Based on modal perturbation method, a new approach is developed for solving the random seismic response of horizontal layered soil.

Analytical solution of contaminant diffusion through multi-layered soils;

One dimensional consolidation analysis of layered soils with impeded boundaries;

Field experimental study of infiltration capacity of layer soil;

Calculative method of mechanical admittance curve and its preliminary application for multi-defective piles in layered soil;

Infiltration mechanism of layered soil and its simulation model;

A solution to the torsional response of a multi defective pile in layered soil is presented,when subjected to an impact torque at pile top.

In this paper, based on the method of elastical foundation reaction, the analyses of the non-lined interaction of laterally loaded piles with non-unitary stiffness and multilayed soils with reaction coefficient varying along the depth were made using step′s loading method.

Maximum height of upward capillary water movement in layered soil;

Reviews on transport of water and salt in layered soil;

To fully explore the reason of finger flow and its change law,taking three kinds of soil,which is wildly distributed in northwest of China,as experiment material,the finger flow experiment of layered soil and homogeneous soil under the condition of sufficient water supply indoor is conducted in this paper.