近几年,国内煤矿通过合并重组,淘汰了一些安全状况差、产量低的小煤矿,组建了一些大的煤炭矿业集团。为了扩大产能,这些煤炭矿业集团往往会引进一些技术先进的大型机械化装备,从而使得煤矿生产机械化程度越来越高,煤炭产量越来越大。为了保证煤矿的安 In recent years, domestic coal mines have eliminated some coal mines with poor safety conditions and low yields through mergers and reorganizations, and formed some large coal mining groups. In order to expand production capacity, these coal mining groups tend to introduce some large-scale and mechanized equipment with advanced technology. As a result, the mechanization of coal mine production is getting higher and higher, and coal production is getting larger and larger. In order to ensure the safety of coal mines