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Remote Detection Of Abandoned Mine Workings Using Radio Imaging Method Techniques
By James G. Schotsch
Unmapped abandoned mines are hazards for under¬ground mines, surface mines and surface structures. The Radio Imaging Method (RIM) provides a cross borehole technique to remotely detect abandoned mine
Jan 1, 1990
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Economic Evaluation Of Subsidence Damage Mitigation Techniques
By David C. Johnson
Coal mining in Illinois has resulted in many structures being exposed to subsidence damage. Damage mitigation techniques (DMT) applied in the foundation design/construction have proven successful in m
Jan 1, 1993
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Gateroad Support in the Czech and Polish Coal Mining Industry - Present State and Future Developments
By Stanislaw Prusek
The present state of Czech and Polish coal mining industry is presented at the beginning of the article. This paper will inform the reader of the general data concerning hard coal reserves? number of
Jan 1, 2011
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Application of Microseismic Monitoring to Longwall Geomechanics and Safety in Australia
By Xun Luo
In this paper we report on the use of microseismic monitoring techniques to investigate the fracturing process associated with longwall mining. The study was carried out at three mines in Australia an
Jan 1, 1998
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Prevention. Control and Management of Coal and Gas Outbursts
By Lu Jiam Zhang
Coal and gas outburst is one of the serious natural disasters in the coal mines of China. Since 1950, more than 10,000 coal or gas outbursts have occurred in more than 200 underground coal mines of di
Jan 1, 1987
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Application of Stress, Geologic, and Support Design System (Sgssm) to Ground Control for Mine Slope Entries
By John Stankus
Accurate evaluation of stress and geological conditions is critical to ground control design in underground openings. For a mine slope entry, the problem becomes more complicated because a slope trans
Jan 1, 2011
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Electromagnetic Seam Wave Mapping Of Roof Rock Conditions Across A Longwall Panel
By Larry Stolarczyk
The mining industry would benefit greatly by imaging geologic conditions well in advance of mining. In layered deposits such as coal, trona, quartz, and potash, natural waveguides form and enable elec
Jan 1, 1999
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Measurement Of Structural Deformation And Tilt During Subsidence
By Revendra Awasthi
The application of a horizontal inclinometer and a tiltmeter to measure tilt, curvature, and deformations of shallow footings during mine subsidence is described. The measurements were taken during mi
Jan 1, 1990
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New Methods and Technologies of Roofbolting in Australia Coal Mines
By Mictck Rataj
Methods of rock reinforcement in Australian coal mines are being advanced progressively through the better understanding of rock failure mechanisms around roadways and the-development of improved bolt
Jan 1, 1997
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The Impact Of Variability In Coal Strength On Mine Planning And Design - A Case History
By David A. Newman
Strength and physical property testing of coal is conducted regularly by the Arch Mineral Corporation as part of reserve exploration. Pillar design and mine layout are the primary applications for the
Jan 1, 1993
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Influence of joints on the elastic response of a LFUFL stope to FEM mining
By W. G. Pariseau
A new approach to the direct inclusion of the effects of joints and geologic structure in rock mechanics analyses is applied to an elastic analysis of stability of a Lucky Friday undercut and 4111 lon
Jan 1, 1989
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Geotechnical Planning Basis for the Optimization of Workings
By Nikolaos Polysos
Besides considering the given geomechanical conditions, the geological/geotechnical logging of drill cores and heading faces during the driving of parallel entries and the resulting rock classificatio
Jan 1, 2003
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Statistical Regional Calibration Of Subsidence Prediction Models
By D. N. Cleaver
Like other influence function methods, the SWIFT subsidence prediction program, developed within the Mineral Resources Engineering Department at the University of Nottingham, requires calibration to r
Jan 1, 1995
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Prediction And Control Of Surface Subsidence Over Abandoned Mined Lands In Carbonia (Italy)
By Pier Paolo Manca
The investigated area lies close to a large town and covers an area of about lkm2. The mine was worked at depths ranging from 5 to 100 meters but mining operations actually ceased some 50 years ago. T
Jan 1, 1999
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Methods of Controlling Hard Roof in a Longwall Face
By Linsheng Xu
When coal seam is under the integral thick sandstone (or conglomerate), the structure of thick sandstone is integral and its strength is rather high. After coal is extracted, the roof is hanging and c
Jan 1, 1986
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Application Of A Static And Geophysical Monitoring System For Detection Of Stability Problems
By Maleki. Hamid
The U.S. Bureau of Mines implemented an inte¬grated static and geophysical monitoring program in a southern Wyoming mine to study changes in seismic wave propagation properties in roof strata. The pur
Jan 1, 1993
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Longwall Stability Analysis Of A Deep, Bump-Prone Western Coal Mine-Case Study
By Lance R. Barron
The U.S. Bureau of Mines, in cooperation with a central Utah coal .mine operator, began a study in July 1988 into longwall gateroad designs applicable to deep, bump- prone mine conditions. Prior to th
Jan 1, 1990
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Rehabilitation of Underground Surge Bunker Following Massive Rib Wall Failure
By Rob Robinson
Following a massive rib wall failure along the reclaim belt of the large underground surge bunker at CONSOL?s Bailey Mine, a multifaceted, cleanup and rehabilitation effort was initiated to rapidly st
Jan 1, 2007
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Critical Appraisal Of Pillar Design As Required By Coal Mines Regulations Of India VIS-VIS Latest Rock Mechanics Formulae
By S. K. Sharma
The present study attempts to critically review the pillar-design as required by Coal Mines Regulations of India vis-a-vis latest rockmechanics formulae, Equivalent material modelling was the approach
Jan 1, 1992
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Aerostatic Support System For Underground Coal Mines
By R. J. Morrell
The Bureau of Mines developed a ground support system for use with an underground coal auger. The system consists of inflatable airbags that are inserted in the holes as they are drilled, and then gra
Jan 1, 1988