旋喷桩(国外英文资料).docVIP

旋喷桩(国外英文资料)High pressure jet grouting pile is a high-pressure rotating nozzle, the cement slurry sprayed into the soil layer and mixed soil, forming a continuous overlap of cement plus solids. The utility model has the advantages of small occupation, small vibration and low noise, but is easy to pollute the environment and has higher cost.011343961. scope of application(1) high pressure jet grouting method is suitable for treating mud, silt soil, flowing plastic, soft plastic or plastic cohesive soil, silt soil, sandy soil, loess, plain filling soil and crushed stone soil.(2) when the grain contains more soil in the size of stone, hard clay, containing a large number of plant roots or had more organic matter, silt and peat soil and reinforcement of the existing buildings in collapsible loess foundation, the suitable degree should be determined according to the results of field test. The applicability and technical parameters should be determined by high pressure jet grouting test.(3) high-pressure jet grouting method, the rock and gravel soil in the gravel, stone, boulders in the skeleton structure of strata, the groundwater velocity is too large and has water foundation engineering, underground water is corrosive, should be used cautiously.(4) high-pressure jet grouting method can be used in existing buildings and new construction of foundation reinforcement and waterproof curtain, deep foundation pit slope retaining soil and water, the pit bottom reinforcement and prevent piping and uplift, underground pipeline enclosure and reinforcement of subway engineering, soil reinforcement or water proof, dams, dikes, the river embankment dam, dam foundation reinforcement, construction of underground reservoir dam seepage.2. basic provisions(1) high pressure jet grouting foundation engineering design and construction, should consider the foundation types and properties, groundwater conditions, upper structure and load factors, site environment, construction equipment perfor