Analysis of Stress Asymmetric Distribution Law of Surrounding Rock of Roadway in Inclined Coal Seam: A Case Study of Shitanjing No. 2 Coal Seam

Figure 5

Vertical stress nephogram of the roadway. (a) 18°. (b) 21°. (c) 24°. (d) 27°.

(a)

(b)

(c)

(d)