CFD MODELLING OF THE DUST AND AIR VELOCITY BEHAVIOUR AT AN UNDERGROUND COAL MINE ROADWAY
Abstract
Dust pollution for ventilation systems is a big problem for mine workers in underground coal mines. The respirable dust concentration is important to the physical and spiritual health of miners. It is hazardous up to 2 mg/m3in the air in underground coal galleries. In the present work, the airflow velocity and dust concentration values were measured at Çay 1-Kartiye roadway in Kozlu, Zonguldak. The goal of this research is modelling to the dust concentration and airflow velocity values by the computational fluid dynamics (CFD) method. An airflow and dust fluid and solid model was done using the Eularian-Granular multiphase method with the k-epsilon two-equation model. The results showed that dust concentration values were too low and fixed. The error percentage of airflow velocity values changed between 5% and 17%. Thus, this roadway is safe for coal dust explorations.
Keywords
respirable dust, air velocity, CFD modeling, coal mine, mine safety
References
- Can, E., Kuşçu, Ş., and Mekik, C. (2012). Determination of Underground Mining Induced Displacements Using GPS Observations in Zonguldak-Kozlu Hard Coal Basin, Int. Jou. of Coal Geology, 89, 62-69.
- Candra, K.J., Pulung, S.A. and Sadashiv, M.A. (2014). Dust Dispersion and Management in Underground Mining Faces, Int. Jou. of Mining Science and Tech. 24, 39-44.
- Erol, I., Aydın, H., Didiari, V. and Ural, S. (2013). Pneumoconiosis and Quartz Content of Respirable Dusts in the Coal Mines in Zonguldak, Turkey, Int. Jou. of Coal Geology, 116-117, 26-35.
- Geng, F., Luo, G., Zhou, F., Zhao, P., Ma, L., Chai, H. and Zhang, T. (2017). Numerical Investigation of Dust Dispersion in a Coal Roadway with Hybrid Ventilation System, Powder Technology, 313; 260-271.
- Geng, F., Luo, G., Wang, Y., Peng, Z., Hu, S., Zhang, T. and Chai, H. (2018). Dust Dispersion in a Coal Roadway Driven by A Hybrid Ventilation System: A Numerical Study Fan, Process Safety and Environmental Protection, 113, 388-400.
- Ghaffari, M., Hoffman, A.C., Skjold, T., Eckhoff, R.K., and Wingerden, K.V. (2019). A Brief Review on the Effect of Particle Size on the Laminar Burning Velocity of Flammable Dust: Application in a CFD tool for Industrial Applications, Jou. of Loss Prev. in the Process Induatries, 62, 103929.
- Guo, X, and Zhang, Q, (2014). Analytical Solution, Experimental Data and CFD Simulation for Longitudinal Tunnel Fire Ventilation, Tunelling and Underground Space Technology, 307-313.
- Hu, S, Liao, Q., Feng, G, Huang, Y., Shao, H., Gao, Y. and Hu, F. (2020). Influences of Ventilation Velocity on Dust Dispersion in Coal Roadways, Powder Technology, 360, 683-694.
- Hurtado, J.P. and Acuna, E.I. (2015). CFD analysis of 58 Adit Main Fans Parallel Installation for the 2015-2019 Underground Developments of the New Level Mine Project, Applied Thermal Eng., 90, 1109-1118.
- Prostanski, D. (2015). Experimental Study of Coal Dust Deposition in Mine Workings with the Use of Empirical Models, Journal of Sustainable Mining, 14, 108-114.