Viewing device is reserved in drain pipe later stage desilting punishment of tunnel central authorities

The utility model belongs to the technical field of tunnel drainage system maintains, particularly, relate to a viewing device is reserved in drain pipe later stage desilting punishment of tunnel central authorities. The device includes the steel member by anchor reinforcing bar, rectangle steel sheet and round tube composition, the pipe rectangle steel sheet that is stamped suitable for reading, surface distribution has many anchor reinforcing bars on this rectangle steel sheet, the steel member is located water drilling, waters the fast hardening concrete after its top is filled with, central drain pipe is down access to from the road surface structure to water drilling. Compared with the prior art, viewing device is reserved in drain pipe later stage desilting punishment of tunnel central authorities reserve to observe the steel member through setting up, observe the tunnel central authorities stifled position of drain pipe what to play the effect of the stifled thing of clearance what, can the volume of r