高拱坝坝基扬压力异常问题分析  

Abnormal Problem Analysis of Dam Foundation Uplift Pressure of High Arch Dam

作　　者：张明 毕生 邓树森 张峰 孙康平 Zhang Ming;Bi Sheng;Deng Shusen;Zhang Feng;Sun Kangping(Xinjiang Xibandi Water Control Project Construction Administration,Kashgar,China;Construction Management and Quality Safety Center of the Ministry of Water Resources,Beijing,China;Beijing IWHR Corporation,Beijing,China)

机构地区：[1]新疆下坂地水利枢纽工程建设管理局,新疆喀什 [2]水利部建设管理与质量安全中心,北京 [3]北京中水科工程集团有限公司,北京

出　　处：《科学技术创新》2024年第14期103-106,共4页Scientific and Technological Innovation

摘　　要：渗流特性是反映水利工程运行性态的重要内容,某高拱坝在蓄水运行3年后,渗流特性表现出了一定的异常现象。本文基于该工程渗流渗压监测数据,通过环境量数据进行统计模型建模分析,定量分析和评价了水压、降雨、温度和时效等分量对坝基扬压力的影响,并以2019年为典型年,计算了效应量的各分量变幅占比,得出由于降雨影响,水通过微细裂隙入渗至坝基导致扬压力异常,同时本文的分析思路可为同类工程监测资料分析提供借鉴。Seepage characteristics is an important content to reflect the operation behavior of hydraulic engineering.After three years of storage and operation,the seepage characteristics of a high arch dam show some abnormal phenomena.Based on seepage pressure monitoring data of the project,and through the statistical model modeling analysis combined with the environmental data,the influence of water pressure,rainfall,temperature and aging on the uplift pressure of the dam foundation is quantitatively analyzed and evaluated.Taking 2019 as a typical year,the amplitude proportion of each component of the effect quantity is calculated,and it is concluded that due to the influence of rainfall,water permeates to dam foundation through micro-fissure,resulting in abnormal uplift pressure.The analysis idea in this paper can provide reference for the analysis of monitoring data of similar projects.

关 键 词：高拱坝 安全监测 渗流渗压 坝基扬压力 统计模型 

分 类 号：TV642[水利工程—水利水电工程]