Study on the Instability Characteristics and Bolt Support in Deep Mining Roadways Based on the Surrounding Rock Stability Index: Example of Pansan Coal Mine

<div>SRSI curve at the circumferential survey line of IRMR at different distances from the working face. (a) Surrounding rock surface. (b) Inner depth of surrounding rock 0.3 m.</div>

Advances in Civil Engineering

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Figure 7

Figure 7: Study on the Instability Characteristics and Bolt Support in Deep Mining Roadways Based on the Surrounding Rock Stability Index: Example of Pansan Coal Mine 

Figure 7 | Study on the Instability Characteristics and Bolt Support in Deep Mining Roadways Based on the Surrounding Rock Stability Index: Example of Pansan Coal Mine 