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Electric osmosis and cathode vacuumizing combined soft soil reinforcement device and method

A reinforcement device and vacuum pumping technology, which is applied in the fields of soil protection, construction, infrastructure engineering, etc., can solve problems such as uneven reinforcement effect and inconspicuous soil reinforcement effect, and achieve uneven reinforcement effect and good economic benefits , The effect of reducing construction costs

Inactive Publication Date: 2015-08-12
HOHAI UNIV
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Problems solved by technology

[0003] Existing studies have shown that the free water and some weakly bound water in the soil can be quickly discharged by electroosmosis, which is suitable for the drainage of silt, muddy clay and sludge with low permeability coefficient, but the simple electroosmosis method has a strengthening effect Inhomogeneity, that is, the reinforcement effect of the soil near the cathode is not obvious

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  • Electric osmosis and cathode vacuumizing combined soft soil reinforcement device and method
  • Electric osmosis and cathode vacuumizing combined soft soil reinforcement device and method
  • Electric osmosis and cathode vacuumizing combined soft soil reinforcement device and method

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Embodiment Construction

[0026] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0027] The structural representation of the soft soil reinforcement device of the present invention can be found in figure 1 , the method of using this device to reinforce the soft soil 7 is:

[0028] S1. Cathode and anode stakeout, the distance between stakeout points is 1-2m;

[0029] S2. The drilling rig drills at the stakeout point of the hole position, and the deviation of the hole position is controlled to be ≤5cm, and the verticality is controlled to be ≤3%;

[0030] S3, the steel pipe 5 wrapped filter cloth 4 is inserted into the cathode hole, and the steel bar 6 is inserted into the anode hole, while ensuring that the steel pipe 5 and the steel bar 6 are all submerged in the soft soil 7, so that the cathode is kept sealed and the anode is in a non-drained environment when the cathode is evacuated. It should be noted that the di...

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Abstract

The invention discloses an electric osmosis and cathode vacuumizing combined soft soil reinforcement device and method which are used for reinforcing a foundation with low bearing force. A steel pipe is adopted as a cathode, and a steel bar is adopted as an anode, so that pore water in soft soil moves towards the cathode under the action of an electric field, and soft soil near the anode is reinforced; after a jet pump is started, the jet pump generates vacuum in the cathode steel pipe, pore water near the cathode is sucked into the cathode steel pipe under vacuum action, and soft soil near the cathode is also reinforced, so that the problem that the reinforcement effect of the prior art is not uniform is solved. Meanwhile, a sand cushion layer and a sealing film do not need to be laid, the procedure is simpler, the construction process is simplified, the construction cost is reduced, the construction period is shortened, and good economic benefits are achieved.

Description

technical field [0001] The invention relates to a soft soil reinforcement device and a reinforcement method combined with electroosmosis and cathode vacuuming, which are suitable for reinforcement treatment of soft soil and silt soil, and belong to the technical field of foundation reinforcement of geotechnical engineering. Background technique [0002] Since Reuss discovered the phenomenon of electroosmosis in clay at the beginning of the 19th century, the technology of electroosmosis treatment of soft soil has been widely used in engineering practice. Electroosmosis is by applying a direct current electric field to the soil. Since the surface of soil particles is usually negatively charged, there are cations in the pore water that are balanced with it. Under the action of the electric field, the cations move to the negative electrode and drive the water molecules to move together to achieve drainage. [0003] Existing studies have shown that the free water and some weakly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11
Inventor 彭劼叶汉明李能金浩然何想胡建斌谢高强
Owner HOHAI UNIV
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