Abstract
Aiming at roadway mining’s dynamic phases, corresponding mechanical models are established. After acquiring its vertical displacement field, the author makes control variable analysis on the influencing factors of the roof’s vertical displacement in elastic and creep phases by Mat lab. The results show that in elastic phase, the deformation is sensitive to roof’s bending stiffness and the elasticity modulus of the waste rock, but the coal thickness affects less the vertical displacement of the roof. In creep phase, the bending stiffness of roof affects less the vertical displacement of the roof, however the coal thickness affects the displacement more.
| Original language | English |
|---|---|
| Pages (from-to) | 6-13 |
| Journal | Chinese Journal of Underground Space and Engineering |
| Volume | v. 6 |
| Publication status | Published - Feb 2010 |
| Externally published | Yes |
Keywords
- Control Variate Analysis
- Winkler Groundwork
- Creep
- Roadway Mining
- Covering Rock Deformation