Load Surfcam Velocity Ii Crack4/23/2023 Results demonstrate that when L and d are constant, q cr decreases as H increases. The relationship between q cr and pillar height ( H), pillar width ( b), pillar length ( L), and the crack loosen zone width ( d) is quantitatively evaluated. Furthermore, the instability criterion is employed to derive an analytical method for the estimation of the critical blasting load q cr for cracked strip bauxite pillars. In the current study, we establish a structural mechanical model for cracked strip pillars and determine a mathematical formula for the total energy based on an underground bauxite mine in Shanxi, China. Cracked pillars have limited capabilities for the bearing of dynamic and static loads, consequently threatening the stability of entire goafs.
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