Testing device for monitoring submarine landslide mass transportation process, and test method

Abstract

The invention discloses a testing device for monitoring submarine landslide mass transportation process, and a test method, and belongs to the technical field of the ocean engineering. Based on a critical shear stress starting condition, an equivalent simulation method is adopted, a testing device for monitoring the transportation of the submarine landslide body to the water environment is provided, and a test method for effectively testing and analyzing the characteristic parameters of the submarine landslide mass transportation process is provided according to the establishment and parameterconversion of an equivalent simulation relation and a test calibration relation. The testing device provided by the invention can monitor a change condition of the submarine landslide mass transportation process in real time, the parameters are convenient to obtain, and the data volume is rich; the test method is full in theory, convenient to popularize and beneficial to landslide hazard evaluation and engineering facility design work in ocean engineering; in addition, the method can be applied to the research of the mass transportation characteristics in the submarine landslide motion process and the research of the marine geological problems such as submarine sand waves, submarine sediment resuspension and the like.

Description

technical field [0001] The invention belongs to the technical field of marine engineering, and relates to a device and method for monitoring and analyzing characteristics of submarine landslides in a laboratory, in particular to a testing device and a test method for monitoring the mass transport process of submarine landslides. Background technique [0002] Submarine landslide is a marine soil disaster that occurs frequently, affects a wide area, and is difficult to predict. It is characterized by local or large-scale sliding of seabed soil and is also one of the important geological processes for seabed sediment migration. After the submarine landslide is triggered by earthquakes, hydrate decomposition, waves and other factors, under the complex action of the water environment, it often shows staged evolution characteristics, including: slope instability, block slip, mud flow slip, Turbidity current flow, etc., the landslides formed usually have the characteristics of larg...

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Problems solved by technology

However, how to quantify and analyze the mass transport process during submarine landslide movement, and give the key characteristic parameters in the process (ie, mass transport flux, which represents the mass transport amount per unit area per unit time, kg / m 2 s), there is no reliable test device and test method, which is not conducive to the evaluation of submarine landslide hazards in marine engineering and the development of engineering facility design in submarine landslide-prone areas

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