The mechanical property of deep soil and its interaction with underground engineering structures
We are mainly specialized in basic research in theory and application of physical, mechanical basic properties of deep soil medium, interaction characteristics of deep soil and deep underground engineering structures.
Main research contents are listed as follows.
(1) K0 property of deep soil with the depth over 800 m; to get the actual side pressure of deep soil in consolidation state and path conditions and its relationship with mineral composition, buried depth and soil structure, etc.;
(2) Variation of stress state in deep soil (such as principal stress axis deflection, etc.) in different excavation unloading path. Deformation and failure characteristics as well as strength properties. Constitutive relationship considering soil structure effect;
(3) The soil pressure acting on deep soil under different mechanical characteristics of underground structures, and the evolution characteristics of its interaction with the structure; to obtain the external load properties, parameters and influencing factors of underground engineering structures;
(4) The normal and radial interaction rules of deep soil medium with underground engineering structures such as multi-layer composite shaft lining, non-uniform thick frozen wall, etc. under excavation conditions; to obtain the relationship of the parameters such as soil property, depth, structural material characteristics, structural mechanics characteristics, structural geometry characteristics with structural loads and changes.
