Study on the change law of temperature and mechanical properties of coal body in uncovering coal seam in low temperature freezing cross-cut
In order to study the change law of temperature and mechanical properties of coal body in uncovering coal seam in low-temperature freezing cross-cut, U-shaped copper tubes are pre-buried and frozen with liquid nitrogen during the preparation of coal samples. The characteristics of internal and surfa...
| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Industry and Mine Automation
2021-02-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2020070028 |