By applying finite element method, analysis of main influenced factors to surface discontinuous deformation on condition of interlayer weak planes are made.

Summary of shallow-buried tunneling construction in soft ground;

On the pile body quality control of CFG pile in soft ground;

The construction of prestressed anchoring cable in soft ground;

Beginning with the normal & reversed construction method of the deep foundation,integrating some project model,author of the paper interpreted the technology and difficulties of reversed construction method in weak strata,moreover offered the measure of safety & quality.

Based on the measuring data,the construction stability of the large-section subsea tunnel in weak strata is analyzed,including the characters of surrounding rock,the distance betwee.

Screwed pill′s advantages,such as high single pile bearing capacity,saving materials,making full use of the soil characteristics,and so on,are pointed out,and the screw pile in weak strata has obvious advantages of perspective,these are proved through applying screw pile into an actual engineering example.

Through the construction of underground cross in the city of Wuhan,it introduces the water contain soft stratum,polluted water contain,near to artificial lake large span structure shallow burying & under excavation construction technique,and this supplies reference to similar projects.

5 ChongDong tunnel in Beijing subway in soft stratum,it introduces the skill measures from aided constructing skill,tunnel digging ways,supporting forms and informationalized constructing management,ensures the safe,high-quality and effective construction,and offers reference for familiar stratum construction.