Stability Analysis and Evaluation of Multi-layer Goaf of Iron Deposit
Author(s): Ren Jiaxin, Chenchao, School of Mining Engineering, North China University of Science and Technology, Heishan Iron Mine, Hebei Iron & Steel Group Co., Ltd.
Pages: 12-14+33
Year: 2016 Issue: 7
Journal: Express Information of Mining Industry
Keyword: Goaf; Numerical simulation; Stability analysis;
Abstract: The stability of the goaf of a underground mine is analyzed by adopting ANSYS numerical simulation software. The goaf with the characteristics of difference section height and large expose area is taken as the study example to establish numerical model,the model boundary conditions and physical parameters. The simulation results show that under the action of gravity stress,after the excavation of the orebody,the goaf is maintained a relatively stable state,the overlapping parts of the goafs of different section on the spatial location is easy to cause the stress concentration phenomenon,therefore,the safe hidden trouble is existed.
Pages: 12-14+33
Year: 2016 Issue: 7
Journal: Express Information of Mining Industry
Keyword: Goaf; Numerical simulation; Stability analysis;
Abstract: The stability of the goaf of a underground mine is analyzed by adopting ANSYS numerical simulation software. The goaf with the characteristics of difference section height and large expose area is taken as the study example to establish numerical model,the model boundary conditions and physical parameters. The simulation results show that under the action of gravity stress,after the excavation of the orebody,the goaf is maintained a relatively stable state,the overlapping parts of the goafs of different section on the spatial location is easy to cause the stress concentration phenomenon,therefore,the safe hidden trouble is existed.
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