Earth dam

Hi all!

I’m new to Salome and CAE linux, which, by the way, I find excelent.
I want to model the construction of a earth dam in 3D. Usually to model the construction, one needs to add layers of elements that are going to load (by self weight) the already existent layers. Does any one has a clue how to do it? I suppose I have to define several submeshes in Salome and then add those submeshes in different calculation phases in Code Aster but…
Thank you for any help or clue.

Regards
J.Marcelino