兴仁围豹滑坡发育特征及稳定性分析

Development characteristics and stability analysis of Xingren County Weibao landslide

兴仁围豹滑坡2018年8月9日晚23时20分左右发生,损毁3栋民房、损坏50 m通村公路以及部分耕地;通过对滑坡区地形地貌、气候水文、地层岩性及地质构造等地质环境背景研究,分析该滑坡平面形态特征、规模情况、滑体结构特征、滑动带(面)特征和滑床结构特征;采用极限平衡分析方法,选取平面滑动模型,对两种不同工况条件下计算滑坡的稳定性系数,对滑坡的稳定性进行分析;计算表明:工况1条件下滑坡处于基本稳定状态,工况2条件下滑坡处于不稳定状态,说明在不同工况条件雨水对滑坡稳定性影响较大。

Xingren County Weibao landslide happened at around 23:20 pm on August 9,2018,damaging 3 houses,50 m country road and part of cultivated land.By studying the geological environment background of landform and Geomorphology,climate and hydrology,strata and lithology and geological structure in the landslide area and the plane shape,scale,structure,sliding zone(plane)and sliding bed structure of the landslide are analyzed.The limit equilibrium analysis method is adopted and the plane sliding model is selected,the stability coefficient of the landslide is calculated under two different working conditions,and the stability of the landslide is analyzed.The calculation shows that the landslide under working condition 1 is in a basically stable state,and the landslide under working condition 2 is in an unstable state,indicating that rainwater has a great influence on the stability of the landslide under different working conditions.