Station excavation into a production shaft

Abstract
In March 1993, Ram Raising Limited was faced with a challenge. Placer Dome Incorporated, Dome Mine Division, requested from Ram Raising that they design station excavation into the existing No. 8 shaft from No. 3 mine levels. This work had to be done without loss of production time in the underground department.
Due to the time frame of the project, every detail had to be carefully considered, with extra care that all pros and cons had been worked out.
Ram Raising submitted a work plan that had been worked out with the Redpath Group which included the infrastructure requirements; the engineering design; the scheduling and sequence of work; and the excavation design and blasting procedures.
A proposal was put together by both Ram Raising and Placer Dome outlining the infrastructure requirements, including the engineering design, scheduling and sequence of the work, excavation design and blasting procedures. The proposal was accepted by Placer Dome and, on July 30, 1993 work commenced to breakthrough eight stations. Work continued until December 1993 with the completion of four stations. The project was then stopped to allow the station access drifts from No. 3 mine to be completed. The second phase of the project began on May 27 and was completed on September 15, 1994.
This paper shows how, through innovative design and the full cooperation between client and contractor, a project of this nature can be completed successfully.
Keywords: Underground mining, Excavation underground, Mine design.
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Summary: The last edition of lay. Notes expressed concern about two proposed tax changes in Finance Minister Paul Martin's 1995 budget that could have detrimental effects on Canada's mining industry. This month, Tax Notes expands on these concerns. This article is based on a paper that the author presented at CIM '95 in Halifax.
Publication: CIM Bulletin
Author(s): Robert B. Parsons
Issue: 990
Volume: 88
Year: 1995
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Summary: Friction winders and double drum winders have been used in the vertical shaft mining industry for over 100 years. In that time, there have been many changes made in the electronic and mechanical fields of hoisting, but few changes made in the manufacturing and performance of steel wire rope, until recently.
In the past ten years, with the advent of high polymer thermoplastics, the industry has seen some major advancements in steel wire rope. By incorporating a polymer with steel, improvement...
Publication: CIM Bulletin
Author(s): Bill Parnell
Keywords: Hoist rope, Improvement
Issue: 990
Volume: 88
Year: 1995
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Summary: Place Dome Canada's Detour Lake Mine is a low-grade gold producer located in northeastern Ontario. Production is targeted for 2850 tonnes of ore per day. As reserves and mining areas continued to be found below and far to the west of the shaft (Fig. 1), it became necessary to review and upgrade the materials handling facilities. This paper deals with the selection, design and construction of an underground crusher and conveyor system capable of handling up to 450 tonnes per hour from the...
Publication: CIM Bulletin
Author(s): P. Hansman
Keywords: Conveyor systems, Detour Lake Mine.
Issue: 990
Volume: 88
Year: 1995
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Summary: This paper reviews the evolution of Canadian surface and underground mining automation, principally relating to: advances in communications, initial development of machine teleoperation from line-of-sight remote control, and islands of automation. The eventual role of telerobotics and minewide robotic mining remains to be resolved. The progress and approaches adopted have tended to vary within each sector of the mining industry. Recent information technology advances have made possible the...
Publication: CIM Bulletin
Author(s): Malcolm Scoble
Keywords: Automation, Teleoperation, Robotics, Digital mine, Communications.
Issue: 990
Volume: 88
Year: 1995
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Summary: The most commonly used tendon supports in the Sudbury area include rock bolts, rebars, friction anchors and cable bolts. Due to the fact that these tendons are physically different and employ different anchoring systems they offer varying degrees of stiffness, yield ability, load capacity, anchor dependability and energy absorption. These differences coupled with variable rock mass and changing stress conditions have made it challenging to engineer the design of an effective support system....
Publication: CIM Bulletin
Author(s): Brian O'Hearn, Doug Hanson
Keywords: Rock mechanics, Support systems, Rock mass characteristics.
Issue: 990
Volume: 88
Year: 1995
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Summary: Advances in our knowledge of the petrochemical attributes of deposit environments and of the character and extent ofhydrother-mal systems associated with certain deposit types has resulted in increased application of lithogeochemistry to exploration programs. Lithogeochemistry can be used to vector an exploration program toward an area of high potential through the use of a series of collapsing scales of analysis from a tectonic subprovince down to a particular stratigraphic segment. In the...
Publication: CIM Bulletin
Author(s): Alan G. Galley
Keywords: Exploration, Lithogeochemistry, Target vectoring.
Issue: 990
Volume: 88
Year: 1995
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