Both methods are applied for 2D and 3D FE-modelling.įindings. The second calculation method involves the Phi-c (the angle of internal friction and bonding) reduction method, which is based on calculating the safety factor of the shear strength of the soil. The first one is done by reducing the applied face pressure until the face is collapsed. Tunneling is executed by the NATM method two types of calculations are used. Two-dimensional (2D) and three-dimensional (3D) Finite Element (FE) modeling using PLAXIS programs. This work aims to study the tunnel face stability (Algiers subway Tunnel) and evaluate common numerical procedures that are used for analyzing the tunnel face stability. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. Y.Khadri, Badji Mokhtar University, Annaba, Algeria, e-mail: This email address is being protected from spambots.
Y.Mehidi, Larbi Tebessi University, Tebessa, Algeria
S.Yahyaoui, National Polytechnic School, Algiers, Algeria I.Kahoul, Badji Mokhtar University, Annaba, Algeria, e-mail: This email address is being protected from spambots.
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