水力模型在市政供水管网改造事故中的应用实践

Application and Practice of Hydraulic Model in Municipal Water Supply Network Reconstruction Accident

详细介绍了北京市某管网改造过程中居民区出现的无水水微事故及事故处置措施,并对事故原因进行了分析。采用供水管网水力模型,对事故范围内供水管网进行模拟,结果表明,管网改造过程中关闭闸门使事故范围内管网供水格局改变,导致管网水流方向、流速、水压和流量发生改变。结合管网改造事故及处置措施,对北京市供水管网管理和改造工作提出了建议与改进措施。

This paper elaborates the waterless micro‑accident in a residential area during pipe network reconstruction in Beijing and the measures to deal with the accident,and analyzes the causes of the accident.The hydraulic model of water supply network is used to simulate the pipe network within the scope of the accident.The simulation results show that the water supply pattern within the scope of the accident was changed by the closure of the gate in the process of pipe network reconstruction,leading to changes in the flow direction,velocity,pressure and flow of the pipe network.Based on the pipe network reconstruction accident and countermeasures,suggestions and improvement measures are put forward for the management and renovation of Beijing water supply pipe network.