Prefabricated utility tunnel's flat mouthful of butt joint connected node

The utility model relates to a prefabricated utility tunnel connects technical field, discloses a prefabricated utility tunnel's flat mouthful of butt joint connected node. The utility model disclosesarc bolt, the sealing rod that lies in the seam between the adjacent tube coupling and the blotter of connecting the adjacent tube coupling of piping lane, the terminal surface of two adjacent tube couplings is vertical plane, and both ends face lower part symmetry and cooperation are equipped with the arc bolt hole, and the arc bolt passes the arc bolt hole of two tube couplings in proper order,both ends pass the mounting plate respectively, stretch into the mounting groove in, fixed through the nut, installation slot position is on the inner wall of tube coupling, two tube coupling terminal surfaces of seam upper segment are respectively, the symmetry is equipped with the stagnant water recess, are equipped with the sealing rod in the stagnant water recess, the sealing rod sets up along tube coupling interface,