供水管网事故时关阀优化及影响区分析  

Analysis on the optimal valve closing and the influence area in water supply network emergencies

作　　者：张睿[1] 徐得潜[1] 张丽峰[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《给水排水》2011年第3期148-152,共5页Water & Wastewater Engineering

摘　　要：随着城市供水行业信息化的发展,发生爆管等事故后多采用广度优先算法(BFS)得出初步的关阀方案,经进一步分析剔除多余被关闭的阀门,最终实现对关阀方案的优化。基于管网信息化的数据支持,分别考虑复杂管网树状和环状系统,避免了BFS的弊端,能够直接得到优化的关阀方案。采用水压变化程度来定义事故影响百分数,通过对事故关阀前后的管网系统进行平差计算,得出各节点水压和各管段流向的变化,由此确定关阀动作引起的事故影响区和危险控制点。With the development of informationization of water supply industry,breadth-first search（BFS） is usually applied to obtain the preliminary valve closing scheme in water supply network emergencies.Then the scheme is optimized to pick out the unnecessary ones that have been closed by further analysis.Based on the data support from water supply network informationization,the optimal valve closing scheme can be drawn directly by calculating the tree-type and the looped networks system respectively,which can eliminate the defects of BFS.The changing degree of hydraulic pressure is employed to define the accident influence percentage.Through the hydraulic adjustment analysis on the network system before and after the emergency,each node pressures and the changes in pipe flowing directions can be detected.These data can be used to confirm the emergency influenced areas and the risk-controlling points.

关 键 词：供水管网 广度优先搜索 关阀分析 影响区分析 

分 类 号：TU991.36[建筑科学—市政工程]