Design of the jointed roof in stratified rock based on the voussoir beam mechanism

Abstract
Mining practice and research have shown that the jointed roof in stratified rock behaves like a voussoir beam structure with strength greater than that determined by the continuous beam theory. Previous studies have demonstrated the voussoir beam mechanism and developed methods to estimate the crushing and buckling strength of voussoir beams. However, research on voussoir beams with multiple mid joints has not been sufficient and problems such as the voussoir beam support and applications of the voussoir beam mechanism to the mining environment have not been addressed. In this paper, mechanism of voussoir beams containing multiple mid joints and truss support are studied and applications of the voussoir beam mechanism to underground mine openings are discussed based on the numerical and experimental results.
Keywords: Rock mechanics, Voussoir beams.
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Summary: Development of the unique Mine Games exhibition at Science World British Columbia is the largest ever collaboration of many interests to present the story of mining and the issues of mineral development delivered to the public by a science education centre.
Publication: CIM Bulletin
Author(s): Gordon Thompson
Keywords: Education, Mine Games.
Issue: 994
Volume: 88
Year: 1995
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Summary: INCO Limited purchased a custom designed mobile hoist rope winder/tensioner in 1988 from Timberland Equipment Limited to handle large hoist ropes and serve as an emergency hoist. This paper describes the operation of the winder/tensioner and some of the different applications that the machine has been used to handle large loads.
Publication: CIM Bulletin
Author(s): INCO Limited purchased a custom designed mobile hoist rope winder/tensioner in 1988 from Timberland Equipment Limited to handle large hoist ropes and serve as an emergency hoist. This paper describes the operation of the winder/tensioner and some of the
Keywords: Equipment, Hoisting.
Issue: 994
Volume: 88
Year: 1995
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Summary: The Bathurst area has recorded mining production as early as 1837, although the bulk of the production has come in recent years. Production has been mainly from the well-known massive sulphide deposits, but vein, gossan, and a variety of other deposits have also been mined. This paper summarizes the history of the mined deposits, along with tonnages and grades produced.
A number of "firsts" have been noted in the Bathurst area. The A Zone deposit, located in the Heath Steele area,...
Publication: CIM Bulletin
Author(s): William M. Luff
Keywords: Bathurst area, History, Massive sulphide deposits, New Brunswick, Production.
Issue: 994
Volume: 88
Year: 1995
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Summary: Westmin Resources Ltd. operates the 3300 TPD H-W underground copper/zinc mine on Vancouver Island. Ore storage underground is handled in a 6000 tonne coarse ore bin and a 3000 tonne fine ore bin. Both of these bins have experienced significant wear since excavation and construction in 1985. Wear problems have included both deteriorating rock walls as well as worn out steel liners and concrete at the discharge points from the bins. Extensive rehabilitation work was completed in 1993.
The basis...
Publication: CIM Bulletin
Author(s): K. Reipas
Keywords: Ore handling systems, Storage bins, Tekfoam safety bulkheads, Underground mining.
Issue: 994
Volume: 88
Year: 1995
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Summary: This paper outlines the implementation of the Mechanic's Stethoscope from the earliest stages of development to the implementation at Brunswick Mining and Smelting. It details the cooperative efforts of personnel at Noranda Technology Centre (NTC) and Brunswick Mining & Smelting (BMS) during the technology transfer of the Mechanic's Stethoscope. It demonstrates how everyone worked toward a goal of developing a product that is accepted as a useful addition to the work environment.
The...
Publication: CIM Bulletin
Author(s): Louis Fauteux, Andrew Dasys, Philippe Gaultier, Ralph Johnson
Keywords: Equipment, Mechanic's Stethoscope, Stethoscope, Underground mining, Diagnostic systems, Computer technology.
Issue: 994
Volume: 88
Year: 1995
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