Abstract: The rocks strength,structural weak surface and stability of rock and orebody of No.Ⅰ copper belt of Dahongshan Iron Mine is investigated.In view of the present situation that many production links of the point column upward stratified filling method in the mine need to be operated in empty field,the deep mining method of No.Ⅰ copper belt of the mine is optimized as:for the thicker orebody (thickness is greater than 7 m),sublevel open stoping and subsequent tailings filling method is the optimal mining method;for the medium thickness orebody (thickness is 4~7 m),the point column upward stratified filling method is the optimal mining method;for the thinner orebody (thickness is lower than 4 m),strip mining technique is the best mining method,besides that,the stope span should be reduced.The applicaiton of the above otpimized mining methods is help for ensuring the safety mining of the mine and improving the mining efficiency of the mine.

Key words: Deep mining, Point column upward stratified filling method, Sublevel open stoping and subsequent tailings filling method, Strip mining technique