Effects of joints on the reinforced rock units of fully-grouted rockbolts
A rockbolt model has been implemented into the 2-dimensional discontinuous deformation analysis (DDA-2D) code to analyze the performance of the fully grouted rockbolts installed in the jointed rock mass. Parametric studies are also conducted to investigate the effects of the rock properties, joint o...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/141717 |
| _version_ | 1826112177590763520 |
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| author | Nie, Wen Zhao, Zhi Ye Ma, Shu Qi Guo, Wei |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Nie, Wen Zhao, Zhi Ye Ma, Shu Qi Guo, Wei |
| author_sort | Nie, Wen |
| collection | NTU |
| description | A rockbolt model has been implemented into the 2-dimensional discontinuous deformation analysis (DDA-2D) code to analyze the performance of the fully grouted rockbolts installed in the jointed rock mass. Parametric studies are also conducted to investigate the effects of the rock properties, joint orientations, rockbolt lengths and in-plane spacings. The numerical study shows that the reinforcement area of the reinforcement rock unit (RRU) could be used to optimize the design of the rockbolt. The RRU induced by single rockbolt is normally in a cone shape and restrained by the orientation of the discontinuities. The RRU induced by grouped rockbolts is heavily influenced by the joint orientations and the rockbolt spacing. The design of the in-plane rockbolt spacing has to consider the joints orientations. |
| first_indexed | 2024-10-01T03:02:42Z |
| format | Journal Article |
| id | ntu-10356/141717 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:02:42Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1417172020-06-10T04:26:51Z Effects of joints on the reinforced rock units of fully-grouted rockbolts Nie, Wen Zhao, Zhi Ye Ma, Shu Qi Guo, Wei School of Civil and Environmental Engineering Engineering::Civil engineering Fully Grouted Rockbolt Joint Dip Angle A rockbolt model has been implemented into the 2-dimensional discontinuous deformation analysis (DDA-2D) code to analyze the performance of the fully grouted rockbolts installed in the jointed rock mass. Parametric studies are also conducted to investigate the effects of the rock properties, joint orientations, rockbolt lengths and in-plane spacings. The numerical study shows that the reinforcement area of the reinforcement rock unit (RRU) could be used to optimize the design of the rockbolt. The RRU induced by single rockbolt is normally in a cone shape and restrained by the orientation of the discontinuities. The RRU induced by grouped rockbolts is heavily influenced by the joint orientations and the rockbolt spacing. The design of the in-plane rockbolt spacing has to consider the joints orientations. 2020-06-10T04:26:51Z 2020-06-10T04:26:51Z 2017 Journal Article Nie, W., Zhao, Z. Y., Ma, S. Q., & Guo, W. (2018). Effects of joints on the reinforced rock units of fully-grouted rockbolts. Tunnelling and Underground Space Technology, 71, 15-26. doi:10.1016/j.tust.2017.07.005 0886-7798 https://hdl.handle.net/10356/141717 10.1016/j.tust.2017.07.005 2-s2.0-85027316177 71 15 26 en Tunnelling and Underground Space Technology © 2017 Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Fully Grouted Rockbolt Joint Dip Angle Nie, Wen Zhao, Zhi Ye Ma, Shu Qi Guo, Wei Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title | Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title_full | Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title_fullStr | Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title_full_unstemmed | Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title_short | Effects of joints on the reinforced rock units of fully-grouted rockbolts |
| title_sort | effects of joints on the reinforced rock units of fully grouted rockbolts |
| topic | Engineering::Civil engineering Fully Grouted Rockbolt Joint Dip Angle |
| url | https://hdl.handle.net/10356/141717 |
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