Abstract: In order to improve the production capacity of Wohushan iron ore and meet the production requirements,the mining methods that are suitable for underground mining of Wohushan ore is found out.From the geological conditions,contrast on advantages and disadvantages of the upward horizontal slice stoping-filling method with pointed pillars and the upward high horizontal slice stoping-filling method in production is made.It is obtained that the later is more suitable for 25~24 ore block.In order to get the reasonable structure parameters for the mining method and achieve safe & efficient mining,FLAC3D simulation software is adopted to make numerical simulation on distribution regularity of the surrounding rock stress and displacement at different mining scheme.Effect of different stopes widths on stope stability is studied,thus finding that the suitable widths of stope and pillar are 11 m and 9 m respectively.The bolt length is gained from the bolt length and the empirical formula used by the mines at home and abroad,and pre-control roof supporting method adopts bolt support.The results have guiding significance for stoping of other ore block.

Key words: Upward high horizontal slice, Bolt support, Numerical simulation, Pre-control roof