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A Case Study on Tensile Behavior Characteristics of Long-length Rockbolt for Anchoring Systems  

Han, Sang-Hyun (Department of Civil Engineering, Seoil College)
Yea, Geu-Guwen (R&D Division, Sambu Construction Co., Ltd.)
Publication Information
The Journal of Engineering Geology / v.17, no.1, 2007 , pp. 65-73 More about this Journal
Abstract
Recently, large-scale underground cavern such as underground hydraulic-power plant tend to be constructed very largely, so long-length rock bolt are generally used to support the huge plastic zone. However, problems fur bend-ing shape of the long-length steel bar and the bonding effects of anchoring systems are caused during the construction of the long-length rock bolt. In this study, field pull-out test for long-length rock bolt are carried out to estimate the most efficient anchoring system among the saw-toothed shape, grooved shape and smoothed shape with each 6 shells for 5.0m, 7.5m, 10.0m, 15.0m length. The axial load and axial displacement are measured with each load stage and than test results are analyzed to evaluate the behavior characteristics for each anchoring systems of long-length rock bolt. Also, the improvements of anchoring systems are proposed and discussed in this paper.
Keywords
long-length rock bolt; anchoring system; pullout test; load; displacement;
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  • Reference
1 Singh, R. N., 1985, Private Communication, University of Nottingham, Dept. of Mining Engineering, Nottingham, England
2 이연규, 이정인, 조태진, 1995, 굴착과정에서 록볼트로 보강된 절리암반의 점소성 거동분석, 한국암반공학회, Vol 5, pp.123-133
3 Ludvig, B., 1984, Shear tests on rock bolts, Proc. of the Int. Symposium on Rock Bolting, Abisko, Sweden
4 Bengt Stillborg, 1986, Professional Users Handbook For Rock Bolting, Series on Rock and Soil Mechanies, Vol. 15, pp.31-34
5 Bergbultforband I Sprucket Berg. Fortifikationsforvaltningen, Forskningsbyran, Rapport, Vol.121, No.3, Stockholm