Be applied to utility tunnel's drainage inspection shaft

The utility model discloses a be applied to utility tunnel's drainage inspection shaft, the utility tunnel lower part is rain, sewage passageway, and rain, sewage passageway every certain distance are equipped with the inspection shaft that accesss to ground, its characterized in that the part that overflows of drainage inspection shaft is located same straight line with upstream and downstream rain, sewage passageway, and the exit level of inspection shaft is moved to piping lane one side, and the inspection shaft is imported and exported and is upwards access to ground. The utility model has the advantages of it is following: the inspection shaft can not influence laying of top pipeline, and the top pipeline is laid succinct smoothly, the inspection shaft can not influence laying of top pipeline for the homonymy top pipeline solenoid canal of can attaching most importance to, the inspection shaft overflows part and upstream and downstream rain, the smooth and easy linking of sewage pipe (canal), the difficu