城镇供水管网漏损现状分析及漏损控制技术研究进展

Analysis of Leakage Status of Urban Water Supply Network and Research Progress of Leakage Control Technology

城镇发展迅速,供水管长、用水量、普及率都在不断上升,管网越铺越密,随之而来的是管网老化、漏损问题也越来越突出。针对管网漏损问题,多数研究者采用建立管网模型对漏损点进行预测和定位,但由于建模的复杂性、缺乏数据资料以及自然环境等不确定因素,导致建模精确度偏低。同时管网硬件检测不适用于大范围检测,但对于小范围查找精确度较高。可采用管网模型与硬件检测相结合的方式检测漏损区域,即先大范围查找,再小范围精确,提高管网漏损查找的准确性。同时在整体控漏方面,采用DMA分区计量,利用物联网在线监测。分区计量在部分城市和试验区均取得了较好的经济效益和成效,管网漏损率显著下降。

The cities and towns are developing rapidly, and the length of the water supply networks, the water penetration rate and the total amount of water are increasing. In view of the leakage problem of the pipe network, most researchers established network modeling to predict and locate the leakage points, but due to uncertainties such as modeling complexity, lack of data and natural environment, the modeling accuracy is low. At the same time, the hardware detection of the pipe network is not suitable for large-scale detection, but it has high accuracy for small-scale detection. To improve the accuracy of pipe network leakage, the leakage areas can be detected by the combination of the pipe network model and the hardware detection. At the same time, establishing zoning measurement and using Internet of things technology to monitor date flow in real time. DMA method has achieved good economic benefits in some cities and experimental areas. The leakage rate of the pipeline network has been significantly reduced.