Fig. 2

(a,b) Plan view illustrating the effects of varying maximum horizontal stress orientation on roof failure in a square pillar layout and (c,d) the impact of pillar offset on potential failure in a rectangular pillar layout9.
(a,b) Plan view illustrating the effects of varying maximum horizontal stress orientation on roof failure in a square pillar layout and (c,d) the impact of pillar offset on potential failure in a rectangular pillar layout9.