旭龙水电站坝址径流计算分析  

Runoff calculation and analysis at dam site of Xulong Hydropower Station

作　　者：熊丰 戴明龙 秦智伟 李立平 XIONG Feng;DAI Minglong;QIN Zhiwei;LI Liping(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会水文局,湖北武汉430010

出　　处：《水利水电快报》2024年第5期14-19,共6页Express Water Resources & Hydropower Information

基　　金：水利青年科技英才资助项目“水库群影响下的江湖水情响应机制及适应性对策研究”。

摘　　要：设计年径流计算是水电规划和工程设计中的基础工作任务。由于金沙江旭龙水电站坝址处无实测水文资料,需通过上下游和区间的水文站资料推求其坝址径流。基于重构的巴塘水文站和奔子栏水文站径流系列,分析对比了3种方法推求坝址径流的适用性。方法1采用奔子栏水文站扣除古学水文站流量和面积,再采用与巴塘水文站面积内插推求坝址径流;方法2利用坝址上下游的巴塘水文站、奔子栏水文站资料,采用面积内插推求坝址径流;方法3采用巴塘水文站流量,按面积比放大推求坝址径流。采用相邻水文站插补方法或水位流量关系插补方法重构了参证站巴塘水文站、奔子栏水文站1953~2018年的年、月径流系列。结果表明:上述3种方法得到的坝址多年平均径流量分别为321亿m^(3)、329亿m^(3)、317亿m^(3),计算结果相差较小;旭龙水电站坝址年径流统计参数符合地区变化规律,各水文站径流成果在地区上较协调。Design annual runoff calculation is a basic task in water conservancy planning and engineering design.Xulong Hydropower Station on the Jinsha River is one of the backbone power supply points of the west-to-east power transmission.Since there is no measured hydrological observation data at the dam site,it is necessary to calculate the dam site runoff from the hydrological station data at the upstream,downstream and the interval basin.We analyzed and compared the applicability of three methods to calculate dam site runoff based on reconstructed flow series of Batang and Benzilan Hydrological Station.Method 1:The discharge was deducted from Benzilan and Guxue Hydrological Station,and the dam site runoff was calculated by interpolation with the area of Batang Hydrological Station.Method 2:We used the Batang and Benzilan Hydrological Station statistical data to calculate the dam site runoff by area interpolation.Method 3:We used the flow rate of Batang Hydrological Station to derive the runoff at the dam site by area ratio amplification.The annual and monthly runoff series of the Batang and Benzilan Hydrological Station from 1953 to 2018 were reconstructed by the interpolation method of adjacent hydrological stations or the interpolation method of water level discharge relationship.The results showed that the average annual runoff of the dam site obtained by the above three methods were 32.1 billion,32.9 billion and 31.7 billion cubic metre respectively,and the difference between the calculation results was small.The annual runoff statistical parameters of Xulong Hydropower Station conformed to the regional variation law,and the runoff results of each hydrological station were relatively coordinated in the region.

关 键 词：径流计算 多年平均径流量 插补延长 缺资料地区 旭龙水电站 金沙江 

分 类 号：TV121[水利工程—水文学及水资源]