Welcome to CDC Stacks | Rock Mass Characterization For Excavations In Mining And Civil Engineering; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining - 8475 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Rock Mass Characterization For Excavations In Mining And Civil Engineering; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
  • Published Date:
    5/1/2007
Filetype[PDF - 2.02 MB]


Details:
  • Personal Authors:
    Barton, Nick, PH.D.
  • Description:
    When the Q-system was launched in 1974, the name referred to rock mass classification, with focus on tunnel and cavern support selection. Besides empirical design of support, the Q-value, or its normalized value Qc, has been found to correlate with seismic P-wave velocity, with deformation modulus, and with deformation. The Q-system provides temporary or permanent support for road, rail, and mine roadway tunnels and for caverns for various uses. It also gives relative cost and time for tunnel construction for a complete range of rock qualities. There are also indications that Q has captured important elements of the cohesive and frictional strength of rock masses, with Qc resembling the product of rock mass cohesion and rock mass friction coefficient.

  • Collection(s):
    National Institute for Occupational Safety and Health
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
  1. Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
    Published:
    5/1/2007
    Description:
    Rock mass classification is widely used throughout the underground mining industry—in both coal and hard-rock mines. It is used in all stages of the mining process, from site characterization to production operations. The goal of the International ...
    File Type:
    Filetype[PDF - 2.33 MB]
  2. Weak Rock Mass Design For Underground Mining Operations; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
    Personal Author:
    Pakalnis, Rimas; Brady, Thomas M.; Hughes, Paul; Caceres, Cristian; Ouchi, Andrea M.; MacLaughlin, Mary M., PH.D.;
    Published:
    5/1/2007
    Description:
    A major focus of ground control research presently being conducted by the Geomechanics Group at the University of British Columbia, Canada, in conjunction with the National Institute for Occupational Safety and Health’s (NIOSH) Spokane Research Lab...
    File Type:
    Filetype[PDF - 820.03 KB]
  3. The Geological Strength Index (GSI): A Characterization Tool For Assessing Engineering Properties For Rock Masses; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
    Personal Author:
    Marinos, Paul G., PH.D.; Marinos, Vassilis; Hoek, Evert, PH.D.;
    Published:
    5/1/2007
    Description:
    The Geological Strength Index (GSI) is a system of rock mass characterization that has been developed in engineering rock mechanics to meet the need for reliable input data related to rock mass properties required as input for numerical analysis or c...
    File Type:
    Filetype[PDF - 887.63 KB]
  4. Problems With Rock Classification For Empirical And Numerical Design; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
    Personal Author:
    Milne, Douglas, PH.D.
    Published:
    5/1/2007
    Description:
    Most empirical and numerical approaches to design in rock mechanics incorporate rock mass classification. Numerical design methods generally use classification values to calculate input parameters for stress-based failure criteria. Empirical methods ...
    File Type:
    Filetype[PDF - 378.31 KB]
  5. Mechanized Excavability Rating For Hard-Rock Mining; Proceedings Of The International Workshop On Rock Mass Classification In Underground Mining
    Personal Author:
    Bieniawski, Z. T.; Celada, Benjamín, PH.D.;
    Published:
    5/1/2007
    Description:
    After emphasizing the importance of quantitative rock mass classifications in mining, originally directed to selection of rock support measures, but subsequently to estimates of rock mass properties such as rock mass strength and rock mass modulus of...
    File Type:
    Filetype[PDF - 613.21 KB]