An Index for Estimating the Stability of the Layered Rock Masses under Excavation Disturbance

Table 2

Parameters of fully grouted bolt and anchored pile.

Parameters	Values
	Fully grouted bolt	Anchored pile
Cross-sectional area of cable (m^2)	6.16E−4	5.54E−3
Elastic modulus of cable (GPa)	210	210
Grout exposed perimeter (m)	0.06	0.116
Grout stiffness per unit length (N/m/m)	1.0E + 7	1.0E + 7
Grout cohesive strength (N/m)	1.0E + 6	2.0E + 6
Grout friction angle (°)	30.0	30.0
Tensile yield strength of cable (N)	2.22E + 5	2.0E + 6