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Electro-osmotic consolidation method of large triaxial test of gravel admixture

A triaxial test and electroosmosis technology, which is used in analytical materials, preparation of test samples, measurement devices, etc., can solve the problems of long consolidation time and low test efficiency, and achieve convenient electrode conversion, increase operation difficulty, and improve operation handy effect

Active Publication Date: 2010-03-10
HOHAI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of long consolidation time and low test efficiency of the above-mentioned large triaxial test sample, and propose an electroosmotic consolidation method for large triaxial test of gravel material

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  • Electro-osmotic consolidation method of large triaxial test of gravel admixture

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Embodiment Construction

[0027] The method of the present invention is used for the large triaxial test of the gravel core wall material, and its apparatus is as figure 1 shown.

[0028] A large triaxial test electroosmotic rapid consolidation method for gravel-mixed core wall materials, the specific technical steps are:

[0029] (1) On the base 3 and the cover plate 2 of the large-scale triaxial instrument, drain holes 9 and passages for wires to pass through are respectively reserved.

[0030] (2) Place the insulating plate 7 on the base 3. The insulating plate 7 is located on the top surface of the base 3. The diameter is the same as that of the sample 4, which is 300 mm, and the thickness is 1-2 mm. The insulating plate 7 is reserved for the wire 8 to pass through. Aperture, insulating plate 7 is made of insulating hard plastic, requires small deformation, and the effect of insulating plate 7 is to insulate between the lower electrode plate 6 and the base 3 to prevent leakage.

[0031] Place the...

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Abstract

The invention discloses an electro-osmotic consolidation method of a large triaxial test of gravel admixture. The two ends of a sample in a large triaxial apparatus are respectively provided with an electrokinetic geosynthetics electrode and are connected with an external power through wires, and the sample generates electro-osmotic consolidation under the action of an electric field. The method of the invention can greatly shorten the consolidation time of the sample of the large triaxial test, improve work efficiency, and simultaneously ensure even sample consolidation. In the invention, electrodes, wires and power supply are only arranged on the triaxial apparatus additionally, and the method is low in application cost, convenient in operation, and quick and effective in consolidation of gravel admixture in the large triaxial test.

Description

technical field [0001] The invention relates to a consolidation method for a large triaxial test, in particular to an electroosmotic consolidation method for a large triaxial test with gravel. Background technique [0002] There are many high-core rockfill dams under construction or to be built in Southwest my country, and the height of many dams reaches more than 200m, or even 300m. The traditional method of using cohesive soil core wall as anti-seepage body can no longer meet the strength and deformation requirements of super-high earth-rockfill dam core wall. After rolling, gravel soil can generally obtain higher density and strength, lower compressibility and better anti-seepage performance. This kind of gravel mixed material has been widely used as core wall anti-seepage in high earth-rock dam engineering seepage material. [0003] In the design and calculation of high core wall dams, it is necessary to understand the strength and deformation characteristics of gravel...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N3/00
Inventor 刘汉龙丁选明杨贵沈扬
Owner HOHAI UNIV
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