长江三峡库区某滑坡滑动机理及稳定性研究

A study on deformation mechanism and prevention for a landslide in reservoir area of Three Georges

长江三峡库区地质环境条件极为复杂,由于三峡工程的兴建,库水位的上升将诱发大量滑坡.本文选取湖北省巴东县老城区三峡教育服务公司滑坡为工程背景,在对地质环境条件和变形破坏特征进行调查研究的基础上,对产生滑坡的原因进行了深入分析,并概括出了滑动模式.采用不平衡推力法,对各种工况下的滑体稳定性进行了计算,结果表明:该滑坡在现今天然状况是稳定的,但在降雨或水库蓄水时,该滑坡整体处于潜在不稳定状态,必须进行地表排水、抗滑桩和挡土墙等综合整治措施.

Because of Three Gorges Project construction, a plenty of landslides will occur in reservoir area where geological condition is considerably complex. Based on field investigation of geological ground and deformation evidence, sliding mechanism is analyzed and sliding mode is summarized for Three Gorges education services company lanslide in Badong County. Using unbalanced push method, stability analysis under different conditions is carried out. It is shown by the result that the landslide is stable under natural conditions, while it becomes potentially unstable when saturated. Therefore, drainage, anti -sliding pile and retaining wall should be adopted to prevent destruction after the elevation of the water level of Yangtze River.