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Monitoring of Mining Surface Deformation using Satellite InSAR and Precise GPS Techniques
By Karsten Zimmermann
Surface deformation monitoring is required all over the mining industry. For example oil and gas companies need this information to support exploration and production activities and to detect impacts
Jan 1, 2008
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Cable Bolting - Potential Applications For Variable Strata Conditions
By David Allen
Cable bolting is a relatively new strata reinforcement technique that has been used successfully in Australia and the United Kingdom. Jim Walter Resources, Inc. has examined the principles and can vis
Jan 1, 1994
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Effects Of Subsidence On Steep Topography And Cliff Lines
By Don Kay
A two year study into the effects of coal mining induced subsidence on cliff lines was undertaken by the Department of Mineral Resources with the support of a grant under the National Energy Research,
Jan 1, 1992
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Practical Consideration In Longwall Support Selection
By Thomas M. Barczak
This report examines practical considerations in longwall support selection that have evolved from Bureau of Mines ground control research. The scope of discussion includes trends in support selection
Jan 1, 1990
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Sizing Of Final Stumps For Safer Pillar Extraction
By Christopher Mark
Pillar recovery continues to be one of the more hazardous activities in underground coal mining. Safety requires that the roof above the intersection remain stable until after the pillar has been extr
Jan 1, 2001
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The Fault At The End Of The Tunnel
By S. S. Rowland
Good afternoon, ladies and gentlemen. It is a pleasure, for several reasons, to be here at this 13th International Conference on Ground Control in Mining. Of course it's always a pleasure to be a
Jan 1, 1994
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An Application Of Energy Release Rate
By Morgan M. Sears
In recent years, one large mine collapse and numerous smaller bump events have resulted in a renewed interest in coal bump research. With numerical modeling, the Energy Release Rate (ERR) calculation
Jan 1, 2009
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An Integrated Approach To Subsidence Modelling And Prediction In The Collie Coal Basin (Western Australia)
By Ian Misich
A research programme has been undertaken to evaluate and predict the effect of total extraction of coal by underground methods on the superimposed strata, aquifer systems and ground surface in the Col
Jan 1, 1993
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Roof Control In Longwall Faces - Geological And Geotechnical Characteristics And IT Solution For Prediction (50d59152-95b6-444a-a8f2-4ae0c4262f3f)
By Holger Witthaus
Various seam conditions had been examined during longwall production at RAG German hard coal mines. Based on the field data a prediction method was developed considering separation planes as influenci
Jan 1, 2009
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Mitigating the Effects of High Horizontal Stress on Ground Control in An Underground Stone Mine: A Case History
By John Ellenberger
The nature of a stone deposit is rarely defined through exploration and engineering design, but more through the actual experience encountered as the mine develops; hence, issues with ground control a
Jan 1, 2012
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Rock Mechanics Issues In The Trona Patch
By Archie Richardson
The trona mines in the Green River Basin, commonly known as the "trona patch," present an interesting set of rock mechanics issues stemming from mining in a unique underground environment. Like other
Jan 1, 1999
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Multiple Seam Highwall Mining In Appalachia (428a0473-c28a-4ef9-81d1-1ed7e6911c69)
By David Newman
Multiple seam underground coal mining is ubiquitous in Appalachia. Many coal properties have from two to ten or more economically mineable coal seams. Because of the ability to penetrate 600-feet to
Jan 1, 2009
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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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Design And Control Of Working Support In Polish Coal Mines Based On Three-Dimensional Numerical Modeling
By Slawomir Bock
One of the fundamental issues having a great influence on the safety of operations performed in underground mines is the support of workings which should assure their stability in a given geological s
Jan 1, 2009
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Monitoring Indices For The Support And Surrounding Strata System On A Longwall Face (d3af3b40-bd2b-43ab-adc6-f4c445bf5433)
By Ming-Gao Qian
How to monitor and control the support and surrounding strata system on a longwall face effectively is one of the major research problems in ground control. Based on observations on movements of the s
Jan 1, 1992
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The Load Transfer Properties of Post?Groutable Cable Bolts Used in the Australian Coal Industry
By Rob Thomas
Adequate load transfer is considered essential for optimum ground support and is increasingly important in weak roof and/or high stress environments. If adequate load transfer is achieved not only can
Jan 1, 2012
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Geologic Conditions Affecting Mineability in the Jane Mine.
By Stephen J. Harven
Geologic conditions in eight northern operating sections of Jane Mine, Keystone Coal Mining Complex. Armstrong County, Pennsylvania are defined by utilizing drillhole data and underground geologic map
Jan 1, 1987
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Applications of Microseismic Monitoring in China?s Underground Coal Mines
By Xiangxi Wu
Longwall and continuous mining are prevalent methods employed by Chinese underground coal operations. The main ground control challenges include roof skin deformation, roof collapse, and outbursts of
Jan 1, 2012
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Advanced Development of the Radio Imaging Methods
By Gerald Stolarczyk
The Radio Imaging Method (RIM) is based upon electromagnetic (EM) wave propagation in the coal seam waveguide. The radio geophysics theory underlying RIM was developed by Hill of the national Institu
Jan 1, 2006
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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