大块崩落采煤法 [矿业] block caving coal mining method
煤崩落
Coal caving
以上为机器翻译结果，长、整句建议使用 人工翻译 。
根据煤的崩落性质，研究了截槽形状与煤的块度、截煤阻力及截齿的切削效率等关系。
According to coal breakout feature, the author has studied the relationship between cutting groove shape and the lump of coal and cutting resistance as well as cutting efficiency.
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