Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel
The presence of a concealed karst cave above a deep highway tunnel may cause the collapse of the rock mass between the karst cave and tunnel during excavation. Rock mass collapse threatens the safety of tunnel construction personnel. A prediction method of the collapse region induced by a concealed...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8825262 |
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| _version_ | 1832567464597127168 |
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| author | Fu Huang Di Wang Yuan Feng Min Zhang |
| author_facet | Fu Huang Di Wang Yuan Feng Min Zhang |
| author_sort | Fu Huang |
| collection | DOAJ |
| description | The presence of a concealed karst cave above a deep highway tunnel may cause the collapse of the rock mass between the karst cave and tunnel during excavation. Rock mass collapse threatens the safety of tunnel construction personnel. A prediction method of the collapse region induced by a concealed karst cave above a deep highway tunnel is proposed on the basis of the upper bound theorem of limit analysis. An analytical expression of the collapse surface is derived from the variational principle. Using the analytical expression of the collapse surface, the shapes of the collapse surfaces are plotted for different rock mass parameters. Moreover, the minimum safe distance between the karst cave and tunnel is defined, and the computational equation of the minimum safe distance is derived. The proposed method is applied in a highway tunnel excavated in a karst terrain as a case study. Based on geological survey report parameters, the shape of the collapse surface and the minimum safe distance between the karst cave and tunnel are obtained. Finally, the collapse surface of the rock mass provided by the proposed approach is compared with that provided by numerical simulation, and the favorable result comparison shows that the proposed method is valid. |
| format | Article |
| id | doaj-art-9d2eeeb7d97f4fe395cde50df0d63633 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-9d2eeeb7d97f4fe395cde50df0d636332025-02-03T01:01:28ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88252628825262Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway TunnelFu Huang0Di Wang1Yuan Feng2Min Zhang3School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, ChinaThe presence of a concealed karst cave above a deep highway tunnel may cause the collapse of the rock mass between the karst cave and tunnel during excavation. Rock mass collapse threatens the safety of tunnel construction personnel. A prediction method of the collapse region induced by a concealed karst cave above a deep highway tunnel is proposed on the basis of the upper bound theorem of limit analysis. An analytical expression of the collapse surface is derived from the variational principle. Using the analytical expression of the collapse surface, the shapes of the collapse surfaces are plotted for different rock mass parameters. Moreover, the minimum safe distance between the karst cave and tunnel is defined, and the computational equation of the minimum safe distance is derived. The proposed method is applied in a highway tunnel excavated in a karst terrain as a case study. Based on geological survey report parameters, the shape of the collapse surface and the minimum safe distance between the karst cave and tunnel are obtained. Finally, the collapse surface of the rock mass provided by the proposed approach is compared with that provided by numerical simulation, and the favorable result comparison shows that the proposed method is valid.http://dx.doi.org/10.1155/2020/8825262 |
| spellingShingle | Fu Huang Di Wang Yuan Feng Min Zhang Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel Advances in Civil Engineering |
| title | Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel |
| title_full | Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel |
| title_fullStr | Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel |
| title_full_unstemmed | Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel |
| title_short | Prediction of the Collapse Region Induced by a Concealed Karst Cave above a Deep Highway Tunnel |
| title_sort | prediction of the collapse region induced by a concealed karst cave above a deep highway tunnel |
| url | http://dx.doi.org/10.1155/2020/8825262 |
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