Ventilation dust removal and cooling combined system for underground mine roadway tunneling

The invention discloses a ventilation dust removal and cooling combined system for underground mine roadway tunneling. The ventilation dust removal and cooling combined system is formed by combining a heat insulation layer, a local ventilation unit, a water supply unit and a spray dust removal and cooling unit. The heat insulation layer and an air layer (2) between the heat insulation layer and surrounding rock of a tunneling roadway (15) form a composite heat transfer structure; the local ventilation unit comprises an air compression fan (12-1), an air compression cylinder (3), an air draft fan (12-2) and an air draft cylinder (4); the water supply unit comprises a water pump (5), an electric valve (6), a Y-shaped filter (7) and a water supply pipe (8); the spray dust removal and cooling unit comprises a vertical water pipe (10) and a spraying device; and water mist sprayed downwards by an atomizing nozzle forms a water curtain above a tunneling working face (14), and ventilation air flow of the local ventil