百色水利枢纽垂直位移异常问题研究  

Research on abnormal vertical displacementof Baise Multipurpose Dam Project

作　　者：朱赵辉[1,2] 朱友良 刘建树 张石磊 ZHU Zhaohui;ZHU Youliang;LIU Jianshu;ZHANG Shilei(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Beijing IWHR Co.,Ltd.,Beijing 100038,China;Qinhuangdao Environmental Resources Development Co.,Ltd.,Qin Huangdao 066100,China;Watercourse Administration of Haidian District,Beijing 100094,China)

机构地区：[1]中国水利水电科学研究院工程安全监测中心,北京100038 [2]北京中水科工程集团有限公司,北京100038 [3]秦皇岛市环境资源开发有限公司,河北秦皇岛066100 [4]北京市海淀区河道管理所,北京100094

出　　处：《中国水利水电科学研究院学报》2021年第4期371-380,共10页Journal of China Institute of Water Resources and Hydropower Research

摘　　要：正常情况下,混凝土重力坝在蓄水后大多数表现为下沉变形,而百色水利枢纽在蓄水后运行十余年来,主坝垂直位移产生了坝基抬升、坝顶沉降的“异常”现象。通过查阅工程地质资料、施工过程资料以及相关文献,发现工程坝址区地质条件较为复杂,不同地层力学参数差别显著,岩层倾向下游且倾角较陡,不同高程测点变形特征均有不同,本文从地质诱因、筑坝材料、受力特性等多方面对垂直位移“异常”现象进行定性分析,使用对监测数据进行宏观与微观对比和模型计算等定量分析方法,对提出的垂直位移“异常”现象的定性分析结论进行了佐证,最终得出了较为合理的结论。本文的分析方法可为同类工程监测资料分析提供借鉴。Under normal circumstances,most the concrete gravity dam show a sinking deformation after wa⁃ter storage.Baise Multipurpose Dam Project,however,has been operated for more than ten years after the water storage,but the vertical displacement of its dam produced the"abnormal"phenomenon of dam founda⁃tion lifting and dam top settlement.By consulting engineering geological data,construction process data and related literatures,it is found that the geological conditions of the engineering dam site area are more com⁃plex,the mechanical parameters of different strata are significantly different,the rock strata are inclined downstream and the inclination angle is steep.The deformation characteristics of different elevation measur⁃ing points are different.This paper conducts a qualitative analysis of the vertical displacement"abnormal"phenomenon from many aspects such as geological incentives,dam building materials,and mechanical char⁃acteristics.Quantitative analysis methods such as macro-micro comparison and model calculation of the monitoring data were used to support the qualitative analysis conclusions of the proposed"abnormal"phe⁃nomenon of vertical displacement.Finally,a more reasonable conclusion was reached.The analysis ideas in this paper can provide reference for the analysis of monitoring data of similar projects.

关 键 词：百色水利枢纽 垂直位移 坝基抬升 沉降 安全监测 统计模型 

分 类 号：TV642.3[水利工程—水利水电工程]