南水北调中线总干渠膨胀土渠段滑坡处理方案比较

The landslide treatment schemes of the expanded soil section in the Middle Route of South-to-North Water Diversion Project

南水北调中线工程穿越膨胀土(岩)渠段长约386.8 km。膨胀土(岩)渠段开挖后,由于土体含水量变化、裂隙发育等原因,产生胀缩变形,最终影响渠坡稳定,导致发生滑坡。滑坡既有浅层滑坡,也有深层滑坡,现结合施工现场发生的典型滑坡,分析滑坡发生原因,对滑坡处理方案进行分析比较,为膨胀土渠区段的滑坡处理提供技术参考。

The length of the South-to-North Water Transfer Project general canal involving the expansive soil(rock)is approximately 386.8 km.Expansive soil exaction changed the moisture content and the development of fracture,which make the Expansive soil swell and shrinkage and finally affect the canal slope stability.There are Shallow landslide and deep seated landslide of expansive soil.Combined the typical landslide in the construction site,this paper discusses the happen of landslide and comparison of landslide treatment schemes,which provides a reference for the relevant research and engineering projects.