Investigation on the Fracturing Permeability Characteristics of Cracked Specimens and the Formation Mechanism of Inrush Channel from Floor

Table 1

The schemes of numerical simulations.

	Type	Item	Value
Scheme A	Uniaxial compression	Inclined angle of crack (β)	30°, 45°, 60°
		Pore water pressure (P)	0.8 MPa
Scheme B	Confining compression	Inclined angle of crack (β)	45°
		Pore water pressure (P)	0.8 MPa, 1.2 MPa, 1.5 MPa
		Confining pressure (σy)	2 MPa, 5 MPa
Scheme C	Confining tension	Inclined angle of crack (β)	45°
		Pore water pressure (P)	0.8 MPa, 1.2 MPa, 1.5 MPa
		Confining pressure (σy)	-2 MPa, -5 MPa