Abstract: Based on the data obtained in the site geological survey and laboratory test，a mining model is built and numerical analysis is made of the orebody mining and filling processes by employing the large three-dimensional finite element software ABAQUS to obtain the distribution law of the stress field and displacement field for every construction step. The results show that when the method of upward horizontal slicing with cemented filling is used, cemented filling and tailings filling can be used to effectively control the stability of the wall rock of the stope. The filling body can effectively depress the stress release and deformation of the wall rock, thus retarding the release rate of the energy preserved in the rock strata so as to avoid the dynamic pressure such as impact ground pressure. A comprehensive assessment is also made of the stope stability and safety and some very beneficial conclusions are drawn.

Key words: Stope stability, Filling method, Finite element simulation