Design of large cuttings in jointed rock

The article presents a stability study on a very high cutting in a granitic gneiss, as part of the construction of a bypass in the French Pyrenees. The preliminary study highlighted questions as to the most appropriate method of designing the rock cuts, as such methods are not standardized in France...

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Bibliographic Details
Published in:Bulletin of engineering geology and the environment 2008-05, Vol.67 (2), p.227-235
Main Authors: Gasc-Barbier, M., Ballion, A., Virely, D.
Format: Article
Language:English
Subjects:
Bolting
Bolts
Chips
Design engineering
Discontinuity
Earth and Environmental Science
Earth Sciences
Foundations
Geoecology/Natural Processes
Geoengineering
Geotechnical Engineering & Applied Earth Sciences
Hydraulics
Mathematical models
Nature Conservation
Original Paper
Plugs
Rock
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Summary:The article presents a stability study on a very high cutting in a granitic gneiss, as part of the construction of a bypass in the French Pyrenees. The preliminary study highlighted questions as to the most appropriate method of designing the rock cuts, as such methods are not standardized in France. A temporary stop in the roadworks allowed a second study to be carried out based on a statistical analysis of the discontinuities of the site and better-developed modeling tools, including Resoblok. A comparative analysis of these methods and their results in terms of bolt sizing is presented, taking into account the difficulty of use of each method.
ISSN:1435-9529
1435-9537
DOI:10.1007/s10064-008-0127-4