Analysis on stability of land parcel of Fushun mining group headquarters by exploitation of west open-pit mine

Through calculation on the variation of deformation of land parcel of Fushun mining group headquarters on different exploitation conditions of west open-pit mine, the stability of land parcel of Fushun mining group headquarters has been analyzed. The analyzed results show that when the slope has been excavated to line D and the exploitation is on N1200, the influence for the stability of land parcel is smaller, but when the exploitation is on N1600, because of the concentrated distribution of displacement and obviously enlargement of the scope of plastic zone on the area between the fault F1 and F1A, the stability of land parcel has been changed obviously. At the aim of the security of land parcel of Fushun mining group headquarters, the excavation of slope should not be more than line D and the exploitation of coal stratum should not be more than N1200. The achieved results can provide a research foundation for a reasonable and orderly exploitation for Fushun west open-pit mine.