### Abstract

Recently, the Hoek-Brown failure criterion is one of the mostly used failure criterion for rock mass. The constants of this failure criterion depend on, among the others, the Geological Strength Index (GSI) and the disturbance factor (D). The purpose of this paper is to analyze the sensitivity of the various constants of this equation, which depends on the GSI value and the D factor. The results show that the Hoek-Brown constants are very sensitive to both the GSI and the D factor, so to determine them exactly is very important for the rock engineering design. The sensitivity of the strength of the rock mass is also calculated. Thus these input parameters can be not determinable exactly, the results shows to take into account to use these relationships, mostly for risk analysis.

Original language | English |
---|---|

Title of host publication | ISRM International Symposium - EUROCK 2013 |

Editors | Lydzba, Kwasniewski |

Publisher | International Society for Rock Mechanics |

Pages | 835-840 |

Number of pages | 6 |

ISBN (Print) | 9781138000803 |

Publication status | Published - Jan 1 2013 |

Event | ISRM International Symposium - EUROCK 2013 - Wroclaw, Poland Duration: Oct 23 2013 → Oct 26 2013 |

### Other

Other | ISRM International Symposium - EUROCK 2013 |
---|---|

Country | Poland |

City | Wroclaw |

Period | 10/23/13 → 10/26/13 |

### Fingerprint

### ASJC Scopus subject areas

- Geochemistry and Petrology

### Cite this

*ISRM International Symposium - EUROCK 2013*(pp. 835-840). International Society for Rock Mechanics.

**Sensitivity analysis of the generalized Hoek-Brown failure criterion.** / Ván, P.; Vásárhelyi, B.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*ISRM International Symposium - EUROCK 2013.*International Society for Rock Mechanics, pp. 835-840, ISRM International Symposium - EUROCK 2013, Wroclaw, Poland, 10/23/13.

}

TY - GEN

T1 - Sensitivity analysis of the generalized Hoek-Brown failure criterion

AU - Ván, P.

AU - Vásárhelyi, B.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Recently, the Hoek-Brown failure criterion is one of the mostly used failure criterion for rock mass. The constants of this failure criterion depend on, among the others, the Geological Strength Index (GSI) and the disturbance factor (D). The purpose of this paper is to analyze the sensitivity of the various constants of this equation, which depends on the GSI value and the D factor. The results show that the Hoek-Brown constants are very sensitive to both the GSI and the D factor, so to determine them exactly is very important for the rock engineering design. The sensitivity of the strength of the rock mass is also calculated. Thus these input parameters can be not determinable exactly, the results shows to take into account to use these relationships, mostly for risk analysis.

AB - Recently, the Hoek-Brown failure criterion is one of the mostly used failure criterion for rock mass. The constants of this failure criterion depend on, among the others, the Geological Strength Index (GSI) and the disturbance factor (D). The purpose of this paper is to analyze the sensitivity of the various constants of this equation, which depends on the GSI value and the D factor. The results show that the Hoek-Brown constants are very sensitive to both the GSI and the D factor, so to determine them exactly is very important for the rock engineering design. The sensitivity of the strength of the rock mass is also calculated. Thus these input parameters can be not determinable exactly, the results shows to take into account to use these relationships, mostly for risk analysis.

UR - http://www.scopus.com/inward/record.url?scp=85023625343&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85023625343&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85023625343

SN - 9781138000803

SP - 835

EP - 840

BT - ISRM International Symposium - EUROCK 2013

A2 - Lydzba, null

A2 - Kwasniewski, null

PB - International Society for Rock Mechanics

ER -