Analysis of the Motion and Dynamic Characteristics of Subaqueous Debris Flows

Yuelou Cai, Lei Nie, Min Zhang, Shiwei Shen, Yan Xu

Ekoloji, 2018, Issue 103, Pages: 1-7, Article No: e103001

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Abstract

Subaqueous debris flow is one of the most important marine geological disasters. Understanding the subaqueous debris flow is related to the safety of marine engineering and the development of the national economy. In this paper, the subaqueous debris flow is taken as the research object. Through a comparative study of terrestrial debris flow, combined with existing research results, the characteristics, motion characteristics and motion dynamics of subaqueous debris flow are studied, and the future research direction of subaqueous debris flow is discussed. The study shows that the water pressure during the motion process of subaqueous debris flow can not be ignored. Physical model test and numerical simulation are the most important research methods at present. How to accurately measure the parameters of the motion process in the physical model test is a difficult problem. In the numerical simulation, the constitutive model and the coupling of multiphase medium need to be further studied. A large number of measured data, physical experiments and numerical simulation data remain to be accumulated. It is a direction to study the kinetic theory of subaqueous debris flow from the point of view of plastic fluid mechanics and energy conversion.

Keywords

subaqueous debris flow, flow characteristics, motion process, velocity, impact force

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