Linkage Analysis between Solid-Fluid Coupling and the Strength Reduction Method for Karst Cave Water Inrush in Mines

Table 2

The relation between safety factor F_S and thickness h of the water-proof rock pillar under different karst cave water pressures.

Karst cave water pressure (MPa)	The relation between safety factor FS and thickness of water-proof rock pillar h	The calculation safety thickness of water-proof rock pillar when safety factor FS = 1.5 (m)
1		5.18
2		5.73
3		6.89
4		7.98
5		9.32