工程地质学报2017，Vol.25Issue(5)：1230-1237,8.DOI:10.13544/j.cnki.jeg.2017.05.007
新疆伊犁加朗普特黄土滑坡泥石流降雨诱发机理
FAILURE MECHANISM OF LOESS LANDSLIDES DUE TO SATURATED-UNSATURATED SEEPAGE—CASE STUDY OF GALLENTE LANDSLIDE IN ILI,XINJIANG
摘要
Abstract
Ili valley of Xinjiang in large areas are covered with loess.Loess landslides occur frequently in this region.Its number accounts for 80% of all landslides in Xinjiang province.The loss caused by loess landslide is remarkable.Compared with other typical loess landslides in western China,loess landslides in Ili valley are characterized by complex slope structures and rainfall-induced unsaturated seepage instabilities.Case study of the unsaturated seepage failure mechanism for Gallente landslide is presented in this study.Slope structure model for Gallente landslide is firstly established.Based on unsaturated seepage theory,the two-dimensional unsaturated seepage field in the slope is simulated and analyzed.Then the seepage failure process and mechanism induced by rainfall are examined.The coupling seepage-stability computing method is used to analyze the destabilizing process of slope structure induced by unsaturated seepage.The unsaturated seepage failure mechanism of large-scale loess landslide in Ili valley is eventually revealed.关键词
伊犁谷地/黄土滑坡/非饱和渗流/失稳机制Key words
Ili Valley/Loess landslides/Unsaturated seepage/Failure mechanism分类
天文与地球科学引用本文复制引用
刘丽楠,李守定,姜越,白亚恒,罗宇..新疆伊犁加朗普特黄土滑坡泥石流降雨诱发机理[J].工程地质学报,2017,25(5):1230-1237,8.基金项目
新疆国土资源厅科研项目(XJDZFZ-XX2013),国家自然科学基金(41202217)资助. （XJDZFZ-XX2013）
