山岭地形区域地铁车辆段场排水设计研究

Study on drainage design of metro depot inmountainous terrain area

随着地铁不断向外辐射,位于城市周边山岭地形区域的地铁车辆段场越来越常见,其边界条件复杂且特殊。雨季时,此类车辆段场用地区域内通常存在大面积的雨水汇集,合理的排水方案设计对其运营安全至关重要,并且可以最大程度地保护原状水土。以武汉地铁7号线南延线纸坊停车场为例,在满足相关设计要求的前提下,充分结合地形特点,从车辆段场场坪标高、汇水面积、暴雨径流计算、排水路径、横断面设计等方面展开计算和全面分析,最后得出所采用的设计方案及计算结果均满足需求,也在实际工程运营中得到很好的检验。此研究结果可供其他地铁车辆段工程参考。

With the continuous expansion of metro lines,the metro depot located in the mountainous terrain area around the city is more and more common,and its vicinity conditions are complex and special.There is a large area of rainwater gathering in such depot area.Optimal design of drainage scheme is very important to the operational safety of the depot project,protecting the undisturbed soil and water to the greatest extent.Taking Zhifang parking lot of south extension line of Wuhan metro line 7 as an example,under the premise of meeting the relevant design requirements and fully taking into consideration of the terrain characteristics,the calculation and comprehensive analysis are carried out from the aspects of yard fl oor elevation,catchment area,rainstorm runoff calculation,drainage path,cross-section design,etc.It is concluded that the design scheme and calculation results meet the requirements and are also well tested and verifi ed in actual practice of engineering work and operation.The research results are to be used as reference for other metro depot projects.