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  • SME-ICGCM
    Detection of Abandoned Mines and Air Passages/Burning Centers of Mine Fires by Combined Electromagnetic Method

    By Shu Yan

    The high resolution resistivity method (HRRM) is developed specifically for detecting underground cavities and tunnels. HRRM has a special feature in that it can recognize and cancel static shift, whi

    Jan 1, 2005

  • 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
    Multiple Seam Mining Feasibility in the Illinois Basin (USA): LaModel Stress Analysis Programs

    By Rebecca Hardy

    The escalating demand for coal, in addition to the steady depletion of reserves, has produced increasingly difficult mining conditions for coal mining companies within the United States, resulting in

    Jan 1, 2006

  • SME-ICGCM
    Pre-Driven Longwall Recovery Room Under Weak Roof Conditions ? Design, Evaluation, and Monitoring

    By Peter (Yunqing) Zhang

    Longwall recovery under weak roof conditions could have considerable delay if the immediate roof is weak and deteriorates during screening. A pre-driven longwall recovery room is a feasible solution

    Jan 1, 2006

  • SME-ICGCM
    Feasibility Study And Design Of A New Underground Coal Mine Developed From Open Cut Highwall In Indonesia (25d3d094-fa9d-4970-a166-6a4fe20badce)

    By Takashi Sasaoka

    About 200 M tons of coal were imported into Japan in 2007 and Indonesia was its second largest exporter, accounting for about 30 M tons (12% of the total imported coal). Indonesia produced about 200 M

    Jan 1, 2009

  • SME-ICGCM
    Effects of Weak Bands on Pillar Stability in Stone Mines: Field Observations and Numerical Model Assessment

    By Gabriel Esterhuizen

    Observations of pillar conditions in limestone mines showed that the presence of weak bands in the limestone can result in pillar damage at stresses that are lower than one would otherwise expect. Th

    Jan 1, 2007

  • SME-ICGCM
    In-Situ Tests and Numerical Simulation about the Effect of Annulus Thickness on the Resin Mixture for Fully Grouted Resin Bolt

    By Andre Zingano

    The objective of this paper is to study the effect of annulus thickness on the quality of resin mixture for fully grouted resin bolt. Pullout and mixture tests were made in underground coal mines for

    Jan 1, 2008

  • SME-ICGCM
    Designing Free-Standing Steel Supports for Coal Mine Roof Support

    By Sam Spearing

    Free-standing supports are commonly used in coal mines in the USA, particularly when longwalling. A recent trend has been the development of prop supports. Prop supports have many advantages over bu

    Jan 1, 2008

  • SME-ICGCM
    Application of Chain Conveyor Cutter (Ccc) to Highwall Mininig System

    By Takashi Sasaoka

    Chain Conveyor Cutter (CCC) is a chainsaw-type machine and originally developed for the construction of underground walls and/or ground improvements. CCC was developed from the accumulated technology

    Jan 1, 2012

  • SME-ICGCM
    Field Monitoring of Rock Bolting Performance in Weak Roof Strata

    By Tingkan Lu

    To understand the reinforcing mechanisms of the fully grouted resin bolt and clarify its performance in weak roof strata, the field monitoring investigation using instrumented bolts has been conducted

    Jan 1, 1998

  • SME-ICGCM
    Towards a Real Time Response to Changing Strata Conditions on a Longwall

    By P. Trueman

    A project is underway to convert a validated methodology to a system that will permit the near real time interpretation of loading data from longwall powered supports, allowing rapid adaptation of min

    Jan 1, 2006

  • SME-ICGCM
    The Design And Selection Of Powered Supports For Application In 4.5 Metre Extraction At Daw Mill Colliery

    By Clive Chadbourne

    Investigations of world wide coal face strata control practice, the study of theoretical calculations and detailed engineering analysis have been combined to design and select a powered roof support s

    Jan 1, 1994

  • SME-ICGCM
    Development and Field Tests of Look-Ahead Radar and Horizon Sensing for Coal Cutting Drums

    By Gerald L. Stolarczyk

    Safe and efficient coal extraction requires advanced radar subsystems that can be mounted on cutting drums of coal cutting machines. A look-ahead radar (LAR) must solve the radio geophysics problem o

    Jan 1, 2006

  • SME-ICGCM
    A Case History of the Effect of Mine Subsidence on a Concrete Arch Bridge in Northern West Virginia

    By R. B. Alke

    Request to Mine Beneath Bridge The Jabs Run Bridge is a reinforced portland concrete arch filled bridge located on WV Bouts 7 near Pentress, WV. The bridge has a span of 22.9 m (meters) and a height o

    Jan 1, 1984

  • 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
    Cost Preventive System To Control Unstable Roof In Main Line Haulage Entries

    By John Popovich

    The MICON RokLok binder system including component and consolidation processes and safety and its first aide are described. The implementation procedures and selection of injection parameters are disc

    Jan 1, 2001

  • SME-ICGCM
    Pillar Design Issues For Underground Stone Mines (5c6602ba-4b85-4ec3-ad15-c1c321c1afcd)

    By A. T. Iannacchione

    Underground stone mining represents an emerging sector for the U.S. mining industry. As this expansion takes mines under deeper cover and as more efficient mining methods are utilized, adequate stone

    Jan 1, 1999

  • SME-ICGCM
    Longwall Support Monitoring

    By Robert G. Harris

    During the last five years there have been significant improvements in face support monitoring techniques particularly in respect of face pressure. The measurement of support loading pressures was

    Jan 1, 1993

  • SME-ICGCM
    Development of in-situ stress measurement technique using ultrasonic wave attenuation method - A progress report

    By Y. L. Sun

    The feasibility of using the ultrasonic wave attenuation method for measuring in-situ stress is examined theoretically and experimentally. The theoretical analyses show that for a given rock type the

    Jan 1, 1989

  • SME-ICGCM
    Drainage Of Water From Abandoned Mines By Horizontal Drilling

    By Alan J. Zeni

    Drainage of water from abandoned underground mines has become important in recent years because of safety concerns when mining near abandoned works or reentering abandoned mines for further developmen

    Jan 1, 1990