摘要
降雨是土质边坡失稳的最大诱因,研究降雨对土质边坡的稳定性影响具有重要意义。雨水渗入土体,水在边坡内富集,软化滑带,使滑带土层的粘聚力、摩擦角减小,力学强度降低,从而导致滑体土沿滑动带滑动。通过对唐庄滑坡的破坏分析,采用不平衡传递系数法计算滑坡稳定性系数和剩余下滑力,计算结果说明土质边坡在无降水的情况下保持基本稳定。降雨后,滑坡区域的各项岩体力学指标发生改变,滑坡区域的整体稳定性变差。
Rainfall is the most hazard for the stability of soil slope,therefore,it is important to study the influence of rainfall on the stability of soil slope.The rain sanks into the soil,gathers in the slope and softens the sliding zone,making the cohesive force and friction angle of sliding zone reduced.Thus,the mechanical intensity decreases,leading to the sliding of soil body along the slide.Through the destruction analysis of Tangzhuang landslide,stability coefficient and residual pull force of landslide were calculated using the method of imbalance transfer coefficient.The results shows that a soil slop is fundamentally stable without raining,however,the mechanical indexes change and the overall stability of landslide area becomes poor after a heavy rainfall.
出处
《中国矿山工程》
2011年第4期59-62,共4页
China Mine Engineering
基金
教育部新世纪优秀人才支持计划资助(NCET-07-0519)
长江学者和创新团队发展计划资助(IRT0843)
山东科技大学研究生科技创新基金项目(YCA100322)
关键词
土质边坡
稳定性
降雨
水
安全系数
不平衡传递系数法
solid slope
stability
rainfall
water
safety coefficient
method of imbalance transfer coefficient
