水利学报2017，Vol.48Issue(1)：21-30,10.DOI:10.13243/j.cnki.slxb.20151357
向家坝坝基排水孔涌水量控制标准研究
Control criterion of water inrush for drainage hole in the base of Xiangjiaba Gravity Dam
摘要
Abstract
To monitor the safety related to seepage of the dam foundation,a real-time automatic control system was employed for adjustment of uplift pressure and water inrush in the dam base of Xiangjiaba hydro-power engineering.The controlling criterion of water inrush of the drainage hole is one of the most important indices for the operation of the system.Based on the analysis of the measured data of dam foundation seepage status,numerical method of seepage analysis was employed for the research of distribution of the uplift pressure and hydraulic gradient in the foundation of NO.3 dam section.Relationship between water intrusion and water pressure at the outlet of the drainage hole was also obtained.According to the above relationship,combination with the request of design value of uplift pressure and controlling hydraulic gradient of the dam foundation,a control criterion of discharge of drainage hole for the seepage controlling system of Xiangjiaba hydro-power engineering was proposed.The research results were applied in the operation successfully and achieved the desired purpose.关键词
重力坝/坝基渗控系统/排水孔涌水量/扬压力/渗透变形Key words
gravity dam/seepage control system of dam foundation/water inrush of drainage hole/uplift pressure/seepage failure分类
建筑与水利引用本文复制引用
冯树荣,蒋中明,钟辉亚,曾祥喜,李学政,丁鹏..向家坝坝基排水孔涌水量控制标准研究[J].水利学报,2017,48(1):21-30,10.基金项目
湖南省科技计划项目(2014RS4057) （2014RS4057）
