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A Comparison of the Overburden Loading in ARMPS and LaModel
By Ihsan Berk Tulu, Keith A. Heasley, Chris Mark
"The Analysis of Retreat l\.fining Pillar Stability (ARJ\1PS) and the Lal\.fodel programs have been used successfully in the U.S. for designing safe pillar recovery operations for many years. However,
Jan 1, 2010
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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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Supporting Method of the Bolted Strata in Large Deformation Roadways
By Shuangsuo Yang
Based on field observations and physical modeling of simulated materials, the dynamic equilibrium principle on the whole interaction process between the surrounding rocks and support of large deformat
Jan 1, 2005
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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
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Historical Perspective And Future Projection Of Longwall Mining In The United States (19eaaffe-326c-46a4-9a81-dc104b2df560)
By Thomas M. Barczak
This report chronicles the historical development of longwall mining in the United States and speculates on future developments to the turn of the century. Five eras of technological development durin
Jan 1, 1992
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Non-confirmation Mathematics for Wall Rock Classification for Mine Support
By Guangyi Sun
Wall rock classification method for coal mine support is the main factor affecting mine support. It is greatly affected by the combined effect of randomness, fuzziness and human being's incomplet
Jan 1, 2005
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Subsidence monitoring at a shallow partial extraction room-and-pillar mine in midwestem United State
By Yoginder P. Chugh
Subsidence may be observed above partial extraction shallow room-and-pillar mines where the coal seam(s) is associated with weak and thick claystone in the floor. This paper presents results of subsid
Jan 1, 1989
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Aspect Ratio and Other Parameters That Affect the Performance of Burrell Can Roof Supports
By David F. Gearhart
The Burrell Can1 is a thin, steel, tubular shell filled with aerated concrete that is used as a roof support in coal mines. The Can height is always shorter than the mining entry, so it is capped with
Jan 1, 2012
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Correlation Between Unconfined Compressive And Point Load Strengths For Appalachian Rocks
By Luis E. Vallejo
The strength measured by the uniaxial compression test is a parameter that is widely used for the engineering classification of rocks. Sedimentary rocks such as shales, however, are difficult to evalu
Jan 1, 1989
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Mining Geotechnical Benchmarking
By Vincent A. Scovazzo
Benchmarking is a business management process that seeks improvement through the study and reapplication of practices conducted by industry leaders. This discussion presents objectives and organizatio
Jan 1, 2000
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The Development and Application of Polyurethane Injectable Cable Bolts
By Dakota D. Faulkner
Cable bolts have been very effective in mine ground control. Non-tensioned and tensioned cable bolts are now used for both primary and supplemental bolting (Suder, 2001; Mirabile, 2010). In the United
Jan 1, 2012
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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
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Impact Of Vertical Stress On Roadway Conditions At Dartbrook Mine
By Ken Mills
A program of stress change and roadway deformation monitoring was undertaken to measure the forward abutment load distribution about a retreating longwall panel at Dartbrook Mine. The results of this
Jan 1, 2000
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Numerical simulation of coal pillar loading with the aid of a strain-softening finite difference model
By A. T. Iannacchione
Numerical simulation of coal pi1lar loading has traditionally been a difficult task due to the unique and highly variable properties of coal and the inability of numerical procedures to duplicate thes
Jan 1, 1989
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Pre-mining stresses at some hard rock mines in the Canadian Shield (2c76bca0-8dd2-4a44-bc9b-85524b3514cf)
By B. Arjang
ABSTRACT: Ground stresses are one of the significant factors in the context of rockbursts and underground instability at some hard rock mines in Canada. Overcoring strain relief measurements using tri
Jan 1, 1989
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The Influence of the First Layer Thickness of Immediate Roof on its Stability
By Lixun Kang
Bedded structure is the characteristics of coal measures strata. Bedding planes, coal streaks and soft rock bands existing in roof strata destroyed its continuity in the direction perpendicular to the
Jan 1, 2005
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Front abutment effects on supplemental support in predriven longwall equipment recovery rooms
By Jeffrey M. Listak
This report describes a study, conducted jointly by BethEnergy Mines Inc. and the Bureau of Mines, to assess the effects of longwall front abutment loading on various supplemental support materials u
Jan 1, 1989
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Multiple Seam Mining Interactions: Case Histories from the Harris No. 1 Mine (b50cab1b-ba36-4377-a652-1d452c62f433)
By Frank E. Chase
The Harris No. 1 Mine, located in Boone County, WV, has been longwalling the Eagle Coalbed for over 30 years. Harris has experienced numerous interactions associated with the extensive room-and-pillar
Jan 1, 2005
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Material Instability Hazards In Mine Processing Operations
By John W. Fredland
Many accidents occur in the mining industry as a result of the instability of material during handling and processing operations. Accidents due to dump point instability at stockpiles, and at spoil or
Jan 1, 1993
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Outcomes of the Landmark Longwall Automation Project with Reference to Ground Control Issues
By Michael Kelly
Inertial navigation technology has, for the first time, allowed the position of a longwall shearer to be mapped in three dimensions. Following the success of the technology in highwall mining and succ
Jan 1, 2005