摘要
青海省西山2号滑坡为特大型古滑坡,现形成三级台坎,为三期滑动形成。由于强降雨作用,前缘局部发生垮塌,严重影响该区人民生命财产安全。利用GEO-Studio软件进行不同降雨工况下滑坡的渗流、稳定性和变形耦合计算,分析其稳定性及变形特征。结果表明:一期滑坡、二期滑坡在各不利工况下均处于稳定—基本稳定状态;三期滑坡在大暴雨工况下稳定性系数为1.039,最大变形位移量为0.096 m,处于欠稳定状态,受人类不良工程活动等诱发因素影响下有发生滑坡的可能性。
Xishan No.2 landslide is a super large ancient landslide which has three scraps as a result of three phases of sliding.Due to the heavy rainfall,the landslide front appeared local collapse,which seriously affected the life safety and property of the people in the area.Using the GEO-Studio software,the seepage,factor of safety and deformation were simulated with different rainfall patterns.The results show that landslide in the first and second phase were both in stable to basically stable state under the employed cases.The factor of safety for the landslide in third phase was 1.039 with the maximum deformation displacement 0.096 meters under the condition of heavy rain,which indicates that the landslide will be unstable under the influence of human engineering activities and other induced factors.
作者
李文斌
杨绍康
巴瑞寿
LI Wenbin;YANG Shaokang;BA Ruishou(Qinghai Environmental Geological Survey Bureau,Xining,Qinghai 810007,China;The Key Laboratory of Environmental Geology of Qinghai Province,Xining,Qinghai 810007,China;No.906 Engineering Survey and Design Institute of Qinghai Province,Xining,Qinghai 810007,China)
出处
《中国锰业》
2019年第5期113-115,共3页
China Manganese Industry
基金
青海省2014年中央财政特大型地质灾害治理项目(青国土资《2015》226号)
