Abstract:Xiangbishan is one of the four sites for hanging-wall ore mining in the east open pit of Daye Iron Mine. Its geological condition is unfavorable and a landslide occurred once in its north slope. The hanging-wall ore to be mined is just located below the old slide,so whether the slide will be reactivated and how to control its deformation and stability are the key issues to be solved during mining operation. The geological condition and landslide history of the north slope are briefly introduced. It is predicted that the slope stability will be further worsened during the hanging-wall ore mining operation;so a mining scheme is proposed,which will keep some iron ore and use it as a retaining wall to control the deformation and stability of the slide. FLAC3D is used to verify the feasibility of the above scheme and optimize the mining sequence. The scheme is proved to be successful by mining practice and the iron ore retaining wall can efficiently improve the slope stability with no disastrous landslide occruing during mining operation. However,the measured deformation is greater than the predicted one.