黄土-砂泥岩深挖路堑边坡失稳分析与处治设计研究

Study on Analysis and Treatment Design for Instability of Loess-Sandstone Deep Excavation Cutting Slope

针对某黄土-砂泥岩深挖路堑边坡施工过程中发生滑塌失稳,分析破坏机理与失稳原因,通过高边坡稳定性分析,提出卸载+抗滑挡土墙+注浆微型桩支挡加固与设置明洞两种处置方案加以研究,并考虑方案的有效性、可行性和经济性。以期为黄土-砂泥岩等类似边坡的稳定性分析与工程处治提供参考。

Focusing on the landslide and instability of a loess-sandstone deep excavation cutting slope during the construction,the failure mechanism and instability reasons are analyzed,and through the high slope stability analysis,two treatment schemes of unloading+anti-skid retaining wall+grouting micro pile retaining reinforcement and setting the open cut tunnel are put forward and analyzed,and the effectiveness,feasibility,and economy are considered,expecting to provide the reference for the stability analysis and engineering treatment for similar slopes.