过去十年,在欧洲、加拿大、南非和澳大利亚块状硫化矿体的地下开采中,爆破诱发硫化矿尘爆炸的事故与次数严重性大大增加。它们大多数是发生在使用大直径炮孔的台阶式爆破或VCR采矿法的回采空区中。但有相当次数却与巷道掘进和出矿口的二次破碎有关。矿尘爆炸的实质是,产生的热量大于散失的热量,悬浮于空中的粉尘很快氧 In the past decade, the severity of accidents and frequency of blast-induced sulfide dust explosions has greatly increased in underground mining of massive sulfide ore bodies in Europe, Canada, South Africa and Australia. Most of them occur in goafs using bench blasting or VCR mining with large diameter blast holes. However, there are quite a few times it is related to secondary crushing of tunneling and mine exit. The essence of the mine dust explosion is that the heat generated is greater than the heat lost, the dust floating in the air is very fast oxygen