Stability Control of a Roadway Surrounding Rock during the Cutting and Pressure Relief of a Coal-Bearing Roof at a Shallow Mining Depth

Figure 5

Load curves of support pillars in areas affected by roof cutting in the roof-unloading, retaining roadway: (a) No. 5, (b) No. 10, and (c) No. 20.

(a)

(b)

(c)