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Soil gas-liquid permeation test system for isotropic dry-wet chemical circulation

A test system, gas-liquid technology, applied in the direction of permeability/surface area analysis, scientific instruments, suspension and porous material analysis, etc., can solve the problems that cannot reveal the evolution mechanism of soil penetration, mechanics and deformation, and achieve the goal of helping development Effect

Inactive Publication Date: 2019-12-03
CENT SOUTH UNIV
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Problems solved by technology

[0004] The present invention provides a soil gas-liquid penetration test system with isotropic isotropic dry-wet chemical cycle. Penetration, mechanics and deformation evolution mechanism of

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  • Soil gas-liquid permeation test system for isotropic dry-wet chemical circulation
  • Soil gas-liquid permeation test system for isotropic dry-wet chemical circulation
  • Soil gas-liquid permeation test system for isotropic dry-wet chemical circulation

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0026] The present invention provides an isotropic isobaric dry-wet chemistry for the existing difficulties in understanding and evaluating the performance and life of clay engineering barriers, and traditional research methods cannot reveal the evolution mechanism of soil penetration, mechanics and deformation in complex site environments. Circulating soil gas-liquid penetration test system.

[0027] like Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a soil gas-liquid penetration test system of isotropic isotropic dry-wet chemical cycle, including: organic glass cover 1, the top of the organic glass cover 1 is pierced with a vertical loading rod 2. A piston 3 is fixedly connected to the bottom of the vertical loading ...

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Abstract

The invention provides a soil gas-liquid permeation test system for isotropic dry-wet chemical circulation. The system comprises an organic glass cover which covers a stainless steel base, a verticalloading rod passes through a top of the organic glass cover, and a piston is fixedly connected under the vertical loading rod. A reaction chamber exhaust hole is formed in the top of the organic glasscover. A stainless steel sample base is arranged, a sample base is installed on the stainless steel sample base to serve as a soil sample containing platform, an inner confining pressure control system is arranged to be matched with the vertical loading rod to simulate the pressure borne by a soil sample in a complex environment, and a suction control system is arranged to simulate the soil sample drying process. The method is simple and easy to implement, the deformation characteristics and gas-liquid permeation law evolution of soil under complex test conditions can be monitored in real time, researchers can be helped to understand permeation, mechanics and deformation evolution mechanisms of the soil in a complex field environment, and the development of engineering disposal methods and basic theories is effectively helped.

Description

technical field [0001] The invention relates to the technical fields of geological engineering and geotechnical engineering, in particular to an isotropic isotropic dry-wet chemical cycle soil gas-liquid penetration test system. Background technique [0002] In recent years, with the change of extreme weather, the permeability of clay in complex environment, the change of mechanical behavior and the change law of gas-liquid permeability parameters of soil under dry-wet cycle have become the hotspots of research. Clay is a material with memory behavior. In rainy and humid seasons, the soil swells when it absorbs water; in dry seasons with little rain, the soil shrinks due to evaporation and loss of water. So reciprocating, the soil sample will be in the wet-dry alternate environment for a long time. This effect will lead to the following two changes in the soil sample: (1) During the dry-wet cycle process, a tensile stress field is gradually formed inside the soil. When the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826
Inventor 贺勇李冰冰张可能金福喜喻志鹏胡广蒋文强
Owner CENT SOUTH UNIV
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