Welcome to CDC stacks |
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
Updated analysis of longwall pillar stability (ALPS) computer program incorporates new coal mine roof rating (CMRR)
Filetype[PDF-89.77 KB]


Details:
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
  1. Using the Coal Mine Roof Rating (CMRR) to Assess Roof Stability in U.S. Coal Mines
    Personal Author:
    Molinda, Gregory M.; Mark, Christopher, Dr.; Debasis, D., Dr.;
    Published Date:
    0/1/1900
    Description:
    The stability of any underground opening is, in large part, a function of the strength of the rock mass which surrounds it. The Coal Mine Roof Rating (CMRR) has been developed to quantify the defects in the rock mass and compile a strength value whic...
    File Type:
    Filetype[PDF - 1.18 MB]
  2. New Developments With The Coal Mine Roof Rating
    Personal Author:
    Mark, Christopher; Molinda, Gregory M.; Barton, Timothy M.;
    Published Date:
    0/1/1900
    Description:
    The Coal Mine Roof Rating (CMRR) was first presented at this Conference nine years ago. Since its introduction, the CMRR has been incorporated into many aspects of mine planning, including longwall pillar design, roof support selection, feasibility s...
    File Type:
    Filetype[PDF - 150.12 KB]
  3. Analysis Of Longwall Tailgate Serviceability (Alts): A Chain Pillar Design Methodology For Australian Conditions; Proceedings Of The Second International Workshop On Coal Pillar Mechanics And Design
    Personal Author:
    Colwell, Mark; Frith, Russell, PH.D.;
    Published Date:
    5/1/1999
    Description:
    This paper summarizes the results of a research project whose goal was to provide the Australian coal industry with a chain pillar design methodology readily usable by colliery staff. The project was primarily funded by the Australian Coal Associatio...
    File Type:
    Filetype[PDF - 286.06 KB]
  4. Empirical Methods For Coal Pillar Design; Proceedings Of The Second International Workshop On Coal Pillar Mechanics And Design
    Published Date:
    5/1/1999
    Description:
    Empirical methods involve the scientific interpretation of real-world experience. Many problems in ground control lend themselves to an empirical approach because the mines provide us with plenty of experience with full-scale rock structures. During ...
    File Type:
    Filetype[PDF - 160.21 KB]
  5. Development And Application Of The Coal Mine Roof Rating (CMRR)
    Personal Author:
    Mark, Christopher; Molinda, Gregory M.;
    Corporate Authors:
    Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)
    Conference Authors:
    International Workshop on Rock Mass Classification in Underground Mining (2007 : Vancouver, BC))
    Published Date:
    5/1/2007
    Source:
    Proceedings of the International Workshop on Rock Mass Classification in Underground Mining. Mark C; Pakalnis R; Tuchman RJ, eds., Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2007 May; :95-109.
    Description:
    The Coal Mine Roof Rating (CMRR) was developed 10 years ago to fill the gap between geologic characterization and engineering design. It combines many years of geologic studies in underground coal mines with world-wide experience with rock mass class...
    File Type:
    Filetype[PDF - 419.21 KB]