某大型抽水蓄能电站上水库初蓄期安全运行性态分析

Analysis of Upper Reservoir Operation State of a Large Pumped Storage Power Station During Initial Impoundment

发展抽水蓄能是构建现代能源体系的重要战略举措。随着我国大型抽水蓄能电站的批量开工建设,水工安全监测、安全运行管理日益受到重视。基于原型监测成果,研究了某大型抽水蓄能电站上水库初蓄期安全运行特性,发现上库坝群沉降分布与各坝段坝高、坝体大小相关,渐趋于稳定,其中主坝外部沉降总体呈W形分布,内部最大沉降集中在坝体中下部靠下游侧;坝后和库底总渗漏量小,防渗体系总体运行正常。综合分析认为上水库各建筑物初蓄期间运行正常,总体处于安全状态。

Developing pumped storage is an important strategic measure to build modern energy system.With the batch construction of large pumped storage power stations in china,more and more attention has been paid to hydraulic safety monitoring and safety operation management.Based on prototype monitoring results,this paper studied the upper reservoir operation characteristics of a large pumped storage power station during initial impoundment.It was found that the settlement distribution of upper reservoir dam group were related to the each dam’s height and size,and tended to be stable;The surface settlement of main dam was generally W-shaped,and the maximum inside settlement was concentrated in the lower and middle parts along the downstream side;The leakage of dam and reservoir bottom were both small,and the seepage prevention system runs normally.The comprehensive analysis shows that all the hydraulic buildings of the upper reservoir operate normally during initial impoundment and are generally in a safe state.