Determination of hydraulic parameters of non-linear consolidation clay layers by type curve method

The consolidation of clay layers is great significance for groundwater environmental protection, storage utilization, and land subsidence. In this study, the governing equation excess pore water pressure during non-linear process under load conditions obtained based on one-dimensional theory. Analytical solutions are then derived with single or double drainage caused by dissipation pressure. With these analytical solutions, dynamics deformation layer analyzed. Correspondingly, a type curve method proposed to calculate hydraulic parameters through laboratory experiments, which verifies reliability solutions. study results show that predicted theory smaller than linear increases increase in thickness layer, compressive index, overburden load, while it decreases initial void ratio effective stress. stable time, at completed, compression index ratio, stress, conductivity. It does not vary Conclusively, prediction more accurate applicable further pressures.