Bolt-Grout Interactions in Elastoplastic Rock Mass Using Coupled FEM-FDM Techniques

Table 2

(a) Tunnel parameters.

Radius (a)	2.00 m
Applied far field pressure (p)	8.00 MPa
Distance from tunnel wall where far field pressure applied	78.00 m

(b) Bolt and grout parameters.

Bolt radius (𝑟𝑏)	12.50 mm
Bolt length (L)	2.00 m
Bolt modulus of elasticity (𝐸𝑏)	200 GPa
Angle between two consecutive bolt	11.25^∘
Grout shear stiffness	100 GPa/m