邵吉线改建工程坡头段路堑滑坡形成机理及防治建议

Study on Failure Mechanism and Treatment Suggestion of Cutting Landslide Located on Po Tou Town of Shao Ji Road Reconstruction Project

邵吉线改建工程坡头段路堑滑坡为小型滑坡。由于岩体间的相对变形运动,坡体被8条深大裂缝切割为6个变形块体,各块体变形运动特征差异较大,其中变形体的主体部分为2号;可将滑坡体的变形破坏模式总结为分体式右旋滑动破坏;坡体的失稳是三面临空的斜坡形态、遇水软化及易风化的地层岩性、近似顺倾的地层结构、持续降水作用以及路堑开挖应力释放等多因素耦合作用的结果;可以采用预应力锚索格构、锚杆格构、削坡处理、截排水、裂缝填埋、坡面植草相结合的复合型治理措施。

Cutting landslide located on Po Tou town of Shao Ji road reconstruction project belongs to minitype landslide. Owing to relative deformation and movement of rocks, the slppe been cut into 6 deformation blocks by 8 deep rupture lines, every block shown different deformation and movement characteristic, and block 2 # was nkain part of deformation. Deformation and failure model of landslide could be summarized as separated deformation and dextral shear slip destruct model. The instability reasons of slope should be Summarized as three empty faces of slope, water softening and easily weathered stratum lithology and approximate equation of inclination between slope and stratum, continuous rainfall and excavation stress release. Combined measures such as prestressing forced anchor cable structure, anchor pile structure and cutting slope, drain away water and rupture dumping, plant on surface of slope should be used to treat the landslide.