Study on the Safety Thickness of Three Zones against Fault Water Inrush: Case Study and Model Development

Table 3

Calculation parameters of three-zone theory.

Partition	c(MPa)	ϕ(°)	(MPa)	(MPa)	a(m)	(MPa)	(MPa)	(MPa  m^1/2)	β(°)
	0.18	30	1.18	0.8	1.8	—	—	—	—
	—	—	—	—	—	24.8	10.4	Experiment determination	30
	—	—	—	—	—	—	—	—	—