Calculates the Barton-Choubey criterion for the given data and for the given level of stress (unit weight and depth).
Barton_Choubey(JRC, JCS, phi.r, unit.weight, depth)
| JRC | The Joint Roughness Coefficient (1-20) |
|---|---|
| JCS | The Joint Compressive Strength in MPa |
| phi.r | The residual friction angle of the rock |
| unit.weight | The unit weight of the rock in kN/m3 |
| depth | The depth, in meters, to which calculate the parameters |
A list with 3 tibbles: data (normal stress and shear stress), stress level point, and parameters (c and phi). All stress values are in MPa
Barton, N. & Choubey, V. (1977). The shear strength of rock joints in theory and practice. Rock Mechanichs, 10: 1-54.
JRC = 10 JCS = 30 phi.r = 26 unit.weight = 18.6 depth = 40 Barton_Choubey(JRC, JCS, phi.r, unit.weight, depth)#> $dat #> # A tibble: 223 × 2 #> sig_n tau #> <dbl> <dbl> #> 1 0.01 0.018 #> 2 0.02 0.032 #> 3 0.03 0.044 #> 4 0.04 0.057 #> 5 0.05 0.068 #> 6 0.06 0.08 #> 7 0.07 0.091 #> 8 0.08 0.101 #> 9 0.09 0.112 #> 10 0.1 0.122 #> # … with 213 more rows #> #> $stress.level #> # A tibble: 1 × 2 #> x y #> <dbl> <dbl> #> 1 0.744 0.671 #> #> $parameters #> # A tibble: 1 × 2 #> c phi #> <dbl> <dbl> #> 1 0.102 37.4 #>