Doboku Gakkai Ronbunshuu C
Online ISSN : 1880-604X
ISSN-L : 1880-604X
Technical Note (In Japanese)
NUMERICAL INVESTIGATION INTO EFFECTS OF LONG FACEBOLTING ON THE PREVENTION OF GROUND SURFACE SETTLEMENT
Isamu OHTSUKA, Tomoyuki AOKI, Tatsuo OHMACHI, Hiroshi ITO
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Keywords: facebolting, rock reinforcement, ground surface settlement, three-demensional excavation analysis, strength parameters
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2006 Volume 62 Issue 1 Pages 151-156

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Abstract
Long facebolting, as an auxiliary method in mountain tunneling, is used not only for the measure of face stabilization but also for the measure of preventing surface settlement. In this paper, the mechanism of preventing the surface settlement by means of long facebolting is investigated for shallow tunnels using three-dimensional numerical analysis. It is found that the facebolting words effectively in sandy ground resulting from the confining stresses in the ground ahead of face reinforced with the long facebolts.
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© 2006 by Japan Society of Civil Engineers
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Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)

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