线性规划在灌区用水管理中的应用

采用流速仪测量渠道流量的灌区,在其测流及水量计算过程中,由于测验断面或人为因素,不可避免地存在着一定误差,有时出现上游测站水量小于下站水量或站间计算配水量明显偏大、偏小等不合理现象.应用线性规划理论中的修正单纯形法,提出水量平差模型,对不合理的测站水量进行修正,以提高配水统计和配水调度的精度.通过在位山灌区的实际运用,取得了明显效果,灌区配水调度也因此实现了由经验定性决策向科学定量决策的过渡,提高了用水管理水平.

Application of linear planning method to water management of irrigation area

In the irrigation area which adopts the flow measuring instrument, there are inevitably a lot of error in the process of measuring and calculating the water because of the section measured or person factors. Some illogical phenomena occur now and then. For example, sometimes the water measured on the upriver station is more than the lower station, and sometimes the water calculated between the stations is more or less obviously inaccurate. By using the revised simplex method of the linear planning theory, a model for adjusting water is proposed to adjust water of the illogical measuring stations and increase the precision of the statistics of allocated water and allocation regulation. Through application to Weishan irrigation area, it is shown that the model has a good effect. The decisive method in theallocation regulation of irrigation area realizes transformation from the practical qualitative analysis to the scientific quantitative analysis. So water management becomes more scientific.