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Paper Information

Title: 

INVESTIGATION OF GEOMECHANICAL PARAMETERS OF ROCK MASSES AROUND THE DAROONGAR DIVERSION TUNNEL

Type: PAPER
Author(s): GHAFOURI M.,SADEGHI H.,LASHKARIPOUR GH.,TARIGH AZALI S.
 
 
 
Name of Seminar: PROCEEDING OF IRANIAN MINING ENGINEERING CONFERENCE
Type of Seminar:  CONFERENCE
Sponsor:  IRANIAN SOCIETY OF MINING ENGINEERING
Date:  2005Volume 1
 
 
Abstract: 

This paper presents the investigation of geomechanical parameters of rock masses around the Daroongar diversion tunnel. The preliminary support design of this tunnel was analyzed by empirical and numerical methods. The rock mass rating (RMR), geological strength index (GSI) and rock mass quality (Q) systems were used at different sections of the tunnel route for estimation of quality of rock masses properties. Also distinct element method (UDEC program) was used for stability analysis of the tunnel. Samples obtained from drilling were tested in the laboratory, including uniaxial compression strength (UCS), deformation parameters, unit weight and porosity. In order to estimate strength parameters of rock mass (compressive strength, tensile strength, deformation modulus and Hoek-Brown constants) Hoek-Brown failure criterion was used. According these results the sections C and B of the tunnel route have lowest and highest values of the rock mass strength parameters, respectively.

 
Keyword(s): GEOMECHANICAL PARAMETERS, DIVERSION TUNNEL, DISTINCT ELEMENT, UDEC
 
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