Modularized assembly type tunnel ventilation pipeline

The utility model discloses a modularization assembly type tunnel ventilating duct, including hoop, upper air duct, lower air duct and locking mechanism, said upper air duct and said lower air duct both have semi-tubular structure and contact connection through the locking mechanism, said locking mechanism is used for limiting its relative displacement, said hoop has non-closed annular structure, and said hoop has a non-closed annular structure. The hoop is arranged on the outer surface of the upper air pipe and the outer surface of the lower air pipe in a sleeving mode and comprises a hoop clamping groove and hoop clamping teeth, the hoop clamping groove and the hoop clamping teeth are arranged on the non-closed two sides of the hoop respectively, the hoop clamping teeth and the hoop clamping groove are mutually embedded to lock the hoop, and the hoop is used for limiting relative displacement of the upper air pipe and the lower air pipe. The problems that tunnel air pipes are difficult to disassemble, assem