Vacuum enhancing method for solidified dredging mud

A dredging mud and vacuum technology, applied in soil protection, construction, infrastructure engineering and other directions, can solve the problems of high water content in dredged mud, speed up drainage, etc., to reduce water content and gas content, prolong service life, water content reduced effect

Inactive Publication Date: 2015-03-25
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water content of the cured dredging mud is still very high. How to speed up the drainage is a very important issue in today's increasingly shorter construction period.

Method used

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Embodiment Construction

[0017] Specific embodiments of the present invention will be further described below.

[0018] The vacuum enhancement method of solidified dredging mud provided by the invention comprises the following steps:

[0019] Step 1, excavating a drainage channel on the surface of the solidified dredged soil body, and laying a layer of water-absorbing material inside the drainage channel, which is preferably a water-absorbing pad containing polyethylene material, etc.

[0020] Absorbent material is laid inside the gutter and in contact with the surface of the cured dredged soil body. The water-absorbing material is uniformly distributed with a plurality of small holes vertically solidified on the surface of the dredged soil body and penetrating the water-absorbing material. The pore diameter is 0.5-1.5 times the thickness of the water-absorbing material layer, and the pore distance is 1-20 times the pore size. That is, the water-absorbing material is laid on the surface of the solid...

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Abstract

The invention discloses a vacuum enhancing method for solidified dredging mud. The method comprises the following steps that 1, a drain channel is excavated in the surface of a solidified dredging mud body, and a water absorbing material is laid in the drain channel; 2, films high in strength are laid on the solidified dredging mud body and the drain channel, and the peripheries of the films and the periphery of the mud body are sealed; 3, a pipeline is laid between the films and the solidified dredging mud body and connected with a pump machine; 4, the pump machine is started for carrying out negative pressure vacuumizing to make the mud body be dehydrated; 5, after the stipulated amount of the water is dehydrated, the films are rolled and moved to the next operation face of the solidified dredging mud body, and the above steps are repeated. The vacuum enhancing method for the solidified dredging mud is adopted for processing the solidified dredging mud, and therefore all mechanical properties of the solidified dredging mud are improved.

Description

technical field [0001] The invention relates to a treatment method for vacuum dehydration to improve the mechanical properties of solidified dredging mud, in particular to a vacuum enhancement method for the mechanical properties of solidified dredged mud. Background technique [0002] Due to the physical and mechanical properties of dredged mud with high water content, high void ratio, high compressibility, and low bearing capacity, dredged mud in rivers and lakes with serious water pollution is also highly polluting, so the rational use of dredged mud is still an important issue. To explore difficult problems, the currently commonly used dredging mud treatment methods only include ocean dumping treatment, drainage treatment, solidification treatment, heating treatment, vacuum electroosmosis and dynamic compaction combined treatment. Dredged mud has engineering characteristics such as high clay content, high moisture content, high compressibility, low strength, poor permeab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10E02D2250/0053
Inventor 刘文白史旦达邓益兵蒋建平李霞沈超史文会高开仙
Owner SHANGHAI MARITIME UNIVERSITY
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