Soft Rock Tunnel horizontal jet grouting methods: by controlling the first bracket and the second supporting frame synchronization of the movable body about a longitudinal axis to vary the spray boom of construction location, repeat steps ( 1) to (3) Crawler soft foundation treatment of drilling rigs, drilling to obtain a plurality of first type and a first-shaped stiffening member is inserted into a first type of the pile, so that adjacent to the first type of pile in the radial direction direction partly overlap, so that the plurality of first type at least part of the edge of the pile in the tunnel to be formed to construct the first curtain system; (5), by controlling the first bracket and the second carriage Synchronization can move around the fuselage longitudinal axis to vary the spray boom of construction location, repeat steps (1) to (2) soft foundation treatment rig models to further obtain a plurality of first type and a second drilling a type of pile, so that adjacent portions of the first type of pile overlap in the radial direction, so that at least part of the edge of said plurality of first type of pile to be formed in the tunnel construction of a second curtain system, The first curtain system and the second curtain system combined into a monolithic curtain system GZB-40C a high-pressure injection pump, injection pump uses GZB-40C-pressure injection pump high-pressure jet grouting equipment soft based processing rig, mainly for high pressure rotary provide high pressure water slurry spray. For the new building, highway, railway, underground railways and other soft ground reinforcement, anti-seepage treatment for around foundation, cofferdam and hydropower dams. Hydraulic Anchor Drill Rig class of its rotary power and propulsion and auxiliary actions are based on hydraulic-driven, driven by a hydraulic motor or internal combustion engines. The wide adjustment range of such rigs for deep pore size and large; the openings and better ability of anti-sticking, convenient operation, is the type most of the domestic manufacturers to adopt.