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  • 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
    Dynamic Failure in Coal Seams: Implications of Coal Composition for Bump Susceptibility

    By Arthur Miller, Andrew Weakley, Heather E. Lawson

    "IntroductionDynamic failure events in an underground coal mine, or “bumps,” are defined as “the sudden, violent bursts of coal from a pillar or pillars or a block of coal, resulting in a section, the

    Jan 1, 2015

  • SME-ICGCM
    Management of Floor Heave at Bulga Underground Operations—A Case Study

    By Kudret Tutuk, Serkan Saydam, Sungsoon Mo

    "This paper presents an overview of the floor heave management at the Glencore Bulga Underground Operations and investigates the contributing factors to the behaviour of the floor. The mine experience

    Jan 1, 2018

  • SME-ICGCM
    Application of Stress, Geologic, and Support Design System (Sgssm) to Ground Control for Mine Slope Entries

    By John Stankus

    Accurate evaluation of stress and geological conditions is critical to ground control design in underground openings. For a mine slope entry, the problem becomes more complicated because a slope trans

    Jan 1, 2011

  • SME-ICGCM
    Why Dead Load Suspension Design for Roadway Roof Support Is Fundamentally Flawed Within a Pro?Active Strata Management System

    By Russell C. Frith

    Risk-based roadway roof support design is now a critical part of the Australian Coal Industry. Safe and efficient mining demands that roof support be tailored to the prevailing geotechnical conditions

    Jan 1, 2011

  • SME-ICGCM
    How to Design an Efficient Roof Bolting Plan Based on Simple In-Mine Measurements

    By C. J. H. Brest van Kempen

    The techniques developed should provide a useful tool, not only during the initial formulation of a suitable bolting plan for a new section, but also for periodic check¬ing on the utilization factor

    Jan 1, 1986

  • SME-ICGCM
    Progress In The Development Of A Roof Bolt Design Methodology Based On Resisting Shear

    By Ross Seedsman

    There are many models for how roof bolts behave, one of which is prevention of shear along bedding. The basis of this model is that a roof beam will not delaminate if bedding parallel shear can be pre

    Jan 1, 2000

  • SME-ICGCM
    A Novel and Effective Method to Develop Tension in a Roof Bolt

    By Phillip E. Gramlich

    Through extensive practical experience and multiple studies, tensioned roof control systems have proven beneficial in difficult mining conditions. Due to increased mining of less desirable seams, ten

    Jan 1, 2014

  • SME-ICGCM
    A Study On Application Of Comprehensive Rock Mechanical Properties And Geological Characteristics In Coal Mines

    By Xu Linsheng

    Datong coal Mine suffers from delays and sudden caving of its massive competent conglomerate roof. Detailed geological studies of the nature of pebbles and matrix of the conglomerate and its sparse be

    Jan 1, 1992

  • SME-ICGCM
    Axial Performance of a Modified Fully Grouted Cable Bolt Tested with a New Laboratory Short Encapsulation Pull Test

    By Paul C. Hagan, Jianhang Chen, Serkan Saydam

    "Modified cable bolts are commonly used in underground mines due to their superior performance in preventing bed separation when compared with plain strands. To better test the axial performance of a

    Jan 1, 2015

  • SME-ICGCM
    Think Like a Rock

    By Tom Barczak

    Early in my career, while giving a presentation on shield design for longwall mining at one of the International Conferences on Ground Control in Mining, the late Jim Scott told me that I was finally

    Jan 1, 2011

  • SME-ICGCM
    Controlling Subsidence Effects Using Partial Backfilling

    By Yingzin Zhou

    Partial backfilling can be used to reduce and control surface subsidence damage caused by longwall mining or pillaring operations in room-and-pillar mines. The use of partial backfill as opposed to to

    Jan 1, 1990

  • SME-ICGCM
    Determination And IT-Supported Evaluation Of Rock Mechanical Parameters And Their Utilization During Application Of Roof Bolting Techniques

    By Nikolaos Polysos

    For the planning and driving of gateroads supported by roof bolts a practical concept has been developed in order to determine the geological and rock mechanical parameters derived from exploration dr

    Jan 1, 2001

  • SME-ICGCM
    Mapping Hazards With Microseismic Technology To Anticipate Roof Falls - A Case Study (ac4523c6-7bdb-4660-a1cb-20433a65c0ed)

    By Anthony Iannacchione

    As the amount of new fractured surfaces or "damaged rock layers" within roof rock increases, the stability of the rock mass decreases. While direct measurements of this phenomenon are not easily made,

    Jan 1, 2004

  • SME-ICGCM
    Recent Innovations for Slope Development

    By Tim Burgess

    Patton Mining, LLC and J.H. Fletcher Company recently collaborated and mechanized the sometimes hazardous, and always labor intensive, process of installing standing steel supports during the construc

    Jan 1, 2011

  • SME-ICGCM
    Geotechnical Considerations for Longwall Top Coal Caving at Austar Coal Mine

    By Adrian L. Moodie

    Austar Coal Mine (formerly Southlands and Ellalong Collieries) has had a long association with difficult strata control conditions associated with mining depth and a highly jointed/cleated coal seam.

    Jan 1, 2011

  • SME-ICGCM
    Three Dimensional Numerical Modelling Of Effects Of Subsidence On Escarpments

    By Leigh J. Wardle

    Significant coal reserves in New South Wales lie under areas with steep topography such as valley slopes and cliffs. Subsidence predictions are difficult to make for these locations as existing empiri

    Jan 1, 1992

  • SME-ICGCM
    Understanding the Connection between Blasting and Highwall Stability

    By R. Quentin Eades, Kyle Perry

    "Surface mines continue to implement highwalls for several reasons, such as increasing recovery, improving margins, and justifying higher stripping ratios. Highwall stability is a complex issue that i

    Jan 1, 2018

  • SME-ICGCM
    Numerical and Physical Modeling as Planning Tools for Rockbolted Roadways

    By Peter Griesenbrock

    In German underground coal mining mostly arch and some rectangular roadways are used in the development work. Due to its positive results from numerical and physical modeling techniques as well as goo

    Jan 1, 2002

  • SME-ICGCM
    Remote Mining Using Water for Ground Support

    By Robert L. Schmidt

    The support of underground openings by water is a natural phenomenon. Surface sinkholes, such as those that occur with some frequency in Florida, are attributed to a lowering of the water table result

    Jan 1, 1986