Jet grouting method of reliability with high-pressure jet grouting up 20 ~ 40MPa pressure, the energy of the impact damage to the soil is one giant spray jet grouting drilling rig, to the viscosity and sand can damage punching. Any high-pressure water jets can be impulsive soil soil particles, can be high-pressure jet grouting, as long as the correct order of construction, the use of high-quality cement and other jet grouting material and the use of appropriate technical parameters and reasonable design, you can get excellent reinforced ground and seepage curtain wall. High pressure spraying pile pulp back problem: using high pressure spraying pile as sealing curtain, before construction can dig in the pile side ditch excavation, as a back up of slurry storage places how much the entire rotary spray rig to avoid venues everywhere Running pulp. It is to drill at the same time as the high-pressure grouting, slurry with the surrounding soil combine to form a pile with a certain strength and sealing capabilities, it will come out of the slurry, which provides drilling and grouting to speed, pressure, etc. with Well, in order to ensure the construction quality rotating pile. Note about 2m below ground level to stop grouting, in order to avoid injuries to the ground after the high pressure slurry lead to accidents.