袖阀管注浆法在杂填土地层基础加固中的应用

Application of Sleeve Valve Pipe Grouting Method in Foundation Reinforcement of Miscellaneous Fill Stratum

北京市南水北调配套工程河西支线工程施工第三标段进出水管线基础为杂填土地层,填土地层力学性质不稳定,采取袖阀管注浆加固法进行基础加固,效果明显,很好地改善了地层性质,地基承载力明显提高。文章根据工程实际情况,对袖阀管注浆工艺进行了简要介绍,供工程技术人员参考。

The inlet and outlet water pipeline foundation in the third bidding section during construction of Hexi Branch Project of Beijing South-to-North Water Diversion Supporting Project belongs to miscellaneous fill stratum,which has unstable mechanical properties.The sleeve valve pipe grouting reinforcement method is adopted to reinforce the foundation,which has obvious effect.The stratum property and the bearing capacity of the foundation are prominently improved.The grouting technology of the sleeve valve pipe is briefly introduced in the paper for the reference of engineers and technicians according to the actual situation of the project.