贵州省某高速公路滑坡变形破坏机理分析

摘要

Taking a highway landslide of Guizhou Province as the object of the study,the mechanism of deformation and failure of the landslide was analyzed.The results show that:the landslide area has complex geological structure and weakness stratum lithology is the material foundation for deforma-tion and failure of landslide.Foot cutting excavation of slope and rainfall are the main factors inducing the landslide.Unreasonable construction process failed to inhibit the deformation of landslide.Vari-ous factors'combined action make landslide deformation under constant development,and induce the second landslide.The deformation and failure mechanism of the landslide are analyzed through the deep displacement monitoring curve.%以贵州省某高速公路滑坡为研究对象，对该滑坡变形破坏机理进行分析及研究。研究结果表明，滑坡区地质构造复杂，地层岩性软弱为滑坡的变形破坏基础原因，开挖切脚及降雨是诱发该滑坡的主要因素，施工工序的不合理未能有效抑制滑坡变形，各因素综合作用下使得滑坡变形持续发展，并牵引形成二级滑坡。结合深层位移监测曲线，实现了滑坡变形破坏的过程分析。