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为检验模型在无率定情况下可能造成的误差,选用SWMM、Mike Urban和InfoWorksICM这三种模型模拟北京建筑工程学院校园的降雨径流情况,模拟时各模型都采用各自的默认参数。结果表明,对于特定的模拟结果,各模型间均存在正相关,且都达到极显著水平;在默认参数下,模拟结果对于模型本身是精确的,默认参数的不同引起了各模型模拟结果的偏差。因此,当利用模型模拟研究区域时,参数率定和验证很有必要。
In order to test the possible error of the model under no-load condition, three models of SWMM, Mike Urban and InfoWorksICM were used to simulate the rainfall runoff of Beijing Institute of Architectural Engineering. Each model adopted its own default parameters. The results show that there is a positive correlation between the models for the specific simulation results, and all of them reach the extremely significant level. Under the default parameters, the simulation results are accurate for the model itself, and the default parameters cause the deviation of the model simulation results . Therefore, when using the model to simulate the study area, parameter calibration and verification are necessary.