Study on Coal Spontaneous Combustion Law and Numerical Simulation of Gateway Driving Along Goaf in Wugou Mine
Abstract：In order to study the coal pillar in the gateway driving along the goaf of No.1021 coal mining face and the features of the spontaneous combustion in the adjacent goaf,according to the coal spontaneous combustion theory,the combined method of the temperature measurement of the site coal pillar,the potential energy measurement and the numerical simulation was applied to analyze the influence factors of coal spontaneous combustion in the gateway driving along the goaf.The results showed that the integrality of the coal pillar would be one of the main reasons to cause the ventilation leakage and the left coal spontaneous combustion.Under the condition of the numerical simulation prediction,after 2~3 months passed,the temperature of the left coal in the No 1017 goaf along the side was increased and the max temperature was below 60 ℃.When the coal pillar was further pressed by the strata pressure role,the ventilation leakage quantity would be increase,the temperature of the bulk coal along the goaf side would be increased and would have the coal spontaneous combustion danger.
Keywords：gateway driving along goafcoal pillarpotential energycoal spontaneous combustiongoafnumerical simulation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)