白龙江年径流量水文比拟指数分析确定  

Determination of Hydrological Analogy Index Analysis for Annual Runoff of the Bailong River

作　　者：吴彦昭 陈凯 WU Yanzhao;CHEN Kai(Gansu Hydrological Station,Lanzhou 730000,China;Gansu Qingyang Hydrological Station,Qingyang 745000,China)

机构地区：[1]甘肃省水文站,甘肃兰州730000 [2]甘肃省庆阳水文站,甘肃庆阳745000

出　　处：《水资源开发与管理》2024年第10期10-16,共7页Water Resources Development and Management

基　　金：甘肃省水利厅2022年水利科学试验研究及技术推广计划(甘水建管发〔2022〕59号、22GSLK066)。

摘　　要：为确定白龙江年径流量水文比拟指数,本文收集了流域内9处水文站1956—2022年年径流量数据,采用模比系数法、差积曲线等分析方法,分析了白龙江年径流量多年变化情况、空间分布规律,确定建立年径流量同集水面积线性模型方程,确定了水文比拟指数。研究结论如下:白龙江年径流量多年呈减少趋势,主要突变年份在1994年、2016年前后,白龙江年径流深从上游向下游逐步增大,年径流量同集水面积变化呈线性关系,相关性较好;水文比拟指数不同区域间存在差异性,采用水文比拟法要合理选择参照站及水文比拟指数。To determine the hydrological analogy index for the annual runoff of the Bailong River,this paper collected annual runoff data from 1956 to 2022 from nine hydrological stations within the basin.Using methods such as the model coefficient method and difference accumulation curve,the study analyzed the long-term variation and spatial distribution patterns of the annual runoff of the Bailong River.A linear model equation of annual runoff versus catchment area was established,and the hydrological analogy index was determined.The main conclusions are as follows:the annual runoff of the Bailong River has shown a decreasing trend over the years,with significant change years around 1994 and 2016.The annual runoff depth increases progressively from upstream to downstream,and the relationship between annual runoff and catchment area shows good linear correlation.There are regional differences in the hydrological analogy index,so it is crucial to select appropriate reference stations and hydrological analogy indices when using the hydrological analogy method.

关 键 词：径流量 模比系数 白龙江 水文比拟法 

分 类 号：TV211[水利工程—水文学及水资源]