大型灌溉系统输水效率与配水效率的计算方法

本文以我国干旱、半干旱地区大型引水灌溉系统为对象,探讨:无分流渠道沿程输水损失非恒定条件下输水效率的正向递推计算;多口分流渠道配水效率的计算原理与计算方法。较固定沿程输水损失计算合理,精度也有提高。并从数学上作了证明。上述计算方法已为河套灌区灌溉效率标准化测试与评估中采用。

The Calculation Method of Water Conveyance,Allocation Efficiency of the Large Size rrigation System

This paper with the object of the large size diversion's irrigation system in the arid and .semiarid regions,china's, is to investigate the positive recursive calculation of water conveyance efficiency of the canal without outlet under the conditions of non-perinanent flow of water conveyance losses along the canal and to investigate the cal-culation principe and method of water allocation efficiency of the canal with multiple outlet canals, comparing with the calculation law of fixed water accuracy is improved. The method is proved mathematically.The calculation method have been adopted by the assessement and standrdization measavement of canal water efficiency in large size irrigation system of The Hetao, China.