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Alimak narrow vein mining at the Dome Mine
55A Mines See also: 911275. 911320, 911322, 911327
911428 Cannon Mine's B-Neath zone - exploration through production Baz-Dresch, J J CIM Bull V83, N938, June 1990, 1'43-48
The B-Neath zone is a narrow, downward extension of the main orebody, and is reasonably competent but surrounded by very weak rock. It was developed while other areas of the mine were actively producing. Data for stope planning came from cores, diamond drilling, and examination of contiguous producing zones. Mine layout was designed using 2D (MINAP) and 3D (EXPAREA) boundary element programs. A rock mechanics program is used to monitor reaction of rock to mining and warn of impending problems.
911429 AOSTRA underground test facility: progress and potential Haston, J A; Luhning, R W; Gittins, S D CIM Bull V83, N938, June 1990, 1'53-58
The Alberta Oil Sands Technology and Research Authority (AOSTRA) UTF project has achieved successful in situ recovery of bitumen from the Athabasca oil sands. Shafts were sunk down to a system of tunnels in the underlying limestone. From these tunnels, pairs of horizontal wells have been drilled into the oil sands. Steam injection into the upper well decreases viscosity of the bitumen, which flows by gravity to be collected in the lower well. Design, operation and economics are described.
911430 Alimak narrow vein mining at the Dome Mine Robertson, B E; Vehkala, J T; Kerr, S S CIM Bull V83, N938, June 1990, P63-66
An Alimak Raise Climber was used to construct drilling and inspection raises at the 2239 No 17 stope at Dome Mine, with a steeply dipping ankerite orebody of approximate thickness 300ram. The flexibility of the Alimak system allowed the raise crews to closely follow the undulating hanging wall of the vein. Extraction is by shrinkage stoping with ionghole drilling. Improved productivity, safety, and economics were achieved.
911431 Roof clalification and determination of the support capacity for the fully mechanized Iongwnil faces Peng, S S; Zhu, D R; Jiang, Y M J Miu Metal Fuel V37, N6/7, June-July 1989, P289-296
A statistical model to describe interaction between roof and support in longwall mining has been developed on the basis of field measurements. It relates effective increment in load density to effective setting load density and contains two regression constants, which are defined in terms of immediate roof thickness and uniaxial compressive strength, ratio of immediate roof to mining height, and type, thickness, and tensile strength of the main roof. It is used to classify roofs into 5 types, whose characteristics are discussed. A method to correlate roof conditions with support requirements is presented.
911432 High performance thick seam Iongwall support design Leitch, R D J Min Metal Fuel V37, N6/7, June-July 1989, P317-324
Few longwalls exceed 3.5m in height, and 4.5m is the practical limit. The problems to be overcome in designing support for single lift longwalling of 6m height are addressed. Stability, roof loading, protection from roof and waste flushing, immediate support, face sprags, support transport, and monitoring are discussed. Support systems for sub-level caving are also described.
911433 Considerations in the design and layout of pillar and rib pillar extraction panels Beukes, J S Proc Symposium on Advances in Rock Mechanics iu Underground Coal Miuiug, Witbank, 12 September 1989 P105-111. Publ Marshalltown: SANGORM, 1989
A lot of experience has been gained in stooping both by 'handgot' methods and by mechanised conventional equipment in South African coal mines. Due to the importance of increasing extraction, research has been conducted in order to understand factors that need to be considered when designing pillars and panels for total extraction. The outcome of this research and the bulk of knowledge gained by experience are discussed.
911434 Multiseam mining in South Africa Hill, R W Proe Symposium on Advatwes in Rock Met&talcs in Underground Coal Mimug, Witbank, 12 September 1989 P119-123. Publ Marshalltown: SANGORM, 1989
In order to maximise the percentage extraction in multiple seams with close vertical proximity, multiseam workings must be considered. The close proximity of the seams usually results in high stress concentrations which may lead to difficult mining conditions and thus impose restrictions on extraction methods and layouts. Current multiseam practices and some of the problems experienced due to remnant pillars and non superimposition of pillars are reviewed. Difficulties in the numerical modelling techniques are outlined.
911435 Computer applications in the coal industry and mining systems
engineering Miller, M S; Santos, C F Proc 7th Ammal Workskop Generic Mi~,rai Teclmology Center Mime Systems Desigu and Groand Control, Blacksburg, 22-24 October 1989 P69-80. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1989 A report on the status of computer applications in the coal industry, a summary on which computer applications are routinely and successfully utilized by the industry, and challenges remaining to the universities, government agencies and commercial software developers are outlined. Principal attention is given to exploration management, processing of reserve and mineability assessments, and a variety of other applications as applied to modern, high productivity mining.
© 1991 Pergamon Press pie. Reproduction not permitted
911428 Cannon Mine's B-Neath zone - exploration through production Baz-Dresch, J J CIM Bull V83, N938, June 1990, 1'43-48
The B-Neath zone is a narrow, downward extension of the main orebody, and is reasonably competent but surrounded by very weak rock. It was developed while other areas of the mine were actively producing. Data for stope planning came from cores, diamond drilling, and examination of contiguous producing zones. Mine layout was designed using 2D (MINAP) and 3D (EXPAREA) boundary element programs. A rock mechanics program is used to monitor reaction of rock to mining and warn of impending problems.
911429 AOSTRA underground test facility: progress and potential Haston, J A; Luhning, R W; Gittins, S D CIM Bull V83, N938, June 1990, 1'53-58
The Alberta Oil Sands Technology and Research Authority (AOSTRA) UTF project has achieved successful in situ recovery of bitumen from the Athabasca oil sands. Shafts were sunk down to a system of tunnels in the underlying limestone. From these tunnels, pairs of horizontal wells have been drilled into the oil sands. Steam injection into the upper well decreases viscosity of the bitumen, which flows by gravity to be collected in the lower well. Design, operation and economics are described.
911430 Alimak narrow vein mining at the Dome Mine Robertson, B E; Vehkala, J T; Kerr, S S CIM Bull V83, N938, June 1990, P63-66
An Alimak Raise Climber was used to construct drilling and inspection raises at the 2239 No 17 stope at Dome Mine, with a steeply dipping ankerite orebody of approximate thickness 300ram. The flexibility of the Alimak system allowed the raise crews to closely follow the undulating hanging wall of the vein. Extraction is by shrinkage stoping with ionghole drilling. Improved productivity, safety, and economics were achieved.
911431 Roof clalification and determination of the support capacity for the fully mechanized Iongwnil faces Peng, S S; Zhu, D R; Jiang, Y M J Miu Metal Fuel V37, N6/7, June-July 1989, P289-296
A statistical model to describe interaction between roof and support in longwall mining has been developed on the basis of field measurements. It relates effective increment in load density to effective setting load density and contains two regression constants, which are defined in terms of immediate roof thickness and uniaxial compressive strength, ratio of immediate roof to mining height, and type, thickness, and tensile strength of the main roof. It is used to classify roofs into 5 types, whose characteristics are discussed. A method to correlate roof conditions with support requirements is presented.
911432 High performance thick seam Iongwall support design Leitch, R D J Min Metal Fuel V37, N6/7, June-July 1989, P317-324
Few longwalls exceed 3.5m in height, and 4.5m is the practical limit. The problems to be overcome in designing support for single lift longwalling of 6m height are addressed. Stability, roof loading, protection from roof and waste flushing, immediate support, face sprags, support transport, and monitoring are discussed. Support systems for sub-level caving are also described.
911433 Considerations in the design and layout of pillar and rib pillar extraction panels Beukes, J S Proc Symposium on Advances in Rock Mechanics iu Underground Coal Miuiug, Witbank, 12 September 1989 P105-111. Publ Marshalltown: SANGORM, 1989
A lot of experience has been gained in stooping both by 'handgot' methods and by mechanised conventional equipment in South African coal mines. Due to the importance of increasing extraction, research has been conducted in order to understand factors that need to be considered when designing pillars and panels for total extraction. The outcome of this research and the bulk of knowledge gained by experience are discussed.
911434 Multiseam mining in South Africa Hill, R W Proe Symposium on Advatwes in Rock Met&talcs in Underground Coal Mimug, Witbank, 12 September 1989 P119-123. Publ Marshalltown: SANGORM, 1989
In order to maximise the percentage extraction in multiple seams with close vertical proximity, multiseam workings must be considered. The close proximity of the seams usually results in high stress concentrations which may lead to difficult mining conditions and thus impose restrictions on extraction methods and layouts. Current multiseam practices and some of the problems experienced due to remnant pillars and non superimposition of pillars are reviewed. Difficulties in the numerical modelling techniques are outlined.
911435 Computer applications in the coal industry and mining systems
engineering Miller, M S; Santos, C F Proc 7th Ammal Workskop Generic Mi~,rai Teclmology Center Mime Systems Desigu and Groand Control, Blacksburg, 22-24 October 1989 P69-80. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1989 A report on the status of computer applications in the coal industry, a summary on which computer applications are routinely and successfully utilized by the industry, and challenges remaining to the universities, government agencies and commercial software developers are outlined. Principal attention is given to exploration management, processing of reserve and mineability assessments, and a variety of other applications as applied to modern, high productivity mining.
© 1991 Pergamon Press pie. Reproduction not permitted