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随着煤矿综合机械化程度的大幅度提高及超强度开采,原煤田中开采条件较好的煤层逐渐枯竭,薄煤层的综采成为一个研究的重要课题。
With the drastic increase of mechanization of coal mines and their super-intensity mining, the coal seam with better exploitation conditions in the original coalfields is gradually depleted, and the fully-mechanized mining of thin coal seams has become an important subject of study.