Cause analysis and control measures of air leakage in fully mechanized caving face
Air leakage in coal mines can reduce the effective air volume rate,increase the useless power consumption,and cause spontaneous combustion of residual coal in goaf of coal mining face,thereby bring hidden dangers to mine safety production.By adopting the methods of combining the ground and underground to prevent the air of fully mechanized working face from entering the goaf,including reducing the air leakage channels,decreasing the pressure difference between the two ends of the working face,reducing the air distribution volume of the working face,and backfilling the cracks in the surface subsidence area in time,so as to reduce the air leakage of the working face and ensure the safe and smooth mining of the working face.
fully mechanized caving faceair leakage in working facespontaneous combustionair pressure differencesurface backfillingsurface subsidence
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