摘要
为探讨煤矿井下无轨胶轮车行驶过程中扬尘分布规律和影响因素,基于COMSOLMultiphysics5.0建立井下无轨胶轮车行驶过程中扬尘的三维模型。研究积尘负荷、风速、颗粒密度、颗粒直径、无轨胶轮车行驶速度等5因素5水平25种情况下,扬尘浓度的分布。分析以上5个因素在不同空间位置上对扬尘浓度的影响水平。结果表明：无轨胶轮车行驶时巷道内不同高度处扬尘浓度分布趋势不同;积尘负荷对全巷道扬尘浓度均有显著影响;无轨胶轮车尾后5 m至车头前23 m范围内风速对扬尘浓度无影响;行驶速度对无轨胶轮车头前3~28 m范围内中间高度和行车侧扬尘浓度有显著影响,颗粒密度和直径对无轨胶轮车头前23-28 m范围内中间高度和行车侧扬尘浓度有显著影响。
To explore the distribution of fugitive dust and factors influencing on fugitive dust concentration when trackless rubber tire vehicle running in confined coal mine auxiliary haulage roadway,a threedimension simulation model was built based on COMSOLMultiphysics 5. 0. Concentration distributions of fugitive dust were studied under the conditions of different 5 levels of silt loading,wind speed,density and diameter of dust particles,vehicle speed of trackless rubber tire. The influence levels of 5 influencing factors on fugitive dust concentration were analyzed in different regions respectively. The results show that the distribution trends at different heights are different,that dust disposition is the main factor influencing. fugitive dust concentration in all of the whole roadway,that wind speed has no effect on the dust concentration from 5 m behind the caudal to 23 m front of the ahead of trackless rubber tire vehicle,that vehicle speed has a significant effect the concentration of fugitive dust at the middle height and driving side from3 m to 28 m in front of the ahead of the trackless rubber tire vehicle,the density and diameter of dust particles have a significant effect on the fugitive dust concentration at a middle height and driving side from 23 m to 28 m in front of the ahead of vehicle.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2015年第10期146-152,共7页
China Safety Science Journal
基金
国家自然科学基金资助(51274116)
关键词
受限辅运大巷
无轨胶轮车
扬尘
影响因素
正交设计
数值仿真
confined auxiliary haulage roadway
trackless rubber tire vehicle
fugitive dust
influencing factors
orthogonal design
numerical simulation
作者简介
董子文（1987-），男，安徽淮北人，博士研究生，研究方向为煤矿安全技术及工程（矿井粉尘防治、火灾防治）。E-mail：dzw2ywh@163．com。
