Safety impact of underground mining on surface buildings(structures)in a mine
To scientifically predict the safety impact of underground mining in mines on buildings(structures)such as villages and residential buildings,and to prevent mining activities from causing damage to buildings(struc-tures),this study utilized the theory of surface rock movement and deformation to calculate the maximum surface sub-sidence,impact radius,maximum surface inclination rate,maximum surface curvature,and maximum surface horizontal deformation values of the main ore body based on mine geological and design data.The theoretical protection level was determined.Flac3D numerical simulation software was used to simulate the mining process in the mine,analyze and summarize the variation patterns of surface subsidence and deformation.Through theoretical formula calculations,the maximum surface inclination rate,curvature,and horizontal deformation values on the mine area were found to be 0.063 mm/m,1.6×10-6 m-1,and 3.7 mm/m,respectively,which are less than the allowable deformation values corresponding to the protection level of surface buildings(structures).The surface deformation values were consistent with the displacement data of the surface monitoring points set up.The research results indicate that,based on mining according to design requirements,the surface deformation caused by mining activities will not pose a threat to the safety of surface buildings(structures),providing a theoretical basis for mine construction and safety production.
万方数据
维普
