| Abstract:The shear strength of the rock-soil body, especially the shear strength of the rock body structural plane of the weak layer, plays a vital role in the stable analysis of landslides. The in-situ shear testing, the sample was disturbed, the test status was more consistent with the real state of the rock-soil body, and the parameters obtained were more real. It is suitable for determining the shear strength of the rock and soil structure surface, geotechnical contact surface, sliding surface, mixed soil layer and other coarse granular soil layers . It is one of the important means of landslide investigation in situ testing.This study takes Chongqing Huayu · Guanlan Huafu project as an example. While doing the in situ shear testing, the original sample was collected for laboratory direct shear test to obtain two shear strength parameters under different experiments. The species parameters are analyzed and calculated on the stability of the landslides under different operating conditions, and compared with the actual deformation characteristics of the landslide body, to verify the rationality of the rock-soil body shear strength parameter, which can provide reference and reference for similar projects. |
