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| Numerical Simulation of Anchorage Mechanism of Bolts under Different Loads Based on FLAC3D |
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Received:October 26, 2018
Revised:November 01, 2018
Accepted:November 26, 2018
Published Online:December 24, 2019
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| KeyWord:anchor; grouting; surrounding rock; drawing; shear; three-dimensional numerical simulation |
| Author | Institution |
| Ma Xuebin |
Kunming University of Science and Technology |
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| Abstract: |
| In this paper, a copper mine is used as the research background. The basic parameters of rock physics are obtained by field investigation and sampling, and the rock samples are processed into shear tests and point load experiments. The numerical simulation of the anchoring effect of the bolt by the finite element software flac3d simulates the stress distribution law of the anchor along the anchor and the distribution of the anchor stress under different conditions of the anchor. The distribution law of anchoring force and shear stress along the anchorage length is obtained, which provides a theoretical basis for rational design of anchorage length. In this paper, the stress distribution law and the maximum bearing capacity of the interface are obtained by numerical simulation of the interface between the anchor-grouting body and the surrounding rock mass. The research results in this paper not only help to understand the mechanical properties of the anchored rock mass, but also provide a strong experimental data and theoretical basis for the design of a reliable and effective rock mass anchoring scheme. |
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