ADVANCES OF EFFECT OF SOIL CONSOLIDATION ON CONTAMINANT TRANSPORT BEHAVIOR

The mechanisms of contaminant transport in soil include advection, diffusion, dispersion, sorption, biological degradation, chemical reaction and so on. In engineering practice, deformation of consolidation will take place due to self-weight of soils and applied load. On the one hand, consolidation of contaminated soils will lead to advection of the contaminated pore fluid. On the other hand, the void ratio and consolidation coefficient of the soil as well as the hydrodynamic dispersion coefficient of the contaminant will also be changed with the development of deformation, which will comprehensively influence the transport behavior of the contaminants. At first, different types of consolidation-induced contaminant transport models including large strain and small strain consolidation models are summarized. Then, different kinds of test methods and equipment are listed and compared. Finally, related engineering application cases are presented.