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  • SME-ICGCM
    The Extraction of Main Heading Pillars with a Longwall at Nre Wongawilli Colliery

    By Ry Stone

    To maintain longwall continuity, NRE Wongawilli Colliery extracted the approximately 20-year-old Thompson Mains and in doing so, 20 roadways were holed into during longwall retreat. The orientation of

    Jan 1, 2012

  • SME-ICGCM
    Electrical Measurements of Coal Measure Rocks for Electromagnetic Applications in Mining Industry

    By Nikolay Boykov

    Subsurface imaging technologies are part of the electromagnetic (EM) geophysical methods. EM technologies such as radio imaging method (RIM), ground penetrating radar (GPR), and drill string radar (DS

    Jan 1, 2006

  • SME-ICGCM
    The Fault At The End Of The Tunnel

    By S. S. Rowland

    Good afternoon, ladies and gentlemen. It is a pleasure, for several reasons, to be here at this 13th International Conference on Ground Control in Mining. Of course it's always a pleasure to be a

    Jan 1, 1994

  • SME-ICGCM
    Roadway Strata Management in the New South Wales Underground Coal Mining Industry

    By Rob Thomas

    Strata management is a critical and now necessary requirement in the New South Wales underground coal mining industry. As a formal and structured process, strata management allows ground supp

    Jan 1, 2007

  • SME-ICGCM
    Three-Seam Interaction: A Case Study

    By N. P. Kripakov

    Results of a complex three-seam interaction analysis in a western U.S. coal mine are presented. The physical situation simulated by the models represents the development of a set of entries underneath

    Jan 1, 1996

  • SME-ICGCM
    Think Like a Roof Bolt ? Then Make It Scream ?

    By Greg Smith

    This paper documents the use of bench testing equipment developed to enhance the understanding of, and improve upon, common roof bolt support systems. Most roof bolt systems consist of components that

    Jan 1, 2012

  • SME-ICGCM
    Improved Source Location And Evaluation Of Seismic Events Over A Deep Coal Mine

    By D. S. Choi

    This paper describes an improved source location technique for microseismic events related to coal mining. A system of non- linear distance equations is solved with the use of the Newton-Raphson metho

    Jan 1, 1990

  • SME-ICGCM
    Optimizing Pillar Design In A Multi-Seam Environment

    By R. Kanniganti

    The primary problems of pillar design in seams subject to interaction are due not only to difficulties in predicting loading, but also to the often unsymmetrical nature of the stress fields. The effec

    Jan 1, 1995

  • SME-ICGCM
    Beyond Coalbrook: Critical Review of Coal Strata Control Developments in South Africa

    By J. Nielen van der Merwe

    Rock engineering research and technology development in South Africa only received serious attention in reaction to the Coalbrook disaster in 1960. At the time, a number of gaps in knowledge of rock r

    Jan 1, 2006

  • SME-ICGCM
    Coal Mine Ground Control in Western Europe; Past, Present and Future

    By D. N. Bigby

    This paper concentrates on ground control innovation in Europe since the first Morgantown conference, mainly from a UK perspective. In particular, it describes the rock engineering and ground control

    Jan 1, 2006

  • SME-ICGCM
    Subsidence and Uplift Prediction in German and Polish Hard Coal Mining

    By Axel Preusse

    For the last 150 years, subsidence damage to the surface has been an unavoidable phenomenon associated with underground coal mining. In particular, the mechanization of mining methods in multiple seam

    Jan 1, 2012

  • SME-ICGCM
    Computer Modeling Of Rock Mass Geomechanic State In Longwall Design

    By V. D. Jalevsky

    A new methodology of an experimental-analytical approach has been developed. It is used in building an information geomechanic monitoring system for the modeling of geomechanic processes during coal s

    Jan 1, 1996

  • SME-ICGCM
    Control of Hard-to-Collapse Massive Roofs in Longwall Faces Using a Hydraulic Fracturing Technique

    By Hideki Shimando

    Periodic weighting and windblast which are caused by the dynamic effects of overburden in a longwall panel significantly affect longwall mining This study describes past experience with wind blast

    Jan 1, 1998

  • SME-ICGCM
    Three-dimensional FEM analysis to sale field measurements from deep mine accessways

    By M. J. Beus

    A shaft is truly the "lifelinen of an underground mine. Damage to the shaft lining and guides as a result of ground movement can result in serious loss of production and extensive and continual repair

    Jan 1, 1989

  • SME-ICGCM
    Using Major Hazard Risk Assessment to Appraise and Manage Escapeway Instability Issues: A Case Study (d1d3dd49-2f0a-44af-8ddf-69de3f441c2d)

    By Anthony Iannacchione

    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, outbur

    Jan 1, 2007

  • SME-ICGCM
    System behavior analysis of the ground movement around a longwall

    By Jian Wu

    In this paper, the surrounding rocks and the supports in a longwall are taken as an integral, i.e. a system. The structural characteristics and behavior of the system are discussed based on in-situ ob

    Jan 1, 1989

  • SME-ICGCM
    Pillar Reinforcement or Rib Support?

    By André C. Zingano

    The coal pillars in room-and-pillar mining method are subjected to vertical stress due to overburden rock mass and horizontal stress relieve due to entries excavation around them. Some coal mining com

    Jan 1, 2006

  • SME-ICGCM
    Ropes mine crown pillar rock mechanics

    By W. G. Pariseau

    A crown pillar cave occurred at the Ropes Mine in December, 1987, that resulted in closure of the mine. Production was resumed soon afterwards with the formulation of a rock mechanics plan designed to

    Jan 1, 1989

  • SME-ICGCM
    Influence Of Cutting Sequence On Development Of Cutters And Roof Falls In Underground Coal Mine (e70fc8d5-b1f5-424b-b360-729cb6e50081)

    By Anil K. Ray

    Roof falls are one of the greatest hazards in underground coal mines worldwide. Due to stringent safety measures and extensive support system development, roof falls have been reduced significantly bu

    Jan 1, 2009

  • SME-ICGCM
    Stress Variation on Longwall Powered Supports in Upper Seam due to the Presence of Old Mined Out Workings in Lower Seam

    By Vedala Sastry

    Longwall mining for coal extraction in deeper deposits is gaining momentum in India, due to the increasing stripping ratios and depletion of shallow deposits amenable for surface mining. In longwall

    Jan 1, 2007