库岸斜坡失稳及其涌浪灾害风险分析  

Risk analysis of surge disaster and slope instability on reservoir bank

作　　者：罗冠枝 高文伟 王国卫 蒋明光 陈全明 LUO Guanzhi;GAO Wenwei;WANG Guowei;JIANG Mingguang;CHEN Quanming(Hunan Geological Environment Monitoring Station, Changsha,Hunan 410007,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]湖南省地质环境监测总站,湖南长沙410007 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《中国地质灾害与防治学报》2020年第1期8-17,共10页The Chinese Journal of Geological Hazard and Control

基　　金：湖南省自然资源厅“湖南省麻阳县地质灾害风险评估示范”计划项目(2018023)

摘　　要：库岸斜坡失稳及其引发涌浪问题是库岸斜坡灾害的重要研究部分,开展库岸斜坡失稳及其涌浪灾害风险分析研究对指导库岸斜坡防灾减灾具有重要意义。以湖南省麻阳县大水冲水库滑坡为例,探讨库岸斜坡失稳引发涌浪灾害的分析方法,采用Geostudio软件进行10年和50年一遇5日累积降雨的滑坡稳定性模拟分析,绘制滑坡影响范围内建筑物风险变化图和室内人员风险变化图。总结了在最危险工况下,大水冲水库滑坡总经济风险为249.3万元,室内人员的风险值达到27.8,并有产生翻坝的可能,但对沟口居民和水库坝体破坏的风险低。Bank slope instability and the induced surge are important problems on bank slope stability.Risk analysis of slope instability and surge disaster is important to disaster prevention and mitigation on reservoir bank.Taking the landslide of Dashuichong Reservoir in Mayang County,Hunan Province as an example,this paper discusses the analysis method of the surge disaster caused by the slope instability on the bank of the reservoir.Geostudio software is used to analyze the stability of the bank slope with the accumulated rainfall in 5 days every 10 years and every 50 years.It is concluded that under the most dangerous working conditions,the total economic risk of landslide in Dashuichong reservoir is 2.493 million yuan,and the risk value of indoor personnel is 27.8,and there is the possibility of dam overturning,but the risk value of dam damage to ditch residents and reservoir dam body is low.

关 键 词：库岸斜坡失稳 涌浪 风险分析 稳定性模拟分析 防灾减灾 

分 类 号：TV697.2+3[水利工程—水利水电工程] TU413.6+2[建筑科学—岩土工程]