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一、夺流减淤如所周知,黄河分流必淤。这是因为水流挟带的含沙量与流量成正比。分流后,进入分流口下游河道的含沙量并未改变,但流量减少了,能挟带的含沙量也相应减少,因此造成分流口以下河道的淤积。如图所1示: 根据输沙平衡原理,可写出如下方程: △G_1=Q_iS_i-△QS_i-Q_0S_0 (1)
First, wins the reduction of silt As we all know, the Yellow River diversion silt. This is because the amount of sediment entrained in the water stream is proportional to the flow rate. After the diversion, the amount of sediment entering the downstream channel of the diversion outlet has not changed, but the flow rate has been reduced and the sediment concentration entrained has also been correspondingly reduced. As a result, sedimentation of the river channels below the diversion outlet has been caused. As shown in Figure 1: According to the principle of sediment transport, can write the following equation: △ G_1 = Q_iS_i- △ QS_i-Q_0S_0 (1)