伊犁萨尔布拉克南岸黄土斜坡稳定性分析  

Stability Analysis of Loess Slope on the South Bank of Yili Salbrak

作　　者：曹小红[1] 尚彦军[1,2] 李巧学 许涛 杨成 春坚超 Cao Xiaohong;Shang Yanjun;Li Qiaoxue;Xu Tao;Yang cheng;Chun Jianchao(Key Laboratory of Geological Hazard Prevention of Xinjiang(Xinjiang Institute of Engineering,Urumqi,Xinjiang),Urumqi,Xinjiang,830000,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China)

机构地区：[1]新疆地质灾害防治重点实验室(新疆工程学院),新疆乌鲁木齐830000 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《新疆地质》2023年第2期251-255,共5页Xinjiang Geology

基　　金：新疆维吾尔自治区自然科学基金资助项目(2022D01A239);新疆地质灾害防治重点实验室开放基金联合资助。

摘　　要：以伊犁霍城县萨尔布拉克南岸斜坡为研究对象,总结环境地质条件,分析斜坡特征,简化基于勘探线剖面的计算模型,运用FLAC软件对H04坡体进行稳定性分析计算。结果显示:在天然工况下,该坡体未形成塑性贯通区;在暴雨或久雨工况下,坡体塑性贯通区形成,规模较小;在暴雨或久雨+地震工况下,坡体塑性贯通区形成,较暴雨工况塑性区范围明显增大,与瑞典条分法计算结果一致。天然工况下坡体为基本稳定状态,在暴雨或久雨工况和暴雨或久雨+地震工况下,坡体易失稳,诱发滑坡。The study focused on the south bank slope of Salbrak,Huocheng County in Yili,summarizing its environ-mental geological conditions,analyzing its characteristics and simplifying the calculation model based on the profile of the exploration line,FLAC software is used to analyze and calculate the stability of H04 slope.The results show that,un-der natural conditions,the slope does not form a plastic through zone,and under heavy rain or prolonged rain conditions,the plastic through zone forms on a smaller scale.Under heavy rain or prolonged rain+earthquake conditions,the slope does not form a plastic through zone,the plastic penetration zone of slope is formed,which is larger than that of heavy rainfall,and the result is consistent with that of Swedish slice method.Under natural conditions,the slope is basically sta-ble.Under the conditions of heavy rain or long rain and heavy rain or long rain+earthquake,the slope is easy to lose sta-bility and induce landslide.

关 键 词：伊犁河谷 萨尔布拉克南岸斜坡 数值模拟 稳定性分析 

分 类 号：TU413.62[建筑科学—岩土工程]