摘要
在贵州岩溶区某大型工程台址工程地质环境条件研究基础上,采用地质历史过程机制分析法和数值模拟方法,对岩溶区层状缓倾角岩质边坡变形破坏机制作系统研究,总结出了4种变形破坏机制,即高陡的层状缓倾内边坡(A类坡)主要发生倾倒-崩落或拉裂-崩落破坏,低矮的层状缓倾内边坡(C类坡)则以小规模垮塌为主;缓倾外顺层边坡(B类坡)以滑移-拉裂型顺层滑坡或块状滑坡为主,而复合型边坡(D类坡)多以滑移-拉裂和弯曲-拉裂组合形式发生破坏。
Based on the study of the engineering geological conditions for a large project in Guizhou karst region, deformation and failure mechanism of four types of samdwich glacis slopes in karst region are represented in detail. The research results show; the slope failure model is inclined to tilting-collapsing or splitting-collapsing （named A type） if the slope is deep and high and the rock mass is low counter-inclined with soft interlayer; the slope＇s failure model is inclined to small collapse （named C type） if the slope is slow and dwarf and the rock mass is low counter-inclined with soft interlayer; it＇s failure model is inclined to bedding-slide or sliding-collapsing （named B type） if the slope structure is sequence-inclined with densely deep tectonic joints and weathering fissures; failure model of compound slope is inclined to sliding-splitting ＆ bending-splitting.
出处
《地质灾害与环境保护》
2007年第4期67-73,共7页
Journal of Geological Hazards and Environment Preservation
关键词
岩溶区
缓倾角边坡
变形破坏机制
Karst region
samdwich glacis slope
deformation and failure mechanism
