摘要
降雨对滑坡(尤其是土质滑坡)影响巨大,以平武县某滑坡为例,利用Geo-studio,分析滑坡在0~24 h持续降雨情况下的渗流场及稳定性,计算结果显示,随着降雨的持续,坡体中饱和区域的数量不断增加,增加面积主要是沿坡面横向扩展,并最终在坡体表面一定范围内形成贯通的饱和区,同时,滑坡稳定性随降雨持续时长逐渐降低,最终呈现失稳趋势。该结果可以为后期分析降雨对滑坡的影响及平武县滑坡防治工作提供一定的参考价值。
Rainfall has great impact on landslides(especially soil landslides).Taking a landslide in Pingwu County as an example,Geo-stuidio was used to analyze the seepage field and stability of the landslide under continuous rainfall from 0 to 24 hours.The calculation results show that as the rainfall continues,the number of saturated areas in the slope increases continuously.The increased area is mainly spread along the slope,and eventually it forms a saturated area within a certain range of slope surface.At the same time,the stability of landslide is gradually reduced with the duration of rainfall.Eventually it shows a trend of instability.This result can provide a reference for the analysis of the impact of rainfall on landslides and the prevention and control of landslide in Pingwu county.
作者
谢黎黎
XIE Lili(Chengdu University of Technology,Chengdu 610000,China)
出处
《人民珠江》
2018年第11期50-56,共7页
Pearl River
