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介绍了刘桥二矿 62 3对拉炮采工作面 ,在初次放顶结束后 ,由于受到煤层中的细砂岩夹矸影响 ,改由跟顶开采下降到托夹矸跟底开采的做法及取得的效果 ,为类似煤层情况的开采提供借鉴。
Introduced 623 pairs of Liuqiao second blasting artillery mining face, after the initial top-capping, due to the fine sandstone in the coal seams affect the change by the top mining down to the care of the gangue mining with the end of mining practices and made The results provide a reference for the exploitation of similar coal seams.