Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting
Based on the excavation of Yuelongmen tunnel on ChengLan Railway in China, this paper will probe into the forced ventilation effect of harmful gas generated by drilling and blasting construction, simulate the diffusion process of harmful gas generated during blasting operation on the tunnel face by...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8857947 |
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| _version_ | 1832552579981115392 |
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| author | Qingsong Pu Yi Luo Junhong Huang Yingwei Zhu Shaohua Hu Chenhao Pei Guang Zhang Xinping Li |
| author_facet | Qingsong Pu Yi Luo Junhong Huang Yingwei Zhu Shaohua Hu Chenhao Pei Guang Zhang Xinping Li |
| author_sort | Qingsong Pu |
| collection | DOAJ |
| description | Based on the excavation of Yuelongmen tunnel on ChengLan Railway in China, this paper will probe into the forced ventilation effect of harmful gas generated by drilling and blasting construction, simulate the diffusion process of harmful gas generated during blasting operation on the tunnel face by establishing the finite element model of gas turbulent flow and concentration diffusion in the tunnel, and study the spatial-temporal evolution law of CO concentration field under different air pipe layout locations and tunnel excavation methods. The results show that, compared with corner layout, haunch layout, and central layout, the ventilation effect is the best when the air pipes are arranged near the wall at the tunnel vault, and the CO concentration can be reduced to the concentration limit after 588 s of ventilation; compared with the full-face tunneling method and the lower pilot heading method, the benching tunneling method can effectively reduce the retention time of CO near the tunnel face, and the CO concentration on the tunnel face can be reduced to the standard limit after 326 s of ventilation near the wall of tunnel vault. |
| format | Article |
| id | doaj-art-958926a5bb0c45ea9e6d0708035257be |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-958926a5bb0c45ea9e6d0708035257be2025-02-03T05:58:25ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88579478857947Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and BlastingQingsong Pu0Yi Luo1Junhong Huang2Yingwei Zhu3Shaohua Hu4Chenhao Pei5Guang Zhang6Xinping Li7Hubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, ChinaHubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, ChinaHubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, ChinaSchool of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, ChinaHubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, ChinaHubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, ChinaBased on the excavation of Yuelongmen tunnel on ChengLan Railway in China, this paper will probe into the forced ventilation effect of harmful gas generated by drilling and blasting construction, simulate the diffusion process of harmful gas generated during blasting operation on the tunnel face by establishing the finite element model of gas turbulent flow and concentration diffusion in the tunnel, and study the spatial-temporal evolution law of CO concentration field under different air pipe layout locations and tunnel excavation methods. The results show that, compared with corner layout, haunch layout, and central layout, the ventilation effect is the best when the air pipes are arranged near the wall at the tunnel vault, and the CO concentration can be reduced to the concentration limit after 588 s of ventilation; compared with the full-face tunneling method and the lower pilot heading method, the benching tunneling method can effectively reduce the retention time of CO near the tunnel face, and the CO concentration on the tunnel face can be reduced to the standard limit after 326 s of ventilation near the wall of tunnel vault.http://dx.doi.org/10.1155/2020/8857947 |
| spellingShingle | Qingsong Pu Yi Luo Junhong Huang Yingwei Zhu Shaohua Hu Chenhao Pei Guang Zhang Xinping Li Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting Shock and Vibration |
| title | Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting |
| title_full | Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting |
| title_fullStr | Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting |
| title_full_unstemmed | Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting |
| title_short | Simulation Study on the Effect of Forced Ventilation in Tunnel under Single-Head Drilling and Blasting |
| title_sort | simulation study on the effect of forced ventilation in tunnel under single head drilling and blasting |
| url | http://dx.doi.org/10.1155/2020/8857947 |
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