Abstract:In order to explore the safety impact relationship between surface structures and underground mining projects, and solve the contradictory community of underground mining and surface safety, this paper uses GIS geographic information software and Rhino+griddle modeling software to conduct three-dimensional modeling of the current terrain, construction (structure) distribution, underground ore body and reconstruction and expansion project of a gold mine. In addition, FLAC3D finite difference software was used to simulate the excavation of underground ore body. The simulation scheme was divided into non-filling mining scheme (the most unfavorable case) and upward horizontal slicing and filling mining scheme (the most conservative case). Considering the limitations of filling technology, the upward horizontal slicing and filling mining scheme was divided into empty top 1m and empty top 0.5m simulation. The surface displacement and deformation values generated by the two mining schemes meet the requirements of the Regulations on Coal pillar maintenance and coal pressing in Buildings, water bodies, Railways and Main shafts and lanes. The upward horizontal filling mining greatly reduces the displacement and deformation value of the surface, which is more conducive to the stability and safety of structures.
