尼泊尔上马相迪A水电站分流排沙方案泥沙调度分析  

Sediment Regulation Analysis of the Diversion and Sediment Discharge Scheme of UPPER MARSYANGDI“A”Hydropower Station in Nepal

作　　者：张帆 张怡欣 张智沛 吴昊 ZHANG Fan;ZHANG Yixin;ZHANG Zhipei;WU Hao(China Huadian Overseas Investment Co.,Ltd.,Beijing 100071,China;School of Water Conservancy and Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]华电海外投资有限公司,北京100071 [2]郑州大学水利与土木工程学院,河南郑州450001 [3]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《河南水利与南水北调》2024年第11期43-44,51,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：上马相迪A水电站位于尼泊尔中西部山区河流上,为径流引水式电站,库区泥沙淤积与泥沙磨蚀是上马相迪A水电站运行管理中的核心问题。文章结合上马相迪A水电站入库径流特性,提出将导流洞改建成分流排沙洞,并给出了相应的泥沙调度方案。分析表明,分流排沙洞方案可在不影响正常发电运行的前提下,减小入库泥沙总量,减轻库区淤积,减小发电引水的泥沙含量,减轻含沙水流对水轮机的磨蚀。分流排沙洞方案可为其他拟建或已建径流引水式电站的工程设计与泥沙调度提供有益参考。UPPER MARSYANGDI"A"hydropower station is located on the river in central and western mountains of Nepal.As a run-of-river hydropower station,the sediment deposition and erosion is the essential question during the operation and management.Based on the reservoir inflow characteristics of UPPER MARSYANGDI"A"hydropower station,this article presents transforming the diversion tunnel into diversion and sand discharge tunnel,in the meanwhile,corresponding sediment regulation plans are provided.The analysis shows that the diversion and sediment discharge tunnel scheme could reduce the sediment of the reservoir inflow,lighten reservoir sedimentation,lower the sediment content of power generation flow,and alleviate the erosion of the hydraulic turbine without affecting normal power generation.The diversion and sediment discharge tunnel scheme could provide useful references for the engineering design and sediment regulation of other proposed or existing run-of-river hydropower station.

关 键 词：山区河流 引水式 水电站 分流排沙洞 泥沙调度 

分 类 号：TV732.4[水利工程—水利水电工程]