The invention relates to a blasting
dust fall air bag watering device, which specifically comprises a gas production
system, a gas storage
system and a water spraying
system, wherein the gas production system comprises a detonating tube
insertion channel, bayonet rubber, an iron shell, sealing paper, a gas production agent (a mixture of pentaaminotetrazole and
potassium perchlorate), a
metal knitted filter screen, vent holes and a heat insulation net, the gas storage system comprises a temporary gas storage chamber, a one-way vent valve and an elastic gas storage bag, and the water spraying system comprises a
water storage bag, a water inlet cover and a one-way drainage valve (a water inlet hole, a spring, a sealing
rubber ring, a sealing
rubber ring supporting plate, a water spraying hole, a water outlet hole, a one-way drainage chamber and a plastic shell). According to the invention, the device can be connected into a detonating network, placed at a key position where
smoke dust may be generated, and detonated together with the detonating network, so that the purposes of synchronous dust falling and fixed-point dust falling are achieved while the
smoke dust is generated; and water in the
water storage bag is sprayed out through the expansion effect of the internal elastic gas storage bag, so that the dust falling effect can be effectively improved, and the dust falling area is increased.