Sewer line's inspection shaft in utility tunnel of city

The utility model discloses a sewer line's inspection shaft in utility tunnel of city, including inspection shaft body (1), on the below of inspection shaft body (1) overflows in part and the piping lane, low reaches sewage pipe (2) straight line is in the same direction as connecing, the upper end of the well head of inspection shaft body (1) is provided with well lid (3), be provided with sealing well lid (4) in the well head lower part, there is the distance between the sealing well lid (4) and well lid (3), the upper portion of the wall of a well of inspection shaft body (1) is provided with the air vent, in this air vent built -in breather pipe (5), breather pipe (5) and the outer atmosphere intercommunication of piping lane, still be provided with dump mouth (6) on the wall of a wellof inspection shaft body (1), the position of dump mouth (6) is less than the air vent, dump mouth (6) endotheca flexible waterproof sleeve pipes (8), be provided with seal flange plate (7) on the outside mouth of pipe of fl