Hoek_Brown: Hoek-Brown criterion

View source: R/Hoek_Brown.R

Hoek_BrownR Documentation

Hoek-Brown criterion

Description

Calculates the Hoek-Brown criterion for the given data and for the given level of stress (unit weight and depth).

Usage

Hoek_Brown(
  sig.ci,
  GSI,
  mi,
  MR,
  D,
  height,
  unit.weight,
  use = c("general", "tunnels", "slopes")
)

Arguments

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)

Details

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")

Value

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

References

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.

Examples

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)


maxgav13/GMisc documentation built on June 12, 2022, 3:48 a.m.