基于MIKE HYDRO River模型的轨交交通施工期防汛安全影响论证

Demonstration of Flood Prevention Security Impact during Rail Transit Construction Period Based on MIKE HYDRO River Model

轨交交通施工期间,受车站结构设计、周边场地限制等因素影响,河道需要断流施工,断流会对区域的防洪除涝安全及水环境产生影响。本文以上海轨道交通13号线西延伸工程为例,构建一维河网水动力模型,分析排涝及引调水工况下水位及水质变化情况。结果表明,平原河网地区个别河道断流对于区域防洪除涝安全影响较小,会严重影响河道断流处的水环境;通过增设导流措施可以减轻断流的影响,为平原河网地区河道断流影响分析及措施制定提供依据。

During the construction of rail transit,due to factors such as station structural design and surrounding site limitations,the river needs to be cut off for construction,which will have an impact on the safety of flood control and water environment in the area.This article takes the West Extension Project of Shanghai Rail Transit Line 13 as an example to construct a one-dimensional river network hydrodynamic model and analyze the changes in water level and quality under drainage and diversion conditions.The results indicate that individual river channel interruptions in plain river network areas have a relatively small impact on regional flood control and waterlogging safety,and will seriously affect the water environment at the point of river channel interruption.By adding diversion measures,the impact of river flow interruption can be reduced,providing a basis for analyzing the impact of river flow interruption in plain river network areas and formulating measures.