, the heat exchange tube sets up on a left side, on the second left side tube sheet and right tube sheet more than the diaphragm of the right side, the outer tube is fixed to be set up on a left side, on the second left side tube sheet and right tube sheet below the diaphragm of the right side, the inner tube sets up within the outer tube, the inner tube right -hand member is the cecum, the left end is connected with first left tube sheet, the inner tube sets up porosely, coolant import in being provided with the shell on the top wall ...

Lining treatment method for TBM tunneling snakelike operation and application method

The invention belongs to the technical field of TBM construction, and discloses a TBM tunneling snakelike operation lining treatment method and an application method.The TBM tunneling snakelike operation lining treatment method comprises the steps that the actual clearance condition and the underthickness condition of a secondary lining are determined by comparing the measurement result of a 3D laser section scanner on a primary support section with design section parameters; and meanwhile, the lining trolley is machined by optimizing the inner contour of the lining trolley, the transition mode of the inner contour and the transition range height, and the lining section of the TBM construction section is adjusted. According to the method, by adjusting the lining section of the construction section of the TBM, the work amount of TBM snakelike motion treatment can be reduced, the treatment efficiency is improved, the safety risk is reduced, and meanwhile excessive economic investment is not ...

Determination method, system, equipment and terminal for allowable water inflow of water-rich depth vertical shaft

The invention belongs to the technical field of tunnel vertical shaft construction, and discloses a method, a system, equipment and a terminal for determining the allowable water inflow of a water-rich depth vertical shaft, a relation curve of the water inflow of a vertical shaft excavation working face and the excavation progress is established, regression analysis is carried out, and a standard of the allowable water inflow of the vertical shaft excavation working face is established; establishing a vertical shaft working face advanced manhole allowable water inflow standard; a vertical shaft working face pre-grouting scheme is designed, the grouting water plugging rate and the drilling grouting utilization rate are calculated, and vertical shaft grouting evaluation technical indexes are established; and inspection holes are arranged, a vertical shaft working face grouting inspection hole allowable water inflow standard is established, and after grouting is completed, the water-rich depth ...

Exhaust treatment device who contains volatile organic compounds

The utility model discloses an exhaust treatment device who contains volatile organic compounds, including waste gas absorption tower, waste gas desorber, cooler, heat exchanger, overhead condenser, centrifugal pump, circulating pump, phase splitter, phegma storage tank, waste gas is discharged by the waste gas absorption tower top of the tower by waste gas absorption tower lower part, purified gas, the pipeline that comes from waste gas absorption tower bottom is connected with waste gas desorber upper portion behind centrifugal pump, heat exchanger, phase splitter, the pipeline that comes from waste gas desorber bottom is connected with circulating pump, heat exchanger, cooler, phase splitter in proper order and then is connected with the upper portion of waste gas absorption tower, the absorbent adopt the boiling point be higher than more than 150 DEG C with the immiscible solvent of water, absorb the absorption liquid circulated use after the desorption in the desorber behind the waste ...

Identity based aggregate signcryption method

The invention discloses an identify based aggregate signcryption method. The identify based aggregate signcryption method includes the following steps that (1) a key management center sets system public parameters and produces user keys; (2) each sending party signcrypts respective data to produce a signcryption text; (3) an aggregate party aggregates all signcryption texts to produce aggregated signcryption texts; (4) a receiving party verifies the aggregated signcryption texts. According to the identify based aggregate signcryption method, three parameters in the signcryption texts of each sending party are aggregated, and the data size of the entire signcryption texts is totally the same as that of a single signcryption text; meanwhile, the receiving party can achieve verification of all the signcryption texts only through once verification operation, and the calculated amount of the verification of all the signcryption texts is basically equivalent to that of the verification of the ...

Exhaust treatment device who contains volatile organic compounds

The utility model discloses an exhaust treatment device who contains volatile organic compounds, including the waste gas absorption tower, waste gas passes through pipeline and waste gas absorption tower sub -unit connection, and the top of waste gas absorption tower is provided with the purified gas discharge pipe, the absorbent basin passes through the pipeline and is connected with the upper portion of waste gas absorption tower, the bottom of waste gas absorption tower is passed through the pipeline and is connected with the upper portion of centrifugal pump, heat exchanger, phase splitter, waste gas desorber in proper order, waste gas desorber bottom divides two the tunnel after being connected through reboiler at the bottom of pipeline and the tower, goes the same way and the sub -unit connection of waste gas desorber, and another way is connected with circulating pump, heat exchanger, cooler in proper order and then is connected with the upper portion of waste gas absorption tower ...

Agent re-encryption method used for group traffic

The invention provides an agent re-encryption method used for group traffic. The method comprises the following steps: step one: a sender sets safety parameters and broadcasts the safety parameters to all users; step two: a private key is independently selected, and a public key is generated according to the private key and the public key is disclosed; step three: a Hash function operation and a bilinear pairing operation are performed on a clear text to be encrypted according to the safety parameters and the public key of a principal so that a first-level cipher text is generated; step four: a re-encryption secrete key is generated by the sender according to the safety parameters and the public key of an agent and the re-encryption secrete key is sent to the third part agent; step five: the first-level cipher text is re-encrypted by the third part agent according to the re-encryption secrete key so that a second-level cipher text is generated and sent to the agent; and step six: the principal ...

Construction method and device for parallel lining during TBM tunneling

The invention belongs to the technical field of tunnel construction, and discloses a construction method and device for parallel lining during TBM tunneling, a waterproof plate rack is used for laying and hanging non-woven fabrics and waterproof plates, and is used for removing an air pipe and a belt conveyor muck discharging device which influence the lining; the telescopic supporting racks are arranged between the waterproof plate rack and the lining trolley and between the repairing rack and the lining trolley and used for supporting the belt conveyor to discharge slag after the repairing rack and the lining trolley walk; the lining trolley is used for arranging a slideway bearing bracket and supporting the belt muck discharging device; the repairing rack is arranged on the rear side of the lining trolley and used for maintaining and repairing a concrete surface, hanging an air pipe and installing a belt conveyor support. And the belt muck discharging device is used for supporting the ...

Information tracking grouting method

The embodiment of the invention provides an information tracking grouting method, comprising the following steps of: detecting stratum information through a probe hole arranged on the stratum, and dividing the stratum into a strong water area and a weak water area according to the stratum information; carrying out basic grouting in the weak area; carrying out reinforced grouting in the strong water area; and checking the grouting effect. In the information tracking grouting method of the embodiment of the invention, the stratum information can be detected through the probe hole arranged on the stratum to determine the stratum information, and grouting and water plugging are carried out with pertinence according to the stratum information, thereby the grouting and water plugging as well as the strengthening effect are ensured, the amount of grouting wells is reduced, and the grouting efficiency is remarkably improved.

Oxygen pressure leaching method and equipment

The invention discloses an oxygen pressure leaching method and equipment, and the oxygen pressure leaching method at least comprises a section of oxygen pressure leaching process. The first-stage oxygen pressure leaching process comprises the steps of ore grinding underflow pretreatment, first-stage oxygen pressure leaching treatment, first-stage slurry heat exchange pressure reduction, first-stage slurry gas separation and first-stage slurry separation to obtain first-stage dense supernate and first-stage dense underflow. Compared with the prior art, the method has the advantages that the consumption of oxygen and steam can be effectively reduced, the use amount of steam can be reduced by 70-100% when the first-stage oxygen pressure leaching process is adopted, and the use amount of oxygen can be reduced by 27.5-36% and the use amount of steam can be reduced by 58-100% when the second-stage oxygen pressure leaching process is adopted.

Determination method and system for reasonable length of grouting circulation of water-rich depth vertical shaft and terminal

The invention belongs to the technical field of tunnel engineering construction, and discloses a method, a system and a terminal for determining the reasonable grouting cycle length of a water-rich vertical shaft, and when working face advanced pre-grouting is adopted for the water-rich vertical shaft, different grouting cycle lengths are adopted for testing; measuring the water inflow of the inspection hole after grouting, and calculating the maximum value of the grouting cycle length; and the grouting water plugging rate under various grouting circulation lengths, the drilling grouting circulation time and the drilling progress under different drilling depth conditions are counted, the comprehensive well completion efficiency under different grouting section lengths is analyzed, a change curve is drawn, and the reasonable grouting circulation length of the water-rich depth vertical shaft is determined to be 60 m. According to the method for determining the reasonable length of the grouting ...

Pressure monitoring device and method for monitoring pressure of tunnel lining concrete

The invention relates to a pressure monitoring device and a method for monitoring the pressure of tunnel lining concrete. The pressure monitoring device is used for the tunnel lining concrete and comprises a container, a cover and a pressure sensor, fluid is contained inside the container in a sealed mode, and the container comprises a first element and a second element, wherein the first element makes contact with the lower surface of the tunnel lining concrete, and the second element and the first element are buckled to form the container. An injection opening and a connecting opening are formed in the second element, the cover is arranged at the injection opening in a sealing mode, and the pressure sensor is arranged at the connecting opening in a sealing mode and is of a structure which can sense the pressure of the fluid inside the container. The pressure monitoring device can accurately monitor the pouring pressure of the concrete at any time, which is beneficial to judging the pouring ...

Low-concentration DMF salinity wastewater solvent recycling system

The invention discloses a low-concentration DMF salinity wastewater solvent recycling system. A plurality of evaporators and rectifying towers are combined into an evaporation distillation system, and corresponding reboilers, cooling systems, reverse-flow systems, negative pressure systems and salt outputting systems are configured. Double-effect or multi-effect distillation and evaporation are adopted to process low-concentration DMF salinity wastewater. The steam at the tower top of the previous-effect rectifying tower serves as the heat source of the evaporator of the next-effect rectifying tower by setting the operating pressure of all-effects rectifying towers so as to effectively utilize the potential condensation heat of the pervious-effect steam. According to the low-concentration DMF salinity wastewater solvent recycling system, the evaporators and the rectifying towers are combined, the multi-effect evaporation distillation system is proposed, the problem of tower blocking in ...

Viscose artificial silk continuous spinning technique and continuous spinning machine

Rectangular tunnel segment steel die

The invention relates to a rectangular tunnel segment steel die. The rectangular tunnel segment steel die comprises a bottom die, side dies and end dies, wherein the bottom die, the side dies and the end dies are in enclosed connection; every two of the bottom die, the side dies and the end dies are connected and fixed through a locking structure; each locking structure comprises a limit sleeve, a first nut embedded in the limit sleeve and a first bolt matched with the first nut, the limit sleeve is fixed on the bottom die, the corresponding end die or the corresponding side die and limits rotation of the first nut, and an elastic stop ring is arranged at the end part of the limit sleeve. Templates are connected through matching of the first bolts and the first nuts, and simplicity and convenience are achieved; each first nut is embedded into the corresponding limit sleeve and is fixed through the corresponding elastic stop ring, if the first nut is damaged during use of the steel die, ...

Rectangular shield machine and control method thereof

The invention discloses a rectangular shield machine and a control method thereof. A cutterhead device comprises a first cutterhead and a second cutterhead, an eccentric multi-axis special-shape cutterhead, a first cutterhead driver, a second cutterhead driver and an eccentric multi-axis special-shape cutterhead driver, wherein the first cutterhead and the second cutterhead are arranged on a front-section shell according to a set angle difference; the eccentric multi-axis special-shape cutterhead is arranged behind the first cutterhead and the second cutterhead; the first cutterhead driver is used for driving the first cutterhead to do circular motion; the second cutterhead driver is used for driving the second cutterhead to do circular motion; the eccentric multi-axis special-shape cutterhead driver is used for driving the eccentric multi-axis special-shape cutterhead to do eccentric rotary motion; the first cutterhead and the second cutterhead are X-shaped spoke type structured cutterheads ...

A reactor for alkylate is synthetic

The utility model discloses a reactor for alkylate is synthetic, reactor barrel be by straight section of thick bamboo section, width footpath section with lie in straight section of thick bamboo section and form with the changeover portion between the section of wide footpath, be provided with tube sheet under the inner tube in a straight section of thick bamboo section lower part, be provided with tube sheet under the outer tube more than inner tube low tube board, be provided with the tube sheet in handing -over department of straight section and changeover portion, the upper end of downspout and lower extreme respectively with last tube sheet and outer tube under the tube sheet be connected, outer tube upper end and lower extreme respectively with last tube sheet and outer tube under the tube sheet be connected, the inner tube setting is inside the outer tube, the upper end of inner tube is the cecum, the tube sheet is connected under the lower extreme of inner tube and the inner tube ...

Tunnel information tracing accurate grouting method

The invention relates to the field of tunnel grouting, in particular to a tunnel information tracing accurate grouting method, which solves the problems of thick reinforcing ring, large number of drilled holes, long construction period and the like of the traditional curtain grouting method adopted in current tunnel grouting. The method comprises the processes of grout stopping wall building, arrangement of orifice tubes and grouting tubes, measurement of the water burst of a drill hole, packer test, hole arrangement, drilling operation and grouting, wherein the hole arrangement and the grouting are performed according to the sequence from an advance geological drill hole to other outer ring holes to an inner ring hole to a working surface stabilizing hole to an access hole to a pipe-shed hole; and steps such as advance big pipe-shed construction of a working chamber and working surface stabilization by using a glass fiber anchor rod are saved. In the invention, a break through is made ...

Isothermal reactor suitable for strong exothermal reaction

The utility model relates to an isothermal reactor suitable for strong exothermal reaction. The reactor main part is equipped with upper and lower head, advances, discharge gate and coolant import and export, is equipped with a cuff pipe in the reactor main part at least, and every cuff pipe comprises nested within each other's outer tube and inner tube, and on the upper and lower fixed plate in the reactor main part was fixed at the outer tube both ends, the inner tube lower extreme was fixed at the inner tube fixed plate that lies in outer tube bottom plate below, inner tube lower extreme opening, upper end seal and outer tube an upper fixed plate leave the distance within a definite time, the inner tube lateral wall lies in the outer tube bottom plate division has a liquid hole with the upper segment. A reaction of reactant A that when was used for strong exothermal isothermal reaction, a reactant A got into the outer tube through the feed inlet, another reactant B gets into the inner ...

A reactor for alkylate is synthetic

The utility model discloses a reactor for alkylate is synthetic, including reactor barrel 1, the reactor barrel is by straight section of thick bamboo section 2, wide footpath section 21 with lie in straight section of thick bamboo section and form with the changeover portion 5 between the section of wide footpath, be provided with tube sheet 14 under the inner tube in a straight section of thick bamboo section lower part, the tube sheet 12 under the outer tube, are provided with tube sheet 4 in handing -over department of straight section and changeover portion, 9 upper ends of outer tube and lower extreme respectively with last tube sheet and outer tube under the tube sheet be connected, the well top of inner tube 10 sets up inside the outer tube, the upper end of inner tube is the cecum, the tube sheet is connected under the lower extreme of inner tube and the inner tube, set up porosely on the inner tube, compare with current industrial reaction ware, sour hydrocarbon contact is effectual ...

A device for alkylate is synthetic

The utility model discloses a device for alkylate is synthetic, including reactor noumenon 1, be provided with reactant feed inlet 9 in reactor noumenon's bottom, concentrated sulfuric acid feed inlet 8 is provided with in the lower part, sulphuric acid discharge gate 3 is provided with at the middle part, be provided with liquid phase discharge gate 7 on well upper portion, gaseous phase discharge gate 6 is provided with at the top, be provided with packing layer 2 in well lower part, the upper surface that makes the packing layer is located sulphuric acid discharge gate 3 and liquid phase discharge gate between 7, the lower surface that makes the packing layer is located concentrated sulfuric acid feed inlet 8 and reactant feed inlet between 9, be provided with liquid distributor 11 below the packing layer, reactant feed inlet 9 is connected with liquid distributor 11 through the pipeline, at the inside mist eliminator 4 that is provided with of reactor noumenon. The utility model discloses ...

Stainless steel dedusting recycling method

The invention discloses a stainless steel dedusting recycling method. The method comprises the following steps: 1, preparing a stainless steel dedusting mixture: adding 47-62kg of coal, 25-34kg of bentonite, 80-120kg of limestone, 42-61kg of silica, 5-8kg of alumina and 18-36kg of calcium carbide in deudsting of each ton of stainless steel, adding a proper amount of water and a reducing agent, and uniformly mixing to prepare the mixture; 2, carrying out cold sintering briquetting; 3, drying; 4, carrying out kiln feeding: sending stainless steel dedusting spheres to a rotary kiln; 5, carrying out rotary kiln smelting: preheating the dedusting spheres in the rotary kiln, dehydrating, adding the reducing agent, and reacting; 6, slagging: sending the stainless steel dedusting spheres out of the rotary kiln after slagging; and 7, carrying out magnetic separation: separating various valuable elements from the stainless steel dedusting spheres through a magnetic separation machine to obtain a ...

Tunnel information tracing accurate grouting method

The invention relates to the field of tunnel grouting, in particular to a tunnel information tracing grouting method, which solves the problems of thick reinforcing ring, large number of drilled holes, long construction period and the like of the traditional curtain grouting method adopted in current tunnel grouting. The method comprises the processes of grout stopping wall building, arrangement of orifice tubes and grouting tubes, measurement of the water burst of a drill hole, packer test, hole arrangement, drilling operation and grouting, wherein the hole arrangement and the grouting are performed according to the sequence from an advance geological drill hole to other outer ring holes to an inner ring hole to a working surface stabilizing hole to an access hole to a pipe-shed hole; and steps such as advance big pipe-shed construction of a working chamber and working surface stabilization by using a glass fiber anchor rod are saved. In the invention, a break through is made in the conventional ...

Efficient and clean germanium extraction method, system and process

The invention belongs to the technical field of chemical metallurgy, and particularly relates to an efficient and clean germanium extraction method, system and process, mixed acid of hydrochloric acid and sulfuric acid reacts with germanium-containing raw materials to rectify and extract germanium, so that chloride ions and distillation residues in hydrochloric acid are recycled. Distilled germanium tetrachloride steam is subjected to subsequent processing and purification; and directly reusing the distillation residual liquid for a smelting system, or reusing the sulfuric acid mother liquid for distilling and extracting germanium after filtering and separating. According to the method, germanium in the germanium concentrate is evaporated out in the form of GeCl4, only arsenic in germanium-containing raw materials and a small amount of metal consume chloride ions in hydrochloric acid, and the utilization rate of hydrochloric acid can reach 90% or above.

Optimization method for thrust overrun of shield tunneling system

The invention relates to an optimization method for thrust overrun of a shield propulsion system. The optimization method comprises the following steps: finding out a plurality of propulsion oil cylinders with target thrust exceeding an effective range and defining the propulsion oil cylinders as overrun areas; the difference value between the target thrust of each thrust oil cylinder in the overrun area and the maximum value or the minimum value of the effective range is calculated, and a plurality of difference values are added to obtain a thrust increment; a first increment area is arranged at the positive half axis of the y axis, and the number of thrust oil cylinders in the first increment area is determined according to the thrust increment; the thrust value of each thrust oil cylinder is obtained through calculation; and judging whether the thrust value of each thrust oil cylinder is in an effective range or not. The problem that the target thrust of the thrust oil cylinders exceeds ...

Processing method for high-pressure water-enriched filling karst cavity

The invention discloses a processing method for a high-pressure water-enriched filling karst cavity, comprising the steps of finding out a filling karst cavity through a former geologic predicting report, analyzing the karst characteristic of the found filling karst cavity, locking the proximity borderlines of the filling karst cavity according to the analysis result of the karst characteristic ofthe filling karst cavity, opening the filling karst cavity at the proximity borderlines of the filling karst cavity and releasing the water-soil pressure in the filling karst cavity. The technical scheme of the invention can effectively avoid the phenomena of water-inrush and soil-inrush generated in the filling karst cavity by directly decreasing the pressure of the filling karst cavity, and improving the safety and reliability during the tunneling and the tunnel operation.

SYSTEMS AND METHODS FOR OSSIFICATION CENTER DETECTION AND BONE AGE ASSESSMENT

Systems and methods for ossification center detection (OCD) and bone age assessment (BAA) may be provided. The method may include obtaining a bone age image of a subject. The method may include generating a normalized bone age image by preprocessing the bone age image. The method may include determining, based on the normalized bone age image, positions of a plurality of ossification centers using an ossification center localization (OCL) model. The method may include estimating, based on the normalized bone age image and information related to the positions of the plurality of ossification centers, a bone age of the subject using a bone age assessment (BAA) model. 148-. (canceled)49. A method implemented on a computing device having at least one processor and at least one storage device , comprising:obtaining a bone age image of a subject;generating a normalized bone age image by preprocessing the bone age image;determining, based on the normalized bone age image, positions of a plurality of ossification centers using an ossification center determination model; andmarking the positions of the plurality of ossification centers on the normalized bone age image.50. The method of claim 49 , wherein the ossification center determination model is an ossification center localization (OCL) model.51. The method of claim 50 , further comprising:estimating, based on the normalized bone age image and information relating to the positions of the plurality of ossification centers, a bone age of the subject using a bone age assessment (BAA) model.52. The method of claim 51 , further comprising:generating a report based on characteristic information of the subject, the positions of the plurality of ossification centers, or the bone age.53. The method of claim 51 , whereinthe BAA model includes a first part and a second part, and inputting the normalized bone age image and the information relating to the positions of the plurality of ossification centers to the first part of the ...

Systems and methods for ossification center detection and bone age assessment

Systems and methods for ossification center detection (OCD) and bone age assessment (BAA) may be provided. The method may include obtaining a bone age image of a subject. The method may include generating a normalized bone age image by preprocessing the bone age image. The method may include determining, based on the normalized bone age image, positions of a plurality of ossification centers using an ossification center localization (OCL) model. The method may include estimating, based on the normalized bone age image and information related to the positions of the plurality of ossification centers, a bone age of the subject using a bone age assessment (BAA) model.

Method, device, storage medium and apparatus of training a neural network model

The present invention is applicable to the technical field of model training. Provided are a neural network model training method, device and system. The method includes: acquiring an original data set and training an original neural network model according to the original data set; identifying a noise label from the original neural network model; and modifying the noise label and training a new neural network model according to a modified data set. The present invention is performed by training an original neural network model from an original data set first, and identifying a noise label in the original neural network model, thereby determining an erroneous label in the original data set, after modifying the erroneous label, finally training a new neural network model according to a modified data set, thus has high accuracy and good interpretability as the erroneous label is directly determined from the network model and modified, so that a new neural network model obtained through final training has a better anti-interference effect.