高变幅水位对滑坡变形影响速率关联度研究  

Study on Correlation of Rate Affecting Landslide Deformation by Reservoir Water Level in Large Variation Range

作　　者：田阳辉[1] 王体俊[1] TIAN Yanghui;WANG Tijun(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056

出　　处：《路基工程》2021年第6期104-108,共5页Subgrade Engineering

摘　　要：依托西南高拱坝库区某典型特大型库岸滑坡工程,基于速率关联度的相关性分析方法,研究了库岸滑坡坡表位移速率与库区水位波动变化速率的定量关系。结果表明:该滑坡变形属于渗流驱动型,降水期对滑坡变形影响显著,水位下降过程中难以消散的孔隙水压力与指向坡外的渗透力导致了滑坡的变形;在水位下降的初期因水库水的支撑作用显著减弱,滑坡变形最为强烈。Based on the project of a typical extremely large landslide along the bank of reservoir with high arch dam in the southwest,by the analysis method of rate correlation,the quantitative relationship between the rate of surface displacement and the rate of water level fluctuation was studied.The result shows that,the landslide deformation is seepage-driven and significantly impacted in the dropping of water level,during this period,both the hardly disappeared pore water pressure and the outward seepage force induce the landslide deformation,and in the initial period of dropping,the landslide deformation is most intense because the supporting effect of reservoir water is significantly reduced.

关 键 词：水库滑坡 变形 库水位波动 速率关联度 降水期 升水期 

分 类 号：TV697.23[水利工程—水利水电工程]