抽水蓄能电站地下排水系统失效敏感性分析  

Sensitivity Analysis of Underground Drainage System Failure in Pumped StoragePower Stations

作　　者：高文甫 曹成 Gao Wenfu;Cao Cheng(Sinohtdro Bureau 3 Co.,Ltd.,Xi'an 710024,Shaanxi;Xi'an University of Technology,Xi'an 710048,Shaanxi)

机构地区：[1]中国水利水电第三工程局有限公司,陕西西安710024 [2]西安理工大学,陕西西安710048

出　　处：《陕西水利》2025年第4期8-10,共3页Shaanxi Water Resources

摘　　要：以某抽水蓄能电站工程为例,建立三维有限元计算模型,分析地下排水系统正常运行、失效25%、失效50%和失效75%时地下渗流场、排水系统渗流量、厂房渗流量的变化规律,探究地下排水系统对厂房附近地下水位和厂房渗流量的影响机制。结果表明,地下排水系统能够有效控制厂房附近渗流场分布规律,排水系统正常运行时厂房附近地下水位呈降落漏斗状,厂房洞室地下水溢出点较低,厂房渗流量较小,当排水孔失效程度不断增大时,厂房附近地下水位和洞室地下水溢出点不断抬升,厂房渗流量随之增大,不利于厂房运行。Taking a pumped storage power station project as an example,a three-dimensional finite element calculation model was established to analyze the variation patterns of the underground seepage field,drainage system seepage flow,and powerhouse seepage flow under normal operation,25%failure,50%failure,and 75%failure of the underground drainage system.The study explores the influence mechanism of the underground drainage system on the groundwater level near the powerhouse and the powerhouse seepage flow.The results indicate that the underground drainage system can effectively control the distribution of the seepage field near the powerhouse.When the drainage system operates normally,the groundwater level near the powerhouse forms a drawdown funnel,the groundwater overflow point in the powerhouse cavern is low,and the seepage flow is minimal.As the degree of drainage hole failure increases,the groundwater level near the powerhouse and the overflow point in the cavern rise,leading to an increase in powerhouse seepage flow,which adversely affects powerhouse operation.

关 键 词：抽水蓄能电站 三维数值模拟 地下洞室群 排水系统 失效分析 

分 类 号：TV431[水利工程—水工结构工程]