High-pressure jet grouting pile reinforcing process suitable for red-layer soft rock filling field

The invention relates to the technical field of building construction, and particularly discloses a high-pressure jet grouting pile reinforcing process suitable for a red-layer soft rock filling site, which comprises the following steps: leveling and compacting red-layer soft rock, driving a jet grouting drill rod to descend through a lifting mechanism, jetting high-pressure water to cut a soil body and pouring slurry. And in the process, the reinforcing mechanism can flap and reinforce the inner wall of the hole, so that the possibility that the hole collapses under the cutting of high-pressure water is reduced. Meanwhile, the measuring mechanism can measure the reactive force fed back by the inner wall of the hole during flapping, so that different geological stratums where the rotary spraying drill rod is located are judged, the high-pressure water pump is controlled to adjust different gears, the high-pressure water can change the cutting capacity of the high-pressure water according ...