Advanced grid anchored minerless mining method for coal mine


Application Number  00129360 Application Date  2000.11.27
Publication Number  1355374 Publication Date  2002.06.26
Priority Information    
International
Classification
 E21C41/18  
Applicant(s) Name  Resource and Environment Engineering College, Shandong Science and Technology Un  
Address    
Inventor(s) Name  Tan Yunliang;Wang Yingjian;Guan Jie  
Patent Agency Code  37104 Patent Agent  zhao rongqun
AbstractA grid mining method for coal mine includes such steps as excavating the grid galleries including starting cut and crosheading; mining while digging by 30-40 m before working face, anchoring props in advance; drilling deep blast hole and exploding in cross heading for losening coal, using a winch under working face to drive scraper back and forth to mine the coal. Its advantages include no need of props on working face, no residual ground coal and sill pillars, minerless mining, and high efficiency.