Finite Difference Method Solution on Self-weight Consolidation Equation of Dredged Fill

Considering of self-weight consolidation as the main effect during self-weight deposition and the nonlinear relationship between effective stress, permeability coefficient and solid volume fraction during self-weight consolidation, one dimension self-weight consolidation governing equation of dredged fill was established based on some reasonable assumptions.The new equation was discreted by the Crank-Nicolson difference format and solved by the finite difference numerical solution SFCCP computing program.Numerical simulation of the void ratio for dredged fill was conducted by the SFCCP computing program during self-weight deposition.It shows that the void ratio results based on the new model are close to the results from in-situ tests, that the rationality of the analytical model and correctness of finite difference numerical solution program are validated.The new equation can also provide a favorable prediction on physical mechanical indices for self-weight deposition.