Design on Waterproof Safety Coal Pillar at Outcrop Area of Thick Coal Seam Under he Large Thick Jurassic Red Stratum
To study the waterproof coal pillar design for mining in the outcrop area of thick coal seam in Shanxi Formation under the large Jurassic red stratum in the seventh mining area planned and designed by Dongtan Coal Mine, the systematic analysis is carried out on six boring-enclosed areas near the ty...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Safety in Coal Mines
2020-09-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/id/7172 |