基于检查井液位监测的雨污混接诊断方法

Investigation of illicit discharge based on manhole water level monitoring

为了提高雨污混接诊断效率,推进诊断工作进程,提出了基于检查井液位的雨水管网运行状态区域诊断的方法,通过与海曾-威廉公式和普雷斯曼狭缝假设分别耦合建立适用于不同管道条件和水力状态的单井模型和双井模型.最后,将该方法应用于实际工程案例中,运用单井法对研究区域建立计算模型,确定了该研究区域旱季日均混接总量和混接源.

To improve the diagnosis efficiency and promote the work process of illicit discharge.this paper proposed a method for regional diagnosis of storm sewer system running state based on the on line water level monitoring.By being coupled with the Hazen-Williams formula.Single-well model is built for downstream wells with good slopes and favorable hydraulic conditions.By being coupled with the Pressman slot hypothesis.Double-well model is built for channel storage,backwater effects,and reverse flow.Finally.the diagnosis method of storm sewer system running state was applied to a actual project case.The results show the daily average dry-weather inflow and the source of illicit discharge.