Accumulation of the sediment in the stream of the diversion channels adversely affects its operational systems. Diversion channels are often constructed perpendicular to the main river. In this study, the water flow and sediment transport in the diversion channel with different angles were investigated in an attempt to maximize water discharge and minimize sediment discharge. A physical model with movable bed was used to simulate water and sediment flow with five diversion angles (θ) between (30°–90°). Moreover, three bed width ratios (B_r) (the relation between diversion to main channel bed width) between 30% and 50% and five total discharges between (7.25 L/s to 12.25 L/s) were considered for each case of (θ). The results showed, up to 10%, increasing in proportion discharge ratios for 30 and 45 diversion angles compared with 90° diversion angle. The results also showed that the lowest diversion sediment concentration was provided by the (θ) of 30°. Across all scenarios, the average proportion concentration reduction was 64%, compared with 90° diversion angle. Closer observation of the diversion system mechanism confirmed that decreased (θ) result in decreased sediment concentrations in the diversion channels. In conclusion, the diversion channel water and sediment discharge could be effectively managed by changing the (θ) to 30° or 45° instead of 90°.

导流河道中的沉积物积聚会对其运行系统产生不利影响。引水渠通常垂直于主河而建。在这项研究中，研究了在不同角度的分流河道中的水流和泥沙输送，以最大程度地减少水的排放和减少泥沙的排放。带有可移动床的物理模型被用来模拟水和沉积物的流动，其中在（30°–90°）之间有五个转向角（θ）。此外，三个床宽比（B _r）（在30％至50％之间的流量（转向与主通道床宽之间的关系）和每种情况（θ）都考虑了5次总排放量在（7.25 L / s至12.25 L / s）之间。结果表明，与90°转向角相比，30和45转向角的比例排放比提高了10％。结果还表明，最低的导流沉积物浓度是由30°（θ）提供的。在所有情况下，与90°转向角相比，平均比例浓度降低了64％。仔细观察分流系统机制，可以确认降低（θ）会导致分流通道中的泥沙浓度降低。总之，通过将（θ）更改为30°或45°而不是90°，可以有效地处理分流河道的水和泥沙排放。