Abstract: During the process of implement of large-diameter deep-hole stage open stoping method of a mine, according to the occurrence condition of ore body, feasibility of mining economic, production management and other situation, vertical ore body to the layout of the mine block and along the ore body to layout of the mine block were adopted.On the basis of rock mechanical properties study, numerical simulation was done on stope structural parameters of large-diameter deep-hole stage open stoping method of this mine by FLAC3D, and the parameters of ore block, ore room, pillar were determined.

Key words: Large-diameter deep-hole stage open stoping method, Pillar parameters, Numerical simulation