降雨入渗黄土边坡的稳定性分析及评价
Stability Analysis and Evaluation of Rainfall Infiltration on Loess Slope

作者: 李忠社 , 彭立志 :江西省地矿局915地质大队,南昌; 梁润娥 :江西省地矿局物化探大队,南昌;

关键词: 降雨入渗黄土边坡饱和–非饱和渗流理论有限元分析Rainfall Infiltration Loess Slope Saturated-Unsaturated Seepage Theory Finite Element Analysis

摘要: 黄土遇水具有水解性和湿陷性而使其强度剧减,水对黄土边坡的稳定性具有很大的影响。因黄土地区边坡的地下水埋藏较深,故降雨成为诱发黄土边坡失稳的主要因素之一。根以饱和非饱和土的渗流理论为基础,采用GeoStudio软件中的SEEP/WSLOPE/W模块对兰州市石峡口滑坡在降雨入渗条件下的稳定性进行了研究,结果表明:该滑坡在累计15天降雨的作用下处于不稳定状态,与实际情况基本吻合。

Abstract: Loess with water has hydrolysis and collapsibility, which results in the drastic reduction of in- tensity. Water has a great influence on the stability of loess slope. Because groundwater is deeply buried in the slope of the loess region, the rainfall becomes one of the main factors inducing loess slope failure. Based on the saturated-unsaturated soil seepage theory, the GeoStudio software SEEP/W and SLOPE/W modules are used to study the stability of Sxiakou landslide in Lanzhou City under rainfall infiltration. The results show that: the landslide is an unstable state in the role of accumulated 15 days, consistent with the actual situation.

文章引用: 李忠社 , 彭立志 , 梁润娥 (2013) 降雨入渗黄土边坡的稳定性分析及评价。 水资源研究, 2, 429-433. doi: 10.12677/JWRR.2013.26062

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