| 掘进面产尘机理及粉尘迁移规律的研究分析 |
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| 引用本文： | 陆新晓,王德明,任万兴,胡方坤,王和堂.掘进面产尘机理及粉尘迁移规律的研究分析[J].煤矿开采,2012(5):19-22. |
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| 作者姓名： | 陆新晓 王德明 任万兴 胡方坤 王和堂 |
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| 作者单位： | 中国矿业大学安全工程学院;煤炭资源与安全开采国家重点实验室 |
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| 基金项目： | 国家自然科学基金青年科学基金资助项目(51104153);中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 通过深入剖析掘进面的产尘规律,借助于CFD数值模拟,对巷道粉尘产生与扩散规律进行了全尺寸模拟,全面获取了粉尘的横向与纵向迁移规律。由于"附壁效应",巷道壁面明显低于中轴线上的粉尘浓度,但距离迎头越远,"附壁效应"越弱,断面粉尘浓度分布越均匀,约距离迎头35m处,巷道粉尘浓度分布基本趋于一致;同时,由于涡流效应的存在,粉尘的纵向迁移变为了横向迁移,在掘进头附近形成了面积为1m×3m和0.8m×1.5m的粉尘积聚区,严重威胁了掘进司机的健康安全。
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| 关 键 词： | 掘进面 粉尘 迁移规律 附壁效应 |
Dust Production Mechanism and Dust Migration Rule in Driving Face |
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| LU Xin-xiao,WANG De-ming,REN Wan-xing,HU Fang-kun,WANG He-tang.Dust Production Mechanism and Dust Migration Rule in Driving Face[J].Coal Mining Technology,2012(5):19-22. |
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| Authors: | LU Xin-xiao WANG De-ming REN Wan-xing HU Fang-kun WANG He-tang |
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| Affiliation: | 1,2(1.Safety Engineering School,China University of Mining & Technology,Xuzhou 221116,China; 2.State Key Laboratory of Coal Resources & Safe Mining,Xuzhou 221008,China) |
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| Abstract: | By analyzing dust production rule of driving face and applying CFD software,dust production and diffusion rule was simulated;dust horizontal and vertical migration rule was obtained.Because of "coada effect",dust concentration at face of roadway was evidently lower than that at axle line.With the distance from the working face farer,"coada effect" was weaker,section dust concentration was evener.At the point of 35m far away from the face,dust concentration was almost even.At the same time,dust vertical migration became horizontal migration because of "eddying effect",1m×3m and 0.8m×1.5m dust aggregation area formed,which would seriously threaten health and safety of driver. |
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| Keywords: | driving face dust migration rule coada effect |
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