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A construction technique and device for land reclamation by dredging and filling silt

A technology of land reclamation and silt filling, which is applied in the direction of the device where the axis of the swirling flow can be reversed, the filling of land, and the swirling device, etc., which can solve the problems of inability to follow up construction and slow deposition of silt.

Inactive Publication Date: 2011-12-14
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it can solve the problem that the silt deposition is slow and the follow-up construction cannot be carried out quickly in the land reclamation

Method used

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  • A construction technique and device for land reclamation by dredging and filling silt
  • A construction technique and device for land reclamation by dredging and filling silt
  • A construction technique and device for land reclamation by dredging and filling silt

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Embodiment 2

[0038] In a land reclamation site on a seashore, the mud discharged from the overflow device 6 in the sludge dehydration and classification system A of the present invention is blown and filled to a height of 2 meters in the enclosure to form the foundation sludge layer. A layer of braid is laid on the surface of the basic mud layer. The braid is a two-dimensional structure braided by wattle, which can effectively prevent the concentrated mud with coarse particle size and high mass density from sinking into the low-density basic mud layer.

[0039] The coarse particle concentrated mud separated in the sludge dehydration and classification system A is mainly powder particles with a particle size of less than 50 μm, and a curing agent needs to be added, and the amount of curing agent cement is 8%. The total speed at which 20 conical main body devices 4 are input to the mud and curing agent mixing device 9 through the underflow device 5 is 0.03 tons / second, and the speed at which...

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Abstract

The invention relates to a construction process for blowing-filling sludge and reclaiming land from sea and a device thereof. The device comprises a sludge dehydrating and grading system A, a solidification treatment system B and an improved slurry paving system C. The construction process comprises the following process flows: (1) in a designated area, blowing-filling the slurry discharged according to a common blowing-filling process or by an overflow device to a designated level to form a foundation slurry layer; (2) paving a permeable isolating layer e on the surface of the foundation slurry layer; (3) feeding sludge slurry a into the sludge dehydrating and grading system A to make the coarse concentrated slurry with low water content and coarse grain diameter enter a slurry and curing agent mixing device; (4) conveying a curing agent of a curing agent storage device to the slurry and curing agent mixing device through a curing agent conveying device; (5) stirring the slurry and the curing agent, and evenly stirring a mixture of the slurry and the curing agent through a discharge device to form modified slurry to be conveyed to a required place; and (6) adopting the paving system to pave the modified slurry to the designated thickness on the permeable isolating layer e layer by layer.

Description

(1) Technical field [0001] The invention relates to a construction technique and a device for land reclamation by dredging and filling silt, and belongs to the technical field of civil engineering foundation treatment. (2) Background technology [0002] In recent years, there have been a large number of land reclamation projects in my country's coastal areas, such as Tianjin, Bohai Bay, Guangdong coastal areas, Yangtze River Delta, and Pearl River Delta. Among them, only Tianjin Binhai New Area plans to reclamation of 170 square kilometers from the sea. At present, many land reclamation projects in our country adopt the dredging mud filling method, that is, the seabed mud is blown into the enclosure, and the mud becomes a foundation with a certain bearing capacity after certain treatment. [0003] At present, the main method to deal with these dredging silts is to use drainage consolidation method to carry out foundation reinforcement treatment after falling silt. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/18B04C9/00B04C5/00B07B1/28B07B1/22
CPCY02A10/00
Inventor 范一锴李战国皮进黄新
Owner BEIHANG UNIV
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