December 2022
Volume 74    Issue 281

Investigation of explosion hazard in longwall coal mines by combining CFD with a 1/40th-scale physical model

Juganda, A.; Pinheiro, H.; Wilson, F.; Sandoval, N.; Bogin, G.E.; Brune, J.F.


To evaluate methane explosion hazards in underground longwall coal mines, researchers at the Colorado School of Mines developed a computational fluid dynamics (CFD) model along with a 1/40th-scale, optically accessible, physical model of a longwall mining section. In this project, CFD models assisted in the design of the physical model to ensure specifications were met to accurately represent the scaling physics as well as to assist in narrowing the experimental matrix and identifying key locations for sensor placement to measure velocity, pressure and gas concentrations. This research will help develop strategies for methane monitoring to prevent methane ignitions and explosions in longwall coal operations.

Full-text paper:
Mining, Metallurgy & Exploration (2022) 39:2273–2290,


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