Three-dimensional tunnel face extrusion and reinforcement effects of underground excavations in deep rock masses

The design experience and the shallow tunnel theory, which emphasize the plane strain assumption, two-dimensional (2D) strength theory, and indoor or back analysis-based parameters of rock mass, should not be directly adopted for deep tunnel design. This paper reports the development of a digital ac...

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Veröffentlicht in:	International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2022-02, Vol.150, p.104999, Article 104999
Hauptverfasser:	Cai, Wuqiang, Zhu, Hehua, Liang, Wenhao
Format:	Artikel
Sprache:	eng
Schlagworte:	Active control method Compacting Compressive properties Control stability Convergence Criteria Deep tunneling Deformation effects Depth indicators Dynamic stability Excavation Generalized Zhang-Zhu strength criterion In situ intelligent acquisition Mathematical models Numerical models Parameters Plane strain Plastic zones Pre-extrusion and pre-convergence deformation Rock masses Rocks Stability analysis Tensile stress Three dimensional models Three-dimensional extrusion effect Tunneling Tunnels Unloading
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