[1]王志荣.T形掘进巷粉尘污染规律及司机接尘特征研究[J].中国安全生产科学技术,2025,21(7):78-84.[doi:10.11731/j.issn.1673-193x.2025.07.010]
WANG Zhirong.Research on dust pollution patterns in T-shape excavation roadways and dust exposure characteristics for roadheader operators[J].Journal of Safety Science and Technology,2025,21(7):78-84.[doi:10.11731/j.issn.1673-193x.2025.07.010]
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T形掘进巷粉尘污染规律及司机接尘特征研究
WANG Zhirong.Research on dust pollution patterns in T-shape excavation roadways and dust exposure characteristics for roadheader operators[J].Journal of Safety Science and Technology,2025,21(7):78-84.[doi:10.11731/j.issn.1673-193x.2025.07.010]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 21
- 期数:
- 2025年7期
- 页码:
- 78-84
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2025-07-30
文章信息/Info
- Title:
- Research on dust pollution patterns in T-shape excavation roadways and dust exposure characteristics for roadheader operators
- 文章编号:
- 1673-193X(2025)-07-0078-07
- Keywords:
- fully mechanized excavation face ; numerical simulation; dust mass concentration; breathing zone
- 分类号:
- TD714.2；X936
- 文献标志码:
- A
- 摘要:
- 为探究综掘工作面粉尘危害问题，加强工人职业病防护，以大柳塔综掘工作面为例，建立综掘工作面和精确化网格模型，运用Fluent数值模拟软件，基于CFD-DPM数学模型对工作面粉尘运移规律进行模拟分析，重点研究掘进司机呼吸半球的接尘浓度与粒度特征。研究结果表明：高速风流进入工作面后与壁面发生碰撞，在风筒形成1个涡流场，同时风流带动粉尘运移，在掘进司机工作范围内，粉尘受涡流场作用，形成“斑点状”的高质量浓度粉尘区域，粉尘质量浓度最高达到2 154.11 mg/m3，应作为工作面粉尘重点防范区域，掘进司机呼吸半球内总粉尘平均质量浓度为1 044.25 mg/m3，1~10 μm的细小颗粒占比最高，达到25%，10~20 μm颗粒占比最少，仅为10%。研究结果可为掘进司机个体防护提供理论支撑。
- Abstract:
- In order to explore dust hazards at fully mechanized excavation faces and enhance occupational disease prevention for workers,this study established a refined mesh model of the Daliuta fully mechanized excavation face.Using Fluent numerical simulation software and the CFD-DPM mathematical model,it analyzed dust migration patterns with a focus on dust concentration and particle size characteristics in the operator’s breathing zone.The results show that after high-speed airflow enters the excavation face and collides with the wall,forming a vortex near the duct,it simultaneously carries dust migration.Within the operator’s operational range,dust forms vortex-influenced patchy zones of high concentration (peaking at 2,154.11 mg/m3),which require prioritized dust control measures.The average total dust concentration in the operator’s breathing zone reached 1,044.25 mg/m3,with fine particles of 1~10 μm accounting for the highest proportion (25%),while 10~20 μm particles constituted the lowest (10%).These findings provide theoretical support for personalized protection measures for roadheader operators.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2024-09-22
作者简介： 王志荣，本科，工程师，主要研究方向为一通三防。
