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

<div>Comparison of surface fractures. (a) Surface fractures in the conventional coal mining process. (b) Surface cracks in the roadway retained by roof cutting and pressure relief.</div>

Geofluids

fig11

Figure 11

Figure 11: Stability Control of a Roadway Surrounding Rock during the Cutting and Pressure Relief of a Coal-Bearing Roof at a Shallow Mining Depth 