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Device and method for determining optimum intervention time of electroosmosis of silt and sludge

An optimal, electroosmotic technology, applied in the fields of geotechnical engineering, environmental science and engineering, which can solve the problems of not considering the optimal intervention time of electroosmosis, and failing to achieve efficient drainage and consolidation.

Pending Publication Date: 2018-06-19
湖北水总水利水电建设股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these studies did not consider the optimal time point of electroosmosis intervention when electroosmosis-vacuum preloading is combined. It is certain that electroosmosis does not intervene as early as possible, and intervening too late will not achieve more efficient drainage and consolidation. Therefore, it is very necessary to develop a device and method for judging the best time to intervene in silt and sludge electroosmosis

Method used

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  • Device and method for determining optimum intervention time of electroosmosis of silt and sludge
  • Device and method for determining optimum intervention time of electroosmosis of silt and sludge
  • Device and method for determining optimum intervention time of electroosmosis of silt and sludge

Examples

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Effect test

Embodiment 1

[0049] A device for judging the optimal timing of electroosmosis intervention in silt and sludge soil, including a vacuum pump 300, and also includes an electroosmosis model cylinder 100a, a vacuum effect model cylinder 100b, a vacuum+continuously energized electroosmosis model cylinder 100c, a vacuum + Intermittent electrification electroosmosis model cylinder 100d.

[0050] The electroosmosis model cylinder 100a is connected to the separator inlet of the first gas-water separator 200a through a hose, and the separator outlet of the first gas-water separator 200a passes through a hose provided with a first on-off control valve and a five-way valve. 302 connection;

[0051] The vacuum action model cylinder 100b is connected to the separator inlet of the second gas-water separator 200b through a hose, and the separator outlet of the second gas-water separator 200b is connected to the five-way valve 302 through a hose provided with a second on-off control valve. connected;

[...

Embodiment 2

[0063] Utilize a kind of device described in embodiment 1 to be used for judging the best intervention timing of silt, sludge soil electroosmosis to carry out the method for judging the best intervention timing of silt / sludge soil electroosmosis, comprising the following steps:

[0064] Step 1, place equal weight of sludge in the electroosmosis model cylinder 100a, the vacuum effect model cylinder 100b, the vacuum+continuous energization electroosmosis model cylinder 100c, the vacuum+intermittent energization electroosmosis model cylinder 100d, and drain the cathode and The height of the drainage anode changes according to the moisture content of the sludge. If the moisture content of the sludge is less than or equal to 100%, the height of the corresponding drainage cathode and drainage anode is 60% of the height of the sludge; The height of the cathode and the drainage anode is 50% of the sludge height; the moisture content of the sludge is greater than 300% and less than or e...

Embodiment 3

[0077] The mud in the step 1 in the embodiment 2 is replaced with the mud that the moisture content is respectively 60% or 80% or 150% or 200% or 250% or 300% or 600%, repeat the step 1~step in the embodiment 2 4. Obtain the best intervention time for electroosmosis of soil samples with different initial moisture content.

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Abstract

The invention discloses a device for determining the optimum intervention time of electroosmosis of silt and sludge. The device comprises a vacuum pump, a five-way valve, an electroosmotic action model cylinder, a vacuum action model cylinder, a vacuum and continuous electrifying electroosmosis action model cylinder and a vacuum and intermittent electrifying electroosmosis action model cylinder. The invention also discloses a method for determining the optimum intervention time of electroosmosis of silt and sludge. Silt / sludge soil vacuum-electroosmosis combined test under different experimental conditions can be obtained by one-shot enforcement, and the optimum action time under the vacuum and electroosmosis combined action is obtained according to experiment results. Measurement is alsoperformed under the following experiment conditions: test objects having different water content values, test objects having different particle grades, different electrifying modes, different water drainage cathode / drainage anode materials and different voltages between a drainage cathode and a drainage anode.

Description

technical field [0001] The invention relates to the fields of geotechnical engineering, environmental science and engineering, in particular to a device for judging the best timing of electroosmosis intervention of silt and sludge soil, and also relates to a device for judging the best timing of electroosmosis of silt and sludge soil. approach to timing. Applicable but not limited to testing various types of soft soil, silt soil, and polluted soil to judge the best timing of electroosmosis intervention when electroosmosis and vacuum are combined. Background technique [0002] In recent years, on the one hand, major rivers, rivers, and lakes in China have been seriously silted up and dredging is urgently needed; on the other hand, the land formed by dredged ultra-soft silt soil urgently needs to be developed and utilized to alleviate the growing pressure on land supply or traffic. contradiction. Dredged lacustrine dredged fill has the characteristics of high water content, ...

Claims

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Application Information

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IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 朱栋梁柏巍王唯伟朱丹孔令伟林融冰黎澄生程定波
Owner 湖北水总水利水电建设股份有限公司