Research Article
Research on the Deformation and Control Technology of Surrounding Rock in Entry Retaining along the Gob Side
Figure 19
The distribution of the surrounding rock in the roof anchorage area. (a) 0.2 m. (b) 0.8 m. (c) 1.6 m. (d) 2.2 m.
(a) |
(b) |
(c) |
(d) |