Electronic-clogging experiment device of geotextile

A geotextile and electrodynamic technology, which is applied in measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problems of reduced permeability, inability to judge silting well, and inability to measure the permeability coefficient of geotextiles alone, etc. achieve accurate evaluation

Inactive Publication Date: 2014-05-21
王军
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Problems solved by technology

[0006] However, the existing clogging tester and gradient ratio evaluation criteria have some shortcomings: during the seepage clogging test, fine particles in the soil migrate, and if clogging occurs in the geotextile, it will reduce its permeability
However, the existing clogging tester can only measure the permeability coefficient of the system co...

Method used

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  • Electronic-clogging experiment device of geotextile
  • Electronic-clogging experiment device of geotextile
  • Electronic-clogging experiment device of geotextile

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:

[0017] Such as figure 1 , figure 2 , image 3 As shown, disassemble the flange 1 in the middle of the permeameter, fix the circular perforated metal cathode 3 with bolts 2 at the bottom of the permeameter, fix the circular geotextile 4 to be tested in the middle of the flange 1, and tighten it. Blue plate 1, loosen the flange plate 5 on the top of the penetrometer, load a soil sample 6 with a height of 100 mm, fix the circular perforated metal anode 8 with bolts 7 on the top of the penetrometer, tighten the flange plate 5, and place the penetrometer Place it on the test bench 9, install the auxiliary water inlet container 11 on the bracket 10, close the valve 12, fill the auxiliary water inlet container 11 with anaerobic water, install the constant head water inlet container 14 on the bracket 13, and close the valve 15 , connect the valve 12 to th...

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Abstract

The invention relates to an electronic-clogging experiment device of a geotextile. The device consists of three parts, namely, a penetration test main body device consisting of an experiment table, a permeameter, a piezometer tube and a water head scale, a constant water head supply device consisting of a bracket, an auxiliary water inlet container, a valve, a water supply tube, a constant water head inlet container, a water outlet tube, a constant water head outlet container and an overflowing tube, and a voltage loading device consisting of a direct current power supply, an insulating lead, a metal bolt and a drilling circular metal electrode. By using the penetration test main body device and the penetration test main body device, continuous hydraulic power penetration tests with different hydraulic power gradients can be performed to the geotextile, and continuous electric penetration tests with different hydraulic power gradients can be performed to the geotextile by applying a uniform direct current electric field inside the permeameter through the voltage loading device, so that the influence on the clogging of the geotextile caused by electronic effect can be studied.

Description

technical field [0001] The invention relates to a scientific test device for dynamically changing the permeability of geotextiles caused by electrokinetic effect combined with osmotic silting effect. Background technique [0002] As a filter material, geotextiles will inevitably produce different degrees of clogging, so how to judge whether geosynthetics will produce unacceptable clogging in actual projects and how to improve the clogging of geotextiles is still not very good at home and abroad. solved problem. [0003] One of the methods for testing and evaluating clogging characteristics of geotextiles is the indoor test using the gradient ratio method, also known as gradient ratio test or indoor clogging test. Gradient ratio is one of the representative indicators for clogging evaluation. It was proposed by Calhoun in 1972, and was adopted by the U.S. Army Division (1977) and revised as the gradient ratio criterion. The expression is: [0004] [0005] Therefore, the...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 王军宓炜王鹏符洪涛蔡袁强金亚伟丁光亚胡秀青谷川郭林卫会星
Owner 王军
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