Triaxial stress state of cylindrical openings for rocks modeled by elastoplasticity and strength criterion

Triaxial stress state of cylindrical openings for rocks modeled by elastoplasticity and strength criterion

An analytical solution for calculating the triaxial stress state around a cylindrical opening in an elastoplastic cohesive medium is developed. Magnitude of the slip zones around a cylindrical opening in crack-weakened rock masses is considered by modifying the existing strength criterion for rocks...

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Veröffentlicht in:Theoretical and applied fracture mechanics 2010-02, Vol.53 (1), p.65-73
Hauptverfasser: Zhou, X.P., Bao, X.R., Yu, M.H., Xie, Q.
Format: Artikel
Sprache:eng
Schlagworte:
Axial stress
Circular underground openings
Criteria
Elastoplasticity
Fracture mechanics
Mathematical analysis
Mathematical models
Modified strength criterion
Rocks
Slip zones
Strength
Triaxial stress state
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Beschreibung
Zusammenfassung:An analytical solution for calculating the triaxial stress state around a cylindrical opening in an elastoplastic cohesive medium is developed. Magnitude of the slip zones around a cylindrical opening in crack-weakened rock masses is considered by modifying the existing strength criterion for rocks of different types. The disturbance coefficient, the geological strength index and the other strength parameters are also investigated.
ISSN:0167-8442
1872-7638
DOI:10.1016/j.tafmec.2009.12.006