Study on Pressure Relief Technology of High-Pressure Water Jet of Residual Coal Pillar in Overlying Goaf in Close Seam Mining

Figure 16

Vertical stress contour map around the slot with different spacings in Section 2. (a) 3.0 m. (b) 4.0 m. (c) 5.0 m.

(a)

(b)

(c)