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煤矿井下由于违章爆破而导致的瓦斯爆炸事故仍时有发生。据不完全统计,在近十年煤矿发生的灾害中,由于爆破所引起的瓦斯爆炸事故,占总瓦斯爆炸事故的18.8%。目前,全国各大中煤矿的爆破工作很不规范,没有统一的规定和标准,如,爆破母线有的矿用多股铜线,还有的矿用单股铜线,也有的矿用单股铁线。而母线与雷管脚线、脚线与脚线的连接方法又各不相同,虚接、搭接、开路等连接不良现象
Gas explosion accidents in coal mines due to illegal blasting still occur from time to time. According to incomplete statistics, in the disaster of coal mines in the recent 10 years, the gas explosion caused by the blasting accounted for 18.8% of the total gas explosion accidents. At present, the country’s major coal mines blasting work is not standardized, there is no uniform rules and standards, such as blasting some of the mine bus lines with copper, as well as mine single-stranded copper, and some mining stocks Iron wire. The bus and the mine wire, foot and foot line connection methods are different, the virtual connection, lap, open the poor connection phenomenon