Abstract: According to unstable roof, high grade and high value of difficult mining body, a copper mine in southern of Anhui improved the filling technology and optimized the mining technology parameter. The mining recovery rate improved from original of 75% to now of 95%, and support cost of mining stope also decreased from original of 25 Yuan/t to now of 22 Yuan/t. It has achieved good economic benefits.

Key words: Filling technology, Mining processing parameter, Improvement, Optimization