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A model test device for pipeline safety in landslide areas based on gravity-loaded materials

A model test, gravity loading technology, applied in the field of geotechnical engineering, can solve the problems of bending fracture, pipeline deformation, understanding of the influence law of unlaid pipeline, etc., to achieve the effect of simple structure and convenient operation

Active Publication Date: 2022-07-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Description
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  • Application Information

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Problems solved by technology

The pipeline laid at the bottom of the slope may be deformed or even bent and broken due to the sliding of the sliding body, causing serious consequences
[0003] At this stage, separate studies on pipelines and landslide disasters are relatively comprehensive, and there are few studies on the combination of the two. It is impossible to deeply understand the influence of landslides on pipeline laying under different slope angles, different slope heights, or rainfall.

Method used

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  • A model test device for pipeline safety in landslide areas based on gravity-loaded materials
  • A model test device for pipeline safety in landslide areas based on gravity-loaded materials
  • A model test device for pipeline safety in landslide areas based on gravity-loaded materials

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preparation example Construction

[0036] The preparation system of the device can simulate the influence of the slope height when a landslide occurs by changing the number of splicable side panels 8; by changing the strip control panels 10 cut into different inclination angles to simulate the influence of the landslide inclination angle when a landslide occurs; Precipitation sprinkler 6 precipitation to simulate the impact of rainfall on landslides.

[0037] In order to realize the self-sliding of the landslide body, the device uses the principle of simulating the gravitational field with the external force field. According to the similarity between the magnetic field and the gravitational field, the soil is mixed with iron powder material and is subjected to the electromagnetic force of the electromagnet base plate 7 of the device to simulate ( 1+n)g gravity field, to achieve the purpose of loading or overloading the experimental sample, and realize the sliding of the landslide body.

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Abstract

The invention relates to the field of geotechnical engineering, in particular to a model test device for the safety of pipelines in landslide areas based on gravity-loaded materials. It includes a preparation system and a loading system. The preparation system is used to hold and prepare the samples of the whole test and output electromagnetic force to similar materials through the electromagnetic application device, which equivalently increases the gravity of the test and realizes the sliding of the landslide body. The loading system The samples of similar materials in the preparation system are uniformly loaded by hydraulic jacks to simulate in-situ stress loading.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a model test device for the safety of pipelines in landslide areas based on gravity-loaded materials. Background technique [0002] Landslide refers to the overall sliding caused by shearing along a certain weak surface (or weak zone) inside the slope under certain natural and geological conditions, the part of the rock and soil mass that constitutes the slope, under the action of gravity. destroy. The occurrence of landslides is usually sudden, frequent and destructive, and it is a large-scale natural disaster recognized by the world. The pipelines laid at the bottom of the slope may be deformed or even bent and fractured by the sliding body, resulting in serious consequences. [0003] At present, the separate researches on pipelines and landslide disasters are relatively comprehensive, and the combination of the two is seldom studied, and it is impossible to deeply und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24G01M5/00
CPCG01N33/24G01M5/0058
Inventor 杨文东王学鹏王英男吕显先
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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