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Debris flow simulation test device and debris flow model test system

A simulation test and model test technology, applied in the field of civil engineering geotechnical, can solve the problems of inconvenient operation and low efficiency, and achieve the effect of convenient operation, reduced test cost and simple structure

Active Publication Date: 2019-01-11
CHENGDU UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many researchers study the movement characteristics of debris flow under different conditions in the natural state. However, the existing test device is designed for a specific situation, and the debris flow material must be released manually, which is extremely inconvenient and inefficient.

Method used

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  • Debris flow simulation test device and debris flow model test system
  • Debris flow simulation test device and debris flow model test system
  • Debris flow simulation test device and debris flow model test system

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the debris flow simulation test device 100 provided in Embodiment 1 of the present invention is used for a debris flow model test, and the debris flow simulation test device 100 includes a chute mechanism 10 and a flap control mechanism 20 .

[0041] The specific structure of each component of the debris flow simulation test device 100 and the corresponding relationship among them will be described in detail below.

[0042] First, the specific structure of the chute mechanism 10 will be introduced in detail. Please refer to figure 2 As shown, the chute mechanism 10 comprises a debris particle chute 13 and an accumulation track test groove 16, and the number of the debris particle chute 13 and the accumulation track test groove 16 is the same and is at least one, and the debris particle chute 13 is connected to the accumulation track test groove 16. The track test tanks 16 are fixedly connected in one-to-one correspondence. The bottom of the...

Embodiment 2

[0059] After research, the researchers found that the debris flow simulation test device 100 provided by the present invention, on the basis of the above-mentioned embodiment 1, can also make the following optional other structural schemes, which are specifically described as follows:

[0060] Please refer to Image 6 As shown, when the number of debris particle chute 13 and coordinated motion assembly 25 is at least two, after different rotating shafts 26 are sheathed in sequence, when they rotate independently under the action of control plate 29 and turnover plate 28, the relative The frictional force between two adjacent rotating shafts 26 is relatively large, so the coordinated motion assembly 25 in the debris flow simulation test device 100 provided by Embodiment 2 of the present invention also includes a ball set 30, and the ball set 30 includes 26 rings a plurality of balls, and between two adjacent rotating shafts 26 is a ball layer, and each ball layer is provided wi...

Embodiment 3

[0072] Embodiment 3 of the present invention provides a debris flow model test system 40. The debris flow model test system 40 includes a geotechnical centrifuge and the debris flow simulation test device 100 provided in the above-mentioned embodiment 1 and embodiment 2. The debris flow simulation test device 100 is fixedly installed in the hanging basket 50 of the geotechnical centrifuge, and is used for testing the debris flow model after the debris flow prototype is reduced by 1 / n times.

[0073] Due to the high-speed remote landslide-debris flow has an obvious "scale size effect", that is, only when the landslide volume is greater than 10 6 m 3 When , the movement of the debris flow has obvious fluidization characteristics. When the slip mass is smaller than this threshold, the clastic material has no obvious fluidization characteristics. This is because the larger the volume of the landslide, the more frequently the front particles are collided with the rear particles, ...

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Abstract

The invention relates to the civil engineering geotechnical field and discloses a debris flow simulation test device and a debris flow model test system. The debris flow simulation test device is applied to a debris flow model test and comprises a slide chute mechanism and a turning plate control mechanism. A control component is used for controlling a control board, a turning plate and a rotating shaft to axially and synchronously rotate around the rotating shaft to enable the turning plate to have a first state and a second state, wherein when the turning plate is in the first state, a debris particle slide chute is partitioned into an accumulation area and a sliding area, and when the turning plate is in the second state, the accumulation area and the sliding area are communicated. The debris flow model test system is used for testing a debris flow scale model and comprises a geotechnical centrifuge and the debris flow simulation test device. The geotechnical centrifuge enables the debris flow scale model to acquire gravity stress uniform with that of a debris flow prototype, debris flow kinetic characteristics and laws under different gravity environments can be well disclosed through release, movement and accumulation of the debris flow simulation test device under centrifugal acceleration field conditions, and a new test idea is provided.

Description

technical field [0001] The invention relates to the field of civil engineering geotechnical technology, in particular to a debris flow simulation test device and a debris flow model test system. Background technique [0002] my country is a country where geological disasters occur very frequently and disaster losses are extremely serious, especially in the western mountainous areas. Due to the disorder of the weather system and local heavy rainfall caused by global climate change, as well as the increasingly intense human engineering activities, my country's geological Disasters occur frequently. The debris flow formed by the high-speed remote landslide not only has a wide range of influence after its own instability, but also forms a remote "collapse→slide→flow" compound disaster geological body after breaking away from the parent rock, which can move an abnormally long distance and cause devastating damage and heavy casualties. [0003] Many researchers study the movement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 郑光许强罗昭宇刘国友赵玉虎
Owner CHENGDU UNIVERSITY OF TECHNOLOGY