  We present an application of SPH to saturated soilproblems. Herein, the
standard SPH formulation was improved to model saturated soil. It is shown that
the proposed formulation could yield several advantages such as: it takes into
account the pore-water pressure in an accurate manner, it automatically
satisfies the dynamics boundary conditions between submerged soil and water,
and it reduced the computational cost. Discussions on the use of the standard
and the new SPH formulations are also given through some numerical tests.
Furthermore, some techniques to obtained correct SPH solution are also proposed
and discussed. To the end, this paper suggests that the proposed SPH
formulation should be considered as the basic formulation for further
developments of SPH for soil-water couple problems
