运营前地铁线路防洪(涝)评估研究——以南京地铁5号线为例

Study on Flood Control (Waterlogging) Assessment of Metro Lines before Operation for Nanjing Metro Line 5

在地铁线路投入运营前进行防洪(涝)专项论证,从水利专业角度为地铁设计及施工阶段提出防洪(涝)建议,对于减小地铁运营安全风险具有积极的作用。以南京地铁5号线为例,根据地铁自身及所处片区的地形地貌、流域水系特点,综合城市建设布局及城市防洪、排涝体系,确定了防洪(涝)评估思路与方法,从外来洪水、区域涝水、片区排水角度开展新建地铁线路防洪(涝)评估研究,在评估的基础上提出了切实可行防洪(涝)应对措施。

A special demonstration on flood control(waterlogging)is carried out before a metro line is put into operation.The suggestions for flood control(waterlogging)are proposed for the metro design and construction stages from the perspective of the water conservancy profession,which has a positive effect on reducing the safety risks of metro operation.Taking Nanjing Metro Line 5 as an example,according to the characteristics of the metro itself and the topography,geomorphology and watershed system of the area where the metro is located,and by integrating the urban construction layout and the urban flood control and drainage system,the flood control(waterlogging)assessment ideas and methods are determined.The flood control(waterlogging)assessment study of the new metro line is carried out from the perspectives of external flood,regional waterlogging and areal drainage.On the basis of the assessment,the feasible measures for flood control(waterlogging)are put forward.