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Support of Tunnels in South African Gold Mines
By L. Z. Wojno
Tunnels in South African gold mines are developed at depths down to 3 600 m below surface where the virgin rock stress approaches 100 MPa and, on occasions, through rock where the field stresses excee
Jan 1, 1987
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Analysis Of Major Failure Through Integration Of Static And Dynamic Rock Mechanics Investigation
By K. Y. Haramy
Rock burst and coal mine bump research using static and dynamic rock mechanics instrumentation has been conducted for several decades. Research efforts typically have been conducted using static instr
Jan 1, 1988
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Continuous Monitoring Of Mechanised Breaker Line Supports To Investigate Roof And Pillar Behaviour
By I. L. Follington
A breaker line support (BLS) monitoring system, BLSmon, has been designed and constructed by the CSIRO and installed and commissioned at Laleham No.1 Colliery, Queensland. This system was designed to
Jan 1, 1992
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A Review of the Geomechanics Aspects of a Double Fatality Coal Burst at Austar Colliery in NSW, Australia in April 2014
By Bruce Hebblewhite, Jim Galvin
"A coal burst occurred on 15 April, 2014 at the Austar Coal Mine, located west of Newcastle, NSW, Australia. The burst resulted in fatal injuries to two men working as part of the mining crew at the d
Jan 1, 2016
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Subsidence Prediction In Illinois Coal Basin
By Ed D. Doney
Based on the subsidence data collected through a comprehensive subsidence monitoring program con: ducted over two longwall panels in an Illinois coal mine, mathematical models have been proposed for p
Jan 1, 1990
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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
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Use Of Database In Ground Control To Identify Weightings And Water Inflows
By G. C. Xiao
A database, incorporating historical data from British mines, to study the factors affecting inflows from proximate aquifers into longwall workings, showed that a main casual factor was the immediate
Jan 1, 1990
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Investigation of Electromagnetic Emissions in a Deep Underground Mine (0366ea57-3ba7-4a00-bec7-825a048e7e26)
By Douglas Scott
Highly stressed rock in stopes continues to be a primary safety risk for miners in underground mines because it can result in failures of ground that lead to both injuries and death. Spokane Research
Jan 1, 2004
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Imaging Ahead Of Mining With Radio Imaging Method (RIM-IV) Instrumentation And Three-Dimensional Tomography Software
By Larry Stolarczyk
A clear vision of the future coal mining industry was developed into a hierarchy of technology needs by the National Mining Association (NMA) and the Chief Executive Officers of the mining industry. A
Jan 1, 2003
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Assessment Of Underground Structural Design
By Eugene D. Krupa
Mine 33 of Beth Energy has serious and complex roof cutter problems causing delay of the advance rate of both the entry development and longwall face retreat. The cost of maintaining these entries is
Jan 1, 1990
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Engineering Geophysics - Mine Subsidence Risk Assessment Study
By Kanaan Hanna
Abandoned mines pose a serious threat to public health and safety, as well as the environment. When active workings approach old mine workings, miners could encounter significant hazards. Additionally
Jan 1, 2011
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Comparison of Closure Measurements with Finite Element Model Results in an Underground Coal Mine in Central Utah
By Jessica M. Wempen, William G. Pariseau, Michael K. McCarter
"Quantitative analysis of mine-wide subsidence at the kilometer scale and details of stress distribution about an advancing longwall face are estimated using an adaptation of the finite element method
Jan 1, 2018
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Field Measurements of Chain Pillar Response to Longwall Abutment Loads
By Christopher Mark
Current longwall pillar design methods are based on many assumptions about pillar and entry response to longwall abutment loads. Knowledge of the magnitude and time-of-arrival of abutment loads is ess
Jan 1, 1986
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Numerical Model Simulation of a Development Pillar at a Steeply Dipping Underground Limestone Mine
By Morgan M. Sears, Gamal Rashed, Jim Winfield, Brent Slaker
"Over the past decade, ground falls have resulted in five fatalities, representing over 40% of all fatalities occurring in underground stone mines in the United States. In conjunction with recent high
Jan 1, 2018
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Rock Reinforcement Longevity
By Francis S. Kendorski
Rock reinforcement has been in widespread use and generally has been accepted in underground mining and tunneling since the 1950s. The first rock reinforcement technologies employed were mechanical an
Jan 1, 2000
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Review Of Pillar Design Equations Including The Effects Of Constraint
By C. Babcock
This Bureau of Mines report considers some equations for mine pillar design from 1833 to the present. Most of the equations are of essentially the same kind, using pillar width to height relationships
Jan 1, 1981
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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
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Improving Roof Control At A South African Coal Mine
By Alan Bugden
Goedehoop Colliery produces 8 million tonnes of coal a year, principally from room and pillar mining, and is situated in the Witbank Coalfield in the Republic of South Africa. The mine has a long and
Jan 1, 2001
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The Impact Factors of Overburden Movement in Longwall Mining of Shallow Coal Seams
By Yang Li
For the study of overburden movement in longwall mining of shallow coal seams, most scholars merely consider the thickness of bedrock and top soils. In this paper, the overburden movement in longwall
Jan 1, 2014
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Fiber Reinforced Polymer Rockbolts for Ground Control in a Strong Jointed Rock Mass
By Samrat Mohanty
The construction of underground hydrocarbon storage caverns in Jurong Island, Singapore, is nearing completion. The facility, located beneath the seabed of Banyan Basin, is comprised of five storage
Jan 1, 2014