Research Article
A New Method to Estimate the Joint Roughness Coefficient by Back Calculation of Shear Strength
Table 9
JRCRL and JRCRL values of 9 target joints.
| Joint number | JRCLR | JRCRL | Mean of JRCRL | Mean of JRCRL | JRC in literature | Normal stress | Normal stress | 5 MPa | 6 MPa | 7 MPa | 8 MPa | 5 MPa | 6 MPa | 7 MPa | 8 MPa |
| 1 | 11.13 | 11.25 | 11.84 | 10.63 | 16.42 | 16.39 | 16.37 | 14.68 | 11.21 | 15.96 | 14–16 | 2 | 19.67 | 20.59 | 19.42 | 17.27 | 13.83 | 14.05 | 14.01 | 12.09 | 19.24 | 13.49 | 18–20 | 3 | 30.25 | 29.56 | 30.75 | 25.63 | 18.27 | 16.77 | 15.96 | 13.24 | 29.04 | 16.06 | 14–16 | 4 | 9.38 | 9.14 | 9.47 | 8.59 | 5.13 | 5.83 | 5.17 | 4.92 | 9.15 | 5.26 | 10–12 | 5 | 17.94 | 18.13 | 19.14 | 17.04 | 13.89 | 14.20 | 14.68 | 13.02 | 18.06 | 13.95 | 6–8 | 6 | 9.27 | 9.50 | 9.27 | 8.04 | 1.26 | 0.95 | 1.04 | 1.51 | 9.02 | 1.19 | 10–12 | 7 | 0.81 | 0.77 | 0.73 | 0.59 | 0.56 | 0.56 | 0.66 | 0.72 | 0.72 | 0.62 | 4–6 | 8 | 1.04 | 1.07 | 1.20 | 1.42 | 0.38 | 0.49 | 0.59 | 0.52 | 1.18 | 0.49 | 2–4 | 9 | 0.47 | 0.56 | 0.66 | 0.44 | 0.19 | 0.25 | 0.35 | 0.27 | 0.53 | 0.27 | 2–4 |
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