Based on the research achievements in the management, this article attempts to classify the risk effects, then get the patterns of the behaviour strategy theoritically.

The connotation of risk efficiency was specified based on two dimensions of risk investment and risk effect.

Design and construction of soft soil deep foundation pit considering time-space effect;

Analysis of deformation laws by using the rule of time-space effect in soft soil excavation;

Finite element analysis of the deformation of deep excavations considering time-space effect in soft soils

The application of the space-time effects in the Deep foundation pit shoring structure;

Analysis of space-time effect for urban shallow tunneling by excavation;

The thesis mainly introduces the design ,parameter ,guarantee measures and technique details of foundation pit excavation according to the "space-time effect" theory, and the technological design that is suitable to be referred and extended .

The Practice of Time and Space Effect in Soft Clay Excavations;

For high in situ stress occurred in Ertan dam area , combined action of initial in situ stress field , time and space effect during excavation and external loads (arch thrust etc.

In this article, the author applys the Time and Space Effect theory, which is established for the soft clay with rheologic characters, through the engineering practices of deep excavations in Shanghai, to research the Tim.