梯级水库旱限水量确定方法研究.

Based on the method of determining the drought limit water volume of reservoirs by stages, this paper polymerized the cascade reservoirs and proposed a method of determining the drought limit water volume of polymerized reservoir. Taking Fenhe Reservoir and Fenhe II Reservoir as the research object, the two reservoirs were generalized into polymerized reservoir and the drought limit water volume of polymerized reservoir was determined by inverse recursive method. The drought warning water volume of polymerized reservoir in dry season and agricultural irrigation period is 299.37 million m³ and 239.45 million m³, and the drought guaranteed water volume is 189.82 m³ and 135.01 million m³. After setting drought limit water volume, the number of water shortage months for life, ecology and industry in typical drought years, from June 1965 to May 1966, is decreased from 3, 5 and 5 to 0, 1 and 1, individually 1 month. The water shortage in agriculture increases to 6.41 million m³, but the water shortage of life, industry and ecology decreases to 27.17 million m³. It can be seen that the formulation of drought limit water volume has played a regulatory role in the cross drought year. From the perspective of the overall water supply interests of various industries, the losses suffered by agriculture are still within an acceptable range and the increase of water shortage is small. After setting drought limit water volume, the water supply of life and industry in dry years can be significantly improved by slightly reducing agricultural water supply. [ABSTRACT FROM AUTHOR]