Large-area hydraulic fill dredging powder ground base disposed by vibration liquidizing drainage

A technology of vibration liquefaction and drainage method, which is applied in soil protection, infrastructure engineering, construction, etc., and can solve problems such as unsatisfactory

Inactive Publication Date: 2013-07-10
上海交通建设总承包有限公司 +1
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  • Abstract
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Problems solved by technology

[0003] The problem to be solved in the present invention is to develop a method suitable for large-area dredging and dredging silt foundation treatment under the condition that construction personnel and mechanical equipment cannot enter the site for foundation treatment.

Method used

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  • Large-area hydraulic fill dredging powder ground base disposed by vibration liquidizing drainage
  • Large-area hydraulic fill dredging powder ground base disposed by vibration liquidizing drainage
  • Large-area hydraulic fill dredging powder ground base disposed by vibration liquidizing drainage

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Embodiment Construction

[0009] The present invention utilizes water excavator (see figure 1 ) There are two buoyancy tanks 1 to enable the water excavator to run normally on the surface 5 of saturated dredging silt. Carry out vibration liquefaction and drainage on the dredged powder soil foundation 6. When vibrating, the grab bucket vibrates vertically and downwards, and can also vibrate in the horizontal direction to a distance of 2.0m. Repeated vibrations can fully liquefy the vibrating parts; excavate drainage ditches 7 at intervals of 20m×20m on the site (see figure 2 ) to remove the free water that is vibrated and liquefied by the grab bucket of the water excavator, and the section 8 of the drainage ditch (see image 3 ) with a width of 1.0m and a depth of 0.5m. After the drainage construction is completed, a land excavator will be used to reinforce the local area with poor treatment effect. The above vibration liquefaction drainage method can be repeated 5 to 8 times, and the time interval b...

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Abstract

A large-area hydraulic fill dredging powder ground base disposed by a vibration liquidizing drainage relates to a disposition of hydraulic fill dredging powder ground soft base in geotechnical engineering and port engineering. The technical scheme adopted the invention in that a waterborne excavator and a land excavator are adopted. The base is characterized in that a vertical or horizontal vibration force is exerted to the powder ground base by using a grab bucket of the waterborne excavator; a vibration part is fully liquidized through the repeated downward and upward vibrations of the grab bucket; drainage ditches are excavated at a interval of 20 m * 20 m in the field to drain the free water liquidized by the vibration of the waterborne excavator; and local areas with poor disposing effect are reinforced and disposed by the land excavator. The invention is used for large-area hydraulic fill dredging powder ground base disposition.

Description

technical field [0001] The invention relates to a foundation treatment project for large-area dredging and dredging silt in geotechnical engineering and port engineering. Background technique [0002] In geotechnical engineering and port engineering, the completed and ongoing dredging projects are mainly dredging sand, and the foundation treatment methods are mainly vibro-shock method and dynamic compaction method. In recent years, due to the shortage of sand sources, dredging and filling of silt has been adopted, and the foundation treatment methods are mainly surcharge preloading and vacuum preloading. The particle size of dredged dredged silt is different from the above two types of soil. It is a very rare dredged fill foundation project. There is no corresponding treatment method for dredged dredged silt foundation in current regulations. Contents of the invention [0003] The problem to be solved in the present invention is to develop a method suitable for large-area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/046E02D3/10
Inventor 程有彬吴兴元楼启为顾勇蔡建刘志清李杰袁俊俊吴壮
Owner 上海交通建设总承包有限公司
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