Reasonable coal pillar size of gob-side entry driving under residual coal pillar in short distance and extra-thick coal seam
Selecting reasonable coal pillar size is the premise of success and safety of gob side entry driving. Taking 30503 working face of a coal mine as the background, the reasonable size of narrow coal pillar in gob driving roadway under the condition of overlying residual coal pillar and adjacent goaf...
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| Format: | Artigo |
| Sprache: | Chinês |
| Veröffentlicht: |
Editorial Office of Safety in Coal Mines
2022-02-01
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| Schriftenreihe: | Meikuang Anquan |
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| Online-Zugang: | https://www.mkaqzz.com/cn/article/id/7848 |
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