清峪水库径流分析与计算浅析

Preliminary Analysis and Calculation of Runoff about Qingyu Reservoir

清峪水库在流域临近灞河和沈河流域交界处,其径流特性变化较大,且流域内无实测水文资料,径流难以推求。在分析径流特性基础上,以临近两个相似流域水文站为参证站,采用水文比拟法并以面雨量修正,确定清峪水库多年径流量基本在1732万~2528万m^3之间;采用等值线图法以原水文手册成果并加以修正得到1956~2012年清峪水库多年平均径流量为1942万m^3;采用地区综合法选取秦岭北麓多个水文站资料,得到清峪水库多年平均径流量为2348万m^3,建立径流面积相关关系推求设计流域径流量。经验证,清峪水库坝址年径流量采用2145万m^3较合理。

Qingyu reservoir located in the boundary of Ba river and You river basin, it has a large variation in runoff characteristics, and there is no hydrological data and runoff difficult in calculated. On the basis of analyzing the characteristics of runoff, with two similar hydrological stations as the reference station, the paper takes the hydrological comparison method and corrects the runoff by the surface rainfall so that we determine the annual value between 1732 and 25.28 million m^3 of Qingyu Reservoir. We also use the isograms chart methodandeonsider its original hydrological handbook resuhs to correct its runoff and we got Qingyu Reservoir the annual average runoff of 19.42 million m^3 from 1956 to 2012. If we use the regional comprehensive method to select the data of several hydrological stations in the northern foot of Qinling Mountains, its average runoff is 23.48 million m^3 and we can obtain the correlation of the runoff area to calculate the runoff of the design area. It is proved that the runoff of Qingyu reservoir dam is 21.45 million m^3 more reasonable.