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Mechanism and experiment of substituting high drainage roadway with directional long drilling group to extract pressure-relief gas https://journal.hep.com.cn/jocsu/EN/10.1007/s11771-012-1315-8
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Mechanism and experiment of substituting high drainage roadway with directional long drilling group to extract pressure-relief gas https://journal.hep.com.cn/jocsu/EN/10.1007/s11771-012-1315-8
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