摘要：【中文】铁路修建往往受线路影响，要穿越很多隧道，隧道在混凝土衬砌完成后，周围裂隙水被封闭于混凝土衬砌之外，当防水层或衬砌混凝土存在缺陷时，会产生局部地下水渗出。本发明提供一种隧道排水系统，在隧道的围岩内需要排水的位置设置钻孔，在钻孔中放置排水管，排水管的进水口处于钻孔的底部，排水管的出水口与启动装置连接，启动装置放置在隧道的边沟中，启动装置与边沟底部固定。本发明发挥作用可以随着降雨发生，边沟水位上涨同步进行，随着边沟水位淹没启动装置，可以停止工作。 【EN】Railway construction is often influenced by lines and needs to pass through a plurality of tunnels, after concrete lining of the tunnels is completed, surrounding crack water is sealed outside the concrete lining, and when a waterproof layer or lining concrete has defects, local underground water seepage can be generated. The invention provides a tunnel drainage system, wherein a drill hole is arranged at a position needing drainage in surrounding rocks of a tunnel, a drain pipe is arranged in the drill hole, a water inlet of the drain pipe is positioned at the bottom of the drill hole, a water outlet of the drain pipe is connected with a starting device, the starting device is arranged in a side ditch of the tunnel, and the starting device is fixed with the bottom of the side ditch. The invention can synchronously increase the water level of the side ditch along with the occurrence of rainfall, and can stop working along with the submergence of the water level of the side ditch in the starting device.