Method for reducing surface blasting dust

The invention discloses a method for reducing surface blasting dust, and particularly relates to the field of engineering blasting. A dust blocking mechanism is included, the dust blocking mechanism includes a water bag and a water seal, the water seal is arranged inside the water bag, and the water seal includes water and surfactants. The method for blasting by using the dust blocking mechanism is that the water bag is manufactured, the water bag is filled with a certain number of surfactants, then a small amount of water is injected, and the water bag is slowly put into a gun hole; water iscontinuously poured into the water bag until the water is flush with the ground; and the top end of the water bag is tied to complete the water seal, and then a user needs to wait for explosion. By means of the method, the water bag containing the water seal is used as the dust blocking mechanism to be placed in the gun hole, gunpowder and gun mud at the bottom are blocked, when the gunpowder is ignited and detonated, the