[1]蒋仲安,姜兰,陈举师.露天矿潜孔打钻粉尘浓度分布规律数值模拟[J].深圳大学学报理工版,2013,30(No.3(221-330)):313-318.[doi:10.3724/SP.J.1249.2013.03313]
 Jiang Zhongan,Jiang Lan,and Chen Jushi.Numerical simulation of dust concentration distribution regularities of down-the-hole drilling in open-pit mine[J].Journal of Shenzhen University Science and Engineering,2013,30(No.3(221-330)):313-318.[doi:10.3724/SP.J.1249.2013.03313]
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露天矿潜孔打钻粉尘浓度分布规律数值模拟()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第30卷
期数:
2013年No.3(221-330)
页码:
313-318
栏目:
环境与能源
出版日期:
2013-05-19

文章信息/Info

Title:
Numerical simulation of dust concentration distribution regularities of down-the-hole drilling in open-pit mine
文章编号:
20130315
作者:
蒋仲安姜兰陈举师
北京科技大学土木与环境工程学院,教育部金属矿山高效开采与安全重点实验室,北京 100083
Author(s):
Jiang Zhongan Jiang Lan and Chen Jushi
Key Laboratory of Ministry of Education of China for Efficient Mining and Safety of Metal Mines, School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P.R.China
关键词:
安全技术露天矿潜孔打钻湿式除尘粉尘浓度气固两相流几何模型数值模拟尘肺病
Keywords:
safety technology open-pit mine down-the-hole drilling wet dust removal measure dust concentration gas-solid two-phase flow geometric model numerical simulation pnenmoconiosis
分类号:
TD 714.2
DOI:
10.3724/SP.J.1249.2013.03313
文献标志码:
A
摘要:
根据气固两相流原理建立潜孔打钻三维几何模型,利用Fluent模拟不同边界条件下打钻时粉尘浓度的分布规律,并与现场实测数据比较,模拟结果与实测数据基本一致.研究表明,粉尘浓度在孔口水平取得最大值,沿自然风流方向渐减,且在钻机侧面及后部有粉尘积聚现象;钻具转速对粉尘浓度影响不明显;当钻孔深度为10 m、风速为1.4 m/s及工作风压为0.98 MPa时,粉尘浓度最小;捕捉壁面条件下粉尘浓度较反弹壁面低许多.针对潜孔打钻产尘的特点,建议在钻孔位置采取湿式除尘效果更佳.
Abstract:
According to the principles of gas-solid two-phase flow, a 3D geometric model of down-the-hole drilling was established. After that, dust concentration distribution of different boundary conditions were simulated by using software Fluent. The results found that the simulation results were basically consistent with the measured data. Also, the research showed that: the dust concentration obtained the maximum value in the position of the orifice level, then it gradually reduced along the direction of natural wind while some dust accumulated in the side and rear of the rig. In addition, dust concentration was not obviously effected by drilling speed, and it achieved its minimum value under condition of drilling depth in 10 m, wind speed in 1.4 m/s, and air pressure in 0.98 MPa. What’s more, dust concentration under trap-wall condition is much smaller than the reflect-wall. According to characteristics of dust production of down-the-hole drilling, wet dust removal measures taken in the drilling position should be strengthened in order to achieve better effect.

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备注/Memo

备注/Memo:
Received:2013-01-30;Accepted:2013-04-12
Foundation:Project of Science and Technology of Zhejiang Province (2011C23063); National Natural Science Foundation of China (51274024)
Corresponding author:Professor Jiang Zhongan. E-mail: jza1963@263.com
Citation:Jiang Zhongan, Jiang Lan, Chen Jushi. Numerical simulation of dust concentration distribution regularities of down-the-hole drilling in open-pit mine[J]. Journal of Shenzhen University Science and Engineering, 2013, 30(3): 313-318.(in Chinese)
基金项目:浙江省科技计划资助项目(2011C23063);国家自然科学基金资助项目(51274024)
作者简介:蒋仲安(1963-),男(汉族),浙江省诸暨市人,北京科技大学教授、博士生导师. E-mail:jza1963@263.com
引文:蒋仲安,姜兰,陈举师. 露天矿潜孔打钻粉尘浓度分布规律数值模拟[J]. 深圳大学学报理工版,2013,30(3):313-318.
更新日期/Last Update: 2013-05-19