Mechanism of upward mixed crack propagation in long wall working face
In order to reveal the development mechanism of upward fracture in longwall face mining, based on mixed mode fracture extension theory in fracture mechanics, fracture mechanics is applied to analyze the stress state of strata on the top of the upward fracture, the criterion of upward fracture exten...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Safety in Coal Mines
2021-12-01
|
| Series: | Meikuang Anquan |
| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/7762 |