Research Article
Ground Response and Mining-Induced Stress in Longwall Panel of a Kilometer-Deep Coal Mine
Figure 2
Surrounding rock instabilities. (a) Face fall. (b) Roof fall. (c) Large deformation of the gate. (d) Rib expanding. (e) Floor dinting.
(a) |
(b) |
(c) |
(d) |
(e) |