Abstract:The characteristic of a certain metal ore body is a gently inclined and thick ore body with shallow burial depth, developed rock joints and fissures, and the presence of roads and buildings on the surface. Underground mining may have an impact on the surface buildings and roads in the mining area. To solve the above problems, this article selects the mining schemes of large-diameter deep hole lateral collapse and deep hole open pit method in chassis trenches. FLAC3D software is used to simulate and analyze the deformation laws of the mining surface movement and settlement mechanism caused by filling mining, and the differences in surface movement and deformation under filling and unfilled conditions are compared and analyzed. Research has shown that the filling mining method can make the surface rock move towards continuous deformation and uniform subsidence, effectively enhancing the safety protection level of mining surface structures, and has feasibility.
