Large coarse-grained soil triaxial tester with seepage pressure control function
A technology of seepage pressure and triaxial test, which is applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, scientific instruments, etc., and can solve problems such as inability to apply seepage water pressure
Pending Publication Date: 2021-05-11
XIAN UNIV OF TECH
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- Application Information
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Problems solved by technology
[0006] The purpose of the present invention is to provide a large-scale triaxial tester for coarse-grained soil with seepage pressure control, which solves the problem that the triaxial tester in the prior art cannot stably apply seepage water pressure to the sample
Method used
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Embodiment
[0029] In this embodiment, the conventional triaxial test of coarse-grained soil is used as an example, and the device of the present invention is used to control the seepage water pressure during the experiment. The specific steps are as follows:
[0030] Step 1: Control the sample density according to the sample volume and sample quality, weigh the coarse-grained soil material of the required quality for the test, divide it into 5 parts, weigh each part according to different particle size groups, and mix them evenly;
[0031] Step 2: Put the latex film on the base of the pressure chamber with a ring-shaped rubber band, then fix the film-forming cylinder to the base of the pressure chamber through bolts, turn the latex film to the upper edge of the film-forming cylinder, and make it straight and Closely attached to the inner wall of the film-forming cylinder, place a permeable plate on the base of the pressure chamber, open the second valve, fill the permeable plate at the ba...
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Abstract
The invention discloses a large coarse-grained soil triaxial tester with a seepage pressure control function. The large coarse-grained soil triaxial tester comprises a seepage adjusting module, a pressure chamber and a measuring module which are sequentially connected, wherein the seepage adjusting module comprises a high-pressure gas cylinder and a closed water tank which are connected through a hose, the closed water tank is connected with a water source, the measuring module comprises an electronic balance, and a water container is arranged on the electronic balance. The large coarse-grained soil triaxial tester with the seepage pressure control function can directly apply seepage water pressure to a sample, can measure the stress-strain and strength relationship of the sample in different confining pressure, axial pressure, seepage water pressure and other stress states, and has the advantages of being simple and practical.
Description
technical field [0001] The invention belongs to the technical fields of geotechnical engineering and water conservancy engineering, and relates to a large-scale triaxial tester for coarse-grained soil with seepage pressure control. Background technique [0002] The soil mainly composed of gravel and sand is called coarse-grained soil. This material is widely distributed in nature and has the advantages of high compaction density, good water permeability, high shear strength, small deformation, and is not easy to liquefy due to earthquakes. It is widely used In geotechnical, water conservancy, bridge and other projects. Studies have shown that the coarse-grained soil of hydraulic engineering will have failure problems and cause structural instability, such as foundation instability, slope slippage, and seepage damage. In order to prevent such problems, it is necessary to study the shear strength, deformation characteristics, and stress-strain relationship of coarse-grained s...
Claims
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IPC IPC(8): G01N3/02G01N3/12
CPCG01N3/02G01N3/12G01N2203/0003G01N2203/0019G01N2203/0048G01N2203/0256Y02A90/30
Inventor 温立峰杨莹李炎隆
Owner XIAN UNIV OF TECH