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Roof Instability
  • Published Date:
    Mar 2014
  • Source:
    Prof Saf. 59(3):57-62.
Filetype[PDF-1.85 MB]


Details:
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  1. Detection of roof instability by monitoring the rate of movement
    Personal Author:
    Maleki, Hamid N.; McVey, James R.;
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    United States. Bureau of Mines.
    Published Date:
    1988
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9170
    Description:
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  2. Analysis of roof and pillar failure associated with weak floor at a limestone mine
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    Int J Min Sci Technol. 26(3):471-476
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    A limestone mine in Ohio has had instability problems that have led to massive roof falls extending to the surface. This study focuses on the role that weak, moisture-sensitive floor has in the instability issues. Previous NIOSH research related to t...
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  3. Effect Of The Dip And Excavation Orientation On Roof Stability In Moderately Dipping Stone Mine Workings
    Personal Author:
    Esterhuizen, G. S.; Iannacchione, A.T.;
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    Pittsburgh Reserch Labortory (National Institute for Occupational Safety and Health)
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    U.S. Rock Mechanics Symposium (40th : 2005 June 25-29 : Anchorage, Alaska)
    Published Date:
    2005
    Source:
    Alaska Rocks 2005, Proceedings of the 40th U.S. Rock Mechanics Symposium, Anchorage, Alaska, June 25-29, 2005. Alexandria, VA: American Rock Mechanics Association, Paper No. ARMA/USRMS 05-743, 2005 Jun; :1-8
    Description:
    Underground limestone mines typically use the room-and-pillar method of mining in the generally flat-lying limestone formations. In some cases the dip may exceed 5° which can result in unique roof instability problems. Stability may be further exace...
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  4. Hillseam geology and roof instability near outcrop in eastern Kentucky drift mines
    Personal Author:
    Sames, Gary P.; Moebs, Noel N.;
    Corporate Authors:
    United States. Bureau of Mines
    Published Date:
    1989
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9267
    Description:
    "This U.S. Bureau of Mines study was conducted in eastern Kentucky drift mines as part of an ongoing research program to characterize the outcrop barrier zone. "Hillseams" were identified as the dominant geologic cause of roof instability unique to t...
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  5. Using Major Hazard Risk Assessment to Appraise and Manage Escapeway Instability Issues: A Case Study
    Personal Author:
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    Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)
    Conference Authors:
    International Conference on Ground Control in Mining (26th : 2007 July 31-August 2 : Morgantown, WV)
    Published Date:
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    Proceedings of the 26th International Conference on Ground Control in Mining, July 31 - August 2, 2007, Morgantown, West Virginia. Peng SS, Mark C, Finfinger GL, Tadolini SC, Khair AW, Heasley KA, Luo Y, eds., Morgantown, WV: West Virginia University, 2007 Jul; :354-360
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    A Major Hazard Risk Assessment (MHRA) was developed in Australia after a series of mine disasters in the 1990’s. A MHRA is used to help prevent major hazards, i.e. fire, explosion, wind-blast, outbursts, spontaneous combustion, roof instability and...
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