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A comparison between two- and three-dimensional numerical models of a Coeur d'Alene District mine
By T. J. McMahon
This Bureau of Mines study describes the development of a large-scale, three-dimensional, finite-element model of a deep-vein Coeur d?Alene District mine. The three-dimensional model was prepared from
Jan 1, 1989
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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
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Development Of A Statistical Technique For Assessing Sandstone Escarpment Stability
By Hamid Maleki
During the last decade, a significant amount of research has been conducted by Energy West Mining Company, government agencies, academia, and consulting companies to develop predictive tools for asses
Jan 1, 2000
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Ground Control Practice at Leeville Underground Mine
By Changshou Sun
The geotechnical properties of mining zones at Leeville Underground mine (or simply called Leeville mine through this paper) are different from one zone to another. The typical ground condition is poo
Jan 1, 2013
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A Cooperative Study Of Gate Entry Designs Welbeck Colliery (UK) And Jim Walter Resources (USA)
By Greg Hendon
Longwall developments in the UK have historically consisted of single entry gate roads. Adjacent developments were separated from existing panels by large barrier pillars (designed of sufficient width
Jan 1, 1995
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Resin-Grouted Cables For Longwall Tailgate Support Stability
By Stephen C. Tadolini
The U.S. Bureau of Mines (USBM) is conducting research to provide alternatives for traditional secondary support methods. These cost-saving methods are proving to afford safer installation, improve en
Jan 1, 1994
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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
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Comparison of Acoustic Emission and Stress Measurement Results to Evaluate the Application of the Kaiser Effect for Stress Determination in Underground Mines
By Lorraine Kent
Comparison of in-situ stress overcore measurement results with those determined from laboratory evaluation of Acoustic Emission (AE) testing on oriented sub-core samples has been carried out for a var
Jan 1, 2002
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Introducing the New Windows ARMPS-LAM Program
By Keith Heasley, Christopher Newman, Zach Agioutantis
"Previously, in 2013, a laboratory version of the computer code ARMPS-LAM, introduced at the 32""d International Conference of Ground Control in Mining, successfully integrated the laminated overburde
Jan 1, 2016
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Determination Of The Rock Strength From Portable Rock Tester
By K. F. Unrug
A new testing technique for the determination of the rock strength from portable rock tester is proposed. It is a quick and economical method that can determine the rock strength with reasonable accur
Jan 1, 1990
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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
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Design, Construction And Performance Of A Single Pass Lining For Soft Ground Coal Mine Tunnel Entries
By Donald P. Richards
West Elk Coal Company operates its Mt. Gunnison No. I mine on the western slope of the Rocky Mountains in Western Colorado. The mine is located along the north fork of the Gunnisson River near Somerse
Jan 1, 1984
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Influence of a Coal Mine Subsidence on An Adjacent Dam
By Nengxiong Xu
The WTZ coal mine is located adjacent to an auxiliary dam in P. R. China. The mining-induced ground movements are calculated using a 3-D numerical procedure based on the finite difference method (FDM)
Jan 1, 2013
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Utilizing The ?Advance And Relieve? Method To Reduce Horizontal Stress Affects On The Mine Roof, A Case Study (b5b945af-699f-46b0-ae56-a98434baad9f)
By Dennis R. Dolinar
A room and pillar coal operation in central Pennsylvania was experiencing roof cutters and long running roof falls caused by high horizontal stresses. The roof conditions created hazards for the miner
Jan 1, 2000
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The Influence of Interface Friction and W/H Ratio on the Violence of Coal Specimen Failure ? A Comparison Between a Bump and Non?Bump Prone Mines
By Simon H. Prassetyo
Violent failures of coal pillars, known in practice as coal mine bumps, have long been a subject of investigation. Many field investigations have considered geological conditions that create high stre
Jan 1, 2011
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Application Of Bolt Design Criteria At Galatia Mine
By Tom Denton
The bolt design criteria, since it was first published by Dr. John Stankus (Stankus, 1997), has been recognized as an important tool in ground control design. This concept is based on the Optimum Beam
Jan 1, 2000
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Application in Design for Close Proximity Multi-Seem Mining
Virtually all mineable Appalachian coal seams exist in a multi-seam environment. This makes it inevitable that most seams will eventually experience interaction induced ground control and mining probl
Jan 1, 1987
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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
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The Use of NDT Methods to Determine the Condition of Rockbolt Support During the Recovery of a Previously Flooded Coal Mine Roadway at Thoresby Colliery
By Brian Clifford
Thoresby Colliery is in the process of recovering an old roadway that was flooded following the closure of an adjacent mine. The aim is to re-use the roadway as a gate road for a longwall retreat pane
Jan 1, 2002
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Moonee Colliery: Renewing The Economic Viability Of A Mine Using Microseismic And Hydraulic Fracturing Techniques In Massive Roof Conditions
By Peter Hayes
Moonee Colliery operates a longwall extraction system in the Great Northern seam of the Newcastle Coal Measures, approximately 100km north of Sydney, NSW. In the initial mine area of longwall block
Jan 1, 2000