Evaluation of the potential of pillarless mining of thick flat seams

V.S. Yel'kin

The author describes peculiar features of pillarless mining method and proves the opportunity of its efficient application for thick flat seam mining. The article also deals with the aspects of air distribution control pattern to be used with this mining method. It is proved that with the pillarless mining method application in thick seams the maximum permissaible coalface output depends on the type and cross-section of the ventilation channel located on the boundary with the mined-out area.