[Tianjin-strong high-pressure pump Co., Ltd. to recommend the star product] single-tube high-pressure grouting Piles is the use of drilling rigs and other equipment, the special nozzle mounted on the bottom side of the grouting tube into the soil after a predetermined depth, Handan Crawler Jet rig, mud pump and other high-pressure generating device, a pressure of about 20Mpa ejected from the nozzle in the slurry out of the direct impact of the destruction of soil, but by the rotation of the grouting pipe and promotion campaign to make the soil from caving down to earth changes, part of the fine particles with the slurry out of the ground, the rest of the soil particles in the role of impact force jet, centrifugal force and gravity force, and slurry mixing, jet grouting rig crawler models, according to a certain pulp the proportion of the size and quality of the soil, triple pipe crawler Jet rig regularly rearranged, after a certain time of solidification, consolidation will form a cylindrical body in the soil. According to strengthening the role of the double pipe crawler jet grouting rig, jet grouting can be divided into the following different purposes:  1, sealing, forming water curtain, cut off the flow of groundwater.  2, to prevent the bottom of the pit clayey soil or sandy soil Chung piping or retaining sidewall.  3, adjacent to an underground structure or object protection.  4, reinforcing the old structure of the foundation.  5, pile foundation alternative.  6, underground pipe jacking method shield end and beginning of the reinforcement.