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风筒主要技术措施及技术结构、应原理、项技术具体作方法及达到效果。
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风筒主要技术措施及技术结构、应原理、项技术具体作方法及达到效果。
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