地铁站点防洪排涝风险评价研究

Flood Control and Waterlogging Risk Assessment of Metro Stations

随着城市化的发展,地铁成为许多大中城市缓解地面交通的有效途径,而随着大量地铁的修建,地铁基坑塌陷、进水和站点淹没等事故时有发生,地铁站点的防洪排涝成为一个新的研究课题。本研究以成都地铁2号线西延线6个站点为例,将地铁站点防洪作为一个风险问题加以分析和研究,考虑影响地铁站点的防洪排涝因子,采用模糊属性评判方法,系统分析站点的防洪排涝风险等级,并对站点进行水文测算,给出在设计洪水条件下各站点可能的淹没水深,指导地铁站点建设和运行过程中防洪排涝工作的顺利进行。

With the development of urbanization in china,the subway in many cities becomes an effective way to ease on-ground transportation.With the construction of a large number of metro,accidents such as subway excavation collapse,water intake and submerged sites have happened.The flood control of metro stations becomes a new research topic.The metro flood control is studied as a risk problem in this paper.Adopting fuzzy attribute judgement method,the risk grade of metro stations is evaluated based on the analysis of various factors of flood control and waterlogging.A hydrological calculation is carried out,and the submerged depth in conditions of design flood is given.Taking the six stations of Chengdu metro line 2 as an example,to provide a more reliable basis for the flood control and waterlogging of metro stations.