Research progress of gas drainage boreholes sealing materials and matching technology in underground coal mine
It was one of the hot spots that coal mine safety technicians were competing for studying the suitable sealing material and its matching technology for gas drainage and drilling with the characteristics of coal mine gas occurrence conditions fully considered. We briefly analyzed the path of air ente...
| Published in: | Meikuang Anquan |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | Chinese |
| Published: |
Editorial Office of Safety in Coal Mines
2021-08-01
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| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/7590 |