Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation
In evaluating the construction safety of the building in the subway tunnel using the cover-and-cut method, the main objective is to analyze the diaphragm wall, the central pillar, and the roof. This article conducted a blasting vibration test based on the background of the Guiyang Metro Line 3 proje...
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MDPI AG
2024-12-01
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| author | Yunhao Che Enan Chi |
| author_facet | Yunhao Che Enan Chi |
| author_sort | Yunhao Che |
| collection | DOAJ |
| description | In evaluating the construction safety of the building in the subway tunnel using the cover-and-cut method, the main objective is to analyze the diaphragm wall, the central pillar, and the roof. This article conducted a blasting vibration test based on the background of the Guiyang Metro Line 3 project and used the FLAC3D software to establish a three-dimensional numerical model. The results showed that the peak particle velocity (PPV) decreased with increasing distance from the blasting center. The PPV measured at the underground diaphragm wall was 1.424 cm/s, while at the bottom of the central pillar it was 1.482 cm/s. The predicted PPV on the roof was up to 1.537 cm/s, which met the safety standards. According to the cloud map of particle vibration velocity and the comprehensive analysis of particle vibration velocity, the degree of impact of artificial structures in the subway tunnel was the central pillar, the underground diaphragm wall, and the roof in order from high to low. After eight blasting operations per day, the vibration velocity trend at the vulnerable point of the central column increases, but it will not exceed the safety standard. |
| format | Article |
| id | doaj-art-b779aa4725544cef80f3b0eb0e8b6a05 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-b779aa4725544cef80f3b0eb0e8b6a052025-01-10T13:14:57ZengMDPI AGApplied Sciences2076-34172024-12-0115126010.3390/app15010260Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel ExcavationYunhao Che0Enan Chi1School of Mining Engineering, Guizhou University, Guiyang 550025, ChinaSchool of Mining Engineering, Guizhou University, Guiyang 550025, ChinaIn evaluating the construction safety of the building in the subway tunnel using the cover-and-cut method, the main objective is to analyze the diaphragm wall, the central pillar, and the roof. This article conducted a blasting vibration test based on the background of the Guiyang Metro Line 3 project and used the FLAC3D software to establish a three-dimensional numerical model. The results showed that the peak particle velocity (PPV) decreased with increasing distance from the blasting center. The PPV measured at the underground diaphragm wall was 1.424 cm/s, while at the bottom of the central pillar it was 1.482 cm/s. The predicted PPV on the roof was up to 1.537 cm/s, which met the safety standards. According to the cloud map of particle vibration velocity and the comprehensive analysis of particle vibration velocity, the degree of impact of artificial structures in the subway tunnel was the central pillar, the underground diaphragm wall, and the roof in order from high to low. After eight blasting operations per day, the vibration velocity trend at the vulnerable point of the central column increases, but it will not exceed the safety standard.https://www.mdpi.com/2076-3417/15/1/260blasting vibrationcover-and-cut methodsubway tunnel constructionpeak particle velocity (PPV)structural safety assessment |
| spellingShingle | Yunhao Che Enan Chi Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation Applied Sciences blasting vibration cover-and-cut method subway tunnel construction peak particle velocity (PPV) structural safety assessment |
| title | Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation |
| title_full | Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation |
| title_fullStr | Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation |
| title_full_unstemmed | Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation |
| title_short | Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation |
| title_sort | safety assessment of the cover and cut method under blasting vibration induced by tunnel excavation |
| topic | blasting vibration cover-and-cut method subway tunnel construction peak particle velocity (PPV) structural safety assessment |
| url | https://www.mdpi.com/2076-3417/15/1/260 |
| work_keys_str_mv | AT yunhaoche safetyassessmentofthecoverandcutmethodunderblastingvibrationinducedbytunnelexcavation AT enanchi safetyassessmentofthecoverandcutmethodunderblastingvibrationinducedbytunnelexcavation |