Supporting Technology of Expansive Soft Rock in Liuyuanzi Coal Mine
To solve the difficult problem of soft rock tunnel support in Liuyuanzi Coal Mine and reduce the times of tunnel repairs, the rock strength of roof and two sides of the tunnel was tested by in-situ testing method. The content of clay minerals and expansive clay minerals in floor rocks were measured...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Safety in Coal Mines
2020-06-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/id/6864 |