Research On Stope Stability And Mining Sequence In A Mine

There is a serious problem that mineral resources are drying up before a mine which has operated a long time.To the mine it is important to recycle the residual resources in #0 stope in the S#320 stage.This paper use theoretical method and numerical analysis to analysis the stability of the stope.Based on that this paper also design a stope collapse.The main research contents and results are as follows:1.On the basis of collecting,collating and analysing of relevanttechnical information on the collapse area,obtained the physical and mechanical parameters of rock collapse area.2.This paper uses the cush mutation theory to analysis the stability of horizontal pillar.By using FLAC3 D to numerical simulation the exploitation process,this paper analysis the stability of stope,and use that as the basics to the next research.3.Based on the stability of stope,this paper design 8 mining programs,through comparing the calculation results to choose the best program.By that this paper find that the stability of stope will be influenced by other stopes in the same stage,filing the goaf can reduce the degree of stress concentration and that increasing the routes reasonably is good to ensure the stability of the stope.4.Use microseism monitoring,this paper find the pictures of microseismic events distribution,energy index&apparent pictures volume pictures and displacement contours of S#280stage and S#320 stage.Trough the calculation results this paper can ensure the degree of the stope stability.