基坑封底中的袖阀管注浆技术

针对山西省农业技术综合服务大楼基坑施工中原旋喷桩帷幕深度不够,采用深井降水法不能切断水路、基坑内水位下降不明显,相对隔水层土层厚度不均匀、无法抵抗承压水作用等问题,研究使用袖阀管注浆法加固构成基坑封底,基坑降水形成基坑内降水施工方法。

Grouting Technology with Sleeve Valve Pipe in Foundation Excavation Bottom Sealing

During foundation excavation construction of Agriculture Technique Comprehensive Service Building in Shanxi Province,some problems occur such as inadequate of the jet grouting pile curtain depth,no cutting off the waterway with deep well dewatering method,no down of the water level in foundation,uneven of soil depth of aquifuge and cannot resisting the action of confined water,etc.By researching these problems,foundation bottom sealing with sleeve valve pipe grouting method and inner dewatering method in fo...