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米煤爆破国外大都采用滚筒采煤机、刨煤机等机械进行采煤。但煤层的倾斜度大于25° 时，宜采用爆破方法采煤。煤层中甲烷的含量较多时，必须采用确能防止瓦斯和煤尘爆炸的爆破材料和爆破方式。禁止采用导火索起爆法
expl. coal blasting; shot coal; blast down
米 煤 爆破
: 2 phrases in 1 subject
Explosives and Explosive Ordnance Disposal2

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