基于管网与河网耦合的上海某地铁地下空间防淹分析

Analysis on Flood Prevention of Underground Space of a Subway in Shanghai Based on Coupling of Pipe Network and River Network

摘要:

近年来，极端天气的出现导致城市尤其是地下空间的防洪除涝难度增加。为了解上海新规划地铁21号线东延伸线施新路站至金闻路站段重要点位在典型降雨工况下的积水情况，利用数值模拟软件Mike+Flood构建区域内涝模型，分析了不同降雨条件下区域的积水情况。研究结果表明：4种工况下，施新路最大积水深度为0.17 m，闻居路最大积水深度为0.45 m，主变附近最大积水深度0.23 m，金闻路附近无明显积水区域。研究结果可为21号线地铁规划建设及类似工程提供参考。

Abstract:

In recent years， the occurrence of extreme weather increases the difficulty of flood control and waterlogging drainage in cities， especially underground spaces. In order to understand the waterlogging situation at the important points from Shixin Road Station to Jinwen Road Station on the east extension of the new planned Metro Line 21 in Shanghai under the typical rainfall conditions， the numerical simulation software Mike+Flood is used to establish a regional waterlogging model and analyze the waterlogging situations in the area under different rainfall conditions. The research results show that under four working conditions， the maximum depth of waterlogging water in Shixin Road is 0.17 m， the maximum depth of waterlogging water in Wenju Road is 0.45 m， and the maximum depth of waterlogging water near the main transformer is 0.23 m. There is no obvious waterlogged area near Jinwen Road. The research results can provide the reference for the planning and construction of Metro Line 21 and similar projects.