Abstract: Many goafs can be left by using open stope mining method.The safety production and effective recycling of mineral resources of mine are affected by the existence of goaf,which caused the loss of mineral resources.The main mining methods of Linong Ore Section of Yangla Copper Mine are chassis funnel open stoping method,comprehensive method,nearsurface caving method and roomandpillar mining method.After many years mining production,the volume of goaf is reached to 1 175 500 m3.Based on the actual production situation of the mine,the filling scheme is adopted to deal with the goaf,and the filling scheme is optimized by using FLAC3D numerical simulation method,and the filling method and filling body strength are determined.The above study results related to the optimization of goaf filling scheme of Linong Ore Section of Yangla Copper Mine can provide some reliable reference for goaf treatment of the mine or the similar mines.

Key words: Open stoping method, Goaf, FLAC3D, Filling scheme