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介绍了郑州市给水管网微观水力模型构建和校验的主要过程,阐述了校验过程中遇到的难点及解决方法。供水企业水力模型构建过程中存在的主要问题是GIS导入过程中出现的数据缺失、异常或冗余,需进行仔细筛选、查找和判断。模型校验是建模过程中非常重要的一个环节,通过采用分区与分类型校验相结合、粗调与微调相结合的方法,使模型达到较高的精度,管网的平均节点压力误差为16kPa,水厂出厂瞬时流量相对误差<10%,满足工况分析的要求。
The main process of constructing and verifying the micro hydraulic model of water supply network in Zhengzhou is introduced. The difficulties encountered in the process of verification and the solutions are discussed. The main problem in the process of constructing water supply enterprise hydraulic model is the lack of data, abnormality or redundancy in the process of GIS import, which needs careful screening, searching and judging. Model checking is a very important step in the process of modeling. Through the combination of partitioning and classification checking, a combination of coarse and fine tuning results in a higher accuracy of the model. The average node pressure error of the pipe network is 16kPa, water factory instantaneous flow rate relative error <10%, to meet the requirements of condition analysis.