Research Article
The Study on Large-Diameter Drilling Prevention Method of Rock Burst in the Xinxing Coal
Figure 13
The distribution of the plastic zone of drilling holes along the direction of the working face.
(a) 4 m cross section in front of the work front (close to the upper lane) |
(b) 6 m section in front of the working face (close to the upper lane) |
(c) 8 m section in front of the work front (close to the upper lane) |
(d) 10 m cross section in front of the working face (close to the upper lane) |
(e) 4 m cross section in front of the work front (close to the lower lane) |
(f) 6 m cross section in front of the working face (close to the lower lane) |
(g) 8 m section in front of the working face (close to the down lane) |
(h) 10 m cross section in front of the working face (close to the down lane) |