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Proceedings Paper

The implementation of the full length rockbolt in DDA method
Author(s): Chun-mei Zheng; Wei-shen Zhu; Lei Zhang
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Paper Abstract

The discontinuous deformation analysis (DDA), proposed by Shi, is a powerful numerical method that can be used for modeling rock-structure interaction. The method is only capable of modeling the point anchoring rockbolt. To reflect the deformation mechanism of rockbolt nearby the fracture surface and the interaction between the rockbolt and the fracture surface, the paper presents the simulation of the full length rockbolt to the DDA method. It is assumed that the rockbolt has no deformation in rock mass and its restriction effect on the fracture surface can only be considered. The full length rockbolt has been implemented by applying normal and tangential springs to the fracture surfaces. A tunnel was modeled to evaluate the influence of reinforcement on the tunnel stability by using the extended DDA method. The simulation results indicate that the modified discontinuous deformation analysis (DDA) method is effective for the reinforcement of tunnel. It is shown that the modified discontinuous deformation analysis (DDA) method is reasonable and correct.

Paper Details

Date Published: 15 April 2010
PDF: 7 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75226E (15 April 2010); doi: 10.1117/12.849195
Show Author Affiliations
Chun-mei Zheng, Shandong Univ. (China)
Wei-shen Zhu, Shandong Univ. (China)
Lei Zhang, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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