摘要
利用InfoWorks ICM软件以武汉长江隧道为例,建立隧道武昌段及其周边区域的排水系统模型,对2013年7月7日武汉长江隧道渍水事件成功进行了模拟重现。对各匝道入口龟背垫高后的现状管网和高区排水系统改造后的管网进行不同降雨重现期下的模拟,发现将隧道各匝道入口路面龟背垫高0.2m可大大减少隧道积水,现状管网和高区排水系统改造后的管网能承受的最大暴雨重现期分别为4.6年和50年,说明在隧道各匝道入口加高龟背和对隧道高区排水系统的改造确实能极大提高隧道抵御渍水风险的能力,模拟分析的结果可为武汉长江隧道及其周边排水系统的规划改造提供技术支撑。
This study applies Infoworks ICM to establish the storm water model of Wuhan Yangtze River Tunnel on the side of Wuchang section .Firstly ,the rainstorm disaster of the tunnel in July 7 ,2013 is numerically reconstructed successfully .After then , simulations are carried out for present and planned drainage pipe networks under different rainfall recurrence period .It is observed that the 0 .2m increase of tunnel entrances with the shape of“turtle-back”can reduce the rainfall flowing into the tunnel significantly . The results also show that the tunnel under present drainage pipe networks can take the risk of rain with 4 .6a rainfall reappearing pe‐riod .This rainfall recurrence period can be increased from 4 .6 a to 50 a under the condition of the planned drainage pipe networks , which indicates the ability of the tunnel against rain disaster is improved greatly after reform .Therefore ,the results of the simulation analysis can provide a technical support for the reform of the drainage system to reduce the rainfall disaster risk of the tunnel .
出处
《中国农村水利水电》
北大核心
2015年第7期112-115,共4页
China Rural Water and Hydropower
关键词
长江隧道
暴雨灾害
城市雨洪模型
风险评估
InfoWorks
Yangtze River Tunnel
InfoWorks
rainstorm disaster
urban storm water model
risk assessment
