Mechanism and Integrated Control of “Rib Spalling: Roof Collapse—Support Instability” Hazard Chains in Steeply Dipping Soft Coal Seams

Figure 9

The impacts of the main factors on the shear failure of the element. (a) The impact of the roof load on . (b) The impact of the cohesion on . (c) The impact of on . (d) The impact of on . (e) The impact of the sidewall protecting force on .

(a)

(b)

(c)

(d)

(e)