Application of Ventsim Model in Mine Ventilation and Spontaneous Combustion Control
Spontaneous combustion of residual coal from fully mechanized caving top coal is a long-term hazard in coal mines,and air leakage to goaf is the main driving factor of the hazard.When the working face of fully mechanized caving top coal works in multiple coal seams and shallow overburden layers,the cracks caused by coal mining are likely to draw fresh air into the goaf due to the pressure difference between the surfaces of the working face.In order to study this problem more deeply,a case study of Hongyuan Coal Mine was carried out using the ventilation simulation software package"Ventsim".It is found that isolating and pressurizing the top coal face,adjusting the pressure difference by changing the performance of the auxiliary fan and the resistance of the ventilation regulator,and adjusting the load of the fan by the booster ventilation system can effectively alleviate the problem of residual coal spontaneous combustion caused by ventilation.
ventilation simulationspontaneous combustionVentsim model
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