我国西北地区抽水蓄能电站拦沙坝上游淹没范围界定方法探讨  

Determination of the Upstream Inundation Area of Sediment Retaining Dams in Pumped Storage Power Stations in Northwest China

作　　者：郑斌 马营达 ZHENG Bin;MA Yingda(Northwest Electric Power Design Institute Co.,Ltd.,China Power Engineering Consulting Group,Xi’an 710075,China;Powerchina Northwest Engineering Corporation,Xi’an 710065,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075 [2]中国电建集团西北勘测设计研究院有限公司,陕西西安710065

出　　处：《水电与新能源》2024年第10期26-30,共5页Hydropower and New Energy

摘　　要：针对我国西北部分河流含沙量较高和抽水蓄能电站下库拦沙坝布置特点,根据拦沙坝上游淹没范围内河段水流特征,以泄洪排沙洞进口河流横向断面为界,将其分为上下两段,分别计算确定淹没范围。拦沙坝~泄洪排沙洞进口河段简化为平库,以不同淹没对象设计洪水标准时洞口处回水水位确定淹没范围;洞进口横向断面以上河段,通过计算回水水位,确定淹没处理范围。文中方法可为其他抽水蓄能电站水库淹没范围界定提供参考。Considering the high sediment content in rivers in northwest China and the layout of the sediment retaining dams in the lower reservoirs of pumped storage power stations,the flow characteristics of the river section within the upstream inundation area of the dams are analyzed.Then,the river section is divided into the upper and lower sections based on the transverse section at the entrance of the flood and sediment discharge tunnel,and the inundation areas are calculated separately.The lower section between the sediment retaining dam and the flood and sediment discharge tunnel entrance is simplified as a flat reservoir.The inundation area is determined by the return water level at the tunnel entrance based on the design flood of different submerged objects.For the upper section before the tunnel entrance,the inundation area is determined by calculating the return water level.The proposed method can be useful reference for the determination of inundation areas of reservoirs in other pumped storage power stations.

关 键 词：抽水蓄能电站 拦沙坝 淹没范围界定 

分 类 号：TV743[水利工程—水利水电工程]