水口水电站坝下治理工程实施后尾水位—流量关系分析  

Analysis of Tail Water Level-Discharge Relationship after Implementing Below Dam Treatment Project of Shuikou Hydropower Station

作　　者：王文种[1,2] 刘宏伟[1,2] 彭安帮[1,2] 王欢[1,2] 翟劭燚[1,2] WANG Wen-zhong;LIU Hong-wei;PENG An-bang;WANG Huan;ZHAI Shao-yi(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Hydrology and Water Resources Department,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [2]南京水利科学研究院水文水资源研究所,江苏南京210029

出　　处：《水电能源科学》2019年第9期21-23,54,共4页Water Resources and Power

基　　金：国家重点研发计划项目(2017YFC0405700);洪涝灾害监测预报与风险管理创新团队项目(Y517008);国家自然科学基金项目(51709177)

摘　　要：水口水电站坝下治理工程实施后,电站坝下尾水位-流量关系发生变化,直接影响电站平稳运行。为分析这种变化,基于一维恒定非均匀流水力学方法,对水口水电站坝下工程实施后水电站坝下尾水位-流量关系进行数值模拟,并结合河道来沙量、采砂量及河道大断面变化资料,分析工程建设前、后水电站尾水位-流量变化规律。结果表明,河道地形变化是尾水位-流量关系变化的主要原因,坝下治理工程建成后,水电站尾水位-流量关系与现状相比整体升高1.20~3.01m,发电净水头减小。The relationship between water level and discharge at the tail end of the dam has changed after water level treatment project for Shuikou hydropower station,which directly affects the stable operation of hydropower station after construction.In order to clarify the relationship and variation of tail water level and discharge of Shuikou Hydropower Station after water level treatment project below the dam,numerical simulation of tail water level and discharge was carried out based on one-dimensional hydraulics method.Combined with the data of sediment inflow,sand extraction and variation of large cross-section of the river,the variation of tail water level and discharge before and after the construction were analyzed.The results show that the change of underwater topography is the main reason for the change of tail water level-discharge relationship;The relationship between tail water level and discharge after the completion of the water level treatment project below the dam increased by 1.20~3.01 mas a whole.As a result,the net water head of the power station will be reduced compared with the present situation.

关 键 词：水口水电站 坝下治理工程 尾水位-流量关系 数值模拟 

分 类 号：TV697[水利工程—水利水电工程] TV143