Research Article

A Simple Solution and Dilatancy Characterization for a Circular Tunnel Excavated in the Nonlinear Strain-Softening and Nonlinear Dilatancy Rock Mass

Table 1

Parameters used for analysis.

R0 (m)σ0 (MPa)E (MPa)μσc (MPa)cp (MPa)cr (MPa)φp (°)φr (°)

71238370.25230.7440.39724.8115.67