n order to ensure that the new building inclined shaft of Pingdingshan six mines pass fifth-sixth stope seam smoothly , based on the importance of real circumstance and effction range of the stope, the simulation test experimental way was used, the variation law of the overburden rock was studied while did mining process on fifth or sixth coal seam coal .The result of simulation test showed that after the exploration of mine, destruction to the overburden is appeared to have three zones feature. Height measurement and theoretical calculation get from simulation test confirmed to actual situation. It provide reference to the rock control and support measures for the stope roadway crossing the surrounding.