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Progressive geomorphic evolution of reservoir bank in coarse-grained soil in East China – Insights from long-term observations and physical model test
Engineering Geology ( IF 6.9 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.enggeo.2020.105966 Feng Ji , Yuchuan Shi , Renjie Li , Huixing Zhou , Dongpo Wang , Jing Zhang
Engineering Geology ( IF 6.9 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.enggeo.2020.105966 Feng Ji , Yuchuan Shi , Renjie Li , Huixing Zhou , Dongpo Wang , Jing Zhang
Abstract Reservoir bank collapse, as a typical geological hazard, severely affects the geomorphic evolution and safety of residential sites. In this study, a case of Tankeng Reservoir, which is a large reservoir in eastern China is used to analyze a three-dimensional evolution mechanism and deformation characteristics of reservoir bank collapse by years of field investigation, underwater topography measurements and monitoring and corresponding physical modeling experiment. The results show that 90% of the bank collapsed within six years, and a full collapse occurred within nine years for the coarse-grained soil bank. In addition, a three-dimensional progressive pattern for the bank collapse evolution process and a new parameter of stable angles were proposed for first time, and this parameter has practical significance for further scientific calculations of the width and length of bank collapse.
更新日期：2021-02-01
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