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Position: Home > Articles > Stability of Loess Landslides in Eastern Gansu Province Soil and Water Conservation in China 2012 (7) 48-51+75

陇东地区黄土滑坡稳定性分析

作  者：
张俊义;杨强;杨秀元;王爱军;丁伟翠
单  位：
中国地质科学院地质研究所;中国地质调查局水文地质环境地质调查中心
关键词：
陇东地区;黄土滑坡;坡度;坡高;滑坡体厚度;稳定性分析
摘  要：
在分析陇东地区地质环境背景的基础上,选择在坡度、坡高、滑坡体厚度等方面具有代表性的直线型、凸型、凹型和阶梯型黄土滑坡为计算模型,设定天然、饱水、地震和饱水+地震等4种工况,对不同类型、不同坡度、不同坡高、不同滑坡体厚度的黄土滑坡在各工况条件下的稳定性进行了分析。结果表明:从影响因素看,对滑坡稳定性影响最大的因素是坡度,其次是坡高;从工况条件看,诱发滑坡的主要因素是降雨入渗,其次是地震;从滑坡类型看,直线型滑坡稳定性相对较好,阶梯型滑坡和凸型滑坡次之,凹型滑坡稳定性最差。
译  名：
Stability of Loess Landslides in Eastern Gansu Province
作  者：
ZHANG Jun-yi,YANG Qiang,YANG Xiu-yuan,et al.(Center for Hydrogeology and Environmental Geology Survey,CGS,Baoding,Hebei 071051,China)
关键词：
eastern Gansu Province;loess landslide;slope;height of slope;thickness of landslide;stability analysis
摘  要：
The paper selected typical loess landslides of linear-type,convex-type,concave-type and stepped-type on the aspects of slope,height of slope and thickness of landslide based on the analysis of the background of geological environment of eastern Gansu area as a calculating model,and analyzed the stability of landslides under four working conditions of natural,saturation,earthquake and saturation earthquake with different types,different slopes,different heights of slope and different thicknesses of landslide of loess landslides.The outcomes show that: viewing from affecting factors,the maximum affecting factor to the stability of landslide is slope,the next is the height of slope;viewing from working conditions,the main influence factor of landslides is rainfall penetration,the following is earthquake;viewing from the types of landslide,the stability of linear-type is relatively better,then is stepped-type and convex-type,and the concave-type is the worst.

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