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Further Improvements In The Roof Beam Tilt Method Of Gateroad Support Design
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Citation (Style = APA)
Cain, Peter (1993). Further Improvements In The Roof Beam Tilt Method Of Gateroad Support Design. Proceedings of 12th International Conference on Ground Control in Mining
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Cain, Peter (1993). Further Improvements In The Roof Beam Tilt Method Of Gateroad Support Design. Proceedings of 12th International Conference on Ground Control in Mining
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 11
Publication Date:
Jan 1, 1993
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Abstract
Abstract
| Twenty years of research into the design of permanent gateroad support (packs) in coal mines have resulted in two methods of pack design based on engineering principles. The first, the detached block concept, is based on static loading of the support system by an hypothetical detached block. The second, the roof beam tilt concept, is based on the dynamic loading of the support system as the roof beam tilts over the roadway about a pivot point located in the rib-side. The roof beam tilt concept has been used on a number of occasions to design packs in a variety of conditions. However, recent work in the Sydney Coalfield of Cape Breton Island, Nova Scotia, has shown that design criteria based on the roof beam tilt concept in its present state of development are far from universal in application. After a review of published pack performance data, including detailed studies conducted in the UK, France and Canada, it was found that consideration of the mechanical properties of the roof beam produced a design criterion that fitted the available data. Modifications to the design process using the roof beam tilt concept are suggested for use in pack design. The work also revealed that current research in other aspects of coal mine ground control, particularly the areas of powered support design and subsidence prediction, may provide valuable information leading to major advances in this field. Such developments could also extend the application of the roof beam tilt concept to the design of pillar systems. |
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