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  • SME-ICGCM
    Evaluation Of Surface Subsidence Potential Along A Pipeline Due To Abandoned Coal Mine Works

    By Thomas L. Vandergrift

    With the inevitable expansion of homes, businesses, and infrastructure in coal mining regions, the potential for future subsidence above abandoned mines is of increasing concern. Of particular concern

    Jan 1, 2000

  • SME-ICGCM
    Considerations Of Gas Outbursts In Using Dome Salt Mines For Storage Of Oil And Nuclear Waste

    By M. Ashraf Mahtab

    A feature of interest in stability of excavations in domal salt is the phenomenon of gas outbursts which has occurred in five of the six mines in Louisiana salt domes. Gas outbursts are sudden errupti

    Jan 1, 1981

  • SME-ICGCM
    Geomechanical Criteria of Longwall Face Support Selection at Consol Mines

    By D. W. H. Su

    This paper describes geomechanical criteria employed by Consol Energy for selecting mine-specific longwall face supports in the past decade. The criteria include immediate and main roof rock character

    Jan 1, 2004

  • SME-ICGCM
    Utilizing The ?Advance And Relieve? Method To Reduce Horizontal Stress Affects On The Mine Roof, A Case Study (b5b945af-699f-46b0-ae56-a98434baad9f)

    By Dennis R. Dolinar

    A room and pillar coal operation in central Pennsylvania was experiencing roof cutters and long running roof falls caused by high horizontal stresses. The roof conditions created hazards for the miner

    Jan 1, 2000

  • SME-ICGCM
    Introducing the New Windows ARMPS-LAM Program

    By Keith Heasley, Christopher Newman, Zach Agioutantis

    "Previously, in 2013, a laboratory version of the computer code ARMPS-LAM, introduced at the 32""d International Conference of Ground Control in Mining, successfully integrated the laminated overburde

    Jan 1, 2016

  • SME-ICGCM
    An Analytical Approach to Determine Stress Distribution in Longwall Chain Pillars

    By James M. Kramer

    This paper introduces an analytical approach for the determination of the vertical stress in the chain pillar system between two adjacent longwall panels. The development of this approach is based on

    Jan 1, 1998

  • SME-ICGCM
    Identification Of Critical Slope Failure Surfaces With Critical Tension Cracks

    The formation of tension cracks in slopes is well known. Analytical studies require the determination of a critical slip surface for any slope and, in doing so, it is necessary to consider an appropri

    Jan 1, 1989

  • SME-ICGCM
    Comparison of Pillar Strengths Calculated Using Empirical Equations and Finite Elements

    By Aarao de Andrade Lima

    Mechanical properties typical of coal are used in the comparisons of pillar strengths based on finite elements and the empirical equations of Holland-Gaddy, Salamon-Munro, Obert¬Duvall, and Bieniawski

    Jan 1, 1997

  • SME-ICGCM
    Influence of joints on the elastic response of a LFUFL stope to FEM mining

    By W. G. Pariseau

    A new approach to the direct inclusion of the effects of joints and geologic structure in rock mechanics analyses is applied to an elastic analysis of stability of a Lucky Friday undercut and 4111 lon

    Jan 1, 1989

  • SME-ICGCM
    Evaluation of the Point Load Strength for Soft Rock Classification

    By B. (Mamas) Das

    A project to evaluate the suitability of point Load strength tests for testing and classifying coal measure rocks for coal mining application was initiated by Canada Centre for Mineral and Energy Tech

    Jan 1, 1984

  • SME-ICGCM
    Influence Of The Sloping Of Ground Surfaces On Mine Subsidence (165d3ebb-e4c1-4bc8-a5e4-409b4e24155c)

    By D. M. Shu

    A two-dimensional finite element modelling technique is applied to predict the subsidence movements on a sloping ground surface above a completely mined panel. The modelling is carried out for the sur

    Jan 1, 1992

  • SME-ICGCM
    New developments with the coal mine roof rating (7c278b2d-cc1e-4949-9bd2-643d1af010e5)

    By Chris Mark

    The Coal Mine Root 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 pi

    Jan 1, 2002

  • SME-ICGCM
    Changes In Seismic Measurements With Blast Induced Fracturing: A Field Experiment

    By Clifford J. Roblee

    In this paper, various seismic indicators are evaluated for ability to discern fractures induced into a rock mass by blasting. This is accomplished by presenting results from in situ crosshole seismic

    Jan 1, 1989

  • SME-ICGCM
    Prediction Of Rock Cutting Performance Using Fracture Mechanics Principles - A Review (0b1a12ed-9606-4d46-b68d-eea006d52e76)

    By Gexin Sun

    This paper overviews the recent research progress in predicting cutting performance using fracture mechanics principles. It is emphasised that rock fragmentation due to cutting is mainly a process of

    Jan 1, 1992

  • SME-ICGCM
    Load And Deflection Response Of Ventilation Stoppings To Longwall Abutment Loading - A Case Study (49571726-6a2d-49b8-8ef0-957c4421195c)

    By David C. Oyler

    Few studies have specifically measured and documented the large-scale loading behavior and durability of ventilation stoppings to mining induced movements, particularly from longwalls. Ventilation sto

    Jan 1, 2001

  • SME-ICGCM
    Multiple-Seam Mining - A State-Of-The-Art Review

    By Chris Haycocks

    The relevant literature concerning ground control, mine planning and reserve conservation in multi- seam mining is reviewed. Factors affecting interaction, interaction mechanisms, and design guideline

    Jan 1, 1990

  • SME-ICGCM
    Longwall Production, Maintenance, And Roof Control System

    By W. Mark Hart

    The current Automatic Data Acquisition system developed by some support manufacturers make it possible to monitor and record changes in leg pressure, DA RAM stroke in every shield and shearer position

    Jan 1, 1994

  • SME-ICGCM
    Strata Control Advances At Jim Walter Resources, Mining Division

    By Eddie Martin

    Jim Walter Resources, Mining Division, employs the retreat longwall mining system as the primary method of coal production. The strata control aspects of developing and maintaining roadways for retrea

    Jan 1, 1988

  • SME-ICGCM
    Mine Planning For Longwall And Pillar Retreat Panels Subject To Seam Interaction Effects

    By Thomas L. Vandergrift

    Multiple-scam mining is becoming more common in the United States, especially in the East, where primary reserves arc being depleted, forcing mining companies to develop secondary seams, Although mine

    Jan 1, 2000

  • SME-ICGCM
    Study of Ground Movement Over a Longwall Mine

    By A. W. Khair

    This paper presents an analysis of ground movements recorded from longwall operations in the Northern Appalachian region in West Virginia. The site chosen for the investigation was selected due to var

    Jan 1, 1987