| 协同通风影响全断面隧道掘进机工作面岩尘分布规律研究 |
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| 引用本文： | 魏存厚,聂文,刘强,马鹤.协同通风影响全断面隧道掘进机工作面岩尘分布规律研究[J].中国安全生产科学技术,2020,16(5):76-81. |
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| 作者姓名： | 魏存厚 聂文 刘强 马鹤 |
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| 作者单位： | (山东科技大学 矿业与安全工程学院，山东 青岛 266510) |
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| 基金项目： | * 基金项目: 国家自然科学基金项目(51874191，51404147);山东省重点研究开发计划项目 (2017GSF2011) |
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| 摘 要： | 针对全断面掘进机施工过程中，产生大量岩尘影响施工人员工作环境的问题，采用理论分析、数值模拟与现场测定相结合的方法，以青岛地铁2号线全断面隧道掘进机工作面为对象，对协同通风影响全断面隧道掘进机工作面风流运移与岩尘污染分布规律进行研究。结果表明:在复合式通风模式和一定条件下，在隧道中段会形成由主通风与回风主导的耦合风场；当协同通风量(Qcv)从6 m3/s增大至12 m3/s时，产生的岩尘可控制在距掌子面77.2 m的范围内；当Qcv=8 m3/s时，岩尘最小扩散距离为44.7 m，工作区周围岩尘浓度约为30.1 mg/m3。
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| 关 键 词： | 协同通风 全断面隧道掘进机工作面 岩尘 运移规律 |
Study on influence of collaborative ventilation on distribution laws of rock dust at working face of full face tunnel boring machine |
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| WEI Cunhou,NIE Wen,LIU Qiang,MA He.Study on influence of collaborative ventilation on distribution laws of rock dust at working face of full face tunnel boring machine[J].Journal of Safety Science and Technology,2020,16(5):76-81. |
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| Authors: | WEI Cunhou NIE Wen LIU Qiang MA He |
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| Affiliation: | (School of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao Shandong 266510,China) |
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| Abstract: | In view of the problem that a large amount of rock dust produced in the construction process of full face tunnel boring machine affects the working environment of construction personnel,Taking the working face of full face tunnel boring machine in Line 2 of Qingdao Metro as the object,the combined methods of theoretical analysis,numerical simulation and field measurement were used to study the influence of collaborative ventilation on the air flow migration and the distribution laws of rock dust pollution at the working face of full face tunnel boring machine.The results showed that in the compound ventilation mode,the coupling wind field dominated by the main ventilation and return air would form in the middle section of tunnel under certain conditions. When the collaborative ventilation volume (QCV) increased from 6 m3/s to 12 m3/s,the generated rock dust could be controlled within the range of 77.2 m from the tunnel face.When QCV=8 m3/s,the minimum diffusion distance of rock dust was 44.7 m,and the concentration of rock dust around the working area was about 30.1 mg/m3. |
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| Keywords: | collaborative ventilation working face of full face tunnel boring machine rock dust migration rule |
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