松动爆破就是在工作面前方打一定深度的若干个炮眼,经过装药爆破使钻孔周围煤体破碎产生裂隙和松动,使集中应力带向前方及两侧推移达到卸压和排放瓦斯目的,孔深在8m 以上谓之深孔松动爆破。该措施已在28个矿井得到应用。该措施的工艺是根据松动爆破孔有效影响范围内在巷道断面打深8～12m、直径42 Loose blasting is to hit a certain depth in front of the work of a number of blasthole, after the blasting of coal to break the hole around the borehole cracks and loosening, so that the stress concentration to the front and sides of the push to achieve the purpose of relief and discharge of gas holes Deep in the 8m above that loose hole blasting. This measure has been applied in 28 mines. The measures of the process is based on loose blast hole effective impact range in the tunnel section depth 8 ~ 12m, diameter 42