Preparation method of sample for trapped-air fluidization experiment of high-speed and long-range landslide

Abstract

The invention discloses a preparation method of a sample for a trapped-air fluidization experiment of a high-speed and long-range landslide. The preparation method can be used for providing important physical and mechanical parameters for the further research of dynamic characteristics of the high-speed and long-range landslide. The preparation method comprises the following steps of carrying out laboratory experiment analysis on physical and mechanical properties and gradation distribution conditions of constituting particles of a prototype landslide accumulation body, and selecting similar materials for an experiment model; determining the total thickness of a pre-configuration experiment model, and converting the thickness of each sub-layer in the experiment model according to the thicknesses of the sub-layers in the prototype landslide accumulation body; then calculating the particle content and particle quality of each sub-layer within different particle size ranges in the experiment model, and finally preparing each layer of the experiment model. According to the preparation method, the overall accumulation properties of the high-speed and long-range landslide are appropriately simulated, the important physical and mechanical parameters are provided for the further research of the dynamic characteristics of the high-speed and long-range landslide, and the preparation method is suitable for popularization and application in research fields of dynamic mechanisms of the high-speed and long-range landslide.

Description

technical field [0001] The invention relates to the field of high-speed long-distance landslide dynamic mechanism research, in particular to a method for preparing samples for high-speed long-distance landslide air-entrained fluidization tests. Background technique [0002] In the dynamics research of high-speed and long-distance landslides, scholars at home and abroad have carried out a large number of experimental studies and achieved fruitful research results. However, in the previous research results, the selection of similar materials for the test is often based on Based on the physical and mechanical properties of the particles in the landslide accumulation, similar materials were selected for the test, in order to maximize the simulation of the real physical and mechanical properties of the landslide accumulation debris. Although this method realizes the simulation of the physical and mechanical properties of debris accumulated in high-speed and long-distance landslid...

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Problems solved by technology

Although this method realizes the simulation of the physical and mechanical properties of debris accumulated in high-speed and long-distance landslides, this method only considers the physical and mechanical properties of debris accumulated in high-speed and long-distance landslides, ignoring the extreme range of particle size distribution in the accumulation of high-speed and long-distance landslides. This characteristic is wide, and its particle size is distributed from silt-sized particles to tens of centimeters, or even several meters long. When the high-speed remote landslide air-entrained fluidization test samples prepared by some preparation methods are used for related tests, the experimental results obtained cannot provide important physical and mechanical parameters for further research on the dynamic characteristics of high-speed long-distance landslides.

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