True triaxial test device for combustible ice sediments

A test device and true triaxial technology, applied in the field of rock and soil mechanics, can solve the problems that cannot meet the requirements of true triaxial test, and achieve the effect of avoiding mutual interference

Active Publication Date: 2018-12-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] (3) The true triaxial test of combustible ice deposits requires independent loading of the cuboid sample from the three principal stress directions. However, the existing conventional triaxial test devices for combustible ice deposits can only apply lateral confining pressure, which cannot satisfy the true three-dimensional test. Shaft test requirements

Method used

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  • True triaxial test device for combustible ice sediments
  • True triaxial test device for combustible ice sediments
  • True triaxial test device for combustible ice sediments

Examples

Experimental program
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Embodiment 1

[0056] Such as Figure 1 to Figure 10 As shown, a true triaxial test device for combustible ice deposits, including:

[0057] The air-water supply-recovery component 1 forms an air source circulation channel and a water source circulation channel with the sample 0 in the true triaxial loading component 2;

[0058] True triaxial loading component 2, which provides pressure loading on the sample 0 in the directions of up and down, left and right, and front and rear axes;

[0059] The temperature control device 3 provides temperature control to the temperature chamber 22 in the true triaxial loading assembly 2;

[0060] The pressure control device 4 controls the pressure loading in the directions of the up and down, left and right, and front and rear axes in the true triaxial loading assembly 2;

[0061] Information processing systems for data collection and control;

[0062] Wherein, the true triaxial loading assembly includes a true triaxial loading device 20, a force frame ...

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Abstract

The invention belongs to the technical field of rock and soil mechanics, and relates to a true triaxial test device for combustible ice sediments. According to the true triaxial test device, the formation process of the combustible ice sediments in a deep sea reservoir stratum can be simulated in a laboratory, a true triaxial compression test is carried out on the combustible ice sediments, and therefore a technical guarantee and support are provided for accurately predicting the strength characteristics of the reservoir stratum and researching the constitutive relation of the reservoir stratum; and in the true triaxial compression test, main stress in three directions can be applied independently, the real stress characteristics of the combustible ice sediments in a bottom layer can be better reflected, but the boundary loading condition problem can be easily caused in the loading process, composite loading plates of rigid plates and deformation plates are adopted in the front-and-back pressurization direction, so that the pressure can be uniformly loaded on a sample through the composite loading plates in the front-back pressurization process, and therefore the problems that mutual interference of loading plates in three-directional loading is caused in the loading process, and loading is not uniform due to the fact that the sample is deformed in the loading expansion processcan be solved.

Description

technical field [0001] The invention belongs to the technical field of rock and soil mechanics, and relates to a true triaxial test device, in particular to a true triaxial test device for combustible ice deposits. Background technique [0002] The true triaxial test can simulate the mechanical properties of combustible ice deposits in the actual rock and soil environment, and it can better reflect the constitutive relationship of combustible ice deposits than conventional triaxial tests. At present, there is no mature and accurate test device and method for simulating the formation of combustible ice deposits under natural conditions, sample preparation and true triaxial strength testing. The main reasons are: [0003] (1) The conventional triaxial compression instrument is easy to operate and is a commonly used experimental equipment for the study of conventional soil mechanical properties. However, combustible ice deposits can only exist stably under low temperature and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/02G01N29/00G01N1/28G01F22/00
CPCG01F22/00G01N1/28G01N3/02G01N3/12G01N29/00G01N2203/0003G01N2203/0019G01N2203/0048G01N2203/0256G01N2203/0676
Inventor 周博王宏乾薛世峰林英松黄名召
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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