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对地铁喷射注浆法应用于某地铁工程围护结构止水帷幕先期试验的监测数据进行了深入分析。研究结果表明:直桩或斜桩在施工时对周围土体的深层水平位移的影响范围为距桩心3 d范围内,而在1 d范围内影响特别明显;MJS法能改善距桩心1.5 d范围内的土体强度,而在0.5 d~1.5 d范围内,桩体与土体之间将形成一强度由强到弱的过渡区;直桩施工时在距桩心1 d范围内的地表土体将隆起,而在1 d~2.5 d范围内将下沉。
The subway jet grouting method applied to a metro project envelope waterproofing curtain pre-test monitoring data in-depth analysis. The results show that the influence range of straight pile or inclined pile on the deep horizontal displacement of surrounding soil is within 3 days from the center of the pile while the effect is obvious within 1 day. MJS method can improve 1.5 d in the range of soil strength, and in the range of 0.5 d ~ 1.5 d, between the pile and the soil will form a strong transition zone from strong to weak; straight pile construction within 1 d from the center of the pile Surface soil will be uplift, and in the range of 1 d ~ 2.5 d will sink.