Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent
Sichuan-Tibet Railway is a major construction project to ensure national defense security and support social and economic development in the west. Due to the geographical environment at high altitudes in the Sichuan-Tibet region, for every 1000 m increase in the average altitude, the atmospheric pre...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | E3S Web of Conferences |
| Subjects: | |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/23/e3sconf_roomvent2022_02006.pdf |
| _version_ | 1818008624155328512 |
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| author | Feng Guohui Liu Yuhan Sun Jialin Zang Yan |
| author_facet | Feng Guohui Liu Yuhan Sun Jialin Zang Yan |
| author_sort | Feng Guohui |
| collection | DOAJ |
| description | Sichuan-Tibet Railway is a major construction project to ensure national defense security and support social and economic development in the west. Due to the geographical environment at high altitudes in the Sichuan-Tibet region, for every 1000 m increase in the average altitude, the atmospheric pressure decreases by about 11.55 %, and the oxygen partial pressure decreases accordingly, forming a low-pressure and low-oxygen environment, which affects the construction safety. The oxygen consumption of mechanical equipment in the tunnel and the discharge of pollutants make the construction personnel’s hypoxia problem more serious. Based on the project of the Sejila Mountain Tunnel, this paper divides the tunnel into the working face and the construction section along the tunnel according to different construction procedures. Based on the numerical simulation by CFD software, the distribution law of oxygen concentration in the tunnel construction process before the implementation of the environmental control scheme under different factors is proposed, and the relationship between various influencing factors and oxygen concentration distribution is obtained. It is concluded that oxygen consumption and emission of internal combustion engines and tunnel excavation length are important factors affecting oxygen concentration in the tunnel construction environment. |
| first_indexed | 2024-04-14T05:31:42Z |
| format | Article |
| id | doaj.art-2a513822083a49a0b7f72d15c70e71f0 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-14T05:31:42Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-2a513822083a49a0b7f72d15c70e71f02022-12-22T02:09:46ZengEDP SciencesE3S Web of Conferences2267-12422022-01-013560200610.1051/e3sconf/202235602006e3sconf_roomvent2022_02006Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluentFeng Guohui0Liu Yuhan1Sun Jialin2Zang Yan3School of Municipal and Environmental Engineering, Shenyang Jianzhu UniversitySchool of Municipal and Environmental Engineering, Shenyang Jianzhu UniversitySchool of Municipal and Environmental Engineering, Shenyang Jianzhu UniversitySchool of Municipal and Environmental Engineering, Shenyang Jianzhu UniversitySichuan-Tibet Railway is a major construction project to ensure national defense security and support social and economic development in the west. Due to the geographical environment at high altitudes in the Sichuan-Tibet region, for every 1000 m increase in the average altitude, the atmospheric pressure decreases by about 11.55 %, and the oxygen partial pressure decreases accordingly, forming a low-pressure and low-oxygen environment, which affects the construction safety. The oxygen consumption of mechanical equipment in the tunnel and the discharge of pollutants make the construction personnel’s hypoxia problem more serious. Based on the project of the Sejila Mountain Tunnel, this paper divides the tunnel into the working face and the construction section along the tunnel according to different construction procedures. Based on the numerical simulation by CFD software, the distribution law of oxygen concentration in the tunnel construction process before the implementation of the environmental control scheme under different factors is proposed, and the relationship between various influencing factors and oxygen concentration distribution is obtained. It is concluded that oxygen consumption and emission of internal combustion engines and tunnel excavation length are important factors affecting oxygen concentration in the tunnel construction environment.https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/23/e3sconf_roomvent2022_02006.pdfsichuan-tibet railwayhigh altitudenumerical simulationtunnel construction |
| spellingShingle | Feng Guohui Liu Yuhan Sun Jialin Zang Yan Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent E3S Web of Conferences sichuan-tibet railway high altitude numerical simulation tunnel construction |
| title | Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent |
| title_full | Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent |
| title_fullStr | Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent |
| title_full_unstemmed | Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent |
| title_short | Study on oxygen concentration distribution of Sejila mount tunnel construction based on fluent |
| title_sort | study on oxygen concentration distribution of sejila mount tunnel construction based on fluent |
| topic | sichuan-tibet railway high altitude numerical simulation tunnel construction |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/23/e3sconf_roomvent2022_02006.pdf |
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