Abstract: Due to the underground mining activities can change the natural gas field of the surrounding rock physical environment,surrounding rock produces displacement and deformation,in order to control the displacement of surrounding rock produced by mining activities,analyze the mechanical properties of the orebodies and surrounding rock,geological structure of rock mass,peripheral stress conditions and underground hydrological conditions of the orebodies and surrounding rock in the area that may be affected by mining activities,taking a copper mine as an example,the upward horizontal stratified cemented filling method and shallow hole shrinkage backfilling method are adopted to conduct the numerical simulation analysis of underground mining engineering of the mine,so as to study the influence of mining activities to the stability of surface ancient bronze mine site.The study results show that the stability of surrounding rock by using upward horizontal stratified cemented filling method is better than the one by using shallow hole shrinkage backfilling method,which is help for ensuring the safety of surface buildings in the mining area.

Key words: Underground mining, Upward horizontal stratified cemented filling method, Shallow hole shrinkage backfilling method, Numerical simulation