EFFECT OF TIME-DEPENDENT PROPERTIES OF ALTERED ROCK ON TUNNEL SUPPORT REQUIREMENTS.

R. M. Semple, A. J. Hendron, G. Mesri

Research output: Contribution to journalArticle

Abstract

Squeezing ground conditions in hard-rock tunneling are associated with fault zones containing brecciated rock and gouge. The time-dependent nature of the deformation and support loads in squeezing ground conditions suggest that the creep behavior of fault gouge is the significant engineering property controlling the in situ behavior. An experimental and analytical study is presented that deals with soil creep and its application to the prediction of tunnel support requirements in squeezing ground. A simple creep equation is developed that adequately describes the deformation of fault gouge with respect to applied stress and time.

Original languageEnglish (US)
JournalDep of Transp, Fed Railroad Adm, Final Rep FRA-ORDD-74-30
StatePublished - Jan 1 1973
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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