Numerical Investigation of the Influence of Roof Fracturing Angle on the Stability of Gob-Side Entry Subjected to Dynamic Loading

Table 2

Relevant parameters of the cable structural element.

Type	E (GPa)	A (m^2)	ρg (m)	Ft (N)	Cg (N/m)	Kg (N/m^2)
Bolt	200e9	3.8e−4	0.094	2.6e5	4.7e5	5.6e9
Cable	200e9	2.5e−4	0.089	7.0e5	4.7e5	4.3e9

E = Young’s modulus; A = cross-sectional area; ρ_g = grout circumference; F_t = tensile yield strength; C_g = grout cohesive strength per unit length; K_g = grout stiffness per unit length.