Actions for Rock support of the L3 experimental hall complex [electronic resource].

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Rock support of the L3 experimental hall complex [electronic resource].

Published
Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (10 pages) : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Energy Research and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The methods of excavation and support selected for the LEP works are discussed in this paper. The excavation of the halls and chambers in discrete passes, from the roof down, and their temporary support by patterned fully bonded rock bolts and shotcrete ensured that mass deformations were contained. When working in soft rock materials where discontinuity, elastic and possibly plastic deformations may each play an important role in the overall rock structure stability, it is of paramount importance to systematically monitor the behavior of the rock in-situ. The use of instrumentation to indicate location, direction, levels, and rate of movement is essential to ensure that a safe, efficient and economical mining operation can be undertaken, and that any remedial action will be taken at the appropriate time. The use of the New Austrian Tunneling support mechanisms allowed the engineer greater flexibility in handling local reinforcement of the rock structure if superficial or relatively deep-seated instability was encountered. However, in the case where second linings are to be accommodated and flexible support mechanisms used, care should be taken to foresee over-excavation in weaker zones to allow for larger displacements prior to the attainment of confinement-convergence equilibria. 4 refs., 7 figs.
Report Numbers
E 1.99:sscl-318
E 1.99: conf-9006120--5
conf-9006120--5
sscl-318
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/1990.
"sscl-318"
" conf-9006120--5"
"DE91004960"
International symposium on unique underground structures, Denver, CO (USA), 12-15 Jun 1990.
Laughton, C.
Superconducting Super Collider Lab., Dallas, TX (USA)
Funding Information
AC02-89ER40486
View MARC record | catkey: 14694803