Some problems of vibro casing cast-in-place pile in silty sand foundation;

Application of diaphragm walls in silt and sand ground;

Taking the tunnel project of Jingshi Superhighway in south-to-north water diversion project as the example, this paper expounds the excavation method, quality control measures and construction points of tunnel project passing through the silt stratum.

The application of SMW process pile in fine sand layer;