城市供水管网漏损及控制措施（Leakage and control measures of urban water supply network）.doc

城市供水管网漏损及控制措施（Leakage and control measures of urban water supply network） The leakage and control measures of city water supply network There are 1 problems of city water supply network: 1.1 severe lack of basic information, a large number of design, construction and completion data and charts have been using artificial management, with the continuous development of network construction, not the manual management mode to meet the requirements of the new management, in addition, the construction of the water supply network belongs to the underground engineering, the use of conventional measuring technology, water supply pipe line and a valve node is difficult the precise positioning. 1.2 due to the laying of water supply pipe network in different times, different materials (cement pipe, cast iron pipe, ductile iron pipes, FRP pipe, PE pipe, steel pipe, ABS pipe, PPR pipe and so on) caused by the pipeline pressure bearing capacity of different regions, the aging pipeline corrosion caused direct [3] pipe explosion and leakage. 1.3 countries in recent years to increase the construction of infrastructure, the road widening transformation on the part of the road network, some enter the motor vehicle lanes, pipeline depth is too shallow, the load is too large, the probability of increased pipeline running water. At the same time, some construction units due to lack of experience or water supply pipeline drawings inaccurate, resulting in more bad dug pipelines, increase the citys pipe network leakage. 1.4 pipeline construction is not standardized, pipeline laying UNTAMPED backfill foundation, according to the standard of backfill, pipeline elbow without supporting pier and so on, all these to the pipeline running water potential problems. The 1.5 gate Water Leakage city gate is more serious, because of insufficient maintenance cycle, part of running water gate gate some serious, strict, do not move, can not stop water pipeline maintenance, which undoubtedly increases the le