寻乌城南滑坡稳定性影响及敏感性分析
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摘要
寻乌城南滑坡区地质条件复杂,且严重影响了206国道的正常使用,文章研究了影响该滑坡稳定性的各类因素及滑坡的稳定对这些因素的敏感性问题。研究表明滑坡的稳定性受多种因素影响,主要包括岩土容重,滑带C、Φ值,滑体的C、Φ值,滑坡内地下水的动态和地震作用等等,其中滑带的抗剪强度指标C、Φ值,地下水作用和地震作用是滑坡稳定最敏感因素,甚至是诱发因素。
The geological conditions of the XUNWU landslide are complicated,and it has seriously affected the 206 national highway.This paper presents various factors that influence the landslide stability followed with their respective sensitivity analysis.Results indicate that many factors that affect landslide stability,including the gravity density of the rock—soil,values of C and of the slipband,values of C and of the slide—body,the dynamic of groundwater in the landslide body,earthquake activities and others.Among them,the antishearing strength indices(C、Φ) of the slipband,groundwater and earthquake activities are the most sensitive factors,which may trigger the landslide.
The geological conditions of the XUNWU landslide are complicated,and it has seriously affected the 206 national highway.This paper presents various factors that influence the landslide stability followed with their respective sensitivity analysis.Results indicate that many factors that affect landslide stability,including the gravity density of the rock—soil,values of C and of the slipband,values of C and of the slide—body,the dynamic of groundwater in the landslide body,earthquake activities and others.Among them,the antishearing strength indices(C、Φ) of the slipband,groundwater and earthquake activities are the most sensitive factors,which may trigger the landslide.
引文
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[2]沈良峰,卢建峰,刘学军.岩土边坡稳定性分析的模糊综合评判实用方法[J].湘潭矿业学院学报,2002,18(3):71-74.
[3]钱家欢,殷宗泽.土工原理与计算(第二版)[M].北京:中国水利电力出版社,1996.
[4]孙君实.条分法的数值分析[J].岩土工程学报,1984,6(2).
[5]赵尚毅,时卫民,郑颖人.边坡稳定性分析的有限元法[J].地下空间,2001,21(5):450-454.
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