顺层蠕动边坡变形破坏机理及稳定性动态分析

STUDY ON DEFORMATION MECHANISM AND DYNAMIC STABILITY OF BEDDING CREEPING SLOPE

摘要: 本文以阜新海州露天矿边坡为例, 分析了边坡变形规律和破坏机制。在弱层流变试验的基础上, 建立了弱层流变力学模型, 通过确定加速蠕变阶段来临的极限应变量和应变速率, 建立了弱层长期强度的时间效应方程, 对于不同边坡工况进行了动态稳定性评价, 为采取抗滑措施控制蠕动边坡的变形破坏发展提供了科学依据。最后提出了一个边坡加速蠕变阶段来临的预测预报方法, 分析结果和实测资料较为一致。

Abstract: From the test result of soft sediments, a mechanical model for creeping of the test sediments is proposed and deformation mechanism is discussed。According to time effect of long-term strength of soft sediments, the dynamic stability of slopes on Fuxin-Haizhou Open-pit Coal Mine is studied, and a method for predicting the instability of this kind of slopes is discussed.