摘要
有效防治旗山滑坡,在主剖面前、中、后位置布设测斜管,进行深部位移监测。位移数据分析结果表明,滑坡演化呈现后缘倾倒拉裂、中部推移剪切和前缘锁固失稳三个阶段,目前处于中部推移剪切阶段,急需滑坡工程治理;主滑面为砂土状强风化岩软弱夹层,目前滑面部分贯通;持续强降雨后深部位移明显,对滑坡稳定影响显著。
To control the landslide, its depth displacement was monitored with inclinometer tubes at the front, middle and back of the main section. The analysis of the data shows its evolution consists of posterior toppling-fracturing, middle pushing- shearing and anterior backup-failing stages. It is currently in the middle stage, needing urgent engineering treatment. The main sliding surface is sand-like intensely-weathered soft interlayer and some sliding surfaces are connected. Heavy rainfalls have an obvious effect on displacement and stability.
出处
《地质灾害与环境保护》
2012年第2期91-94,共4页
Journal of Geological Hazards and Environment Preservation
关键词
深部位移
形成机制
滑面
降雨
永泰县
depth displacement formation mechanism sliding surface
rainfall Yongtai County
