The technical measures and structure,applied principles of blastproof of ventilation shaft at excavating face,specific operational method and prospective effect are described.
介绍了掘面防炮崩风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方法及达到的预期。
The technical measures and structure,applied principles of blastproof of ventilation shaft at excavating face,specific operational method and prospective effect are described.
介绍了掘面防炮崩风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方法及达到的预期。
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