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NNN05 7-9 April 2005, Aussois, Savoie, France Large excavations in Europe By Michel LEVY

Large excavations in Europe By Michel LEVY excavations in Europe By Michel LEVY CARACTERISTIQUES MECANIQUES DU SCHISTE LUSTRE Au PM 2103 σ3 MPa σ1 MPa E GPa 0 0 5 10 46 ⁄⁄ 115

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NNN05

7-9 April 2005,

Aussois, Savoie, France

Large excavations in Europe

By Michel LEVY

CARACTERISTIQUES MECANIQUES DU SCHISTE LUSTRE

Au PM 2103

σ3 MPa

σ1 MPa E GPa

0 0 5

10

46 ⁄⁄ 115 ⊥ 128 ⊥ 120 ⊥

40 40 50 53

Au PM 4155

σ3 MPa

σ1 MPa E GPa

0 0

10 10 20 20 30 30

20 ⁄⁄ 60 ⊥ 70 ⁄⁄

122 ⊥ 89 ⁄⁄

147 ⊥ 86 ⁄⁄

155 ⊥

- -

26 39 33 43 40 40

Au PM 6678

σ3 = 0 σ1 = 110 ⊥ σ1 ∼ 80 ⁄⁄