Calibration method and device of SWMM model

• Main Authors: ZENG YINJIN, YANG YUN, MA JINGSHENG, XU FENGRAN, ZHENG YUANQUAN, LI XIAOCHEN, LIANG YANHUI, LIAO MEITING, YU YINGHAO, XU YANQIU, ZHANG ZHONGZHONG, SHI SHENG, SHAO YINLONG, ZHOU XIAORI
• Format: Patent
• Language: Chinese; English
• Published: 15.08.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention relates to a calibration method and device for an SWMM model, and the method comprises the steps: carrying out the simulation of rainfall through obtaining the historical rainfall data of a research region, obtaining the rainfall process data, constructing the SWMM model according to the basic data and the rainfall process data, dividing all sub catchment regions into different types of regions, and carrying out the calibration of the SWMM model. Calculating the dynamic runoff coefficient of each category area and the rainfall duration of the research area to obtain the theoretical rainwater flow of each category area, optimizing the uncertain parameters of the SWMM model to obtain the optimal uncertain parameters, and substituting the optimal uncertain parameters into the SWMM model to generate a calibrated SWMM model. Therefore, the problem that the objective law is violated when the same value is taken from all sub catchment areas of the research area traditionally is solved, the theoretical