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Multifunctional visual research device for bentonite hydraulic power and air pressure splitting features

A bentonite and multifunctional technology, which is applied in the field of multifunctional visual bentonite hydraulic and pneumatic splitting characteristics research device, can solve the problems of difficult splitting, single function, poor scalability, etc., and achieve low price, simple operation and low cost. Effect

Inactive Publication Date: 2017-02-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The test can usually only observe the shape of the sample before and after splitting, and cannot observe the dynamic development process of the splitting of the sample;
[0006] (2) The function is relatively simple and the scalability is poor
Tests are often only available for hydraulic tests on specimens of a specific size;
[0007] (3) Problems such as uneven compression of the sample and difficult judgment of splitting

Method used

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  • Multifunctional visual research device for bentonite hydraulic power and air pressure splitting features
  • Multifunctional visual research device for bentonite hydraulic power and air pressure splitting features
  • Multifunctional visual research device for bentonite hydraulic power and air pressure splitting features

Examples

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Effect test

Embodiment 1

[0035] A multifunctional and visualized high-compacted bentonite hydraulic and air pressure splitting characteristics research device, its structure is as follows figure 1 As shown, it is used to determine the splitting characteristics of round cake-shaped high-compacted bentonite under uniform pressure at the bottom. The device includes a pressurized space, a water injection control component and a data acquisition component connected with the pressurized space. The pressure space includes a transparent top cover, a sleeve 5, and a transparent base sequentially connected from bottom to top, wherein the structures of the transparent top cover and the transparent base are as follows: image 3 with Figure 4 As shown, the transparent top cover includes a plexiglass top cover 3 in the center and a stainless steel top cover 4 fixedly connected to the outside of the plexiglass top cover 3. The center of the plexiglass top cover 3 is provided with an air vent 8, and the stainless s...

Embodiment 2

[0039] Adopt the research device identical with embodiment 1, difference is:

[0040]The water injection needle 15 is installed on the transparent base and communicated with the interface. The bentonite 17 to be tested has a height of 100 mm and a diameter of 50 mm, and the bottom of the bentonite 17 to be tested is artificially drilled to obtain a hole with a diameter of 50 mm and a length of 50 mm. During installation, apply epoxy resin to the side wall of the water injection needle 15 to ensure contact with the bentonite 17 to be tested. After curing for 24 hours, install the instrument and start the water injection splitting test.

Embodiment 3

[0042] Adopt the research device identical with embodiment 2, difference is:

[0043] In this embodiment, a glass block 16 is also filled above the bentonite 17 to be tested.

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Abstract

The invention relates to a multifunctional visual research device for bentonite hydraulic power and air pressure splitting features. The research device comprises a pressurizing space, a data collecting unit and a pressure control unit, wherein the data collecting unit is arranged above the pressurizing space, and the pressure control unit is connected with the pressurizing space. The pressurizing space is defined by a transparent top cover, a sleeve and a transparent base, the transparent top cover and the transparent base are arranged at the two ends of the sleeve in a sleeved mode respectively, the transparent top cover is fixedly connected with the transparent base through a bolt, the data collecting unit is arranged above the transparent top cover, and a connector is arranged on the transparent base and connected with the pressure control unit. Compared with the prior art, the multifunctional visual research device has the advantages of having selectable functions, being high in reliability, visual, low in cost, easy to operate and the like.

Description

technical field [0001] The invention relates to the technical fields of civil engineering and geological engineering, in particular to a multifunctional and visualized research device for hydraulic and air pressure splitting characteristics of bentonite. Background technique [0002] Bentonite is selected as a buffer / backfill material for deep geological disposal of high-level radioactive waste, mainly because of its high expansion self-healing properties, low permeability and strong adsorption in a high-compression state. These characteristics enable high-compacted bentonite to better prevent nuclide migration and realize its function as an engineering barrier. [0003] In actual engineering, the deep geological repository is buried in a stable rock formation 500-1000m deep from the surface. Under such anaerobic conditions, gases are generated in high-compacted bentonite due to groundwater erosion, degradation of organic matter, and radiolysis of water. In the initial sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/06G01N3/02
CPCG01N3/12G01N3/02G01N3/064G01N3/068G01N2203/0012G01N2203/0019G01N2203/0044G01N2203/0048G01N2203/0067G01N2203/0611G01N2203/0647
Inventor 陈永贵张旭东贾灵艳叶为民陈宝
Owner TONGJI UNIV
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