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Vacuum pre-loading combined electric process test apparatus and test method thereof

A test device and electrodynamic technology, which is used in soil material testing, material inspection products, infrastructure engineering, etc., can solve the problem of not ensuring the sealing of the device, and achieve the effect of low cost and easy operation.

Inactive Publication Date: 2016-09-07
SUN YAT SEN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, none of the existing test devices is suitable for the research of vacuum preloading combined with electrokinetic method while ensuring the sealing of the device.

Method used

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  • Vacuum pre-loading combined electric process test apparatus and test method thereof
  • Vacuum pre-loading combined electric process test apparatus and test method thereof

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Embodiment Construction

[0018] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] (1) The collected soil samples are divided into four layers and put into the tempered glass box (11). After each layer is compacted and leveled, a small electric vibrator is used to vibrate the soil to make the soil dense, and then the upper layer is installed. The plastic drainage board (6), the cathode (3) and the nylon mesh-wrapped anode (2) were respectively inserted into the soil sample (13), and the top of the drainage board (6) was located in the sand cushion (5). The soil sample (13) is covered with a 4cm thick sand cushion (5) for drainage, and the anode (2) and cathode (3) parts located in the sand cushion (5) are treated with insulating tape to prevent The electric current forms a channel in the sand cushion (5).

[0020] (2) After drilling one end of the exhaust pipe (7) and wrapping it with nylon mesh, bury it in the sand cushion (...

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Abstract

The invention relates to a vacuum pre-loading combined electric process test apparatus and a test method thereof, and belongs to the field of geotechnical engineering foundation treatment. The apparatus comprises a power supply part, a vacuum pump part and a box body part. The box body part is a transparent toughened glass box, soil in the box body is coated with a sand cushion, and the front side of the box body is provided with equidistant electric potential monitoring point hole sites. Cylindrical hollow graphite rods are inserted to two sides of the box body as a cathode and an anode, and the anode is a salt solution injection channel. A plastic water draining plate is inserted to a position close to the cathode, the top end of the water draining plate is positioned in the sand cushion and is connected with a conical flask through a rubber tube, and a vacuum pump is connected with the conical flask through the rubber tube. The invention also provides a method for carrying out vacuum pre-loading combined electric process test by using the apparatus. The apparatus can simulate vacuum pre-loading combined electric process soft soil reinforcement indoors, can guarantee test sealing and prevent electrode corrosion, and can be used to accurately measure the water draining effect, the settlement consolidating effect and the vacuum pre-loading combined electric process energy consumption ratio of soil.

Description

technical field [0001] The invention relates to a vacuum preloading combined electric method test device and a test method, which are suitable for indoor test research on soft soil foundation reinforcement in geotechnical engineering, and belong to the field of geotechnical engineering foundation treatment. Background technique [0002] In recent years, with the rapid development of coastal cities and port construction, the demand for land resources in coastal cities has been increasing day by day. Using hydraulic dredging to fill seabed silt for land reclamation has become an effective way to solve the shortage of land. The recent dredger fill usually has the characteristics of high water content, large void ratio, high compressibility, low permeability coefficient, low shear strength, strong thixotropy, low bearing capacity, and poor engineering properties, and is a typical weak soil layer. The low permeability of soft soils often results in expensive and lengthy disposal....

Claims

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Application Information

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IPC IPC(8): G01N33/24E02D3/10
CPCG01N33/24E02D3/10
Inventor 陈剑尚林署炯冉孟胶张澄博
Owner SUN YAT SEN UNIV
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