Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model
Bimrocks have a block matrix structure that affects their characteristic complex geometric features and widely varying engineering properties. Volumetric block proportion (VBP) significantly affects the strength, extent of the plastic zone, and failure mode of bimrocks. VBP is an essential parameter...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-08-01
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| Series: | Underground Space |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2467967424001247 |
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| author | Zixin Zhao Guolong Zhu Xingliang Peng Fawu Wang |
| author_facet | Zixin Zhao Guolong Zhu Xingliang Peng Fawu Wang |
| author_sort | Zixin Zhao |
| collection | DOAJ |
| description | Bimrocks have a block matrix structure that affects their characteristic complex geometric features and widely varying engineering properties. Volumetric block proportion (VBP) significantly affects the strength, extent of the plastic zone, and failure mode of bimrocks. VBP is an essential parameter for evaluating bimrock mechanical properties. However, current unadjusted VBP estimations may have large errors that can exceed 100%. Obtaining more accurate VBP estimates at engineering sites is an ongoing problem that needs more attention. In this study, a tunneling-based bimrock model was constructed. The blocks were ellipsoidal, and their geometric features were designed to be changeable. Based on this model, the influence of bimrock block geometry features on the estimation of the VBP was explored. To reduce the estimation error of the VBP in the tunnel, correction factors corresponding to different geometrical features were proposed. The results of this study can help in estimating VBP more accurately in the field. The findings can also provide useful information for the tunnel construction. |
| format | Article |
| id | doaj-art-2fa5b2085a4c443c8a95b58b9f629f92 |
| institution | Kabale University |
| issn | 2467-9674 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Underground Space |
| spelling | doaj-art-2fa5b2085a4c443c8a95b58b9f629f922025-08-20T03:58:14ZengKeAi Communications Co., Ltd.Underground Space2467-96742025-08-0123234210.1016/j.undsp.2024.07.008Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock modelZixin Zhao0Guolong Zhu1Xingliang Peng2Fawu Wang3Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; International United Laboratory for Energy and Environment, Sanmenxia 472199, China; Corresponding author at: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China.Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, ChinaBimrocks have a block matrix structure that affects their characteristic complex geometric features and widely varying engineering properties. Volumetric block proportion (VBP) significantly affects the strength, extent of the plastic zone, and failure mode of bimrocks. VBP is an essential parameter for evaluating bimrock mechanical properties. However, current unadjusted VBP estimations may have large errors that can exceed 100%. Obtaining more accurate VBP estimates at engineering sites is an ongoing problem that needs more attention. In this study, a tunneling-based bimrock model was constructed. The blocks were ellipsoidal, and their geometric features were designed to be changeable. Based on this model, the influence of bimrock block geometry features on the estimation of the VBP was explored. To reduce the estimation error of the VBP in the tunnel, correction factors corresponding to different geometrical features were proposed. The results of this study can help in estimating VBP more accurately in the field. The findings can also provide useful information for the tunnel construction.http://www.sciencedirect.com/science/article/pii/S2467967424001247BimrockVolumetric block proportionGeometric featureTunnel |
| spellingShingle | Zixin Zhao Guolong Zhu Xingliang Peng Fawu Wang Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model Underground Space Bimrock Volumetric block proportion Geometric feature Tunnel |
| title | Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model |
| title_full | Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model |
| title_fullStr | Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model |
| title_full_unstemmed | Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model |
| title_short | Effect of block geometry on the estimation of low volumetric block proportions: A tunneling-based computer bimrock model |
| title_sort | effect of block geometry on the estimation of low volumetric block proportions a tunneling based computer bimrock model |
| topic | Bimrock Volumetric block proportion Geometric feature Tunnel |
| url | http://www.sciencedirect.com/science/article/pii/S2467967424001247 |
| work_keys_str_mv | AT zixinzhao effectofblockgeometryontheestimationoflowvolumetricblockproportionsatunnelingbasedcomputerbimrockmodel AT guolongzhu effectofblockgeometryontheestimationoflowvolumetricblockproportionsatunnelingbasedcomputerbimrockmodel AT xingliangpeng effectofblockgeometryontheestimationoflowvolumetricblockproportionsatunnelingbasedcomputerbimrockmodel AT fawuwang effectofblockgeometryontheestimationoflowvolumetricblockproportionsatunnelingbasedcomputerbimrockmodel |