INDIRECT LIQUID LEVEL MONITORING AND ANALYSIS METHOD FOR URBAN DRAINAGE SYSTEM BASED ON DIRECTED TOPOLOGICAL NETWORK

Disclosed in the present invention is an indirect liquid level monitoring and analysis method for an urban drainage system based on a directed topological network. The method comprises the following steps: constructing a drainage pipe network directed topological model and a drainage pipe network database; extracting the serial numbers of upstream and downstream manholes and pipelines corresponding to monitoring points; preliminarily estimating a liquid level; dividing a pipe network into an upstream area, an upper and middle area and a downstream area; calculating a new liquid level for each node and pipeline in the upper and middle area and the downstream area of the monitoring points; and adjusting the place where a liquid level difference at two ends of a pipeline is too great. In view of monitored values acquired by actual monitoring devices, the urban drainage system based on a directed topological network in the present invention indirectly monitors liquid levels of other pipe networks by means of perf