Study on Surrounding Rock Structure Evolution Characteristics and Roof Control Techniques of the Retained Roadway Formed by Roof Cutting in Inclined Coal Seams

<div>Zoning of the roadway retained through pressure relief by roof cutting and evolution process of surrounding rock structures: (a) advanced zone; (b) dynamic pressure zone; (c) stable zone. (In the figure, <i>F</i><sub>1</sub> refers to the support force (kN) of the caved gangues in the goaf on the main roof, and <i>F</i><sub>2</sub> denotes the pressure (kN) on the immediate roof by caved gangues in the goaf.)</div>

Shock and Vibration

fig4

Figure 4

Figure 4: Study on Surrounding Rock Structure Evolution Characteristics and Roof Control Techniques of the Retained Roadway Formed by Roof Cutting in Inclined Coal Seams 

Figure 4 | Study on Surrounding Rock Structure Evolution Characteristics and Roof Control Techniques of the Retained Roadway Formed by Roof Cutting in Inclined Coal Seams 