Externally-mounted drainage device for tunnel vault leakage water

The utility model discloses a tunnel vault leakage water externally-mounted drainage device, which belongs to the technical field of tunnel engineering drainage, and comprises a water receiving tank, the water receiving tank comprises a tank body, the tank body is arranged below a tunnel vault leakage water point, a gap is formed between the tank body and a tunnel vault lining structure, and the tank body is fixedly connected with the tunnel vault lining structure; the lower side portion of the groove body is connected with a water outlet pipe which is fixedly connected with a drainage pipe, and the drainage pipe extends downwards to a wall corner along the inner surface of the tunnel lining structure and is communicated with a tunnel drainage system. 本实用新型公开了一种隧道拱顶渗漏水外装式引排装置，属于隧道工程引排水技术领域，包括接水槽，所述接水槽包括槽体，槽体设置在隧道拱顶渗漏水点下方，槽体与隧道拱顶衬砌结构具有间隙，且槽体与隧道拱顶的衬砌结构固定连接；所述槽体下侧部与出水管连接，出水管与排水管固定连接，排水管沿隧道衬砌结构内表面向下延伸至墙角并与隧道排水系统连通。