东湖水库径流和径流调节计算与分析

Calculation and Analysis of Runoff and Runoff Regulation in Donghu Reservoir

广东省阳东区那龙镇东南部那龙河上游,是一座以灌溉、防洪为主,兼发电、供水、养殖及旅游业等综合利用的大(2)型水库。为充分利用水库现有水资源,进一步提高水库兴利效益,文章收集到东湖水库1961年5月~2018年4月共57年(水文年)的水文资料,在确保了资料可靠性、代表性和一致性后,对年径流量进行频率分析,在此基础上进行了径流调节计算和兴利调节计算。计算结果表明:东湖水库所需兴利库容为7125.8万m^(3),小于现有兴利库容8010万m^(3),东湖水库现有兴利库容能满足东湖水库灌区的灌溉用水要求。

The East Lake Reservoir is a large(2)type reservoir mainly used for irrigation and flood control,as well as comprehensive utilization of power generation,water supply,aquaculture and tourism.Donghu Reservoir is located in the upper reaches of Nalong River in the southeast of Nalong Town,Yangdong District,Guangdong Province.In order to make full use of the existing water resources of the reservoir and further improve the benefit of the reservoir,this paper collected the hydrological data of Donghu Reservoir for 57 years(hydrological year)from May 1961 to April 2018.After ensuring the reliability,representativeness and consistency of the data,the frequency analysis of the annual runoff is carried out,and on this basis,the runoff regulation calculation and the profit regulation calculation are carried out.The calculation results show that the required Xingli storage capacity of Donghu Reservoir is 71.258 million m^(3),which is smaller than the existing Xingli storage capacity of 80.1 million m^(3).The existing Xingli storage capacity of the East Lake Reservoir can meet the irrigation water requirements of the East Lake Reservoir irrigation area.