Research On Surface Deformation Modeling And Visualization Of Mine Goaf

Ground deformation caused by mine goaf has a significant impact on mine safety production and engineering construction of the surface of the earth, the study of surface deformation rule of mine goaf has a certain significance.Based on the system research of professional literatureuu and field investigation, through the analysis of the surface monitoring surface subsidence visualization processing analysis, numerical simulation analysis,combined with the basic rules of surface movement deformation, surface subsidence rule of iron ore goaf of Xiao ling are studied. The main research contents and results are as follows:(l)Combined with Xiao ling ore geology, rock properties, exploitation situation and related theory, summed up the cause of formation of surface subsidence pit that the engineering geological condition is poor, on the plate of the surrounding rock stability is poor, and the ore mining method which are the main causes of ground collapse pit formation.(2)Through the analysis of Xiao ling iron ore the formation process of surface subsidence pit,the formation process of surface subsidence pit mining area is divided into four stages:stage of surface subsidence is not obvious, the surface subsidence acute phase, the surface subsidence area and at the bottom of the empty area connected phase, mobile phase gradient edge collapse pit level.(3)Around the sinkhole surface monitoring, the monitoring results show that the settlement of edge collapse pit tends is stable,horizontal movement is relatively active.(4)Use FLAC3D numerical simulation analyse ore surface subsidence. Divided into two middle for excavation, excavation results show that the maximum ground surface settlement of130middle excavation is0.59511m, maximum ground surface settlement of120middle is4.08m, the surface subsidence are increased, and the model rendering bend at the top of the arc, the surface may form a sag basin.(5)Surface subsidence visualization model is constructed. Realize surface subsidence isoline, curved surfaces, wireframes and various combination figure drawing, contour map digitization processing, contour map for cutting processing, the surface subsidence volume calculation, etc.