Practices on Irregular Fully Mechanized Top Coal Caving Mining Along with Fault and No Coal Pillar

In order to solve the coal resources seriously lost problem of the irregular fully mechanized top coal caving mining face along with fault,with the layout of the 3A401 coal mining face,the mining technique and other technical innovations,the irregular coal mining layout,the coal mining technique with the support and conveyor pans increasing or decreasing,coal caving in the mining gateway and coal caving at the face ends,the irregular fully mechanized top coal caving mining face along with the fault had a safety production with no coal pillars and the coal recovery rate was improved with over recovery coal resources of 140 thansand tons and a direct economic benefit of RMB 110 million Yuan.