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Multi-connection experiment system and experiment method thereof

An experimental system and experimental technology are applied in the direction of material inspection, suspension and porous material analysis, and the use of stable tension/pressure to test the strength of materials. progress and other issues, to achieve the effect of speeding up the progress of experimental research, shortening the experimental research cycle, and simplifying the composition mode

Inactive Publication Date: 2019-04-16
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the extremely low permeability of deep rocks, using conventional experimental methods to test permeability will lead to a long and time-consuming experimental measurement process; researching the rheological properties of rocks is a time-consuming task; In addition, the heterogeneity inside the rock makes the results of core experiments more discrete, and the experimental results of one core are not enough to represent the mechanical behavior of the entire batch of samples, often requiring repeated work to obtain effective data points, " Water Conservancy and Hydropower Engineering Rock Test Regulations (SL264-2001) and "Engineering Rock Mass Test Method Standard (GB / T 50266-2013)" all require that the number of samples in each group should not be less than 3-5
Traditional experimental equipment and experimental methods can only take one sample for each experiment. In order to obtain effective experimental data, it often takes several months to obtain the same type of experiment, and some creep experiments even take several years to obtain comparative results. Good research results, which to a certain extent limit the progress of related research in my country

Method used

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  • Multi-connection experiment system and experiment method thereof
  • Multi-connection experiment system and experiment method thereof

Examples

Experimental program
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Embodiment 1

[0034] The experimental system described in this embodiment is composed of 3 test units, and each experimental structure includes a rectangular portal frame 1, a triaxial chamber 2, an axial pressure chamber 4, an upper pressing rod 3, an axial loading member 16-1, and a balance platform 6. Support column 5 constitutes;

[0035] The support column is fixed on the bottom of the rectangular frame, and the balance platform is fixed and supported horizontally by the support column. The triaxial chamber and the axial pressure chamber are cylindrical components with one end closed, and are respectively fixed on the upper and lower surfaces of the balance platform and the balance state. Enclosing a closed space, the end edges of the triaxial chamber and the axial pressure chamber in contact with the balance platform are provided with flanges for setting bolt holes so that they can be fixed together with the balance platform with bolts. The balance table is a cylindrical member with a...

Embodiment 2

[0039] Example 2: Triaxial elongation experiment

[0040] 1. Lift the triaxial chamber 2 to the top of the portal frame 1, install the prepared cylindrical rock sample 8 on the axial loading member 16-1 (place the upper and lower indenters at the upper and lower ends of the rock sample), and use The fluorochlororubber membrane wraps the rock sample 8, the axial loading member 16-1 and the upper pressing rod 3 at the same time, and the upper and lower ends of the fluorochlororubber membrane are clamped with a retractable hoop to prevent the infiltration of confining pressure oil;

[0041] 2. Lower the triaxial chamber 2 to the balance table 6, lock the anchor screw 9-1 of the triaxial chamber, and open the confining pressure cut-off valves 15-1, 15-2, 15-3 (here, if only one test is carried out in a batch) In this way, you only need to open any one of the confining pressure cut-off valves), and use the confining pressure pipeline 11 to fill the triaxial chamber with confining p...

Embodiment 3

[0044] Embodiment 3: Rock seepage creep experiment

[0045] 1. Lift the triaxial chamber 2 to the top of the portal frame 1, install the prepared cylindrical rock sample 8 on the sample lower indenter 7-1 and the sample upper indenter 7-2, and place them On the axial loading member 16-1, the rock sample 8, the sample lower indenter 7-1 and the sample upper indenter 7-2 are simultaneously wrapped with a fluorochlororubber film, and the fluorochlorohydrin is tightened with a stretchable hoop. The upper and lower ends of the rubber membrane prevent the infiltration of confining pressure oil;

[0046] 2. Lower the triaxial chamber 2 to the balance table 6, lock the anchor screw 9-1 of the triaxial chamber, open the confining pressure stop valves 15-1, 15-2, 15-3, and use the confining pressure pipeline 11 to flow into the triaxial chamber. full of confining oil;

[0047] 3. Use the axial pressure pump and the confining pressure pump to apply axial pressure σ to the sample respec...

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Abstract

The invention aims to provide a multi-connection experiment system. A plurality of experimental units share a set of confining pressure loading pipeline and a penetration upstream pipeline, a sample is subjected to confining pressure in the experiment process, and the osmotic pressure is provided by a same confining pressure source and a permeation source; an axial pressure system of each experiment unit is independently connected with an axial pressure loading pump; and the permeation downstream is independently connected to an atmospheric pressure or a downstream permeation storage tank. A rock mechanical comprehensive experiment system with not less than two samples can be simultaneously carried out, and as expansibility, the system can be simply changed into the experimental system which only carries out single sample test according to the requirements of researchers.

Description

technical field [0001] The invention belongs to the field of rock mechanics performance testing, in particular to an experimental system and an experimental method for a long-term experiment of simultaneously measuring the creep, seepage and coupling of multiple rock cores. Background technique [0002] Permeability is an important characterization parameter to describe the flow ability of fluid in porous media materials such as rocks; the rheological properties of rocks describe the deformation properties of rocks under external force; permeability and rheological properties are important in energy extraction and storage, waste disposal , water conservancy engineering, environmental engineering and many other fields have a wide range of applications. [0003] In recent years, with the development of the economy, the exploitation of unconventional oil and gas resources, CO 2 Engineering activities such as geological storage and salt rock energy storage are becoming more fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N15/08G01N33/24
CPCG01N3/12G01N15/0826G01N33/24G01N2203/0019
Inventor 赵鹏何柏谢凌志张瑶任利
Owner SICHUAN UNIV
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