应用集对分析数学模型对给水管网综合水质的模拟分析

Simulation Analysis for Application of Set Pair Mathematic Model in Integrated Water Quality of Water Supply Distribution Networks

集对分析是处理随机变化问题的一种重要的数学理论,但尚未在给水管网水质评价中得到广泛应用。文中建立了给水管网综合水质评价的集对分析数学模型,对给水管网中的水质等级进行评价。通过模拟计算得到监测点实测值与分级标准值的联系度的量化数据,判断管网中多种评价指标作用下综合水质的变化情况,判定其综合水质的等级。研究选取实例模拟计算,分析水质变化原因,并提出改进措施,验证集对分析数学模型对管网综合水质评价的正确性。

Set pair analysis(SPA)is an important mathematical theory to deal with the problem of random changes but it have not been widely used in integrated water quality(IWQ)evaluation of water supply distribution network(WSDN).In this paper,a SPA mathematical model for comprehensive IWQ of WSDN was established to evaluate the water quality grade of WSDN.Through simulation calculation,the quantitative data of connection degree between measured value of monitoring points and classification standard value could be obtained.And changes of comprehensive water quality under the action of various evaluation water quality indexes in the pipe network could be judged,so as to determine comprehensive water quality grade.In this study,an example was selected for simulation calculation.The causes of water quality change were analyzed.And improvement measures were proposed,so as to verify the correctness of the SPA mathematical model for the comprehensive IWQ evaluation of the WSDN.