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  • SME-ICGCM
    The Effect Of Hazardous Geologic Structures On Gateroad Stability

    By Frank E. Chase

    Geologic structures have been responsible for numerous underground accidents and fatalities, and are a constant-source of down time. During - longwall mining, ground control problems associated with g

    Jan 1, 1990

  • SME-ICGCM
    Study Of Quantitative Impacts To Ground Water Associated With Longwall Coal Mining At Three Mines Sites In The Northern West Virginia Area

    By Denise Y. Dixon

    The objectives of this study were to (1) document the hydrologic impacts of longwall mining on ground water, (2) identify the factors which affect the extent of dewatering, and (3) develop empirical t

    Jan 1, 1988

  • SME-ICGCM
    Study of the Behavior for Backfilling Material in Room-and-Pillar Coal Mining

    By Joao Felipe Costa, Jair C. Koppe, Andre Zingano, Cleber Gomes

    "Run-of-mine Brazilian coal has high ash content and low calorific power. Therefore, the coal must be washed to achieve the power plant specifications for burning coal. A large amount of waste results

    Jan 1, 2010

  • SME-ICGCM
    Instrumentation and Monitoring For Pillar Extraction in a Deep, Faulted Uranium Mine (3da9a7b4-75c4-492e-843f-6defa6026a38)

    By Thomas R. Scotese

    A rock mechanics instrumentation and monitoring program was implemented during pillar extraction at Gulf Mineral Resources' Mt. Taylor Mine, the deepest uranium mine in the U.S. Three types of mo

    Jan 1, 1984

  • SME-ICGCM
    Volumetric Measurement of Rock Movement Using Photogrammetry

    By Stephen R. Iverson, Jeffrey C. Johnson, Donovan J. Benton, Michael J. Raffaldi, Lewis A. Martin

    "The NIOSH ground control safety research program at Spokane, Washington, is exploring applications of photogrammetry to rock mass and support monitoring. This paper describes two ways photogrammetric

    Jan 1, 2015

  • SME-ICGCM
    Chemical Consolidation For Roadway Surrounding Rock - It's Theory And Applications

    By Jinhua Wang

    Based on engineering examples and theoretical analysis, the mechanism of chemical consolidation for fractured roadway surrounding rock was discussed. The chemical consolidating materials and three con

    Jan 1, 1996

  • SME-ICGCM
    Development and Implementation of the “Spin to Stall” Resin Bolting System at Anglo Americans Australian Underground Coal Operations

    By Ismet Canbulat, John Naylor, Jason Emery, Peter Craig, Andy Sykes

    "Longwall mining is by far the most common method of underground coal extraction in Australia. The industry trends and expectations are placing increasing emphasis on the reliability and productivity

    Jan 1, 2015

  • SME-ICGCM
    An Alternative To A Manual Torque Check On Roof Bolts

    By Joseph A. Cybulski

    In response to the mining of reserves with increasingly adverse round conditions and the roof support recommendations of current rock mechanics theories, roof support systems have continued to improve

    Jan 1, 1990

  • SME-ICGCM
    Optimization Research on Flexible Shield Supports Mining Method in Steeply Coal Seam

    By Bingjie Huo

    "China is a major coal producer and consumer. It is necessary to mine the steeply pitching coal seams due to development of the coal industry to meet the increasing needs for coal. Flexible shield sup

    Jan 1, 2010

  • SME-ICGCM
    Development And Demonstration Of An Alternate Mining Geometry For Improved Ground Control In An Illinois Coal Mine

    By Y. P. Chugh

    About 60-70% of the underground mined coal in Illinois is extracted using a room-and-pillar mining method that permits extraction of about 50% of the coal. The remaining coal is left behind in the for

    Jan 1, 2004

  • SME-ICGCM
    Mechanism and Prevention Measure of Rib Spalling in 6.5 Meter High Caving Face in Thick Coal Seam with Undulated Floor

    By Weidong Pan, Yinchao Yang, Baodong Zuo

    Fully mechanized mining technology, with a large cutting height in thick coal seam, has been developed to be large-scale, mechanized, and intelligent. Furthermore, it is also superior to other mining

    Jan 1, 2017

  • SME-ICGCM
    Effect of Vertical Discontinuities on Roof Stability and Ground Control Challenge: A Case Study

    By Li Yang, Andre Cezar Zingano, Alberto Fronza

    "Immediate roof control is very important to the security and stability of entries in coal mining. It is also the highest cost in the coal mining operation, and roof spalling is directly responsible f

    Jan 1, 2017

  • SME-ICGCM
    Highwall Mining of Thick, Steeply Dipping Coal: A Case Study in Geotechnical Design and Recovery Optimization

    By David P. Conover, Jake Bain, Christopher M. Ross

    "Highwall mining of thick (up to 100 ft) steeply dipping (20° or more) coal seams provides many challenges, both geotechnically and operationally because seam dips near or in excess of highwall mining

    Jan 1, 2017

  • SME-ICGCM
    How to Mitigate Coal Mine Bumps Through Understanding of the Violent Failure of Coal Specimens

    By Gamal Rashed

    This research is divided into two parts: the first part of this research focuses on understanding coal mine bump mechanisms, and the second part focuses on mitigating the violent failure associated wi

    Jan 1, 2013

  • SME-ICGCM
    Engineering Classification of Ultra-close Multiple Seam Roofs in Datong Mining District of China

    By Yingda Zhai

    The range of interburden thickness between coal seams in Datong Mining District of China is large. From mining operation point of view, the closer is between the two seams, the greater is the impact f

    Jan 1, 2005

  • SME-ICGCM
    Geotechnical Considerations for Concurrent Pillar Recovery in Close Distance Multiple Seams

    By Peter Zhang

    "Room-and-pillar mining with pillar recovery has historically been associated with more than 25% of all ground-fall fatalities in the underground coal mines of the United States. The risk of ground fa

    Jan 1, 2017

  • SME-ICGCM
    Evaluation of Rock Excavation Technologies for Seismically Active Mines

    By S. Paul Singh

    "The long-term viability of seismically active and/or deep mining operations hinges upon the industry's ability to maintain profitability in a climate of increasingly difficult conditions, escalating

    Jan 1, 2010

  • SME-ICGCM
    Modeling the Effect of Bolts on the Behavior of Rock Pillars and Associated Insights on Rib Reinforcement

    By Gabriel Walton, Sankhaneel Sinha

    "Rib failures are a major hazard in underground mining. When pillars are subjected to loading, extensile cracks are generated parallel to the excavation boundary, which can manifest as rib falls. A co

    Jan 1, 2017

  • SME-ICGCM
    An Alternative for More Productive Rib Bolting in Underground Mining Applications

    By Joe E. Bryan, John P. McDonnell

    "Underground mine rib stability is an ongoing safety issue in all mining applications. Rib-related accidents present at least as many problems as roof-related ground control. Underground coal mine rib

    Jan 1, 2015

  • SME-ICGCM
    An Assessment of Coal Pillar System Stability Criteria Based on a Mechanistic Evaluation of the Interaction between Coal Pillars and the Overburden

    By Guy Reed, Russell Frith, Kent Mctyer

    "Coal pillar design has historically been based on assigning a design factor of safety (FoS) or stability factor (SF) to coal pillars according to their estimated strength and the assumed overburden l

    Jan 1, 2016