边坡的渐进破坏及稳定性分析  

THE PROGRESSIVE FAILURE OF SLOPE AND THE STABILITY ANALYSES

作　　者：王庚荪[1] 

机构地区：[1]中国科学院武汉岩土力学研究所,武汉430071

出　　处：《岩石力学与工程学报》2000年第1期29-33,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：中国科学院特别支持领域山地灾害──泥石流滑坡基础研究!(962105专题)资助项目。

摘　　要：研究了边坡的渐进破坏过程对边坡稳定性的影响，提出了新的接触单元模型并用来模拟滑面上的接触摩擦状态，模拟边坡的渐进破坏过程和进行稳定性分析。在国应力调整而必须的反复求解过程中采用了紧缩计算技术，使计算量成十倍地减小。计算结果表明，考虑渐进破坏过程所求得的稳定性安全系数比常规的不考虑渐进破坏过程的有限元分析所得的安全系数要小５％～１０％。The effect of progressive failure process on the slop stability is studied. A new contact element model is presented and applied to simulate the contact friction state on the slide surface arid the course of progressive failure of slope. The stability of slope is analyzed with this model. In the process of repeatedly extracting solution required by the stress adjustment, the retrenching computing method is used, which makes the calculating time obviously reduced. The calculated results show that the stability safety factor calculated by considering the progressive failure is 5%-10% less than that obtained by common finite element method.

关 键 词：边坡 渐进破坏 稳定性 

分 类 号：P642.22[天文地球—工程地质学] TU457[天文地球—地质矿产勘探]