纪大波,方晓,曹廷校,白和强,王洪强
JI Da-bo,FANG Xiao,CAO Yan-xiao,BAI He-qiang,WANG Hong-qiang

• 1:北京奥信化工科技发展有限责任公司
• 2:万宝矿产(缅甸)铜业有限公司
• 3:北方爆破科技有限公司

摘要(Abstract)：

以缅甸莱比塘铜矿为研究对象,开展露天爆破粉尘测量方法的研究。采用数码相机对爆破粉尘进行摄影,获取了不同浓度粉尘图像灰度值数据,通过对粉尘浓度实际测量,建立了粉尘浓度值与图像灰度值的数学关系,分析粉尘图像灰度特征获得了粉尘浓度空间分布规律,计算得到起爆后某一时刻爆区空气爆破粉尘总量。研究结果表明:爆区正侧方50m处起爆后96s内平均粉尘浓度为1 602mg/m~3;粉尘浓度与粉尘图像灰度的比例系数k为9.117mg/m~3;起爆后30s时形成粉尘体的浓度由内向外逐渐降低,边缘浓度急剧降低,宽度方向浓度近似相等;起爆后30s时空气中爆破粉尘总量为864.91kg。
Letpadaung copper mine in Myanmar was taken as a research object,and the method of measuring the amount of dust in open-pit blasting was carried out.A digital camera was used to shoot the blasting dust,and the gray value data of dust images with different concentrations was obtained.Based on the actual measurement of the dust concentration,the mathematical relationship between the dust concentration value and the image's gray value was established.The spatial distribution of dust concentration was obtained by analyzing the gray features of dust image.The total amount of blasting dust at some point after the initiation in air was calculated.The results showed that the average dust concentration was 1 602mg/m~3 within 96 safter the initiation in the positive side 50 mof the blasting area.The ratio k of the dust concentration gray value to the dust image was 9.117mg/m~3.The concentration of dust body formed at 30 safter the initiation gradually decreased from the inside to the outside,that of the body edge decreased sharply,and the concentration in width direction was approximately equal,the total amount of blasting dust in air was 864.91 kg at 30 safter initiation.

关键词(KeyWords)： 露天爆破;粉尘量;图像处理;灰度值
open-pit blasting;dust amount;image processing;gray value

Abstract:

Keywords:

基金项目(Foundation): 露天矿山爆破降尘技术与研究资助项目

作者(Author): 纪大波,方晓,曹廷校,白和强,王洪强
JI Da-bo,FANG Xiao,CAO Yan-xiao,BAI He-qiang,WANG Hong-qiang

参考文献(References)：

• [1]田贻丽.粉尘浓度测量方法的研究[D].重庆:重庆大学,2003:45-56.TIAN Y L.Study on measurement method of dust concentration[D].Chongqing:Chongqing University,2003:45-56.
• [2]王乃宁.颗粒粒径的光学测量技术及应用[M].北京:原子能出版社,2000:32-48.WANG N N.Optical measurement technology and application of particle size[M].Beijing:Atomic Energy Press,2000:32-48.
• [3]晋良海.露天梯段爆破粉尘体积分散度的分形表达[J].中国安全科学学报,2016,26(8):141-144.JIN L H.Fractal expression of volume dispersion of blasting dust in open-pit[J].China Safety Science Journal,2016,26(8):141-144.
• [4]杜海文,韩天一,王世英,等.基于图像分析的云雾浓度分布特性研究[J].弹箭与制导学报,2016(3):166-168,175.DU H W,HAN T Y,WANG S Y,et al.Study on distribution characteristics of cloud concentration based on image analysis[J].Journal of Projectiles,Rockets,Missiles and Guidance,2016(3):166-168,175.
• [5]姜同林.基于CCD图像的粉尘浓度空间分布测量研究[D].南京:南京理工大学,2016:31-45.JIANG T L.Study on spatial distribution of dust concentration based on CCD image[D].Nanjing:Nanjing University of Science and Technology,2016:31-45.
• [6]李易昭.云爆弹云雾生长规律及浓度测试方法研究[D].南京:南京理工大学,2016:20-35.LI Y Z.Study on the law of cloud growth and concentration test of cloud bulb[D].Nanjing:Nanjing University of Science and Technology,2016:20-35.