岩土力学Issue(1)：197-203,210,8.
降雨条件下软岩边坡渗流-软化分析方法及其灾变机制
Method of seepage-softening analysis and disaster mechanism in soft rock slope under rainfall
摘要
Abstract
Soft rock slope engineering catastrophic mechanism is a hot difficult subject in slope engineering. According to soft rock slopes unsaturated seepage-stress calculation principles, indirect coupling method is used to analyze soft rock slope stability under rainfall infiltration. A method for analyzing seepage effect has been established. The water-softening characteristics of the shear strength of soft rock are given to the corresponding soft rock in transient saturated zone dynamically, simulating the softening effect of soft rock slope in rainfall seepage. Then, combining seepage and softening, a numerical analysis method for soft rock slope rainfall-seepage-softening-cataclysm analysis has been established based on transient saturation region, which is used to research the disaster mechanism of the slope engineering. The results show that, the depth of the potential sliding surface shallow gradually over time;the shape of stability factor-time curve is reverse recovery curve;and the inflection point appears on the curve when the slope begins to soften. The slope stability calculation results are consistent with the actual situation, so as to show that the proposed thought and method have some validity and can provide a theoretical basis for soft rock slope management program design.关键词
软岩边坡/降雨/暂态饱和区/渗流/软化Key words
soft rock slope/rainfall/transient saturated zone/seepage/softening分类
建筑与水利引用本文复制引用
谢瑾荣,周翠英,程晔..降雨条件下软岩边坡渗流-软化分析方法及其灾变机制[J].岩土力学,2014,(1):197-203,210,8.基金项目
国家自然科学基金资助(No.40672194)；中央高校基本科研业务费专项资金资助(No.11lgpy04)。 （No.40672194）
