D0L:10.13374/.issn1001-053x.2012.09.002 第34卷第9期 北京科技大学学报 Vol.34 No.9 2012年9月 Journal of University of Science and Technology Beijing Sep.2012 皮带运输巷道粉尘质量浓度分布规律的数值模拟 蒋仲安四陈举师牛伟王晶晶 陈梅岭 北京科技大学教育部金属矿山高效开采与安全重点实验室，北京100083 ☒通信作者，E-mail:jza1963@263.com 摘要为了掌握皮带运输巷道粉尘质量浓度的分布规律，获取通风除尘设计的合理参数，以西石门铁矿提升车间系统40 皮带运输平巷为研究背景，依据气固两相流理论，运用计算流体力学的离散相模型对皮带运输巷道粉尘质量浓度进行数值模 拟，并与现场实测的粉尘质量浓度分布情况进行对比分析，模拟结果与实测数据基本吻合.研究表明，运用欧拉一拉格朗日法 对皮带运输巷道粉尘质量浓度分布规律进行模拟是可行的.在通风除尘设计中，当巷道风速为3·s·时，排尘效果最好，粉 尘质量浓度整体保持在3mg°m3以下：皮带运输速度为2.5ms时粉尘质量浓度较低：定期进行壁面酒水也能在一定程度 上实现降尘目标 关键词矿山巷道：皮带运输机：除尘；通风；两相流；数值分析：质量浓度 分类号TD714°.2 Numerical simulation of dust concentration distribution regularity in a belt con- veyer roadway JIANG Zhong-an,CHEN Ju-shi,NIU Wei,WANG Jing-jing,CHEN Mei-ing Key Laboratory of the Ministry of Education for High Efficiency Exploitation and Safety of Metal Mine,University of Science and Technology Beijing,Bei- jing 100083,China Corresponding author,E-mail:jzal963@263.com ABSTRACT In order to master the regularity of dust mass concentration distribution in a belt conveyer roadway and obtain rational parameters for the design of dust removal by ventilation,taking the 40belt conveyer drift of the hoisting system in Xishimen Iron Mine as the research background,dust mass concentration in the belt conveyer roadway was simulated using the discrete phase model for computational fluid mechanics,which is based on the theory of gas-solid two-phase flow.By contrast with field measurement of dust mass concentration distribution,the simulating results were essentially coincident with the measured data,indicating that using the Eul- er-Lagrange method to simulate dust mass concentration distribution in the belt conveyer roadway is feasible.In the design of dust re- moval by ventilation,the dust mass concentration can be kept within 3mg*mas the wind velocity is 3ms.The dust mass concen- tration is lower at the belt conveyer velocity of 2.5ms.In addition,regular wall sprinkling can decrease the dust mass concentra- tion. KEY WORDS mine roadways:belt conveyers:dust removal;ventilation;two-phase flow:numerical analysis;mass concentration 提升车间系统是大中型治金矿山井下开采的重 而且还严重影响工人的身体健康，当其浓度达到一 要环节之一，大多由板式给矿机、颚式破碎机及多级 定范围时还有粉尘爆炸的危险-.本文以现场数 皮带运输机组成，负责将井下生产的全部矿石输送 据为依托，以气固两相流理论为基础，建立皮带运输 至地表四.皮带运输机在矿石运输过程中，由于皮 巷道粉尘运动的数学模型，研究皮带运输机运行过 带自身的振动以及矿石与空气的摩擦会产生高浓度 程中逸散粉尘的运动规律，掌握粉尘浓度的分布特 的粉尘，不仅污染环境、损耗原料和加快设备磨损， 点，获取通风除尘设计的合理参数B. 收稿日期：201106-29第 34 卷 第 9 期 2012 年 9 月 北京科技大学学报 Journal of University of Science and Technology Beijing Vol． 34 No． 9 Sep． 2012 皮带运输巷道粉尘质量浓度分布规律的数值模拟 蒋仲安 陈举师 牛 伟 王晶晶 陈梅岭 北京科技大学教育部金属矿山高效开采与安全重点实验室，北京 100083 通信作者，E-mail: jza1963@ 263． com 摘 要 为了掌握皮带运输巷道粉尘质量浓度的分布规律，获取通风除尘设计的合理参数，以西石门铁矿提升车间系统 40# 皮带运输平巷为研究背景，依据气固两相流理论，运用计算流体力学的离散相模型对皮带运输巷道粉尘质量浓度进行数值模 拟，并与现场实测的粉尘质量浓度分布情况进行对比分析，模拟结果与实测数据基本吻合． 研究表明，运用欧拉--拉格朗日法 对皮带运输巷道粉尘质量浓度分布规律进行模拟是可行的． 在通风除尘设计中，当巷道风速为 3 m·s － 1 时，排尘效果最好，粉 尘质量浓度整体保持在 3 mg·m － 3 以下; 皮带运输速度为 2. 5 m·s － 1 时粉尘质量浓度较低; 定期进行壁面洒水也能在一定程度 上实现降尘目标． 关键词 矿山巷道; 皮带运输机; 除尘; 通风; 两相流; 数值分析; 质量浓度 分类号 TD714 + ． 2 Numerical simulation of dust concentration distribution regularity in a belt con￾veyer roadway JIANG Zhong-an ，CHEN Ju-shi，NIU Wei，WANG Jing-jing，CHEN Mei-ling Key Laboratory of the Ministry of Education for High Efficiency Exploitation and Safety of Metal Mine，University of Science and Technology Beijing，Bei￾jing 100083，China Corresponding author，E-mail: jza1963@ 263． com ABSTRACT In order to master the regularity of dust mass concentration distribution in a belt conveyer roadway and obtain rational parameters for the design of dust removal by ventilation，taking the 40# belt conveyer drift of the hoisting system in Xishimen Iron Mine as the research background，dust mass concentration in the belt conveyer roadway was simulated using the discrete phase model for computational fluid mechanics，which is based on the theory of gas-solid two-phase flow． By contrast with field measurement of dust mass concentration distribution，the simulating results were essentially coincident with the measured data，indicating that using the Eul￾er-Lagrange method to simulate dust mass concentration distribution in the belt conveyer roadway is feasible． In the design of dust re￾moval by ventilation，the dust mass concentration can be kept within 3 mg·m － 3 as the wind velocity is 3 m·s － 1 ． The dust mass concen￾tration is lower at the belt conveyer velocity of 2. 5 m·s － 1 ． In addition，regular wall sprinkling can decrease the dust mass concentra￾tion． KEY WORDS mine roadways; belt conveyers; dust removal; ventilation; two-phase flow; numerical analysis; mass concentration 收稿日期: 2011--06--29 提升车间系统是大中型冶金矿山井下开采的重 要环节之一，大多由板式给矿机、颚式破碎机及多级 皮带运输机组成，负责将井下生产的全部矿石输送 至地表［1］． 皮带运输机在矿石运输过程中，由于皮 带自身的振动以及矿石与空气的摩擦会产生高浓度 的粉尘，不仅污染环境、损耗原料和加快设备磨损， 而且还严重影响工人的身体健康，当其浓度达到一 定范围时还有粉尘爆炸的危险［2--4］． 本文以现场数 据为依托，以气固两相流理论为基础，建立皮带运输 巷道粉尘运动的数学模型，研究皮带运输机运行过 程中逸散粉尘的运动规律，掌握粉尘浓度的分布特 点，获取通风除尘设计的合理参数［5--6］． DOI:10.13374/j.issn1001-053x.2012.09.002