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Pression limite et de fluage nette<br />

En site terrestre (figure de gauche) : σ vs<br />

=γ(z N<br />

-z s<br />

)<br />

On adopte généralement : u s<br />

=γ w<br />

(z w<br />

-z s<br />

)<br />

En site aquatique (figure de droite) : σ vs<br />

=γ w<br />

(z w<br />

-z N<br />

)+γ(z N<br />

-z s<br />

)

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