Cosolidation with sludge dredging and water draining

A technology for drainage, consolidation and dredging of silt, which is used in water filling, infrastructure engineering, construction, etc., can solve the problems of long consolidation time and low silt permeability coefficient, and achieve sustainable development and save engineering. Cost, the effect of eliminating the need for secondary processing

Inactive Publication Date: 2006-08-16
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

[0007] (3) The permeability coefficient of silt is very low, and the consolidation time of flushing and filling silt is very long, which usually takes several years or even longer to consolidate

Method used

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  • Cosolidation with sludge dredging and water draining
  • Cosolidation with sludge dredging and water draining
  • Cosolidation with sludge dredging and water draining

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Embodiment Construction

[0029] There is a large amount of marine silt in the harbor basin in front of a caisson-type wharf in a port that needs to be dredged, and a large amount of backfilling is required in the rear freight yard area for land reclamation. Therefore, the dredging and consolidation method of silt drainage is used for land reclamation. The silt is sucked out of the pool and then transported to the rear freight yard area through the pipeline. This method is used for treatment. The expected strength of the cross plate of the soil after filling is 30kPa. The specific operation steps are as follows:

[0030] 1) In the rear area, use riprap to form a cofferdam with a thickness of 0.5m;

[0031] 2) Fill a layer of silt into the cofferdam with a thickness of 1.5m, and then fill a layer of 0.4m sand layer on the top of the silt, and the sand layer will sink into the silt under its own weight to form a silt-sand mixture.

[0032] 3) Repeat step 2) until the design elevation;

[0033] 4) After...

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Abstract

This is a quick damming method suitable for yielding soil treatment composed by several layers of sullage and sand. At building, a layer of sullage is dumped then a layer of sand. Sand will sink into sullage by gravity to increase sullage penetrability. The procedure is repeated till reach the designed height. Put loading, like water bag, to the dam top to move out water and solidify.

Description

technical field [0001] The invention relates to a sludge solidification method, which is suitable for the treatment of soft ground and belongs to the technical field of civil engineering. Background technique [0002] With the rapid development of my country's economy, construction projects such as port engineering, waterway engineering, and water conservancy engineering have increased rapidly. In the dredging process of various waterways and in the construction and expansion of ports, a large amount of dredged soil is usually produced. According to incomplete statistics, the discarded dredged silt in my country reaches 100 million m3 every year. 3 Above, the engineering quantity of dredging silt treatment is very considerable. Currently, there are two methods of silt treatment that are often used. One is to throw the silt into the sea, and the other is to fill the land with cofferdams near the shore. [0003] The land reclamation method of the cofferdam near the shore is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/18E02D27/28
Inventor 洪振舜邓永锋沈水龙
Owner SOUTHEAST UNIV
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