Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions
Based on the similarity simulation theory, a parallel-tunnel model test system was constructed that consists of a test bench design, a monitoring system design, a loading system design, and the construction of a rock mass model. The models were monitored in key positions of displacement, stress chan...
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| Format: | Article |
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Science Press
2017-05-01
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| Series: | 工程科学学报 |
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| Online Access: | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2017.05.018 |
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| author | ZHAO Yu-song GAO Yong-tao SONG Wei-chao |
| author_facet | ZHAO Yu-song GAO Yong-tao SONG Wei-chao |
| author_sort | ZHAO Yu-song |
| collection | DOAJ |
| description | Based on the similarity simulation theory, a parallel-tunnel model test system was constructed that consists of a test bench design, a monitoring system design, a loading system design, and the construction of a rock mass model. The models were monitored in key positions of displacement, stress changes, and destruction of the tunnel walls. It is found that the experimental observation and numerical simulation results based on the Mohr-Coulomb model exhibit relatively large disparities. However, based on the Plastic-Hardening model, the yield states and variation laws of the rock and soil were obtained by numerical simulation and these results are in good agreement with the experimental results. If all aspects of research results is integrated, the Plastic-Hardening model accurately reflects real changes in the states of the rock and soil in actual engineering applications and tests and can provide an important reference for double parallel-tunnel construction and maintenance under similar geological conditions. |
| format | Article |
| id | doaj-art-0d7ad93489684b8ea337a8ea7cc6fab0 |
| institution | OA Journals |
| issn | 2095-9389 |
| language | zho |
| publishDate | 2017-05-01 |
| publisher | Science Press |
| record_format | Article |
| series | 工程科学学报 |
| spelling | doaj-art-0d7ad93489684b8ea337a8ea7cc6fab02025-08-20T01:47:54ZzhoScience Press工程科学学报2095-93892017-05-0139578679310.13374/j.issn2095-9389.2017.05.018Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditionsZHAO Yu-songGAO Yong-taoSONG Wei-chaoBased on the similarity simulation theory, a parallel-tunnel model test system was constructed that consists of a test bench design, a monitoring system design, a loading system design, and the construction of a rock mass model. The models were monitored in key positions of displacement, stress changes, and destruction of the tunnel walls. It is found that the experimental observation and numerical simulation results based on the Mohr-Coulomb model exhibit relatively large disparities. However, based on the Plastic-Hardening model, the yield states and variation laws of the rock and soil were obtained by numerical simulation and these results are in good agreement with the experimental results. If all aspects of research results is integrated, the Plastic-Hardening model accurately reflects real changes in the states of the rock and soil in actual engineering applications and tests and can provide an important reference for double parallel-tunnel construction and maintenance under similar geological conditions.http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2017.05.018double parallel tunnelsimilar material modelmohr-coulomb modelflac3dplastic-hardening modelflac |
| spellingShingle | ZHAO Yu-song GAO Yong-tao SONG Wei-chao Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions 工程科学学报 double parallel tunnel similar material model mohr-coulomb model flac3d plastic-hardening model flac |
| title | Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions |
| title_full | Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions |
| title_fullStr | Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions |
| title_full_unstemmed | Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions |
| title_short | Similarity model test and numerical simulation of double parallel-tunnel excavation in hard rock under high ground-stress conditions |
| title_sort | similarity model test and numerical simulation of double parallel tunnel excavation in hard rock under high ground stress conditions |
| topic | double parallel tunnel similar material model mohr-coulomb model flac3d plastic-hardening model flac |
| url | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2017.05.018 |
| work_keys_str_mv | AT zhaoyusong similaritymodeltestandnumericalsimulationofdoubleparalleltunnelexcavationinhardrockunderhighgroundstressconditions AT gaoyongtao similaritymodeltestandnumericalsimulationofdoubleparalleltunnelexcavationinhardrockunderhighgroundstressconditions AT songweichao similaritymodeltestandnumericalsimulationofdoubleparalleltunnelexcavationinhardrockunderhighgroundstressconditions |