核事故应急交通网络撤离时间可靠性研究
Study on the Reliability of Evacuation Time of Nuclear Accident Emergency Traffic Network
戴剑勇 1李佩东 1张美荣 1甘美艳 1张雨婷 1高文卉1
作者信息
- 1. 南华大学资源环境与安全工程学院,湖南 衡阳 421001;核设施应急安全作业技术与装备湖南省重点实验室,湖南 衡阳 421001
- 折叠
摘要
撤离时间估算是核事故应急决策的重要依据,但往往受到核事故下复杂情况的影响,导致同一条撤离路径的撤离时间发生巨大变化.本文提出撤离时间可靠性来衡量各路径的撤离能力.首先运用复杂网络构建撤离交通网络模型并计算不同风向区间内路段累积剂量,然后采用辐射量-Dijkstra算法得到集合点到安置点的最优撤离路径;结合改进的路阻函数,探究撤离路径在不同天气、撤离方式下的撤离时间可靠性.结果表明:大雨和风雾条件下核电厂撤离时间可靠性分别下降 5.3%和 9.2%;组织撤离占比 50%～60%时,撤离时间可靠性最高.
Abstract
Evacuation time estimation is an important basis for nuclear accident emergency decision-making,but it is often affected by the complex situation under nuclear accidents,resulting in a huge variation in the evacuation time of the same evacuation path.This paper proposes the reliability of evacuation time to measure the evacuation ability of each path.Firstly,the complex network is used to construct the evacuation traffic network model and calculate the cumulative dose of the road section in different wind direction intervals.Then,the optimal evacuation path from the assembly point to the resettlement point is obtained by using the radiation-Dijkstra algorithm.Combined with the improved road resistance function,the reliability of evacuation time under different weather and evacuation modes is explored.The results show that the reliability of evacuation time of nuclear power plant decreases by 5.3%and 9.2%respectively under heavy rain and wind fog conditions.When the evacuation ratio of the organization is 50%～60%,the reliability of the evacuation time is the highest.
关键词
应急撤离网络/辐射剂量/Dijkstra算法/撤离时间可靠性Key words
Emergency evacuation network/Radiation/Dijkstra algorithm/Reliability of evacuation time引用本文复制引用
出版年
2024
NETL
NSTL
万方数据