引黄灌区渠网泥沙数学模型

引黄渠系一般比较复杂．渠系的泥沙淤积详细模拟比较困难。本文通过建立引黄灌区渠网泥沙数学模型，对引黄渠系的泥沙淤积问题进行了模拟研究．渠系分水分沙与泥沙淤积模拟结果与观测结果符合良好。利用该模型就引水流量和引水含沙量对渠系泥沙淤积的影响进行了模拟研究，得到了相关曲线，增加了对渠系泥沙淤积影响因素的认识。水流泥沙数学模型可以作为研究引黄渠道的泥沙淤积规律的有效手段，可以应用于沉沙措施、调度运行方式研究等方面。

Sediment mathematical model of canal system in the Yellow River irrigation area

The Yellow River irrigation canal system is in general relatively complicated, and it is difficult to make a detailed sedimentation model study. By developing a sediment mathematical model, the sedimentation process in the Yellow River irrigation canal system is simulated. The results of the simulat ion for both the water-and-sediment division proportion and the sediment deposition volume in the canal system are in good agreement with measured data. The influence of flow rate and sediment concentration on canal deposition is analyzed, and the relevant curves are obtained, which brings a better understanding of the influencing factors related with canal deposition. The mathematical model would be a useful tool and it can be applied in siltation control and canal operation scheme planning.