The technical measures and structure,applied principles of blastproof of ventilation shaft at excavating face,specific operational method and prospective effect are described.
介绍了掘进工作面防炮崩筒的主要技术措施及技术结构、应用理、采用这项技术的具体操作方法及达到的预期效果。
The technical measures and structure,applied principles of blastproof of ventilation shaft at excavating face,specific operational method and prospective effect are described.
介绍了掘进工作面防炮崩筒的主要技术措施及技术结构、应用理、采用这项技术的具体操作方法及达到的预期效果。
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