卸矿站粉尘浓度影响因素的数值模拟研究
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摘要
为了掌握卸矿站卸矿时卸矿量、巷道风速、矿石粒径和壁面条件对巷道内粉尘浓度的影响,以国内某矿山2号卸矿站为研究对象,运用ANSYS软件对该卸矿站建模、模拟,研究巷道粉尘浓度与卸矿量、巷道风速、矿石粒径和壁面条件之间的关系。研究表明,数值模拟结果与实测结果基本吻合;下风向巷道粉尘浓度大小与卸矿量成正比例关系,与风速、矿石粒径成反比例关系;满足生产条件的情况下,卸矿量5 000 kg/s、巷道风速1.5 m/s时,尽可能增大矿石粒径、定期清扫巷道壁面,可有效降低巷道粉尘浓度。
In order to understand the effect of unloading rate,wind speed,ore particle size and wall condition on the dust concentration in the roadway,the authors use the ANSYS software to study the relationship be-tween dust concentration and those conditions. The results show that the numerical simulation results are in good agreement with the measured results.The proportion of dust concentration in the downhill roadway is proportional to the unloading rate,which is inversely proportional to the wind speed and ore grain size.If the production conditions are satisfied,the unloading rate of 5 000 kg/s,roadway wind speed of 1.5 m/s,the ore particle size increase,and regularly cleaning roadway wall can effectively reduce the dust concentration in roadway.
In order to understand the effect of unloading rate,wind speed,ore particle size and wall condition on the dust concentration in the roadway,the authors use the ANSYS software to study the relationship be-tween dust concentration and those conditions. The results show that the numerical simulation results are in good agreement with the measured results.The proportion of dust concentration in the downhill roadway is proportional to the unloading rate,which is inversely proportional to the wind speed and ore grain size.If the production conditions are satisfied,the unloading rate of 5 000 kg/s,roadway wind speed of 1.5 m/s,the ore particle size increase,and regularly cleaning roadway wall can effectively reduce the dust concentration in roadway.
引文
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[12]荆德吉,葛少成,刘剑,等.破碎站粉尘逸散规律及降尘技术的数值模拟及其应用[J].环境工程学报,2013,7(9):3494-3500.JING Deji,GE Shaocheng,LIU Jian,et al.Numerical simulation of dust diffusion rule and suppression technology in crushing station and its application[J].Chinese Journal of Environmental Engineering,2013,7(9):3494-3500.
[13]林梦露,蒋仲安,陈举师.基于数值模拟对李楼铁矿破碎硐室粉尘治理的研究[J].煤炭技术,2016,35(10):196-199.LIN Menglu,JIANG Zhong’an,CHEN Jushi.Based on numerical simulation for Lilou Iron ore crushing chamber dust control research[J].Coal Technology,2016,35(10):196-199.
[14]王晓珍,蒋仲安,王善文,等.煤巷掘进过程中粉尘浓度分布规律的数值模拟[J].煤炭学报,2007,32(4):386-390.WANG Xiaozhen,JIANG Zhong’an,WANG Shanwen,et al.Numerical simulation of distribution regularities of dust concentration during the ventilation process of coal roadway driving[J].China Coal Society,2007,32(4):386-390.
[15]周刚,张琦,白若男,等.大采高综采面风流-呼尘耦合运移规律CFD数值模拟[J].中国矿业大学学报,2016,45(4):684-693.ZHOU Gang,ZHANG Qi,BAI Ruonan,et al.CFD simulation of air-respirable dust coupling migration law at fully mechanized mining face with large mining height[J].Journal of China University of Mining&Technology,2016,45(4):684-693.
[16]聂文,刘阳昊,程卫民,等.综采面架间喷雾引射技术[J].中南大学学报,2015,46(11):4384-4390.NIE Wen,LIU Yanghao,CHENG Weimin,et al.Dust removel technology of eject sprying between hydraulic supports fully mechanized mining face[J].Journal of Central South University,2015,46(11):4384-4390.
[2]孙佳.露天采矿爆破烟尘行为模拟及其环境效应评价系统的研究[D].北京:北京科技大学,2006.SUN Jia.Simulation and research of soot behavior generated by blasting and its environmental effect appraisal System[D].Beijing:University Science Technology Beijing,2006.
[3]牛伟,蒋仲安,刘毅.综采工作面粉尘运动规律数值模拟及应用[J].辽宁工程技术大学学报(自然科学版),2010,29(3):357-360.NIU Wei,JIANG Zhong’an,LIU Yi.Numerical simulation on dust movement regularities at fully-mechanized coal faces and its utilization[J].Liaoning Technical University Natural Science,2010,29(3):357-360.
[4]陈举师,蒋仲安,姜兰.胶带输送巷道粉尘分布及其影响因素的实验研究[J].煤炭学报,2014,39(1):135-140.CHEN Jushi,JIANG Zhong’an,JIANG Lan.Experimental research on dust distribution and its influencing factors in belt conveyor roadway[J].Journal of China Coal Society,2014,39(1):135-140.
[5]聂文,马骁,程卫民,等.通风条件影响长压短抽掘进面粉尘扩散的仿真实验[J].中南大学学报(自然科学版),2015,46(9):3346-3353.NIE Wen,MA Xiao,CHENG Weimin,et al.Simulation experiment on effects of ventilation conditions on dust diffusion of the forced with long duct fan accompanied with short duct exhaustor in heading face[J].Journal of Central South University(Science and Technology),2015,46(9):3346-3353.
[6]陈举师,蒋仲安,杨斌,等.破碎硐室粉尘浓度空间分布规律的数值模拟[J].煤炭学报,2012,37(11):1865-1870.CHEN Jushi,JIANG Zhong’an,YANG Bin,et al.Numerical simulation of spatial dust concentration distribution regularities in crushing chamber[J].China Coal Society,2012,37(11):1865-1870.
[7]杜翠凤,王辉,蒋仲安,等.长压短抽式通风综掘工作面粉尘分布规律的数值模拟[J].北京科技大学学报,2010,32(8):957-962.DU Cuifeng,WANG Hui,JIANG Zhong’an,et al.Numerical simulations of dust distribution in a fully mechanized excavation face with far-pressing-near-absorption ventilation[J].University Science Technology Beijing,2010,32(8):957-962.
[8]杨胜来.综采工作面粉尘运移和粉尘浓度三维分布的数值模拟研究[J].中国安全科学学报,2001,11(4):64-67.YANG Shenglai.Numerical simulation of 3-dimensional dust distribution on long wall coal faces[J].China Safety Science Journal,2001,11(4):64-67.
[9]谭聪,蒋仲安,王明,等.综放工作面多尘源粉尘扩散规律的相似实验[J].煤炭学报,2015,40(1):122-127.TAN Cong,JIANG Zhong’an,WANG Ming,et al.Similar experiment on multi-source dust diffussion law in fully mechanized caving face[J].Journal of China Coal Society,2015,40(1):122-127.
[10]王洪胜,谭聪,蒋仲安,等.综放面多尘源粉尘分布规律数值模拟及实测[J].哈尔滨工业大学学报,2015,47(8):106-112.WANG Hongsheng,TAN Cong,JIANG Zhong’an,et al.Numerical simulation and field measurement of dust distribution for multisource dust at fully-mechanized caving face[J].Journal of Harbin Institute of Technology,2015,47(8):106-112.
[11]KURNIA Jundika Candra,SASMITO A Guspulung,MUJUMDAR Arun Sadashiv.Dust dispersion and management in underground mining faces[J].International Journal of Mining Science and Technology,2014,24(1):39-44.
[12]荆德吉,葛少成,刘剑,等.破碎站粉尘逸散规律及降尘技术的数值模拟及其应用[J].环境工程学报,2013,7(9):3494-3500.JING Deji,GE Shaocheng,LIU Jian,et al.Numerical simulation of dust diffusion rule and suppression technology in crushing station and its application[J].Chinese Journal of Environmental Engineering,2013,7(9):3494-3500.
[13]林梦露,蒋仲安,陈举师.基于数值模拟对李楼铁矿破碎硐室粉尘治理的研究[J].煤炭技术,2016,35(10):196-199.LIN Menglu,JIANG Zhong’an,CHEN Jushi.Based on numerical simulation for Lilou Iron ore crushing chamber dust control research[J].Coal Technology,2016,35(10):196-199.
[14]王晓珍,蒋仲安,王善文,等.煤巷掘进过程中粉尘浓度分布规律的数值模拟[J].煤炭学报,2007,32(4):386-390.WANG Xiaozhen,JIANG Zhong’an,WANG Shanwen,et al.Numerical simulation of distribution regularities of dust concentration during the ventilation process of coal roadway driving[J].China Coal Society,2007,32(4):386-390.
[15]周刚,张琦,白若男,等.大采高综采面风流-呼尘耦合运移规律CFD数值模拟[J].中国矿业大学学报,2016,45(4):684-693.ZHOU Gang,ZHANG Qi,BAI Ruonan,et al.CFD simulation of air-respirable dust coupling migration law at fully mechanized mining face with large mining height[J].Journal of China University of Mining&Technology,2016,45(4):684-693.
[16]聂文,刘阳昊,程卫民,等.综采面架间喷雾引射技术[J].中南大学学报,2015,46(11):4384-4390.NIE Wen,LIU Yanghao,CHENG Weimin,et al.Dust removel technology of eject sprying between hydraulic supports fully mechanized mining face[J].Journal of Central South University,2015,46(11):4384-4390.