Electroosmosis united air pressure separation device and technology

A technology of air pressure and electroosmosis, which is applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of restricting the development of electroosmosis, poor economic benefits, and poor treatment effect of deep soil, so as to facilitate drainage and consolidation Effect

Active Publication Date: 2013-10-30
ZHEJIANG UNIV
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Problems solved by technology

However, the electroosmosis method has high energy consumption, poor economic benefits, and poor treatm

Method used

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  • Electroosmosis united air pressure separation device and technology
  • Electroosmosis united air pressure separation device and technology
  • Electroosmosis united air pressure separation device and technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Experimental protocol

[0037] The size of the model box used is 700×300×400mm (outer edge). The electrode material is aluminum tube. During the test, the anode is also used as a jet tube. The anode is 450mm long, 16mm in outer diameter, and 10mm in inner diameter. Small holes with a diameter of 2mm are drilled at the bottom 50mm and 150mm. The cathode is 450mm long, with an outer diameter of 24mm and an inner diameter of 18mm, and small holes with a diameter of 4mm are evenly distributed in the bottom 300mm. The arrangement of the electrodes is in parallel dislocation arrangement, the distance between the electrodes of the same sex is 200 mm, and the distance between the electrodes of the opposite sex is 141 mm.

[0038] Set up a group of control experiments, that is, compare the two situations of electroosmosis-surcharge combined splitting and electroosmosis-surcharge. Electroosmosis-surcharge combined splitting test steps are as follows:

[0039] 1) Screw the c...

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Abstract

The invention discloses an electroosmosis united air pressure separation device and technology. In the device, an anode is connected to an externally connected air pressure source on the basis of an electroosmosis device, and fumaroles are drilled within 1/2 of the bottom of the anode; the anode serves as a gas ejector pipe; a part of a cathode which enters into a to-be-processed soft clay part is provided with drain holes, and the cathode serves as a drain pipe. The electrodes of the device are distributed in the way of parallel staggered distribution. The technology comprises the steps of: spraying gas to the flexible clay through the anode 12-30 hours after the electroosmosis is performed, controlling the air pressure within 250 kPa to 400 kPa for 10-20 min, then spraying high-pressure gas every four times. According to the invention, the beneficial effects below are achieved: 1) the drainage amount and the soil anti-shearing intensity of the electroosmosis united air pressure separation technology is increased by 10-16% than a pure electroosmosis technology when the soft clay in the same batch and with the same volume are processed for the same time, and 2) the electroosmosis united air pressure separation technology is better to be conductive to the drainage consolidation of deep soil than the pure electroosmosis technology.

Description

technical field [0001] The invention relates to an electroosmosis combined gas pressure splitting device and a process thereof for soft soil foundation treatment. Background technique [0002] Electroosmosis is a ground treatment method that accelerates drainage consolidation by applying an electric field on electrodes inserted into the soil. Under the action of the electric field, the water in the soil flows from the anode to the cathode, and is discharged at the cathode. Because the drainage rate of the electroosmotic method has nothing to do with the hydraulic permeability coefficient of the soil, but is related to its electroosmotic permeability coefficient, it has good applicability for treating soil with high water content and low hydraulic permeability coefficient such as silt and dredging fill. to be taken seriously. However, the electroosmosis method has high energy consumption, poor economic benefits, and poor treatment effect on deep soil. These shortcomings lim...

Claims

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Application Information

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IPC IPC(8): E02D3/11
Inventor 周建胡平川李一雯龚晓南陈宇翔
Owner ZHEJIANG UNIV
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