Ground pressure circle spray reinforcement principle: High Pressure Injection Method is based on the grouting, high pressure injection technology and developed a new foundation reinforcement methods. It is designed to take advantage of the ejection tube is inserted into the project as a pilot hole drilling rig, the post-treatment with a special nozzle jet grouting pile depth, with high-pressure pumps and other high-voltage pulse generating device, the slurry or water at 20 ~ 40 MPa high-pressure stream ejected from the nozzle, the impact of cutting soil. When the energy, speed, dynamic pressure was pulsating like a jet strength of soil structure over time, peel off the soil particles begins with the soil. Part of the fine soil particles are injected slurry was replaced with the liquid stream is brought to the surface soil (commonly known as oozing slurry). The remaining soil particles and slurry mixing, according to a certain proportion of the slurry and soil quality have rearranged regular size. After the slurry is solidified, they form a consolidated body, the moving direction of solidification body shape and jet stream about the soil. High pressure jet grouting method is suitable for processing sludge, silt clay of the new high pressure jet grouting pile, clay soil, silt, loess, sand, artificial fill and other foundations. When the large particle size boulders contain more, hard clay soil, a large number of plant roots or excessive use organic matter, it should determine the extent of its use according to the results of the field test. Tianjin-strong high-pressure pump Co. XPB-20B walking Jet rig rig The main features of 2.1, good rig to adapt to performance, supporting different modules, different drilling projects can meet different needs. Users can configure according to their actual needs to be put in the best cost performance rig construction, and can continue to update the modules to solve different jet grouting process. 2.2 rig during construction, drilling and jet grouting can be completed. 2.3 rig with full hydraulic technology: drill head gear, lifting and drilling rig from the tower of the crawler rotary jet pile models are hydraulic controls, flexible operation Churning Pile price model parameters, maintenance saving time, effort . Hydrostatic facilitate special road construction site, to facilitate the construction personnel to operate. 2.4, the rig may be new winches, hydraulic control application, greatly reducing the labor force, increasing productivity while improving the safety of construction personnel security.