基于平均农渠数量的斗渠流量确定方法

Flow Determination Method of Ditches Based on Average Number of Agricultural Canals

灌区内轮灌斗渠的流量一般根据灌水率和灌溉面积确定。对于灌区内斗渠控制灌溉面积大小不一的情况,斗渠的田间净流量应按各条渠道的灌溉面积占轮灌组灌溉面积的比例进行分配。通过计算每条斗渠控制的平均农渠数量来演算斗渠流量,方法较为简单和准确,并通过相关规范公式验算和实践检验,可作为斗渠规模确定的一种方法来运用。

Flow rate of inner wheel irrigation ditch is generally determined according to irrigation rate and irrigation area. In case of different irrigation areas controlled by head ditch in irrigated areas,net flow of head ditch and field ditch should be distributed according to proportion of irrigation area of each channel in irrigated area of irrigation group. It is simple and accurate to calculate discharge of each canal by calculating average number of agricultural canals controlled by each ditches,and it can be used as a method to determine scale of ditches by checking calculation and practical test by relevant standard formula.