| 硬岩隧道施工通风系统优化与抑尘效果评价 |
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| 引用本文： | 王春国. 硬岩隧道施工通风系统优化与抑尘效果评价[J]. 山东大学学报(工学版), 2021, 51(3): 52-60. DOI: 10.6040/j.issn.1672-3961.0.2020.468 |
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| 作者姓名： | 王春国 |
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| 作者单位： | 中铁十四局集团隧道工程有限公司,山东 济南250003 |
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| 基金项目： | 山东省重点研发计划资助项目(2018GHY115015) |
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| 摘 要： | 硬岩隧道掘进机(tunnel boring machine,TBM)在施工过程中会产生大量粉尘,粉尘是影响操作环境与工人身体健康的重要因素.为了进一步优化施工通风除尘效果,结合青岛地铁1号线双护盾TBM实际工况,使用Ansys-Fluent软件对隧道开挖过程进行数值分析.检测隧道各位置风速及粉尘质量浓度并与数值模拟结果...
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| 关 键 词： | 隧道掘进机 通风系统 抑尘效果 数值模拟 粉尘扩散 |
Optimization of ventilation system of TBM tunnel construction and evaluation of dust suppression effect |
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| WANG Chunguo. Optimization of ventilation system of TBM tunnel construction and evaluation of dust suppression effect[J]. Journal of Shandong University of Technology, 2021, 51(3): 52-60. DOI: 10.6040/j.issn.1672-3961.0.2020.468 |
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| Authors: | WANG Chunguo |
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| Affiliation: | Tunnel Engineering Co., Ltd., China Railway 14 Bureau Group, Jinan 250003, Shandong, China |
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| Abstract: | Hard rock tunneling boring machine(TBM)produces a large amount of dust during construction, which is an important factor affecting the operating environment and the health of workers. To further optimize the construction ventilation and dust removal effect, combined with the actual working conditions of Qingdao Metro Line 1 double shield TBM, Ansys-Fluent software was used to carry out numerical analysis of the tunnel excavation process. The wind speed and dust mass concentration at each location of the tunnel were detected and compared with the numerical simulation results to verify the effectiveness of the model. In view of whether it is necessary to open the dust removal system in the process of TBM tunnel construction, as well as the location of dust removal tuyere and the selection of optimal suction flow, numerical simulation was carried out. When the dust removal system was turned off or the dust removal system was turned on but the suction flow was below 4 m3/s, and the dust diffuses to most areas of the TBM tunneling area. When the dust duct was 15 m away from the hand surface and the suction airflow was 12 m3/s, the dust removal effect reached the best, and the dust diffusion distance was reduced to 45 m, which could effectively remove dust. The research results could provide a scientific basis for the design and construction of tunnel ventilation and dust removal. |
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| Keywords: | tunnel boring machine ventilation system dust suppression effect numerical simulation dust diffusion |
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