Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)
Online ISSN : 2185-6516
ISSN-L : 2185-6516
Paper (In Japanese)
EVALUATION OF REINFORCING EFFECT ON FACEBOLTS FOR TUNNELING USING X-RAY CT AND CENTRIFUGE MODEL TEST
Daiki TAKANOJun OTANIKensuke DATEYasuhiro YOKOTHideki NAGATANI
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2011 Volume 67 Issue 1 Pages 107-118

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Abstract

 The purpose of this paper is firstly to simulate the tunnel face failure in laboratory with four cases of model tests by pulling out tunnel model from a sandy ground that are without using auxiliary method nor facebolts and using facebolts with three different lengths of bolts, and secondary, to investigate the behavior of model ground using X-ray computed tomography (CT) scanner to visualize the failure zone in three dimensions. In addition to those results, a series of centrifuge model tests are conducted to confirm the results of X-ray CT test and also to discuss the ground behavior under full scale stress level. Finally, the effect of face bolting method is evaluated based on all the test results.

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© 2011 by Japan Society of Civil Engineers
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