Automatic intelligent dust falling device for tunnel

The utility model discloses an automatic and intelligent tunnel dust falling device which comprises a guide rail, a dust falling device and a dust falling device. The sliding block is in sliding connection with the guide rail, and the sliding block is driven by a driving device to slide; the laser dust monitor is mounted on the sliding block; the spraying pipe is transversely mounted at the top of the tunnel, and a plurality of atomizing nozzles distributed at intervals are arranged on the spraying pipe in the length direction of the spraying pipe; the water supply device is mounted in the tunnel and used for supplying water to the spraying pipe; the driving device, the laser dust monitor and the water supply device are all in data connection with the control device, and the control device can obtain information detected by the laser dust monitor and control work of the driving device and the water supply device. The laser dust monitor can move back and forth along the guide rail to detect the dust concentrat