The experiential coefficient for settlement calculation is obtained by back analysis on the measured settlement results of about sixties buildings in Beijing.

During sedimentation tests of putting positive macromolecular polymers into high sediment concentrated suspension of the Yellow River,it approaches the variation rules of morphologic parameters of high suspension flocculation in different flocculation stages with the help of electron microscope observation,image analysis techniques and characteristic parameter of fractal dimension.

The suspending stability of dispersive system was investigated through sedimentation experiment.

The free settling experiments for high-concentration material slurry of cement-full tailing backfill at a different ratio and different concentration are conducted and the effects of the related factors on settling property of the slurry are analyzed.

By comparing the methods of settling experiment and fluidization experiment, it can be considered that the method of fluidization experiment by sampling in cone-shaped tube is a better one at present.

Semi-analytical element method of settlement computation for composite foundation;

The basic theory and the settlement computation method of the dynamic drainage consolidation are presented in this paper.

Therefore, the existing theories of settlement computation are limited.