Jet grouting pile: grouting pipe and nozzle of jet grouting pile are drilled at the design elevation of pile bottom with drilling rig. The pre-prepared slurry passes through a high-pressure generator to make the liquid flow gain great energy, and then it is sprayed out from the nozzle at the edge of grouting pipe at high speed, forming a liquid flow with high energy concentration, which directly destroys the soil. In the process of spraying, the drill pipe is lifted while rotating, so that the mud and soil are fully stirred and mixed, and a columnar consolidated body with a certain diameter is formed in the soil, which plays a role in strengthening the foundation.
Difference between double pipe and triple pipe of high pressure jet grouting pile;
First of all, we know that they are different in technology. The dual-tube uses high-pressure grouting pump and air compressor to work at the same time to generate high pressure and form high-pressure cement slurry flow.
Technical difference: The double pipe of high-pressure jet grouting pile uses high-pressure grouting pump and air compressor to generate high pressure at the same time to form high-pressure cement slurry flow and cut the soil into piles. The triple pipe of high-pressure jet grouting pile is drilled with special equipment first, and then inserted into grouting pipe. Cutting soil with high-pressure water flow. At the same time, the slurry produced by the cutting body is discharged by the air compressor, and the slurry is synchronized.
The difference of pile-forming effect: the diameter of double pipe of high-pressure jet grouting pile is about 800 mm, and the effective diameter of three pipes can reach about1200 mm.
Cost difference: the time of high-pressure jet grouting pile for two pipes is about 400kg, and that for three pipes is about 800kg.
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