抽蓄电站全库盆防渗水库渗流缺陷影响分析

Analysis of Seepage Defects of Full Basin Impervious Reservoir in Pumped Storage Power Station

针对抽蓄电站全库盆防渗水库土工膜缺陷导致水库渗流量产生变化的安全问题,结合陕西省某抽蓄电站水库库底土工膜防渗工程,采用单因素影响分析和多因素影响分析方法进行抽蓄电站全库盆防渗水库渗流缺陷影响分析。结果表明,水头大小、缺陷大小、缺陷个数均正向影响抽蓄水库渗流量,而缺陷位置与抽蓄水库渗流量的相关性不明显。其中缺陷大小是影响抽蓄水库渗流量的主要因素,其次为水头大小,再次为缺陷个数。

Aiming at the safety problem of seepage flow change caused by geomembrane defect in the impervious reservoir of the full reservoir basin of pumped storage power station,taking the geomembrane impervious engineering of reservoir bottom of a pumped storage power station in Shaanxi Province for an example,single factor influence analysis and multi-factor influence analysis method were used to analyze the seepage defects of the full reservoir basin impervious reservoir of pumped storage power station.The results show that the height of head,the size of defects and the number of defects all have positive effects on the seepage flow of the reservoir,but the correlation between the location of defects and the seepage flow of the reservoir is not obvious.The size of defects is the main factor affecting the seepage discharge of pumped storage reservoir,the second is the height of head,and the third is the number of defects.