新版漏损评定标准下的水平衡分析实例研究

A case study of water balance analysis under the new versionof leakage assessment standard

根据我国新修订的《城镇供水管网漏损控制及评定标准》(CJJ 92-2016)水量平衡分析的相关要求,重点阐述了未计量水量和漏失水量等关键组成部分的计算方法。其中,注册用户水量中的未计量水量主要通过水力学原理,按照实际情况选取参数计算;漏失水量则通过水量平衡表扣减和漏失水量分项组成的计算累加两种方法进行对比分析。最后,以杭州市某区域的漏损水量评价分析,得出各部分水量所占的比例,方法可供其他水司的漏损控制工作提供参考。

This article introduces the water balance defined in the new standard Standard for water loss control and assessment of urban water distribution system and focuses on the calculation of unmetered consumption and real losses. The unmetered consumption water is calculated according to the principle of hydraulics. Its parameters are chosen based on the actual situation. The real losses is calculated by compa- ring the water balance deduction with the sum of partial composition. However, for some incomplete Dis- trict Metering Areas （DMA）, the determination of the real losses should be based on the water balance. Finally, the composition of each part in the water balance is illustrated by an example of a certain area in Hangzhou, which can make guidance for the leakage control work.