Study of Gas Delivery Feature Influenced by Movement of the Surrounding Rock of Fully-Mechanized Top Coal Caving

摘要

The mining of coalbed with high gas destroyed the coal in frontage of workface,the top-coal and the original texture of roof,the hole rate ofceal isfollowing changed,all those make corresponded changes of the modes of occurrence and transport pattern of gas in coal.The text based the result byunderground pressure observation and gas monitor for the 101 working face in the TingNan coal,educed the characteristics of gas emission under the infectionof surrounding rock in fully mechanized top-coal caving (FMTC) face.It provides theoretical base and technical support to directed fully mechanized sublevelcaving,effectively preventing gas disaster and reasonable draining and using gas resource.