第36卷第6期 北京科技大学学报 Vol.36 No.6 2014年6月 Journal of University of Science and Technology Beijing Jun.2014 综采割煤粉尘运移影响因素的数值模拟 谭聪，蒋仲安区，陈举师，王 佩 北京科技大学土木与环境工程学院，北京100083 ☒通信作者，E-mail:jzal963@263.nct 摘要为解决综采割煤粉尘质量浓度高的问题，获取粉尘控制的合理参数，改善作业环境，以邢东矿2225工作面为研究背 景，依据气固两相流理论，运用Fuet软件对综采工作面割煤粉尘运动规律进行数值模拟，并与现场实测的粉尘质量浓度分布 情况进行对比分析，模拟结果与实际数据基本一致.研究结果表明：工作面风速、采煤机滚筒转速、溜子速度以及壁面条件是 影响综采工作面粉尘质量浓度分布的几个重要因素.当工作面平均风速在1.4ms1,滚筒转速不超过2.5rad·s',溜子速度 不超过1.5ms1,防降尘效果最佳.同时洒水保持煤壁湿润也起到一定的捕尘作用 关键词煤尘：除尘；综采工作面：运动：影响因素：数值分析 分类号TD714·.2 Numerical simulation of influencing factors on dust movement during coal cutting at fully mechanized working faces TAN Cong,JIANG Zhong-an,CHEN Ju-shi,WANG Pei School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:jzal963@263.net ABSTRACT To resolve the problem of high dust concentration during the process of coal cutting at fully-mechanized working faces and obtain rational dust control parameters,as well as to meliorate working conditions,considering No.2225 working face in Xingdong Mine as a research background,numerical simulation was performed using FLUENT software to track dust movement laws during coal cutting at the fully-mechanized working face based on the theory of gas-solid two-phase flow.Compared with the actual dust concentra- tion distribution in the mine,the simulation results are basically consistent with the actual data.The wind velocity at the fully-mecha- nized working face,shearer drum rotation speed,valve speed,and wall condition mainly affect the dust concentration distribution at the fully-mechanized working face.It is concluded that the dust removal effect is better when the average wind velocity is 1.4m's,the drum rotation speed is no more than 2.5rads,and the valve speed is less than 1.5ms.Meanwhile,sprinkling water,which can keep the coal wall moist,plays a significant role in capturing dust. KEY WORDS coal dust;dust abatement:fully mechanized working faces:movement:influencing factors:numerical analysis 综采工作面是煤矿井下最大的产尘场所，粉尘 事情.工作面粉尘浓度分布受多种因素的综合作 质量浓度高达1000mg·m3以上，远远超过国家有 用，煤层的湿润性、生产工艺、防降尘措施等都是影 关卫生标准，不仅严重威胁着煤矿工人的身心健康， 响粉尘分布的重要因素.因此，深入研究生产工艺 还大大恶化了工作条件，加大了机械设备的磨损，甚 参数对粉尘分布规律的影响，通过调整相关参数，达 至还有煤尘爆炸的危险·-习.采取有效的降尘措 到降低粉尘浓度的目的，是一种有效的粉尘控制 施，降低综采工作面的粉尘浓度是一件刻不容缓的 方法 收稿日期：2013-08-29 基金项目：国家自然科学基金资助项目(51274024) DOI:10.13374/j.issn1001-053x.2014.06.002:http://journals.ustb.edu.cn第 36 卷 第 6 期 2014 年 6 月 北京科技大学学报 Journal of University of Science and Technology Beijing Vol． 36 No． 6 Jun． 2014 综采割煤粉尘运移影响因素的数值模拟 谭 聪，蒋仲安，陈举师，王 佩 北京科技大学土木与环境工程学院，北京 100083  通信作者，E-mail: jza1963@ 263． net 摘 要 为解决综采割煤粉尘质量浓度高的问题，获取粉尘控制的合理参数，改善作业环境，以邢东矿 2225 工作面为研究背 景，依据气固两相流理论，运用 Fluent 软件对综采工作面割煤粉尘运动规律进行数值模拟，并与现场实测的粉尘质量浓度分布 情况进行对比分析，模拟结果与实际数据基本一致． 研究结果表明: 工作面风速、采煤机滚筒转速、溜子速度以及壁面条件是 影响综采工作面粉尘质量浓度分布的几个重要因素． 当工作面平均风速在 1. 4 m·s － 1 ，滚筒转速不超过 2. 5 rad·s － 1 ，溜子速度 不超过 1. 5 m·s － 1 ，防降尘效果最佳． 同时洒水保持煤壁湿润也起到一定的捕尘作用． 关键词 煤尘; 除尘; 综采工作面; 运动; 影响因素; 数值分析 分类号 TD714 + . 2 Numerical simulation of influencing factors on dust movement during coal cutting at fully mechanized working faces TAN Cong，JIANG Zhong-an ，CHEN Ju-shi，WANG Pei School of Civil and Environmental Engineering，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: jza1963@ 263． net ABSTＲACT To resolve the problem of high dust concentration during the process of coal cutting at fully-mechanized working faces and obtain rational dust control parameters，as well as to meliorate working conditions，considering No． 2225 working face in Xingdong Mine as a research background，numerical simulation was performed using FLUENT software to track dust movement laws during coal cutting at the fully-mechanized working face based on the theory of gas-solid two-phase flow． Compared with the actual dust concentra￾tion distribution in the mine，the simulation results are basically consistent with the actual data． The wind velocity at the fully-mecha￾nized working face，shearer drum rotation speed，valve speed，and wall condition mainly affect the dust concentration distribution at the fully-mechanized working face． It is concluded that the dust removal effect is better when the average wind velocity is 1. 4 m·s － 1 ，the drum rotation speed is no more than 2. 5 rad·s － 1 ，and the valve speed is less than 1. 5 m·s － 1 ． Meanwhile，sprinkling water，which can keep the coal wall moist，plays a significant role in capturing dust． KEY WOＲDS coal dust; dust abatement; fully mechanized working faces; movement; influencing factors; numerical analysis 收稿日期: 2013--08--29 基金项目: 国家自然科学基金资助项目( 51274024) DOI: 10． 13374 /j． issn1001--053x． 2014． 06． 002; http: / /journals． ustb． edu． cn 综采工作面是煤矿井下最大的产尘场所，粉尘 质量浓度高达 1000 mg·m － 3 以上，远远超过国家有 关卫生标准，不仅严重威胁着煤矿工人的身心健康， 还大大恶化了工作条件，加大了机械设备的磨损，甚 至还有煤尘爆炸的危险［1 － 3］． 采取有效的降尘措 施，降低综采工作面的粉尘浓度是一件刻不容缓的 事情． 工作面粉尘浓度分布受多种因素的综合作 用，煤层的湿润性、生产工艺、防降尘措施等都是影 响粉尘分布的重要因素． 因此，深入研究生产工艺 参数对粉尘分布规律的影响，通过调整相关参数，达 到降低粉尘浓度的目的，是一种有效的粉尘控制 方法．