According to the stratigraphic characteristic of flood plain of Hunhe River, a new technique with vertical set geomembrane to waterproof and cement-soil thin wall to cutoff was successfully used in foundation of dike project.

Application of cement-earth thin wall blocking seepage technique on the Hanshan reservoir for strengthening and eliminating dangers;

According to characteristic geological condition of Yangtze River Floodplain,composite retaining systems of soil nailing wall and cement-soil wall are used with the consideration of the experience,a simplified model for calculating is proposed along with calculation method and key construction of such composite retaining.

In soft soil area cement-soil wall has been used on deep foundation pit bracing,which not only has the advantage of good whole rigidity and less water leakage into the pit,but also saves time,is good for environment protection,and costs less money.

Calculation of the horizontal displacement of the cement-soil retaining wall in foundation pit supporting projects;

The application of stability analysis based on finite element stress method for the slope stability problem of cement-soil retaining wall is discussed in this paper.

Based on the deformation mechanism of cement-soil retaining wall the effect of top beam of the wall is studied.

Application of cement-soil retaining walls with irregular section in deep excavations;

It mainly expounded the safety and reasonability and economy of earth nailed wall and cement soil retaining wall.