降雨及库水位联合作用下滑坡稳定性评价与治理措施合理性研究  

Study on Landslide Stability Evaluation and Treatment Measures under the Combined Action of Rainfall and Reservoir Water Level

作　　者：张罗送 刘杰[1,2] 孙涛 李洪亚 黎照 ZHANG Luo-song;LIU Jie;SUN Tao;LI Hong-ya;LI Zhao(College of Civil Engineering & Architecture,China Three Gorges University,Yichang 443002,China;Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,)

机构地区：[1]三峡大学土木与建筑学院,宜昌443002 [2]三峡大学三峡库区地质灾害教育部重点实验室,宜昌443002

出　　处：《价值工程》2019年第1期111-114,共4页Value Engineering

基　　金：国家科技支撑计划项目(No.2015BAB07B08);成都理工大学地质灾害防治与地质环境保护国家重点实验室开放基金项(No.SKLGP2016K023);三峡大学硕士学位论文培优基金(2018SSPY037)

摘　　要：针对某库岸滑坡受极值降雨和水位调控方案的影响,运用Geo～Studio分析软件对不同工况下的滑坡进行稳定性计算,确定出滑坡最不利工况条件,通过以最高性价比作为滑坡最佳加固措施的方法,对抗滑桩、削坡减载和锚杆三种设计治理方案进行综合评定,最终确定性价比最高的方案对滑坡进行治理。研究表明:某库岸滑坡为动水压力及降雨型坡,其最不利条件为145m上升至175m过程+3天100年一遇强度降雨,针对此工况下的抗滑桩、锚杆及削坡减载三种支护措施,综合考虑下削坡减载设计为该库岸滑坡最合理有效的治理方案,削坡面积301.7m^2,并可为其他滑坡监测及治理设计提供技术支撑。According to the influence of extreme rainfall and water level control scheme on landslide in a reservoir bank,the stability of landslide under different working conditions is calculated by using Geo^Studio software,and the most unfavorable condition of landslide is determined.By taking the best ratio of performance and price as the best method of strengthening the landslide and synthetically evaluating the design and treatment schemes of resisting slide pile,cutting slope load and anchoring rod,the best performance-price ratio scheme is finally determined to control the landslide.The study shows that the landslide in a reservoir bank is hydrodynamic pressure and rainfall type slope,and the most disadvantageous condition is that the process of145m to175m rise to175m once in3days.Three kinds of supporting measures,such as anti-slide pile,anchor rod and slope load reduction,are considered synthetically as the most reasonable and effective treatment scheme for the landslide in the reservoir bank.The slope cutting area is301.7m2,and it can provide technical support for other landslide monitoring and control design.

关 键 词：库岸滑坡 极值降雨 不利工况 滑坡治理 性价比 

分 类 号：P642[天文地球—工程地质学]