Occurrence Mechanism of Roof-Fall Accidents in Large-Section Coal Seam Roadways and Related Support Design for Bayangaole Coal Mine, China

<div>Detection results of different drilling holes on roof and two sides of monitoring section 2. (a) Observation in drilling hole 5, (b) observation in drilling hole 6, and (c) observation in drilling hole 7.</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Occurrence Mechanism of Roof-Fall Accidents in Large-Section Coal Seam Roadways and Related Support Design for Bayangaole Coal Mine, China 