西北水电Issue(1)：71-77,7.DOI:10.3969/j.issn.1006-2610.2025.01.009
抽水蓄能电站上水库局部防渗标准研究
Study on the Local Seepage Control Standard of the Upper Reservoir of a Pumped Storage Power Station
摘要
Abstract
In order to explore the quantification of the local seepage control standard in the project area of a pumped storage power station in an arid climate with scarce water resources,taking the upper reservoir of a pumped storage power station in the Northwest Region as an example,through the calculation method of combining the three-dimensional finite element seepage field analysis with the groundwater in-version in the project area,the changes in the seepage field of the reservoir area under the conditions of no seepage control measures,dif-ferent seepage control curtain qualities and seepage control standards in the upper reservoir are studied.The seepage volume is correlated with the design elements such as the curtain quantity of the pumped storage power station,the reserve storage capacity,and the water re-plenishment cost during the operation period,so as to realize the quantitative optimization of the seepage control standard.The results show that without seepage control measures,the daily seepage flow of the reservoir accounts for about 0.98‰of the total storage capacity,which far exceeds the general limit of 0.5‰for pumped storage,and has a significant impact on the comprehensive cycle efficiency of the power station.Arranging a seepage control curtain can greatly reduce the seepage volume of the reservoir area.Taking the seepage control curtain standard of 1 Lu as the boundary,the total seepage volume of the reservoir shows a non-linear change trend with the increase and decrease of the curtain depth,while the change of the phreatic surface elevation is not obvious.The seepage control effect is positively correlated with both the quality and depth of the curtain grouting,and the improvement of the seepage control curtain quality has a more significant promoting effect on the seepage control effect than the increase in depth.By correlating each design element,the quantitative results of the seepage control standard show that the total project cost shows a trend of first decreasing and then increasing with the im-provement of the seepage control standard of the curtain.When the depth of the seepage control curtain of this project is 1 Lu,the project economy is the best,and it is selected as the local seepage control standard for the upper reservoir.The research results can provide data support for the selection of the seepage control standard of the upper reservoir of a pumped storage power station.关键词
抽水蓄能/渗漏量/防渗帷幕/三维渗流场Key words
Pumped Storage/Seepage Volume/Seepage Control Curtain/Three-dimensional Seepage Field分类
水利科学引用本文复制引用
刘锁,雷双超,黄旭斌,王慧琴,刘同同..抽水蓄能电站上水库局部防渗标准研究[J].西北水电,2025,(1):71-77,7.基金项目
陕西省自然科学基础研究计划(2023-JC-QN-0578) （2023-JC-QN-0578）
