Exploitation of practical use of unsaturated soil mechanics

Until now the research activities in the field of unsaturated soils have been still in the academic stage.The key point of troubles is the measurement of suction.Three possible ways to use degree of saturation,reduced suction or generalized suction instead of matrix suction were proposed.In addition,a simplified consolidation theory of unsaturated soils about pore air pressure was advanced.The influence of cracks in clay surface on the stabilization and deformation of slope was discussed.