Introduction

This example simulates a one-dimensional consolidation test using SIGMA/W and SEEP/W. The SIGMA/W formulation is verified by comparison to SEEP/W, because SEEP/W solves the rigorous groundwater flow equation, which includes changes in storage due to soil and water compressibility and flow due to gradients in pore-water pressure, water density, and gravitational flow. The Terzaghi 1D equation is not used for this comparison because the analytical solution excludes gravitational flow and water compressibility.