Hoek_Brown | R Documentation |
Calculates the Hoek-Brown criterion for the given data and for the given level of stress (unit weight and depth).
Hoek_Brown( sig.ci, GSI, mi, MR, D, height, unit.weight, use = c("general", "tunnels", "slopes") )
sig.ci |
The unconfined compressive strength of the intact rock, in MPa |
GSI |
The Geological Strength Index |
mi |
The intact rock constant |
MR |
the modulus ratio |
D |
The quality of the explosive campaing design |
height |
The height or depth for which to determine the stress level and parameters |
unit.weight |
The unit weight of the rock, in kN/m3 |
use |
The use expected for the rock mass (general, tunnels, or slopes) |
Tables for some of the input parameters can be found in the directory where the package is installed, just run the following command to find this path: system.file(package = "GMisc")
A list with a list of the resulting parameters of the rock mass and 3 data frames: Shear envelopes for Mohr-Coulomb and Hoek-Brown criteria, Principal stresses envelopes for Mohr-Coulomb and Hoek-Brown criteria, and stress level for the given height and unit weight
Hoek, E. & Brown, E. T. (1980). Empirical strength criterion for rock masses. J. Geotech. Eng. Div. ASCE 106 (GT9): 1013-1035.
Hoek, E., Carranza-Torres, C. & Corkum, B. (2002). Hoek-Brown Failure Criterion - 2002 Edition. Proc. NARMS-TAC Conference, Toronto. 267-273.
Hoek, E. & Marinos, P. (2007). A brief history of the development of the Hoek-Brown criterion. Soils and Rocks, No. 2.
sig.ci = 16 GSI = 75 mi = 13 MR = 300 D = 0 height = 40 unit.weight = 18.6 Hoek_Brown(sig.ci, GSI, mi, MR, D, height, unit.weight)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.