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  • SME-ICGCM
    Long Term Stability Of Mine Workings In Soft Floor Environment: Geomechanical Investigations At Cooranbong Colliery

    By Vasundhara

    Underground coal mining in soft floor environments has often led to strata control problems ranging from small scale issues such as floor heave which disrupts traffic and ventilation, rib spalling and

    Jan 1, 2001

  • SME-ICGCM
    Numerical Modeling of the Pillar Confinement with Backfilling Material in Room?and?Pillar Coal Mining

    By Andre Zingano

    It is known that the backfilling confinement increases the pillar strength and also reduces the rib lateral displacement. With backfilling, it is possible to increase the room-and-pillar mining recove

    Jan 1, 2011

  • SME-ICGCM
    A New Rockbolt Axial Load Measuring Device

    By Hani Mitri

    A new monitoring device called SAFEBOLT (Stress And Force Evaluator in Bolts) has been recently developed. The device SAFEBOLT, essentially replaces the load cell, it permits the monitoring of bolt a

    Jan 1, 2001

  • SME-ICGCM
    A probabilistic approach to ground support design in underground mines,

    By Kevin Beauchamp

    In many cases traditional support designs cover the many variations in ground conditions and bolt performance by a conservative factor of safety. The result is that most bolts are ineffectual most of

    Jan 1, 2003

  • SME-ICGCM
    The NIOSH Shield Hydraulics Inspection and Evaluation of Leg Data (Shield) Computer Program (7f22bea3-620b-4bd0-a4b9-04ee2b01eea7)

    By Thomas Barczak

    Longwall shields provide essential ground control in Iongwall mining, yet a high percentage of shields are operating at less than peak capacity and many at well below the rated support capacity due to

    Jan 1, 2002

  • SME-ICGCM
    An Investigation into the Support Systems in South African Collieries

    By A. Wilkinson

    An investigation into the performance of support systems that are currently used in South African coal mines was conducted. Five most critical components of a support system have been identified. Thes

    Jan 1, 2005

  • SME-ICGCM
    State Of The Art Testing Of Powered Roof Supports

    By Robert C. Garson

    The Mine Roof Simulator at the DOE'S Mining Equipment Test Facility is described. Its use in the research and development on the behavior and response of longwall roof supports to simulated mine

    Jan 1, 1982

  • SME-ICGCM
    Rock Bursting and Seismicity During Ramp Development, Lucky Friday Mine, Mullan, Idaho (70e1cb23-d3f9-44e0-89bb-620862946d41)

    By J. K. Whyatt

    A comprehensive survey of mine seismicity and rock bursting during development of two sublevels at the Lucky Friday Mine, Mullan, ID, USA, was conducted to better define rock failure mechanisms and so

    Jan 1, 1998

  • SME-ICGCM
    Simplified Pre-and Post-Processing Technique for Performing Finite-element Analyses of Deep Underground Mines (4c70a887-9438-4254-8d3e-3283730c59e0)

    By Marc T. Filigenzi

    Two of the major ground control safety issues confronting underground mine operations today are shaft pillar stability and the failure of rock around active mine openings. Failure of a mine shaft can

    Jan 1, 1997

  • SME-ICGCM
    RYBAD Empirical Field Model For Prediction Of Maximum Land Subsidence Associated With Longwall Coal Mining

    By Thomas Rymer

    Mathematical modelling of mine subsidence measured at 21 locations in Pennsylvania and northern West Virginia allows for the refinement of current methods of predicting maximum land subsidence associa

    Jan 1, 1988

  • SME-ICGCM
    Seepage and Reinforcement Behavior of Grouting Into Slaking-Prone Mine Tunnel Floor

    By Hideki Shimada

    In underground coal mines, grouting method is employed in order to reinforce the floor and to control the movement of groundwater into the roadway. However, the seepage and the reinforcement behavior

    Jan 1, 2002

  • SME-ICGCM
    Support Resistance And Roof Behaviour Of A Longwall Face With 4-Leg Shields

    By S. S. Peng

    The hydraulic powered supports have been employed in U. S. longwall mining for the past two decades. Yet the sciences of roof control at the powered supported faces remain largely unknown. In order to

    Jan 1, 1982

  • SME-ICGCM
    Optimization Of Bench Blast Design With The Aid Of Computer (febe1846-7d11-4969-9dc5-f8d6a8a628b1)

    By Wei Wu

    A new bench blast design method and its realization with the assistance of the computer is introduced. The basic design principle is to define a rhomb cell, called fully-fractured zone, through a seri

    Jan 1, 1992

  • SME-ICGCM
    Long-term Subsidence Over Longwall Chain Pillar Systems and Its Effects on Surface Structures

    By Yi You

    A research has been conducted to study the long-term subsidence and its possible effects on surface structures In this research, the surface movements in areas when potential for developing long-term

    Jan 1, 1997

  • SME-ICGCM
    In Situ Stress For Underground Excavation Design In A Naturally Fractured Rock Mass

    By Andrew J. Hyett

    The ISRM commission on testing methods has recently presented Suggested Methods for rock stress determination (Kim & Franklin, 1987). This proposes that even if the magnitude of in situ stress is not

    Jan 1, 1989

  • SME-ICGCM
    Pillar Design - Continuous Miner Butt Section And Longwall Development Sections

    By Lawrence R. Artler

    The North American Coal Corporation, its subsidiaries and other coal companies, have been mining the Pittsburgh #8 seam in Eastern Ohio for several decades. Underground mining by the "room and pillar"

    Jan 1, 1984

  • SME-ICGCM
    Strata Disturbance Prediction For Mining Beneath Surface Water And Waste Impoundments

    By Madan M. Singh

    Mining under bodies of water such as oceans, lakes, rivers, streams, ponds, and other impoundments, is not a new technique. However, in the United States it has been fairly restricted to date. In orde

    Jan 1, 1981

  • SME-ICGCM
    Behavioral Aspects of Roof/Rib Injuries--Implications for Training Utilizing Stereoscopic Photography

    By Edward A. Barrett

    A significant number of injuries resulting from fa118 of roof and rib may be avoided by modifying the reactive behavior of miners as they encounter potentially hazardous ground conditions. In 1984-85,

    Jan 1, 1986

  • SME-ICGCM
    Shear Bond Characteristics in Grouted Cable Bolts

    By Jian Yong Chen

    The results of a laboratory investigation of pullout tests conducted on grouted, plain cable bolts are reported. The main purpose of the study is to determine experimentally the shear bond stiffiess o

    Jan 1, 2005

  • SME-ICGCM
    A Simple Finite Element Model For Predicting The Behaviour Of Hydraulically Powered Coalmine Supports

    By Brian G. D. Smart

    A scheme is presented whereby the complexities of design and operation of a hydraulically powered coalmine support are modelled using the finite element method. This enables predictions to be made of

    Jan 1, 1992