现代有轨电车下穿隧道排水工程设计探讨

Discussion on drainage engineering design of modern tram underpass tunnel

根据现代有轨电车下穿隧道的特点,对排水工程设计应考虑的重要设计参数进行了分析。敞开段雨水设计重现期取50年,下穿隧道雨水泵房宜设置3台排水泵(2用1备)。洞口雨水泵房的集水池有效容积,不小于最大一台水泵2.5min的出水量。敞开段每隔一定距离要设置横向排水沟将雨水收集至隧道壁两侧的纵向边沟内,整个隧道区域排水沟的沟底高程上要衔接顺畅。

According to the characteristics of the modern tram under the tunnel,the important design parameters that should be considered in the design of the drainage engineering are analyzed.The return period of the open section rainwater design should be 50 years,and the drainage pump room below the tunnel should be equipped with 3 drainage pumps(Dual-use equipment).The effective volume of the collecting basin of the Dongkou rain pump house is not less than the water output of the largest pump for 2.5 minutes.Open section at a certain distance to set the horizontal row to collect rainwater into the longitudinal side ditch on both sides of the tunnel wall,and the ditch bottom of the entire tunnel area is connected smoothly.