The invention discloses a
tunnel engineering mining method excavation blasting instantaneous
dust fall process. The
tunnel engineering mining method excavation blasting instantaneous
dust fall process is used for effectively utilizing blasting shock
waves to form a high-density water mist closed area at the front end of a tunnel excavation face during mining method excavation blasting. The
tunnel engineering mining method excavation blasting instantaneous
dust fall process comprises the steps that after waterproof explosives and waterproof detonating detonators are installed on the tunnel excavation face, simple
sleeve valve steel
pipe mist spraying equipment is adopted in the range away from a dust dense area of a blasting face, spraying is carried out for more than 5 minutes, the water mist closed area is formed, then
detonation blasting is carried out, high-speed vibration
impact is carried out through the blasting shock
waves, dust molecules and high-density water molecules move relatively at a high speed in the water mist closed area, mixed and dried
dust particles rapidly absorb the water molecules in the water mist, the weight of the water molecules is sharply increased, the water molecules rapidly fall onto the ground, and the purpose of instantaneous dust removal is achieved. The tunnel
engineering mining method excavation blasting instantaneous dust fall process effectively solves the problem that dust in tunnel
engineering mining method excavation blasting is difficult to quickly eliminate.