Practice of accurate control technology for multi-branch horizontal grouting well trajectory of coal seam floor limestone reinforcement in Zhaogu No.1 Mine
This paper takes the multi-branch horizontal grouting well reinforced with limestone on the corresponding floor L8 in the 15011 coal seam working face of Zhaogu No.1 Mine as the research object. Pilot hole in treated limestone layer is designed and drilled to obtain the buried depth, gamma value, RO...
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| 主要な著者: | , , , |
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| フォーマット: | Artigo |
| 言語: | Chinês |
| 出版事項: |
Editorial Office of Safety in Coal Mines
2021-11-01
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| シリーズ: | Meikuang Anquan |
| 主題: | |
| オンライン･アクセス: | https://www.mkaqzz.com/cn/article/id/7706 |
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