基于InfoWorks ICM的广州市H区流域排水系统模型验证

Validation of Watershed Drainage System Based on InfoWorks ICM Model for H Zone of Guangzhou City

以我国深层隧道排水系统工程--广州市H区流域试验段为例,基于InfoWorks ICM建立的2D水力模型,结合管网监测系统,对流域进行分区,选取11场实测降雨及22个液位监测点的实测数据对模型进行分区模拟验证。将相同液位点的模拟结果与实测结果进行对比,以两者最大差值≤150 mm为验证正确的标准,考察模型与研究流域吻合度。验证计算得出,降雨事件验证正确的事件率为81.8%,液位监测点验证正确率达到84.3%,验证结果得出模型吻合度较高,保证了后续利用该模型进行H区流域排水系统改造与调度分析等的可靠性。

The paper introduces drainage system engineering of deep tunnels in China,test section of H zone in Guangzhou is taken as an example.Based on 2 D hydraulic model established by InfoWorks ICM and combined with pipeline network monitoring system,the basin is divided and 11 measured rainfall and 22 liquid level monitoring points are chose to simulate and verify the model.Simulation results of the same liquid site are compared with measured results.Taking the maximum difference between the two which is below 150 mm as correct standard,the coincidence between the model and the study basin is investigated.The validation calculation shows that validation rate of rainfall events is 81.8%,while liquid level monitoring points is 84.3%.The validation results show that the model has high consistency,which guarantees the reliability of subsequent use of the model for reconstruction and dispatch analysis of drainage system in H zone.