龙羊峡水库1986年10月15日到1989年11月底初期蓄水期间,受其蓄水和调节径流的影响,黄河上、中、下游河道的输沙能力降低,淤积加重,三门峡水库蓄清排浑运用作用降低。据实测资料分析,该三年内因水库蓄水年均增加的各河段河道淤积量分别为:上游0.43～0.45亿t;中游龙门至潼关河段0.3亿t;下游0.8～1.0亿t。 Longyangxia Reservoir During the storage period from October 15, 1986 to the beginning of November 1989, the sediment transport capacity of the upper, middle and lower reaches of the Yellow River decreased due to the impact of water storage and regulation of runoff. Sediment deposition increased, and the Sanmenxia Reservoir Pai muddy role of lower use. According to the measured data, the siltation of the rivers in each river section due to the increase of reservoir impoundment in the past three years is respectively: 0.43 to 0.45 billion tons in the upper reaches; 0.3 billion tons in the middle reaches to the Tongguan reach; and 0.8 to 1.0 billion tons in the downstream.