Experimental Investigation on the Segregation of Landslide Dam Materials

Abstract:

Large landslides usually dam lakes that may easily fail and then result in catastrophic flood threatening the population downstream. The grain size composition within landslide dams is considered as a vital factor that impacts the timing of failure and the resulting magnitude of flood. Therefore, experiments were conducted to investigate the features of size distribution in accumulation bodies. The results indicate that the grain size distribution varies in different parts of the deposits. The inverse grading phenomenon can be observed. Grains in the front of the deposit are coarser, while grains in the rear are finer. For the front of the deposit, the grains in the middle are finer than the other two sides. The grain size segregation is believed to be the governing mechanism that contributes to this special distribution. The speculations of the grain size distribution inside the landslide dam are presented.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2103-2107
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2103
• Online since: July 2014
• Authors: Ming Zhang*, Fei Wang, Gu Jie Mouse, Wei Tao Luo, Hong Wu Zhang, Yao Ru Liu
• Keywords: Experimental Investigation, Grain Size Distribution, Landslide Dam, Particle Segregation

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