Numerical evaluation of new Austrian tunneling method excavation sequences: a case study
The main aspects that require attention in tunnel design in terms of safety and economy are the precise estimation of probable ground conditions and ground behavior during construction. The variation in rock mass behavior due to tunnel excavation sequence plays an important role during the construct...
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| Format: | Article |
| Language: | English |
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China University of Mining and Technology
2020
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| Online Access: | http://eprints.utm.my/87765/1/YouHankyu2020_NumericalEvaluationofNewAustrianTunneling.pdf |
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| author | Rehman, H. Naji, A. M. Ali, W. Junaid, M. Abdullah, R. A. Yoo, H. K. |
| author_facet | Rehman, H. Naji, A. M. Ali, W. Junaid, M. Abdullah, R. A. Yoo, H. K. |
| author_sort | Rehman, H. |
| collection | ePrints |
| description | The main aspects that require attention in tunnel design in terms of safety and economy are the precise estimation of probable ground conditions and ground behavior during construction. The variation in rock mass behavior due to tunnel excavation sequence plays an important role during the construction stage. The purpose of this research is to numerically evaluate the effect of excavation sequence on the ground behavior for the Lowari tunnel project, Pakistan. For the tunnel stability, the ground behavior observed during the actual partial face excavation sequence is compared with the top heading and bench excavation sequence. For this purpose, the intact rock parameters are used along with the characterization of rock mass joints related parameters to provide input for numerical modelling via FLAC 2D. The in-situ stresses for the numerical modelling are obtained using empirical equations. From the comparison of the two excavation sequences, it was observed that the actual excavation sequence used for Lowari tunnel construction utilized more support than the top heading and bench method. However, the actual excavation sequence provided good results in terms of stability. |
| first_indexed | 2024-03-05T20:42:54Z |
| format | Article |
| id | utm.eprints-87765 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:42:54Z |
| publishDate | 2020 |
| publisher | China University of Mining and Technology |
| record_format | dspace |
| spelling | utm.eprints-877652021-03-04T03:58:53Z http://eprints.utm.my/87765/ Numerical evaluation of new Austrian tunneling method excavation sequences: a case study Rehman, H. Naji, A. M. Ali, W. Junaid, M. Abdullah, R. A. Yoo, H. K. TA Engineering (General). Civil engineering (General) The main aspects that require attention in tunnel design in terms of safety and economy are the precise estimation of probable ground conditions and ground behavior during construction. The variation in rock mass behavior due to tunnel excavation sequence plays an important role during the construction stage. The purpose of this research is to numerically evaluate the effect of excavation sequence on the ground behavior for the Lowari tunnel project, Pakistan. For the tunnel stability, the ground behavior observed during the actual partial face excavation sequence is compared with the top heading and bench excavation sequence. For this purpose, the intact rock parameters are used along with the characterization of rock mass joints related parameters to provide input for numerical modelling via FLAC 2D. The in-situ stresses for the numerical modelling are obtained using empirical equations. From the comparison of the two excavation sequences, it was observed that the actual excavation sequence used for Lowari tunnel construction utilized more support than the top heading and bench method. However, the actual excavation sequence provided good results in terms of stability. China University of Mining and Technology 2020-05 Article PeerReviewed application/pdf en http://eprints.utm.my/87765/1/YouHankyu2020_NumericalEvaluationofNewAustrianTunneling.pdf Rehman, H. and Naji, A. M. and Ali, W. and Junaid, M. and Abdullah, R. A. and Yoo, H. K. (2020) Numerical evaluation of new Austrian tunneling method excavation sequences: a case study. International Journal of Mining Science and Technology, 30 (3). pp. 381-386. ISSN 2095-2686 http://www.dx.doi.org/10.1016/j.ijmst.2020.03.009 DOI: 10.1016/j.ijmst.2020.03.009 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Rehman, H. Naji, A. M. Ali, W. Junaid, M. Abdullah, R. A. Yoo, H. K. Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title | Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title_full | Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title_fullStr | Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title_full_unstemmed | Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title_short | Numerical evaluation of new Austrian tunneling method excavation sequences: a case study |
| title_sort | numerical evaluation of new austrian tunneling method excavation sequences a case study |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.utm.my/87765/1/YouHankyu2020_NumericalEvaluationofNewAustrianTunneling.pdf |
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