Abstract:The rainwater pipe network and interception facilities in the plain river area are systematically evaluated and analyzed on the basis of on-line monitoring and drainage models. The rainwater pipe network in the area controlled by the end gate shaft is studied. There is a certain depth of water in dry days. Some gate shafts are not opened in time after rainfall. The water level after opening is greatly different from that of dry days, which may lead to poor upstream drainage and waterlogging risk, and also affect the operation of downstream sewage system. The water accumulation risk distribution map is obtained through the simulation analysis, and is overlaid with the gate shaft and its upstream pipe network distribution map, which can identify the impact of upstream waterlogging and downstream sewage pumping station discharge loads on the gate shafts. The operation scheduling suggestion of gate shaft is put forward to deal with the risk of waterlogging. The combination of on-line monitoring and model simulation evaluation can effectively support the diagnosis and evaluation, planning and reconstruction, and management and maintenance decision of drainage pipe network operation.
