织金县垮坡组滑坡变形失稳原因分析

The Deformation and Instability Causes of Kuapozu Landslide in Zhijin County

为研究垮坡组滑坡变形失稳原因及影响因素,结合已有的资料和地质调查资料分析,运用构造地质学、工程地质力学、无人机、物探等手段方法进行了研究。结果表明:从整个地质环境来看该斜坡体已经具备了滑坡的地质条件;连续几天的强降雨增加了滑坡体自重,极大降低了滑坡的稳定性,降雨是促使滑坡滑动的主要外在因素;在连续强降雨情况(达到饱水工况下)失稳,其变形破坏模式为压致-拉裂型。

In order to study the causes and influencing factors about the deformation and instability of Kuapozu landslide in Zhijin County, many methods were employed. Combined with the existing data and geological survey data, methods of structural geology, engineering geomechanics, unmanned aerial vehicle, geophysical exploration and other means were used to make analysis. The results show that the slope body is of geological conditions of landslide in the whole geological environment. The heavy rainfall for several days in a row increases the weight of the landslide and greatly reduces the stability of the landslide. Under the condition of continuous heavy rainfall(under the condition of saturated water), the slope slides, and its deformation and failure mode is compression-tension type.