引黄灌区非均匀沙运动数学模型研究  

Study on mathematical modeling for non-uniform sediment transport in an irrigation district along the lower reach of the Yellow River

作　　者：胡健[1] 戴清[1] 袁玉平[1] 

机构地区：[1]中国水利水电科学研究院泥沙研究所,北京100044

出　　处：《中国水利水电科学研究院学报》2008年第1期27-31,42,共6页Journal of China Institute of Water Resources and Hydropower Research

基　　金：科学技术部科研院所社会公益研究专项资助(2004DIB4J169)

摘　　要：泥沙问题是制约引黄灌区可持续发展的重要因素,灌渠的规划设计阶段和日常的运行管理中都需要掌握渠道的泥沙冲淤情况。本文根据一维水流非均匀沙运动方程,结合灌区灌溉特点和测量资料情况作了概化处理,建立了适合于灌区的非均匀沙冲淤计算的数学模型。模型中考虑渠系沿程的分水分沙和冲淤交换,将断面流量按渠段划分并计算,悬移质泥沙按粒径分组计算,根据分组水流挟沙力和非均匀悬移质不平衡输沙公式计算泥沙含沙量。模型采用山东簸箕李灌区的实测资料进行验证,表明模型可用于预测不同来水来沙条件下非均匀沙在渠道内的运动淤积分布情况。Based on the one-dimensional equations of flow and non-uniform sediment movement, a mathematical model is established to calculate the non-uniform sediment transportation and siltation in an irrigation canal＇system. The model has been simplified rationally, taking account of the characteristics of flow and sediment transport and the measured data in the irrigation canals. In the model, the modes of flow and sediment diversion and scouring and silting along canal systems are considered, the suspendbd sediment movement is calculated in terms of sorted particle sizes, the flow and sediment is simulated on the basis of divided sections of the canal. The model is verified with the measured data in the Bojili irrigation district in Shandong province. The results show that the model can be used to predict nonuniform sediment movement in irrigation canals under various conditions of incoming flow and sediment.

关 键 词：引黄灌区 非均匀沙 数学模型 

分 类 号：TV142[水利工程—水力学及河流动力学]