Study on reasonable width of coal pillar in retracement channel under goaf edge
In order to study the reasonably reserved width of the coal pillars in the roadway for lower and middle coal seams in shallow and short distance coal seams, the research methods of theoretical analysis, similar simulation and numerical simulation were used to study the characteristics of the overbu...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Safety in Coal Mines
2021-03-01
|
| Series: | Meikuang Anquan |
| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/7340 |