The Motion and Deposit Characteristics of Dry Granular Flow Based on Experimental Study

The topic of dry granular flow in the field of geological hazards has attracted considerable attention from the scientific community. Nevertheless, the motion and deposit characteristics of dry granular flow have not been well elucidated. In this study, an experimental model of dry granular flow was developed to investigate the influence of factors on the motion and deposit characteristics. Additionally, the shape of deposit continuum was emphatically discussed. The results demonstrate that: (1) the fine-particle group exhibits favorable continuity and integrity throughout the sliding process, while conversely, the coarse-particle group displays a higher degree of dispersion during the same process. (2) The dimensions of the resulting deposit, including its length, width, and thickness, are noticeably impacted by factors such as particle gradation, mass of the dry granular flow, length of the landslide, and slope angle. (3) Furthermore, an approximation of the leading-edge portion of the deposit continuum reveals a quadratic function image. The research findings indicate that an increase in slope angle leads to a reduction in the opening of the edge shape exhibited by the deposit continuum.