.. _V3.02.105:

**v3.02.105** SSLP105 - Excavation of a circular tunnel in a linear elastic mass
============================================================================================

**Summary:**

This test is an example of the implementation of a global methodology for the two-dimensional simulation of the digging and support of a circular gallery in an underground mass with *Code_Aster*.

To validate the approach on the basis of a simple analytical solution, we are required to make restrictive hypotheses about the geometry of the problem, the behavior of the materials (linear elastic) and the initial stress field (isotropic). The reference solution is given by the so-called "convergence-confinement" method, which is classical for this type of 2D modeling. For more details on the methodologies used, refer to the documentation [:ref:`U2.04.06 <U2.04.06>`].


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Synth_se_des_r_sultats