Keywords: mining, CFD modelling, spontaneous combustion, early detection, computational fluid dynamics, gas sampling locations, long–wall gob areas, carbon monoxide, bleeder ventilation, simulation, bleederless ventilation
CFD modelling of sampling locations for early detection of spontaneous combustion in long–wall gob areas
In this study, computational fluid dynamics (CFD) modelling was conducted to optimise gas sampling locations for the early detection of spontaneous heating in longwall gob areas. Initial simulations were carried out to predict carbon monoxide (CO) concentrations at various regulators in the gob using a bleeder ventilation system. Measured CO concentration values at these regulators were then used to calibrate the CFD model. The calibrated CFD model was used to simulate CO concentrations at eight sampling locations in the gob using a bleederless ventilation system to determine the optimal sampling locations for early detection of spontaneous combustion.