畦田灌溉水流演进计算简化模型研

在对水量平衡模型进行修改的基础上，结合零惯量运动方程，以水量平衡方程为基础，对畦灌水流演进模型的结构进行了研究。应用无因次系统模型，求得了模型的显式和隐式解。该模型可以用来计算畦灌水流演进距离。对山东省陈垓引黄灌区畦灌水流演进计算结果表明，该模型比以往使用的模型简单，计算精度与较复杂的零惯量模型的计算精度相当。模型计算不需编程，可以用手算完成全部计算过程，解决了传统的水量平衡模型无法解决的问题。

Simplified Calculation Model for Border Irrigation Water Flow Advance

On the basis of modification of water balance model, and integration with the movement equation of the zero inertia, the structure of the water flow advance model of border irrigation was studied. A system model of dimensionless notations was used to obtain the implicit and explicit solutions of the model, and to calculate the distance of water flow advance of border irrigation. Through application in Chengai Irrigation District of Shandong Province, it is shown that this model is simpler than the models previously used, yet it maintains the same degree of accuracy with complicated zero inertia model. The model requires no programming, and can be easily performed manually, thus the model can solve the problems that are impossible to be solved by traditional water balance methods.