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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 85 - 91 (7page)
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Rock bolts are used as permanent and temporary support systems in tunneling and mining operations. A dynamic-expansion rock bolt system that can be installed rapidly in a drilled hole is introduced in this article. The dynamic-expansion rock bolt system consists of a star-shaped steel tube and an ignition system with a dynamic expansion agent in the steel tube of the rock bolt. After the ignition of the dynamic agent in the tube, the star-shaped steel tube expands dynamically as a result of gas production by the dynamic agent. This expansion leads to frictional mounting of the tube in a drilled hole. Laboratoryscale pull-out tests of the rock bolt, installed in a thick steel tube, were performed to investigate the friction behavior between the steel tube and the smooth wall of a drilled hole. These tests revealed that the ultimate pull-out load reached approximately 6 kN and that a long displacement subsequently occurred. Field-scale tests for two prototype rock bolts were performed to evaluate the pull-out load-bearing capacity of the rock bolt. The welded areas of the two tube bolts were broken when the pull-out loads reached approximately 114 and 91 kN.
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참고문헌 (8)
참고문헌 신청
Divi, S. / 2011 / Corrosion susceptibility of potential rock bolts in aerated muti-ionic simulated concentrated water / Tunnelling and Underground Space Technology 26:124~129
Grasselli, G. / 2005 / 3D behaviour of bolted rock joints:Experimental and numerical study / International Journal of Rock Mechanics and Mining Sciences 42:13~24
한상현 / 2007 / 장대록볼트 정착방식에 따른 인발거동특성 사례연구 / 지질공학 17(1):65~73
Jeong, Y. Y. / 2013 / Development of new type expansion rock bolt. In Earth science and technology symposium :14~17
Jeong, Y. Y. / 2013 / Development of dynamic expansion rock bolt system for rapid installation and active mechanical interlocking in rocks / Tunnelling and underground space construction for sustainable development symposium :139
Grasselli, G. / 2005 / 3D behaviour of bolted rock joints:Experimental and numerical study / International Journal of Rock Mechanics and Mining Sciences 42:13~24
한상현 / 2007 / 장대록볼트 정착방식에 따른 인발거동특성 사례연구 / 지질공학 17(1):65~73
Jeong, Y. Y. / 2013 / Development of new type expansion rock bolt. In Earth science and technology symposium :14~17
Jeong, Y. Y. / 2013 / Development of dynamic expansion rock bolt system for rapid installation and active mechanical interlocking in rocks / Tunnelling and underground space construction for sustainable development symposium :139
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