Comparison of ventilation methods used during tunnel construction
Ensuring adequate ventilation during tunnel construction is a critical issue that directly affects construction efficiency. A good ventilation environment can effectively guarantee the construction progress. In this paper, by repeatedly selecting the flow field simulation parameters and continuously...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19942060.2019.1686427 |
| _version_ | 1819143060585447424 |
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| author | Xiaoke Chang Junrui Chai Zhao Liu Yuan Qin Zengguang Xu |
| author_facet | Xiaoke Chang Junrui Chai Zhao Liu Yuan Qin Zengguang Xu |
| author_sort | Xiaoke Chang |
| collection | DOAJ |
| description | Ensuring adequate ventilation during tunnel construction is a critical issue that directly affects construction efficiency. A good ventilation environment can effectively guarantee the construction progress. In this paper, by repeatedly selecting the flow field simulation parameters and continuously summarizing the calculation methods, a reasonable model is selected to simulate the tunnel engineering. Specifically, the eddy current zone near the working face is obtained by analysing the flow field of forced ventilation tunnels. Furthermore, we analyse the dispersion and accumulation of harmful gases in the tunnel. The CO concentration at typical locations in the tunnel is also examined in order to determine areas with the lowest likelihood of harmful gas discharge. We then propose adding a jet fan to the tunnel to create an extraction plus ventilation tunnel. Simulation results reveal that the addition of a jet fan causes eddy currents that improve the extraction of harmful gases, thereby greatly reducing ventilation time and increasing efficiency. The results of the model can effectively guide the actual project, and help them save the construction time. |
| first_indexed | 2024-12-22T12:20:14Z |
| format | Article |
| id | doaj.art-60c34488e44a4dfbbc7f195e80510de5 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-12-22T12:20:14Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-60c34488e44a4dfbbc7f195e80510de52022-12-21T18:26:01ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2020-01-0114110712110.1080/19942060.2019.16864271686427Comparison of ventilation methods used during tunnel constructionXiaoke Chang0Junrui Chai1Zhao Liu2Yuan Qin3Zengguang Xu4State Key Laboratory Base of Eco-hydraulic Engineering in Northwest Arid Area, Xi’an University of TechnologyState Key Laboratory Base of Eco-hydraulic Engineering in Northwest Arid Area, Xi’an University of TechnologyState Key Laboratory Base of Eco-hydraulic Engineering in Northwest Arid Area, Xi’an University of TechnologyState Key Laboratory Base of Eco-hydraulic Engineering in Northwest Arid Area, Xi’an University of TechnologyState Key Laboratory Base of Eco-hydraulic Engineering in Northwest Arid Area, Xi’an University of TechnologyEnsuring adequate ventilation during tunnel construction is a critical issue that directly affects construction efficiency. A good ventilation environment can effectively guarantee the construction progress. In this paper, by repeatedly selecting the flow field simulation parameters and continuously summarizing the calculation methods, a reasonable model is selected to simulate the tunnel engineering. Specifically, the eddy current zone near the working face is obtained by analysing the flow field of forced ventilation tunnels. Furthermore, we analyse the dispersion and accumulation of harmful gases in the tunnel. The CO concentration at typical locations in the tunnel is also examined in order to determine areas with the lowest likelihood of harmful gas discharge. We then propose adding a jet fan to the tunnel to create an extraction plus ventilation tunnel. Simulation results reveal that the addition of a jet fan causes eddy currents that improve the extraction of harmful gases, thereby greatly reducing ventilation time and increasing efficiency. The results of the model can effectively guide the actual project, and help them save the construction time.http://dx.doi.org/10.1080/19942060.2019.1686427tunnel engineeringcompustational fluid dynamics simulationforced ventilationextraction ventilationfluid fieldconcentration field |
| spellingShingle | Xiaoke Chang Junrui Chai Zhao Liu Yuan Qin Zengguang Xu Comparison of ventilation methods used during tunnel construction Engineering Applications of Computational Fluid Mechanics tunnel engineering compustational fluid dynamics simulation forced ventilation extraction ventilation fluid field concentration field |
| title | Comparison of ventilation methods used during tunnel construction |
| title_full | Comparison of ventilation methods used during tunnel construction |
| title_fullStr | Comparison of ventilation methods used during tunnel construction |
| title_full_unstemmed | Comparison of ventilation methods used during tunnel construction |
| title_short | Comparison of ventilation methods used during tunnel construction |
| title_sort | comparison of ventilation methods used during tunnel construction |
| topic | tunnel engineering compustational fluid dynamics simulation forced ventilation extraction ventilation fluid field concentration field |
| url | http://dx.doi.org/10.1080/19942060.2019.1686427 |
| work_keys_str_mv | AT xiaokechang comparisonofventilationmethodsusedduringtunnelconstruction AT junruichai comparisonofventilationmethodsusedduringtunnelconstruction AT zhaoliu comparisonofventilationmethodsusedduringtunnelconstruction AT yuanqin comparisonofventilationmethodsusedduringtunnelconstruction AT zengguangxu comparisonofventilationmethodsusedduringtunnelconstruction |