Optimal Evacuation Scheme Based on Dam-Break Flood Numerical Simulation  

作　　者：王晓玲 孙蕊蕊 周正印 黄凌 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University [2]Shenzhen Water Engineering Construction Management Center

出　　处：《Transactions of Tianjin University》2011年第6期424-430,共7页天津大学学报（英文版）

基　　金：Supported by Natural Science Foundation of Tianjin (No.09JCYBJC08700);the Foundation for Innovative Research Groups of National Natural Science Foundation of China (No.51021004);National Natural Science Foundation of China (No.90815019)

摘　　要：The optimal evacuation scheme is studied based on the dam-break flood numerical simulation. A three- dimensional dam-break mathematical model combined with the volume of fluid （VOF） method is adopted. According to the hydraulic information obtained from numerical simulation and selecting principles of evacuation emergency scheme, evacuation route analysis model is proposed, which consists of the road right model and random degree model. The road right model is used to calculate the consumption time in roads, and the random degree model is used to judge whether the roads are blocked. Then the shortest evacuation route is obtained based on Dijstra algorithm. Gongming Reservoir located in Shenzhen is taken as a case to study. The results show that industrial area I is flooded at 2 500 s, and after 5 500 s, most of industrial area II is submerged. The Hushan, Loucun Forest and Chaishan are not flooded around industrial area I and II. Based on the above analysis, the optimal evacuation scheme is determined.The optimal evacuation scheme is studied based on the dam-break flood numerical simulation. A threedimensional dam-break mathematical model combined with the volume of fluid (VOF) method is adopted. According to the hydraulic information obtained from numerical simulation and selecting principles of evacuation emergency scheme, evacuation route analysis model is proposed, which consists of the road right model and random degree model. The road right model is used to calculate the consumption time in roads, and the random degree model is used to judge whether the roads are blocked. Then the shortest evacuation route is obtained based on Dijstra algorithm. Gongming Reservoir located in Shenzhen is taken as a case to study. The results show that industrial area Ⅰ is flooded at 2 500 s, and after 5 500 s, most of industrial area Ⅱ is submerged. The Hushan, Loucun Forest and Chaishan are not flooded around industrial area Ⅰand Ⅱ. Based on the above analysis, the optimal evacuation scheme is determined.

关 键 词：three-dimensional dam-break numerical model volume of fluid method evacuation route analysis model evacuation scheme 

分 类 号：O242.1[理学—计算数学] TV122.4[理学—数学]