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Advances in Civil Engineering
/
2023
/
Article
/
Tab 1
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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.
R
0
(m)
σ
0
(MPa)
E
(MPa)
μ
σ
c
(MPa)
c
p
(MPa)
c
r
(MPa)
φ
p
(°)
φ
r
(°)
7
12
3837
0.25
23
0.744
0.397
24.81
15.67