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当前所普遍采用的灌溉水利用系数指标并不能准确评价井渠灌区水资源总体利用状况,也无法计算灌区真实节水量。从库江山灌区概况出发,通过建立井渠结合灌区水量平衡模型,对灌溉过程中的水量损耗与利用途径进行探讨,提出灌溉水漏损系数概念,并对灌水量漏损系数和真实节水量的计算公式进行推导与真实性验证。库江山灌区真实节水量计算结果表明,计算方法及过程基本合理。
The current widely used index of irrigation water utilization coefficient can not accurately evaluate the overall utilization of water resources in well and canyon irrigated area, nor can it calculate the actual water saving in irrigated area. Based on the general situation of Kuqiangshan Irrigation District, the water loss and utilization in irrigation process are discussed by establishing a water balance model combining well and canal, and the concept of leakage coefficient of irrigation water is put forward. And the leakage coefficient of leakage and real water saving Calculation formula deduction and authenticity verification. The actual water-saving calculation results of the Kujiangshan Irrigation District show that the calculation method and process are basically reasonable.