Airflow Analysis of a Large-Opening Limestone Mine using Computational Fluid Dynamics

Jongmyung Park; Minsik Kim

doi:10.32390/ksmer.2023.60.4.242

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2023 Vol.60, Issue 4 Preview Page Next Page

Technical Report

Airflow Analysis of a Large-Opening Limestone Mine using Computational Fluid Dynamics 전산유체역학을 이용한 대단면 석회석 광산의 공기유동 해석

31 August 2023. pp. 242-251

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Abstract

Turbulent air flow at a whole limestone mine in Korea is analyzed using ANSYS CFX with the shear stress transport turbulence model. The entire mine’s galleries are constructed with numerical grids to analyze the airflow for the limestone mine’s ventilation. Steady-state results present the velocity distributions, streamlines, total pressures, vorticities, and eddy viscosity. Furthermore, modeling of SF₆ diffusion within the tunnels reveals the distinctive traits of turbulent dispersion. In mine ventilation problems, computational fluid dynamics (CFD) has proven its applicability not only in a local tunnel but also in the entire network of mining tunnels.

Keywords

mine ventilation

entire mine tunnels

CFD

SF₆ dispersion

airflow velocity

국내 석회석 광산의 전체 갱도 기류를 ANSYS CFX 코드를 이용하고 SST (shear stress transport) 난류 모델을 사용하여 해석하였다. 광산의 모든 갱도를 수치격자로 생성하고 석회석광산의 갱도내 공기유동을 분석하였다. 분석 결과로 광산 전체 갱도에서 속도 분포, 유속, 압력, 와도 및 난류점성계수등과 SF₆ 가스의 뚜렷한 난류 확산 특징등을 제시하였다. 광산 통기 문제에 대해서는 전산 유체 역학이 국부적인 영역에 국한되지 않고 광산 전체 통기 네트워크에 적용 가능함을 확인하였다.

키워드

광산통기

광산전체갱도

CFD

SF₆ 확산

기류속도

References

Arpa, G., Widiatmojo, A., Widodo, N.P., and Sasaki, K., 2008. Tracer gas measurement and simulation of turbulent diffusion in mine ventilation airways, Journal of Coal Science & Engineering, 14(4), p.523-529. 10.1007/s12404-008-0401-x

Diego, I., Torno, S., Torano, J., Menendez, M., and Gent, M., 2011. A practical use of CFD for ventilation of underground works, Tunnelling and Underground Space Technology, 26, p.189-200. 10.1016/j.tust.2010.08.002

Kim, M., Park, J., Jo, Y., Lee, D., and Yi, H., 2021. Numerical Investigation of Characteristics of Mine Ventilation Using One or Two Ducts in Underground Mining Faces, Proceedings of the International Conference on Innovations for Sustainable and Responsible Mining: ISRM 2020, vol.1, p.245-262. 10.1007/978-3-030-60839-2_13

Kurnia, J.C., Sasmito, A.P., and Mujumdar, A.S., 2014a. CFD simulation of methane dispersion and innovative methane management in underground mining faces, Applied Mathematical Modeling, 38, p.3467-3484. 10.1016/j.apm.2013.11.067

Kurnia, J.C., Sasmito, A.P., Wong, W.Y., and Mujumdar, A.S., 2014b. Prediction and innovative control strategies for oxygen and hazardous gases from diesel emission in underground mines, Science of the Total Environment, 481, p.317-334. 10.1016/j.scitotenv.2014.02.05824607396

Laporthe, S., Virgone, J., and Castanet, S., 2001. A comparative study of two tracer gases: SF₆ and N₂O, Building and Environment, 36, p.313-320. 10.1016/S0360-1323(00)00005-6

Lee, C., Dec, N.Y., Kubuya, K.R., and Kim, C.O., 2018. A study on the ventilation effects of the shaft development at a local limestone mine, Tunnel & Underground Space, 28(6), p.609-619.

Niu, W., Jiang, Z., and Tian, D., 2011. Numerical simulation of the factors influencing dust in drilling tunnels: Its application, Mining Science and Technology (China), 21, p.11-15. 10.1016/j.mstc.2010.12.009

Park, J., Jo, Y., and Park, G., 2018. Flow characteristics of fresh air discharged from a ventilation duct for mine ventilation, Journal of Mechanical Science and Technology, 32(3), p.1187-1194. 10.1007/s12206-018-0222-9

Park, J., Park, S., and Lee, D., 2016. CFD modeling of ventilation ducts for improvement of air quality in closed mines, Geosystem Engineering, 19(4), p.177-187. 10.1080/12269328.2016.1164090

Parra, M.T., Villafruela, J.M., Castro, F., and Mendez, C., 2006. Numerical and experimental analysis of different ventilation systems in deep mines, Building and Environment, 41, p.87-93. 10.1016/j.buildenv.2005.01.002

Sasaki, K., Widiatmojo, A., Widodo, N.P., Arpa, G., and Sugai, Y., 2008. Numerical simulation on diffusion phenomena in mine air ways by using a method of discrete tracer movements, 12th U.S./North American Mine Ventilation Symposium, Wallace, Reno, Nevada, USA, p.287-292.

Thimons, E.d., Bielicki, R.J., and Kissell, F.N., 1974. Using Sulfur Hexafluoride as a Gaseous Tracer to Study Ventilation Systems in Mines, Bureau of Mines Report of Investigations, United States Department of the Interior, USA.

Torano, J., Torno, S., Menendez, M., and Gent, M., 2011. Auxiliary ventilation in mining roadway driven with roadheaders: Validated CFD modeling of dust behaviour, Tunnelling and Underground Space Technology, 26, p.201-210. 10.1016/j.tust.2010.07.005

Torno, S., Torano, J., Ulecia, M., and Allende, C., 2013. Conventional and numerical models of blasting gas behaviour in auxiliary ventilation of mining headings, Tunnelling and Underground Space Technology, 34, p.73-81. 10.1016/j.tust.2012.11.003

Wala, A.M., Vytla, S., Taylor, C.D., and Huang, G., 2007. Mine face ventilation: A comparison of CFD results against benchmark experiments for the CFD code validation, Mining Engineering, 59, p.49-55.

Widodo, N.P., Sasaki, K., Gautama, R.S., and Risono, 2008. Mine ventilation measurements with tracer gas method and evaluations of turbulent diffusion coefficient, International Journal of Mining, Reclamation and Environment, 22(1), p.60-69. 10.1080/17480930701474869

Xu, G., Jong, E.C., Luxbacher, K.D., Ragab, S.A, and Karmis, M.E., 2015. Remote characterization of ventilation systems using tracer gas and CFD in an underground mine, Safety Science, 74, p.140-149. 10.1016/j.ssci.2015.01.004

Yi, H., Kim, M., Lee, D., and Park, J., 2022. Applications of computational fluid dynamics for mine ventilation in mineral development, Energies, 15(22), p.8405-8429. 10.3390/en15228405

Yi, H., Park, J., and Kim, M.S., 2020. Characteristics of mine ventilation air flow using both blowing and exhaust ducts at the mining face, Journal of Mechanical Science and Technology, 34(3), p.1167-1174. 10.1007/s12206-020-0218-0

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 60
No :4
Pages :242-251
Received Date : 2023-06-16
Revised Date : 2023-07-19
Accepted Date : 2023-08-28
DOI :https://doi.org/10.32390/ksmer.2023.60.4.242

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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