论龙刘两库补水对缓解黄河下游水量供需矛盾的巨大作用

The Important Role Played by Longyangxia and Liujiaxia Reservoirs in Easing the Water Shortage

本文结合黄河上、下游蓄、引水特点，首次提出龙羊峡、刘家峡两水库非汛期补水对缩短下游断流时间和增加下游工农业用水的估算方法，并利用１９８６—１９９２年非汛期实测资料，估算了相应数值，平均每年缩短了断流时间２．１４个月，增加下游工农业用水量１１．５亿ｍ３，可增加下游灌溉面积约２９．４万ｈａ，为缓解黄河下游水量供需矛盾做出了重要的贡献。

The article, in accordance with the characteristics of water impoundment and discharge of the projects on the Yellow River, Suggests an approach to estimate the reduction of the outage time and the increase of water supply on the lower reaches of the Yellow River in the low water period with the Longyangxia and Liujiaxia reservoirs' joint operation. Based on the analysis of the measured data from 1986 to 1992, it is concluded that during the low water season on the lower reaches of the Yellow River, the outage period was annually shortened by 2. 14 months, the water supply was increased by 1. 15 Gm3, therefore, the 2 reservoirs make a great contribution to easing the water shortage on the lower reaches of the Yellow River.