Analysis of Causes and Discussion of Countermeasures for the High Water Level Operation of the Sewage Pipe Network in Hexi Area
In the Hexi area of a city,the sewage pipe network has been operating at a high water level for a long time.The actual operating water level is 0.88～3.60 m above the pipe top,which is 1.36～4.60 m higher than the normal operating water level.The high water level operation has a significant impact on daily operation and maintenance,pipe inspection and renovation construction and improving the inflow concentration of water purification plants.In order to reduce the operating water level of the sewage pipe network,the various links of the sewage pipe network,the pumping station,and the water purification plant are studied to analyze the reasons for the high water level oper-ation of the local sewage pipe network in Hexi area,and propose engineering measures such as reducing the water level of rivers,temporary water diversion,improving the separation of rainwater and sewage,and repairing the pipe network during the early detection,construction,and operation and maintenance periods.In addition,non engi-neering measures of emphasizing construction and optimizing operation modes are combined to reduce the water lev-el of the sewage pipe network,restore the normal operation function of the sewage pipeline network.
sewage pipe networkhigh water level operationexternal water intrusionlowering water levelfacility renovation
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