水资源保护2018，Vol.34Issue(4)：1-7,7.DOI:10.3880/j.issn.1004-6933.2018.04.01
高速公路雨水径流污染浓度的系统动力学模拟
System dynamics simulation of pollution concentration of rainwater runoff on expressway
摘要
Abstract
As for the pollution concentration of rainwater runoff on the expressway changed randomly and complicatedly,a system dynamics model for pollutant concentration evolution in rainwater runoff was built to study the influence of traffic flow characteristics,expressway characteristics,and rainfall event characteristics on the pollution concentration of rainfall runoff.The simulation software,Anylogic,was applied to conduct fitting analysis on sample data of 21 rainfall events on five expressways.Through the sensitivity analysis on the parameters of rainfall duration,runoff depth,rain capacity,etc.,the time-varying regularity of the pollution concentration of rainwater runoff in different rainfall events was clarified.The results shows that the system dynamics model proposed in this paper can simulate the changes of pollution concentration in the rainfall events accurately.In the certain rainfall event with high intensity and short duration,the pollution concentration of rainwater runoff on expressway is relatively high,which has great influence on the receiving water body along the expressway.There is a positive correlation between the rainfall runoff depth and pollution concentration,and the max release concentration of pollution emerges earlier in the high rainfall runoff than in the low rainfall runoff.Therefore,in the early stage of the rainfall event,the average pollution concentration of rainfall runoff can be significantly reduced if reasonable control methods are adopted.关键词
雨水径流/污染浓度/高速公路/系统动力学模型/模拟仿真Key words
rainwater runoff/pollution concentration/expressway/system dynamics model/simulation分类
资源环境引用本文复制引用
沈金星,王沛芳..高速公路雨水径流污染浓度的系统动力学模拟[J].水资源保护,2018,34(4):1-7,7.基金项目
河海大学浅水湖泊综合治理与资源开发教育部重点实验室开放基金(2015B06114) （2015B06114）
江苏省博士后科研资助计划(1701086B) （1701086B）
