Abstract: The paper adopts three different approaches of mining entrances under the well in a copper mine.In order to study the stability of different approaches, three models are built by using ANSYS software basedon the field investigation and laboratory experiment, then led into FLAC^3D finite software. Adopting Moore -Coulomb failure criterion calculation, three different schemes of stress distribution are simulated in gravityconditions in order to study stability. Through the analysis of the maximal and minimum principal stress aftermining in three different mining entrances, the results indicate that the stability of mining vertical the orebody strike connected with the upper plate is the lowest.