库水和降雨作用下张家祠堂滑坡变形及稳定性分析  

Deformation and Stability Analysis of Zhangjiacitang Landslide Under the Action of Reservoir Water and Rainfall

作　　者：吕鹏 邹建华 陈虹雨 王兴华 秦彬莉 LV Peng;ZHOU Jianhua;CHEN Hongyu;WANG Xinghua;QIN Binli(Sichuan Geological Environment Survey and Research Center,Chengdu 610081;Sichuan Huadi Construction Engineering Co.Let.,Chengdu 610081;School of Civil Engineering,Chongqing Three Gorges University,Chongqing 404020)

机构地区：[1]四川省地质环境调查研究中心,成都610081 [2]四川省华地建设工程有限责任公司,成都610081 [3]重庆三峡学院土木工程学院,重庆404020

出　　处：《四川地质学报》2024年第4期688-693,共6页Acta Geologica Sichuan

基　　金：在渝高校与中科院所属院所合作项目(三峡库区地质灾害大数据智能预测预警云服务平台研发及应用,HZ2021012)。

摘　　要：三峡水库是中国最大的水库之一,位于长江中游地区,其地形地质条件复杂,新构造运动和外动力作用活跃,三峡库区大量涉水滑坡受每年库水涨落和汛期降雨影响复活变形。为研究库水与降雨对库区内涉水滑坡变形及稳定性影响,以三峡库区典型的张家祠堂滑坡为例,通过分析2017年至2021年间的GPS监测数据,研究滑坡变形时空响应规律,结合Geo-Studio数值模拟进行滑坡在实际工况条件下的稳定性计算。研究结果表明:张家祠堂滑坡变形从中后部到前缘逐渐减弱,整体呈推移式变形特征;滑坡稳定性对降雨更为敏感;滑坡在库水位下降期叠加降雨稳定性最差。研究结果可为三峡库区同类型涉水滑坡防治提供参考。The Three Gorges Reservoir,one of the largest reservoirs in China,is located in the middle reaches of the Yangtze River.It has complex topographic and geological conditions,neotectonic movement and external dynamics are active.A large number of water-related landslides in the Three Gorges Reservoir area are resurrected and deformed under the influence of annual reservoir water fluctuation and flood season rainfall.In order to study the influence of reservoir water and rainfall on the deformation and stability of water-related landslides in the reservoir area,the typical Zhangjiacitang landslide in the Three Gorges Reservoir Area was taken as an example,the spatio-temporal response rule of landslide deformation was studied by analyzing the GPS monitoring data from 2017 to 2021,and the stability of the landslide under actual working conditions was calculated by Geo-Studio numerical simulation.The results show that the landslide deformation of Zhangjiacitang gradually weakens from the middle back to the front,and the whole deformation shows the characteristics of pushing.Landslide stability is more sensitive to rainfall.The stability of landslide is worst in the period of reservoir water level decline combined with rainfall.The research results can provide reference for the prevention and control of the same type of water-related landslide in the Three Gorges Reservoir area.

关 键 词：三峡库区 张家祠堂滑坡 库水位 降雨 稳定性分析 

分 类 号：P642.22[天文地球—工程地质学]