绿色矿冶

In order to study the impact of underground mining process on surface artifacts of a mine, combined with the engineering geological conditions of the mine, three mining schemes were proposed considering different mining ranges, mining sequences and pillar retention, and a three-dimensional numerical model of the mine back-mining process has been established by using Flac3D numerical simulation software, which analyzed the surface tilt, curvature and horizontal deformation of the mine under the different mining schemes, revealed the spatial and temporal evolution characteristics of surface deformation of the mine under the different mining schemes, and determines the optimal mining scheme for the mine. The study shows that: compared with mining scheme 1 and 2, mining scheme 3 can effectively reduce the surface deformation caused by underground mining; mining scheme 3, after all the ore bodies are mined, the deformation value of the surface is less than the permissible value of “Code for Design of Nonferrous Metal Mining”, when the protection level of the buildings and structures is class I. The results of this study can be used for the safety of mines and for the development of the mining industry. The results of this study can provide technical guidance and decision-making basis for the safe and efficient production of mines, and are of great significance for the protection of surface cultural relics.