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http://dx.doi.org/10.7843/kgs.2006.22.10.131

Laboratory and Numerical Simulation About the Installation Angle of Face Bolts  

Seo, Kyoung-Won (Korea Institute of Construction Technology)
Nishimura, Kazuo (Tokyo Metropolitan Univ.)
Kim, Kwang-Yeom (Korea Institute of Construction Technology)
Kim, Chang-Young (Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.22, no.10, 2006 , pp. 131-138 More about this Journal
Abstract
A face bolt is normally horizontally installed. However, it often deviates from the initial horizontal position. The reinforcement effect of face bolts by its installation angle is analysed in this study. For the purpose of preventing surface subsidence and horizontal displacement of face, the face bolt should be installed as horizontally as possible, and if it deviates from the initial position, more bolts should be installed. Also, the residual face bolt left behind the face due to its installation angle has little supportive effect because it its too short and radially arranged.
Keywords
Axial force; Face bolt; Installation angle; Laboratory test;
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