Three-dimensional effect of stresses in open stope mine design
Трёхмерный эффект напряжений при проектировании открытых выработок
2017-04-19
SCID: 54.1/vnznt7g7
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induced stressesopen stope mine designstability graph methodthree-dimensional numerical models
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Abstract (AI)
The stability graph method is widely used for open stope mine design. During the development of the method the effect of induced stresses were included by using two-dimensional or limited three-dimensional stress analysis. In this paper, three-dimensional numerical models are used to develop new induced stress curves, and to evaluate the effects on the stability graph method and open stope mine design. Significant differences are identified for the estimated stresses at the wall of the stopes, leading to an increase of the size of the stopes.
Key Findings
1
The updated induced stress curves affect the stability graph method and consequently alter open stope mine design recommendations.
2
Three-dimensional numerical models were used to develop new induced stress curves for open stope mine design.
3
Three-dimensional stress analysis yields significant differences in estimated stresses at stope walls compared to prior two-dimensional or limited 3D analyses.
4
Using the new 3D-induced stress results leads to an increase in the allowable size of stopes in stability graph-based designs.
Research Object
Open stope mine stopes and their surrounding rock mass analyzed with three-dimensional numerical stress models
Research Subject
Three-dimensional induced stress distributions/effects at stope walls and their impact on the stability graph method and resulting stope size/design
Publication Details
Publication Date
2017-04-19
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