具有数据保护功能的排水管网自动简化技术  

Automatic Simplification of Drainage Network with Data Protection Functior

作　　者：王芳 Wang Fang(Wuhan Planning&Design Institute(Wuhan Transportation Development Strategy Institute),Wuhan 430014,China)

机构地区：[1]武汉市规划研究院(武汉市交通发展战略研究院),湖北武汉430014

出　　处：《市政技术》2024年第4期237-244,共8页Journal of Municipal Technology

摘　　要：在城市排水管网水力建模过程中,管网简化是提高模拟效率的必要措施。针对目前管网简化技术存在自动化程度低和破坏原始管网数据等问题,设计了一种具有数据保护功能的排水管网自动简化技术。通过引入管网要素的简化状态标识,并为其扩充适当的简化特征字段用以描述简化后节点、管段和汇水子面积的拓扑关系。以广度优先遍历为基础进行枝状管裁剪和同属性串联管段合并,从而实现在保护原始数据情况下自动完成管网简化。通过实际案例对该方法的可行性进行了验证,结果表明简化前后管网的水力模拟结果相差较小且模拟耗时压缩为原始管网模型的5.5%左右。During the hydraulic modeling process of urban drainage network,network simplification is necessary to improve the simulation efficiency.In order to solve the problems of low automation and destruction of original net-work data for current network simplification technology,a drainage network automatic simplification technology with data protection function was designed.By introducing simplified status identification of network elements,the appropriate simplified feature fields were extended to describe the topological relationship of simplified node,pipeline and subcatchment area.Based on breadth-first traversal,the branch pipe trimming and serial pipes were merged with the same attribute so that the network can be simplified automatically under the condition of protecting the original data.The feasibility of this method was verified by a practical case.The results show that the the hydraulic sim-ulation results of the networks before and after simplification is smaller and the simulation time can be compressed to about 5.5%of the original network model.

关 键 词：GIS 排水管网 管网简化 数据保护 广度优先遍历 

分 类 号：TU992[建筑科学—市政工程]