FLAC~(3D) Modeling of the Backfill Method Mining for Steeply Dipping Ore-body

The 3D finite difference program,FLAC3D,was used to establish two mining models of upward slicing and backfill method of different horizontal mining thickness for Yinchanggou and Qiluogou in Ningnan County,Sichuan Province,and the stability of the surrounding rock mass was analyzed.The results show that the mining thickness plays a decisive role in the stope stability,and that the appropriate goaf's exposing area is an efficient approach to control the risk evaluation of the surrounding rock masses for stope,and that the 3D finite difference program,FLAC3D,is effective in modeling the mining process of upward slicing and backfill method and the modeling results can be used as the important reference for the development of metal mines under the similar conditions.