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Undisturbed permeability and strength detection test apparatus used for biological consolidation of soil

A technology of strength detection and test equipment, which is applied in the direction of measurement equipment, permeability/surface area analysis, and the use of stable shear force to test the strength of materials, etc. It can solve the problems of affecting the experimental effect and accuracy, uneven heat distribution, soil disturbance and other problems, to achieve the effect of accelerating microbial reproduction, low cost, and achieving consolidation speed

Inactive Publication Date: 2017-01-04
NANJING HYDRAULIC RES INST
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Problems solved by technology

At present, this test method has obvious disadvantages: temperature control usually uses experimental room or regional heating, which is costly and uneven heat distribution; using a ring knife to take consolidated soil samples will cause disturbance to the soil, seriously affecting the experimental results and accuracy

Method used

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  • Undisturbed permeability and strength detection test apparatus used for biological consolidation of soil
  • Undisturbed permeability and strength detection test apparatus used for biological consolidation of soil

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0025] 1. Press figure 2 Installed 1 (sliced ​​stainless steel bucket);

[0026] 2. Put the soil sample or sand sample to be solidified into 1 (sliced ​​stainless steel bucket);

[0027] 3. Press figure 1 Install the test device;

[0028] 4. Adjust 10 (temperature-adjustable electric hot water tank) to the target temperature, turn on 9 (heating peristaltic pump), and wait until the reading of 7 (thermometer) reaches the target temperature;

[0029] 5. Inject the cor...

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Abstract

The invention discloses a permeability and strength detection test apparatus used for rapid biological consolidation of soil. The apparatus can realize biological consolidation temperature-controllable real-time monitoring of the permeability coefficient change of a sample and realize the preparation of an undisturbed consolidated soil strength detection sample.

Description

[0001] Technical field: [0002] The invention relates to a soil bio-consolidation non-disturbance permeability and strength detection test device, which belongs to the field of soil strength test equipment in a soil mechanics laboratory and the field of seepage hydraulic test equipment. [0003] Background technique: [0004] The use of microorganisms to consolidate soil is a new type of reinforcement technology that has just emerged. The main principle of this technology is that by injecting appropriate amount of nutrients and minerals into the underground soil, some bacteria can use the hydrolysis ability of urea to generate carbonate ions, and combine with calcium ions to form mineral deposits. It will gradually solidify and block the pores between the soil particles, so as to achieve the purpose of increasing the strength of the soil. At present, in soil bioconsolidation experiments, the volume of the test device is relatively large, and bioconsolidation has high temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N3/24
Inventor 谈叶飞谢兴华
Owner NANJING HYDRAULIC RES INST
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