한국지구물리탐사학회:학술대회논문집
- 2003.11a
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- Pages.122-128
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- 2003
Stress distribution in a passive fully grouted rock bolts
- Karanam U. M. Rao (Korea Institute of Geosciences and Mineral Resources(KIGAM)) ;
- Dasyapu S. K. (Department of Mining Engineering, Indian Institute of Technology)
- Published : 2003.11.01
Abstract
Rock bolts are widely used as a supplementary roof support system in hard-rock mining since a long time. Since the performance of fully grouted passive bolts depends on bond strength, in the present investigation extensive laboratory pull-out as well as push-out tests were conducted varying the bolt diameter, length and cement-water mixing ratios of grout. The load-displacement curves were developed and were verified with the numerical results obtained from finite element analysis using ALGOR software. Numerical models were validated for push-out tests and a detailed analysis was carried out to know the displacement, stress, strain distribution along the bolt.
Keywords