丹江口水库洪水资源调控技术研究

Optimal Control of Flood Water Resources for the Danjiangkou Reservoir

丹江口水库既是汉江中下游地区的控制性防洪工程，又是南水北调中线工程的水源地，承担着防洪、供水、发电、航运等重要功能。本文把资料系列延长至2014年并进行设计洪水复核，开展汛期分期、运行水位动态控制和提前蓄水研究。结果表明：在不降低防洪标准的前提下，利用1~5d预见期信息，夏汛期（6月21日至8月20日）和秋汛期（9月1日到10月10日）的运行水位分别在160．0~162．9m和163．5—165．7m区间浮动，年均可增加蓄水量31．6~49．98亿m3，或增加发电量9．96~100．21MkW·h；汛末提前蓄水时间为9月15日，蓄水水位上限值为166m，与原设计方案相比，水库蓄满年份从4年增加到12年，年均多蓄水8．98亿m3。

The Danjiangkou Reservoir is both a key flood control project for the middle and lower reaches of the Han River and water source of the South-to-North Water Diversion Project in China. It is a multi-purpose reservoir, including flood control, water supply, hydropower generation, naviga- tion, etc. The hydrological data series were extended to 2014 and the design flood values were re- checked. The flood seasonal identification, dynamic control of water levels during flood season and early refill of reservoir were studied. Results show that with 1 - 5 d forecasting information, dynamic control bounds of water level during summer flood season （lun. 21 - Aug. 20） and autumn flood season （Sep. 1 - Oct. 10） are 160.0 - 162.9 m and 163.5 - 165.7 m respectively without decreas- ing flood protection standards, which can increase 3.16 - 4.998 billion m3 storage water or 9.96 - 100.21 MkW.h hydropower generation annually. It is also shown that reservoir＇s early refill starts on Sep. 15 with the maximum water level limited to 166 m during September; the full storage rate can increase from 4 years to 12 years, and the storage water increases 0.898 billion m3 annually.