SEEPAGE FAILURE ANALYSIS WITH EVOLUTION OF AIR BUBBLES BY SPH

摘要

Seepage failure causes important geotechnical problems such as damage of dyke under flood, lateral flow of ground due to liquefaction. Moreover, generation of gas and blow-out of air bubbles have been seen before seepage failure occurred in many cases. The sources of air bubbles could be thought to be air phase entrapped by seepage front and oversaturated air in pore water. The generation and the development of air bubble,therefore, play a very important role on seepage failure in nature. In this paper, we focused the evolution effect of air bubbles in pore water on seepage failure. We performed model test, and developed a new numerical simulation method accounting for flowage deformation and solid-water-air bubbles interactions by Smoothed Particle Hydrodynamics.And simulation results were verified by comparison with model test results.