金沙水电站非天然河床流量下导流明渠截流关键技术研究  

Study on key technology of diversion open channel closure under the non-natural river bed discharge of Jinsha Hydropower Station

作　　者：李瞬旭燕 段会平[1] 李雷 LI Shunxuyan;DUAN Huiping;LI Lei(Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611730,China)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都611730

出　　处：《水利水电快报》2022年第3期14-18,共5页Express Water Resources & Hydropower Information

摘　　要：金沙水电站三期截流戗堤位于导流明渠内,导流明渠过水面较窄、水流深、流速大,若上游水电站受电网调节,河床流量将远远大于正常径流的两倍以上,增加截流难度及风险,影响金沙水电站建设周期。因此,开展非天然河床流量下导流明渠截流关键技术研究十分有必要。通过建立截流模型试验获取水力学数据,优化截流方案,最终顺利实现了导流明渠截流并取得较好的经济效益,值得推广应用。The third-phrase closure spur-dike of Jinsha Hydropower Station is located in the open diversion chan⁃nel which has a relatively narrow water surface,deep water flow and high flow velocity.if the upstream hydropower station is regulated by the power grid,the river flow will be more than 2 times than usual and increase the difficulty and risk of the closure and affect the construction period of the Jinsha Hydropower Station.So it is necessary to carry out key technology research of diversion open channel closure for unnatural riverbed.The hydraulic data was ob⁃tained by establishing the closure model test,and the closure scheme was optimized.Finally,the closure of the di⁃version channel was successfully realized and good economic benefits were obtained.It is worthy of popularization and application.

关 键 词：导流明渠 截流模型试验 非天然河床流量 金沙水电站 

分 类 号：TV551.2[水利工程—水利水电工程]