Research Article
Study on Roof Presplitting Mechanism and Deformation Control of Reused Roadway in Compound Soft Rock by Roof Presplitting Approach
Figure 5
Horizontal tensile stress curve and stress nephogram of the presplitting zone.
(a) Presplitting interval 0 m |
(b) Presplitting interval 0.5 m |
(c) Presplitting interval 1 m |
(d) Presplitting interval 1.5 m |
(e) Presplitting interval 2 m |