浅析线路坡度对区间洞口雨水泵站设计的影响

Elementary Analysis on Influence of Line Gradient on Design of Rainwater Pumping Station at Portal of Areas

以南京地铁两座区间洞口雨水泵站设计为例,分析了汇水面积、地面集流时间对雨水泵站设计流量的影响;指出线路坡度可直接影响雨水的地面集流时间,进而影响设计暴雨强度的计算,即在相同重现期、相同暴雨强度公式的情况下,设计暴雨强度的计算结果也可能不一样;雨水排水泵站的设计规模应根据实际情况计算确定,以确保暴雨工况下安全运行。

Takingthedesignoftworainwaterpumpingstationsattheportalofareasin Nanjing Metroasanexample,the article analyzes the influence of catchment area and ground collecting time on the design flow of rainwater pumping station, and points out the line gradient can directly influence the ground collecting time of rainwater so as to influence the calculation of design rainstorm intensity. Even under the condition of same return period and same rainstorm intensity formula, the calculation result of design rainstorm intensity also may be different. The design scaleofrainwaterdrainagepumpingstationshouldbebasedonthepracticalconditiontocalculateanddeterminein ordertoensurethesafeoperationduringrainstorm.