广西玉林抽水蓄能电站上水库大坝施工导流方案比选

Construction Diversion Schemes Comparison for Upper Reservoir of Yulin Pumped Storage Power Station in Guangxi

笔者结合广西玉林抽水蓄能电站上水库枢纽布置的特点,详细介绍拟选用的导流隧洞导流、机械抽排导流以及库尾截水分流加机械抽排导流3个施工导流方案。通过技术经济比较,最终确定采用库尾截水分流加机械抽排导流方案。通过对上水库支沟进行截水分流,降低机械抽排的24 h洪量,降低汛期度汛风险,该施工导流方案对类似项目有一定的参考意义。

Based on the characteristics of the layout of the upper reservoir hub of Yulin Pumped Storage Power Station in Guangxi the authors introduce in detail the three construction diversion schemes to be selected diversion tunnel diversion mechanical pumping diversion and tail water interception diversion plus mechanical pumping diversion.Through technical and economic comparison it is finally determined to adopt the tail water interception diversion plus mechanical drainage diversion scheme.By intercepting and diverting the upper reservoir branch ditch the 24-hour flood volume of mechanical pumping is reduced and the risk of flood season is reduced.The construction diversion scheme has certain reference significance for similar projects.