祁南矿顺层钻孔抽采半径测定
China Coal（2020）
Abstract
通过对淮北矿区突出矿井祁南矿顺层抽采半径的现场测定,对已有测定方法的缺陷进行了改进,优化了钻孔设计,并对测定结果进行了分析.7#煤层现场测定结果为:在t=46 d时,确定抽采半径为3.3 mMore
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