巫山段消落带岸坡库岸再造模式及典型案例分析  

Reconstruction models and typical case analysis of the fluctuation belt of reservoir bank slopes in Wushan

作　　者：刘新荣[1,2] 景瑞 缪露莉 韩亚峰 邓志云 熊超 LIU Xinrong;JING Rui;MIAO Luli;HAN Yafeng;DENG Zhiyun;XIONG Chao(School of Civil Engineering,Chongqing University,Chongqing 400045,China;National Joint Engineering Research Center for Prevention and Control of Environmental Geological Hazards in the TGR Area,Chongqing University,Chongqing 400045,China;208 Hydrogeology Engineering Geological Team of Geology and Mineral Bureau of Chongqing,Chongqing 404700,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学库区环境地质灾害防治国家地方联合工程研究中心,重庆400045 [3]重庆市地质矿产勘查开发局208水文地质工程地质队,重庆404700

出　　处：《岩石力学与工程学报》2020年第7期1321-1332,共12页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(41972266);国家重点研发计划(2018YFC1504802)。

摘　　要：三峡库区在库水季节性升降作用下,库岸边坡形成了一段高程约为30m的消落带。消落带是库岸边坡稳定性的敏感地带。在库水升降、波浪淘蚀等其它外力作用下,消落带库岸的岩土体不断地被冲刷和搬运,从而导致库岸后退,消落带岸坡不断地进行库岸再造。根据三峡库区巫山段消落带库岸考察结果,从地质因素和环境因素两个方面对库岸稳定性影响因素进行分析总结,归纳5类易引发消落带变形破坏的致灾岩组,总结岩质岸坡存在的3种岩体结构变形特征;在对库岸再造比较明显的15例消落带岸坡典型案例分析的基础上,提出5种巫山段消落带岸坡库岸再造类型;并在巫山段消落带岸坡灾害防治典型案例分析的基础上,提出了库岸边坡地质灾害防治的要点和岸坡防护的一些建议。In the effect of the seasonal fluctuation of the water level,a fluctuation belt of Three Goreges Reservoir Region with an elevation difference of 30 m,playing an important role in slope stability,was formed. Under the effects of external factors such as the reservoir water level fluctuation and wave erosion,the rock and soil mass of the fluctuation belt is constantly soured and carried out,and the reservoir bank keeps rebuilding. Based on a spot inspection of the fluctuation belt of Wu Gorge of Three Gorges Reservoir region,the stability influencing factors of the reservoir banks were analyzed from the aspects of geological and environmental factors,five kinds of disaster-causing rock formations and the deformation characteristics of three rock structures in rock bank slopes were summarized. On the basis of the analysis of 15 typical cases of bank slope reconstruction,five types of bank slope reconstruction in Wushan section were proposed. Typical cases of disaster prevention and control of bank slopes in Wushan were analyzed and as a result,some key points and suggestions of geological disaster prevention and control of bank slopes were put forward.

关 键 词：边坡工程 三峡库区 消落带 库岸边坡 库岸再造 灾害防治 

分 类 号：P642[天文地球—工程地质学]