Thick-Anchored Dual-Layer Locking Supporting Technique in Gob-Side Entry Driving with the Narrow Pillar: A Case Study

Figure 4

Schematic diagram of the shear force carried by the anchor when the rock beam bends. (a) With anchor. (b) Shear stress at any point on the cross-section at a distance from the neutral axis during rock bending.

(a)

(b)