Some results of laboratory researches of the vibration effect on the cohesive fine-dispersed geomaterials strength characteristics

Abstract

The effect of strength characteristics, and specifically the cohesion and the angle of internal friction, on the conditions for the displacement and compaction of dispersed materials is described. The employment of the physical modeling method in the researches of these parameters changes under vibration is justified. The laboratory stand, a measuring complex and a technique for experiments performed in two stages are presented. At the first stage, the dispersed material was loaded statically, and the efficiency of moisture and clay content on its strength characteristics was determined. At the second stage, the vibrational acceleration effected, additional to the static one, on the change in the effective cohesion and the effective angle of internal friction of dispersed materials of various compositions and moisture was considered. Recommendations on using of the vibration impact on fine-dispersed materials regimes, directed at the efficiency increase and reducing the energy intensity of the forced processes of their movement and compaction, have been established.