Dust dispersion analysis based on the Rosen-Rammler Distribution Function
Résumé
According to the principle of deriving mine dust distribution from the Rosen-Rammler distribution function, dust particle size distribution data at four places on the 4339 working face in Wangzhuang Coal Mine were regression-analyzed so as to get the dust particle size distribution law. The results show that in the area of 5 m away from the working face in the intake airway, the percentages of mine dust of less than 5μm, 5 to 10μm and larger than 10μm in particle size are 14.8%, 32.5% and 52.7%, respectively, with a concentrated distribution of 5 to 20μm. The size of mine dust concentrates in the range of 5 to 10μm for the transfer point, in the range of 5 to 10μm for the 50# support of the working face, and in the range of 5 to 20μm for the area of 20 m away from the working face in the outlet lane. Some corresponding dust-proof suggestions were finally put forward on the basis of the characteristic of mine dust distribution in different places.Références
Bhaskar, R. (1988). Experimental studies of dust disperition in mine airways. Mining Engineering. No. 3, pp. 191-195.
Dai, L.Y. (2000). Research on the Rosin-Rammler particle size distribution function. Industrial Safety and Dustproof. Volume 16, No.3, pp. 15-17.
Isabelle, D., Jean-Luc, H., and Bernard, B. (2000). Taking-off modal of particles with a wide size distribution. Chemical Engineering and Processing. Volume 44, pp. 160-162.
Jin, L.Z. (1993). Coal Mine Dust Control. Beijing, Coal Industry Press, 318p.
Liu, Y., Jiang, Z.A., Cai, W., Zhou, F.Z., Guo, D., and Liu, B.D. (2007). Numerical simulation of the dust movement rule in fully-mechanized coal faces. Journal of University of Science and Technology Beijing. Volume 29, No.4, pp. 351-353.
Ou, S.N. (2006). Researches and experimentation of the synthetical dust-prevention technology in Weijiadi Coal Mine. Beijing, Civil & Environment Engineering School, University of science and technology Beijing.
Qi, H.G., Jin, L.Z., and Fu, Q.G. (2006). Research and Application of efficient fire suppression and dustproof material. Beijing, Coal Industry Press, 163p.
Shi, C.H., Ou, S.N., and Jin, L.Z. (2007). A study and analysis on the law of motion of the coal dust. Journal of University of Science and Technology Beijing. Volume 29, No.2, pp. 1-5.
Wang, B., and Hu, S.X. (1994). Study on the law of mine dust distribution in Tie jing shan. China mining. Volume 1, No.3, pp. 71-72.
Wang, C.B. (1991). Measurement results and analysis of dust dispersion. Safety in coal mines. No.5, pp. 26-27.
Zhen, G.B., Kang, T.H., Cai, Z.Y., and Yin, Z.H. (2006). Applied the Rosin-Rammler Distribution Function to Study on the Law of Coal Dust Particle-Size Distribution. Journal of Taiyuan University of Technology. Volume 37, No.3, pp. 317-319.
