However,researches on the rheological property under unloading stress path are seldom taken into account.

Comparison between the results obtained from the improved model and tests shows that the proposed rheological model can describe the overall rheological deformation law of rock with time under unloading stress path.

Based on analyzing the existing literature about the research on coupling of the seepage and unloading stress of the fractured rock and by means of collection, analysis of data in field and simulation test in laboratory, a coupling model of seepage and unloading stress is set up, which is verified and tested by the field data and simulation test.

Numerical simulation of stress path tests on sand;

Tangent elastic modulus of Duncan-Chang model for different stress paths;

Discussions on yield criterions and stress paths of soils in tests and numerical analyses;

Test and modulus formula for lateral unloading and loading stress paths during excavation in foundation pit;

Research on relation between soil pressure and displacement by tests of stress paths;

And also unique effective stress path is demonstrated to be true of equations of pore pressure under various total stress paths.

On stress route of loosening soft soil and its strength influence;

The development of inducing stress aeolotropism in clay which was not only decided by the maximum stress force, but also lied on the stress route of reaching the maximum stress point of clay.

Started from stress route,it analyzes the principles of vacuum rainfall reinforced road bank thick soft base.