Research on the Air Leakage Law of Small Coal Pillars in the Comprehensive Mining Face of Dafosi Coal Mine
In order to effectively prevent spontaneous combustion of residual coal in the goaf of small coal pillar mining in Dafo-si Coal Mine,theoretical analysis,experimental testing,and on-site testing methods were adopted.Taking the small coal pillar mining in the 40103 working face of Dafosi Coal Mine as an example,the air leakage channel of the working face was tested and analyzed.The research results show that during the backfilling process of the 40103 working face,small coal pillars in the goaf are broken,and there is a smooth air leakage channel between the goaf and the 40104 goaf,with a maximum air leakage rate of 82 m/min.
small coal pillar miningcoal spontaneous combustionair leakage measurementleakage channel
万方数据
维普
