Automatic dust falling and spraying system for underground roadway

The utility model relates to the technical field of coal mine ventilation and dust prevention and control, in particular to an automatic dust falling and spraying system for an underground roadway, which adopts a dust sensor to monitor the dust concentration in an excavation working face in real time and performs automatic dust removal operation when the dust concentration exceeds a dust concentration threshold value. Unmanned automatic control of linkage operation of dust detection and spraying dust falling is achieved, and the underground coal dust falling and removing efficiency is improved. Meanwhile, an infrared sensor is arranged in the roadway to monitor personnel or equipment passing through the spraying area in real time, when the personnel or the equipment enters the spraying area, water spraying is automatically stopped, safety of the personnel and the equipment is guaranteed, and when the personnel or the equipment leaves the spraying area, water spraying is started; and the safety of field operat