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In situstrength criteria for tunnel design in highly-stressed rock masses

Authors
Journal
International Journal of Rock Mechanics and Mining Sciences
1365-1609
Publisher
Elsevier
Publication Date
Volume
35
Issue
3
Identifiers
DOI: 10.1016/s0148-9062(97)00302-1
Disciplines
  • Design

Abstract

Abstract The selection of rock mass strength parameters and the approach to assessing the mechanical and thermal-mechanical rock mass behaviour around tunnels are important aspects of designing underground openings for a spent nuclear fuel waste repository. This paper demonstrates how strength criteria based on in situ observations can be used to design stable underground openings in rock masses subjected to adverse stress conditions. The findings are based upon work conducted at AECL’s Underground Research Laboratory (URL) regarding rock mass strength around tunnels in sparsely fractured granite.

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