Study on the Evolution Law of Mining Coal Permeability

摘要

The high strength mining,fully mechanized sub-level caving method etc.,have vital role to the gas permeable evolution in coal body.Taking the coalrock contained gas as subject to investigate under high strength mining condition,use the mining coal rock permeability real-time monitoring systemmonitoring the changes.We had conducted the research about coal rock permeability evolved rules in typical high gas,sick seam and high strength miningconditions.Through scene experiments confirmation,the real-time monitoring system for mining coal rock permeability has certain validity and usability tocoal rock permeability monitoring.The coal rock permeability of working field present increase,reduce and again elevate along with high strength mining.Quantitative coal rock permeability is basis of futly mechanized sub-level caving mining field gas disasters' control and management.