三峡库区缓倾角基岩顺向滑坡稳定性分析

发布时间：2018-05-05 09:56

本文选题：基岩 + 顺向滑坡　；参考：《矿业研究与开发》2017年08期

【摘要】：在对基岩顺向滑坡进行详细工程勘查的基础上,利用地表GPS位移监测技术,分析监测数据蕴含的坡体稳定性信息,研究坡体的变形趋势,监测数据显示:强变形区Ⅰ内,滑坡处于持续变形状态,不同部位变形速率存在差异,局部区域位移速率呈上升趋势;暴雨和极端降雨等不利工况下,滑坡变形加剧,位移普遍呈现指数型增长。对处于持续变形的坡体,运用Geo-studio软件进行稳定性校核,计算结果表明:实测水位下,三个计算剖面坡体安全系数满足要求,坡体处于较稳定状态;降雨条件下,存在不稳定滑动面,部分坡体处于欠稳定状态。通过变形监测和稳定性分析,为坡体的稳定性评价以及采取相应的坡体防护措施提供了依据。
[Abstract]:On the basis of detailed engineering exploration of bedrock forward landslide, using surface GPS displacement monitoring technology, the slope stability information contained in monitoring data is analyzed, and the deformation trend of slope body is studied. The monitoring data show that in the strong deformation area I, The landslide is in the state of continuous deformation, the deformation rate of different parts is different, and the displacement rate of local area is rising. Under the adverse conditions such as heavy rain and extreme rainfall, the deformation of landslide intensifies and the displacement generally presents exponential growth. The stability of slope body in continuous deformation is checked by Geo-studio software. The results show that the safety factor of slope body in three sections meets the requirements under the measured water level, and the slope body is in a stable state under rainfall conditions. There is an unstable sliding surface and part of the slope body is in an unstable state. Through deformation monitoring and stability analysis, it provides a basis for slope stability evaluation and corresponding slope protection measures.
【作者单位】：重庆地质矿产研究院外生成矿与矿山环境重庆市重点实验室;大连理工大学工业装备结构分析国家重点实验室;重庆市地质环境监测总站;
【基金】：国家自然科学基金资助项目(41202252) 重庆市国土资源与房屋管理局科技计划项目(CQGT-KJ-2014046);重庆市国土资源与房屋管理局科技计划项目(CQGT-KJ-2015048)
【分类号】：P642.22

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