Study on Sodium Modification of Bentonite in Baitupo, Linli County, Hunan Province;

Baitupo calcbentonite ore is mined easily owing to the stable, shallow buried ore bed with large thickness.

In this thesis, the mineralogical characters of bentonite in Baitupo, Linli county of Hunan Province is studied systemically and roundly by using modern material testing and analyzi.

Study on the Crack Mechanism and Back Analysis of Mechanics Parameters of the Soil Slope in the New Area of MaGang;

Discussion on location of slip surface and spatial distribution of its safety factor in stability analysis of soil slope;

Stability analysis of soil slope under rainfall seepage influence;

Displacement measurement using image analysis in centrifuge modeling of slopes;

Centrifuge modeling of failures of cohesive soil slopes;

Analytical model for the progressive deformation of natural fissured slopes;

On the analytical method of earth slope stable reliability under non-stationary seepage;

When the geometric characteristics and the physical property index of the earth slope are given.

The circle sliced method of analysis of earth slope stability analysis under gravity erosion is widely employed in engineering practice.

Soil erosion happened mainly on slope dry farmland where slope dry farmland(6°~25°) is the main body of it.