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  • SME-ICGCM
    Design Of Multi-Level Thick Seam Extractions Under Major Aquifers And Considering Spontaneous Combustion Risk

    By D. J. Reddish

    An understanding of the mechanisms that cause large seismic events in a deep mine provides a foundation for designing effective measures to reduce the incidence of these events, as well as reduce the

    Jan 1, 1996

  • SME-ICGCM
    Requirements and Performance of Pumpable Cribs in Longwall Tailgate Entries and Bleeders

    By Peter Zhang

    Pumpable cribs are being increasingly used in longwall tailgate entries and bleeders for roof support under abutment pressure. Their high peak capacity and confinement-controlled yield characteristics

    Jan 1, 2012

  • SME-ICGCM
    Airbag Support for Ground Control in Thin Seam Coal Mining

    By Fan Shaogang

    In this paper, the airbags' structure and technical characteristics and its applications in China are described. Based on the practice of the airbags in mining thin seams, the effects on ground c

    Jan 1, 1997

  • SME-ICGCM
    Understanding the hydraulic pressure cell

    By Keith A. Heasley

    Numerous different instruments and techniques have been developed for the purpose of measuring rock stress and stress changes around excavations. The interpretation of the output from many of these in

    Jan 1, 1989

  • SME-ICGCM
    Analysis of Small-Scale Thrust Faults and Their Effect on Coal Mining in Southern West Virginia

    By Thomas Z. Jones

    Deep mining within the Sewell Coal member of the New River Formation in southern West Virginia has exposed several small-scale thrust faults and related features. The faults were en- countered in West

    Jan 1, 1986

  • SME-ICGCM
    High Horizontal Movements In Longwall Gate Roads Controlled By Cable Support Systems

    By Dennis R. Dolinar

    Controlling coal mine roofs subjected to high-horizontal stress conditions has always been difficult and uncertain. Traditional supports such as wooden cribs and posts, concrete donut cribs, and stand

    Jan 1, 1996

  • SME-ICGCM
    A Case Study of Longwall Roof-Supports Interaction

    By Y. H. Wang

    During the last two decades many research projects were conducted to study the load requirements for the powered supported longwall faces (1-6). Significant results had been achieved by these research

    Jan 1, 1986

  • SME-ICGCM
    New Type of Load Cell for Monitoring of Roof Bolt Tension

    By K. Unkug

    It is commonly accepted that the tension of roof bolts can be used as a measure of the effectiveness of roof support performance in coal bearing strata. The conceptual base for the assumption orig

    Jan 1, 1986

  • SME-ICGCM
    Effect of Faults on the Movement of Roof Strata in Gateroads

    By Panfeng Gou

    In order to solve the problems of supporting the roof of the gateroads affected by a fault, the movement characteristics of roof strata must be fully understood. In this paper, a plane stress physical

    Jan 1, 2006

  • SME-ICGCM
    Application of Electrohydrodynamic Method and High-Pressure Water Jets as Non-Blasting Alternative of Rock Breaking and Splitting in Open Pits

    By Krzysztof Kotwica

    The steady demand for rock materials leads not only to on increase in mining but to the need for decreasing the loss of material in the process of exploitation as well. It brings about an increase in

    Jan 1, 2006

  • SME-ICGCM
    Aspect Ratio and Other Parameters That Affect the Performance of Burrell Can Roof Supports

    By David F. Gearhart

    The Burrell Can1 is a thin, steel, tubular shell filled with aerated concrete that is used as a roof support in coal mines. The Can height is always shorter than the mining entry, so it is capped with

    Jan 1, 2012

  • SME-ICGCM
    Numerical Simulation of Reinforced Concrete Mine Seal Subjected to Explosion Loading

    By Khaled Morsy

    The tragic incidents at Sago and Darby coal mines in 2006 pointed out the need for stronger seals to resist the blast effects of violent gob explosions. Mine Safety and Health Administration (MSHA) ha

    Jan 1, 2008

  • SME-ICGCM
    Failure mechanisms in ultra-close seam mining

    By Yingxin Zhou

    Virtually every coal seam in Appalachia will at some time be subject to multi-seam interaction (Wu et al, 1987). Many such problems result from seams which lie in close proximity or have split and lie

    Jan 1, 1989

  • SME-ICGCM
    Comparison of the Performance of Active and Passive Roof Bolts in An Illinois Basin Coal Mine

    By Anil K. Ray

    This paper discusses in situ studies conducted at an Illinois Basin room-and-pillar coal mine to evaluate the performances of three different types of bolts under similar geologic conditions. The bolt

    Jan 1, 2012

  • SME-ICGCM
    Destressing Practice In Rockburst-Prone Ground

    By J. Willan

    This paper addresses the problem of designing a destress blasting procedure to reduce the incidence of rockbursting in hard rock mines. A review is made of the developed theory and practice of destres

    Jan 1, 1984

  • SME-ICGCM
    Load Determination For Long Cable Bolt Support Using Computer Aided Bolt Load Estimation (CABLE) Program

    In this paper a numerical formulation is presented for determination of the axial load along a cable bolt for a prescribed distribution of rock mass displacement. Results using the program CABLE indic

    Jan 1, 1996

  • SME-ICGCM
    Practical Strata Management, Beltana No. 1 Mine, Australia

    By Shane McDonald

    Australia produces approximately 84 million tonnes of coal per annum from 30 longwalls in New South Wales and Queensland, operating at an average depth of around 300m. Industry trends and expectations

    Jan 1, 2008

  • SME-ICGCM
    Innovation in Rock Mechanics: Iced Tailings As Structural Backfill for the Citronen Mine, Ironbark Zinc Ltd., Greenland

    By Andrew P. Schissler

    The Citronen Zinc-Lead Project is one of the world?s largest undeveloped zinc-lead resources, containing more than 13 billion pounds of zinc and lead metal. The project is located in northern Greenlan

    Jan 1, 2012

  • SME-ICGCM
    Sub-Surface Cracks Due To Disc Cutter Spacing For Improved Rock Breakage And Ground Control (9409c703-a463-4470-b9b9-4f86b64581d4)

    By N. I. Aziz

    The importance of using disc cutters for rock excavation is reflected by their wide application in hard rock cutting machines such as tunnel boring machines and raise borers. The forces involved in th

    Jan 1, 1992

  • SME-ICGCM
    Improving Design Methodology For Innovative Rock Mechanics Design

    By Dwayne C. Kicker

    This paper introduces the concept of design theory and methodology as applied to rock mechanics for more innovative and efficient design. This is a "frontier" research area in rock mechanics because a

    Jan 1, 1989