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- W2364781650 abstract "For open stope mining,we established a cusp catastrophe model for describing instability of pillar for predicting the failure law of mining pillars based on fracture mechanics and catastrophe theory.Concretely,by assuming an open stope whose mining thickness is much less than the stope span as a series of co-linear cracks in an infinite plate with a certain space interval,we obtain the failure width of mining pillar by adopting the fracture mechanics Mode I,the crack model,to get the formula for calculating the failure width.Based on the catastrophe theory,we take the instability resistance factor and pillar destruction factor as the control variables,and the strength ratio of pillar stress(Fq) as the state variable.The results show that,if Fq1,mine pillars will be destroyed,while if Fq1,mine pillars will not be destroyed.The application results show that this model used to analyze stability of mine pillar meets the requirement of engineering." @default.
- W2364781650 created "2016-06-24" @default.
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- W2364781650 date "2011-01-01" @default.
- W2364781650 modified "2023-09-23" @default.
- W2364781650 title "Analysis of the Failure Law and Stability of the Pillar in Open Stope Mining" @default.
- W2364781650 hasPublicationYear "2011" @default.
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