SWMM parameter calibration method for area lacking pipeline flow data

• Main Authors: LIU CHENGSHUAI, WU QIANG, LI WENZHONG, HU CAIHONG, ZHAO CHENCHEN, XIE TIANNING, SUN YUE, NIU CHAOJIE
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention provides an SWMM parameter calibration method for an area lacking pipeline flow data, and the method comprises the steps: firstly, determining to-be-calibrated uncertain parameters according to the land utilization condition in an urban hydrological response unit; secondly, sub catchment areas are divided, and a generalized model of a research area is established by applying an SWMM; then, a certain number of ponding points are selected, the actually-measured ponding depth of the ponding points is obtained through field observation, meanwhile, the simulated ponding depth is calculated through a circular truncated cone generalization calibration method, and parameter calibration is conducted by comparing the actually-measured ponding depth and the simulated ponding depth of the ponding points; finally, relative errors and absolute errors are selected for model evaluation, calibration is completed, and SWMM model uncertainty parameter values of the pipeline flow data lacking area are obtained. By