Full Dip Drill and Drilling Technology in Bottom Suction Roadway
To improve the construction efficiency of bottom suction roadway through layer hole, the ZDY3600LQ type crawler drill was developed, meanwhile, the hard rock drilling tool assembly with hydraulic DTH hammer and PDC bit was developed. Test results showed that the drilling rig could meet the requirem...
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| Format: | Artigo |
| Sprache: | Chinês |
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Editorial Office of Safety in Coal Mines
2020-05-01
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| Schriftenreihe: | Meikuang Anquan |
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| Online-Zugang: | https://www.mkaqzz.com/cn/article/id/6813 |
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