基于悬臂梁力学模型分析高边坡危岩体的稳定性——以四川省三清村高边坡W1危岩体为例

四川省苍溪县三清村高边坡的稳定性对当地居民的人身安全构成了威胁,需要对高边坡进行稳定性分析和评价。本文针对三清村高边坡自来水厂段W1危岩体,采用悬臂梁力学模型对其稳定性进行了定量计算及分析,结果表明:将计算所得的W1危岩体截面的最大剪切应力与截面允许的最大剪切应力进行对比,可以判断W1危岩体在自然条件下处于稳定状态,在暴雨和地震条件下处于不稳定状态,该结果与野外的宏观判断结论基本一致。

Analysis on the Stability of the Dangerous Rock in High Slope Based on the Mechanics Model of Cantilever——Taking W1 Dangerous Rock of Sanqing Village High Slope for Example

The high slope stability of Sanqing Village of Cangxi County in Sichuan Province threatens the safety of the local residents,so it needs to be analyzed and assessed.This paper analyzes the stability of W1 dangerous rock in the waterworks section(1 120～1 440 m)by using the mechanics model of cantilever.Through the contrast of the maximum shear stress of a section with the largest allowing shear stress of the section,it is judged that the dangerous rock W1 in natural conditions is in the stable state,but in heavy rain and seismic conditions,it is in the unstable state.This result is the same with the field macro judgment conclusion.