云南石门坎水电站业主营地古滑坡特征及稳定性分析

The characteristic and stability analysis on the ancient landslide at the Yezhuying hydropower station in Yunnan province

云南石门坎水电站业主营地古滑坡,由土夹碎石、碎石土和全强风化砂岩、粉砂岩、泥岩组成。采用摩根斯顿—普赖斯法和简布法两种计算分析方法,计算其不同地质剖面在不同工况下的稳定系数。结果表明滑坡整体处于稳定状态。业主营地成功建在古滑坡之上,为山区水电站营地的选址提供了值得借鉴的案例。

The ancient landslide of Shimenkan hydropower station owners camp in Yunnan is composed of soil with gravel,gravel soil and fully-strong weathered sandstone,siltstone and mudstone. With two methods of Morgenstern-Price and Janbu,Calculating its stability coefficient of different geological profile under the different conditions. The results show that the landslide is in steady state. Through the analysis of the sensitive factors of landslide,the sensitive coefficient of internal friction angle is greater than the cohesion,is the major influencing factor.