Fast curing system used for dredger fill of offshore reclamation and operation method of fast curing system

Abstract

The invention discloses a fast curing system used for dredger fill of offshore reclamation and an operation method of the fast curing system. The fast curing system comprises cathodes, anodes, plastic rigid main drain pipes, vacuum pumps, rectifiers, oscillators and the like. Alternating currents are converted into direct currents through the rectifiers. According to the fast curing system, curing of the dredger fill is enhanced through a combined process of vacuum negative pressure suction filtration drainage and electroosmosis reinforcement drainage, so that the curing effect of the dredger fill is improved. In the later period of vacuum-electroosmosis curing, grouting is conducted in generated cracks manually, thus the soil cracks are filled. Meanwhile, to-and-fro oscillation is conducted through an oscillation method, stress unevenness on the dredger fill is reduced, the number of the cracks generated in the base face of the dredger fill is reduced, the crack generation scale is reduced, and thus the curing effect of vacuum electroosmosis of the dredger fill is further improved. Through the combined process, the effect of reinforcement of dredger fill curing is achieved. Meanwhile, the fast curing system is simple in structure, the curing period is short, and through the process, curing of the dredger fill is achieved fast.

Description

technical field

[0001] The invention relates to a method for solidifying dredger fill soil for sea reclamation and land reclamation, in particular to a rapid solidification system and operation method for dredge fill soil used for offshore land reclamation. Background technique

[0002] Coastal areas such as the Yangtze River Delta, the Pearl River Delta, and the coastal economic belt have experienced rapid economic growth, but land resources are limited, and a large amount of land resources are needed in the process of economic development. Land reclamation projects have become a way to solve the shortage of land resources in coastal areas. The most ideal dredger filling material for land reclamation is medium-coarse sand. However, due to the shortage of sand sources in many coastal areas, if medium-coarse sand is used in a large area during land reclamation, it will bring a huge economic burden. Soil, as a kind of fluidized soft clay, is blown and filled by pumps to form l...

Examples

Embodiment 1

[0035] The vacuum-electroosmosis-dynamic oscillation of the present embodiment strengthens the dredger filling soil solidification system such as figure 1 , figure 2 and image 3 Shown, be to transport the dredging fill 10 by pump at the top of the muddy soil layer foundation 9, the dredging fill thickness reaches 3.5m, and then the sand cushion 15 of medium coarse sand is laid on the dredging fill upper part in the Pingcheng site, height 0.3m, The entire dredging fill area is built with cut-off walls to prevent the flow of dredged fill. Such as Figure 4 As shown, a cutting machine is used to draw a seam on a titanium tube electrode with a diameter of 40 mm. The sealing width of the seam opening 12 is 2 mm, and the distance between the seam is 500 mm. Then, a layer of geotextile 14 is wrapped on the surface of the seam electrode. The wrapped electrode is fixed with iron wire, and then the anode titanium tube 5 and the cathode titanium tube 6 are driven into the dredged la...

Embodiment 2

[0038] The CSSC Longxue Island shipbuilding base in Guangzhou is located on the right bank of the Pearl River outside Humen, on the east coast of the Longxue Island reclamation area. In March 2004, the silt was dredged and filled to a height of 4.3m. In order to finish the solidification of the silt in October 2004, the civil construction was carried out. The construction period was very tight, and the normal solidification and leveling work could not be carried out at all with the mud. Areas 6-13 of the 13 areas in the re-solidification area adopt vacuum-electroosmosis-dynamic oscillation curing projects, with a total curing area of ​​26,000 square meters.

[0039] First, build a silt retaining wall in the curing area, and then lay vacuum electroosmosis curing equipment. After 14 hours of vacuum electroosmosis, carry out the first dynamic load. The first load can be 800-1000KN m. Level the curing area. Carry out the second vacuum electroosmotic curing for 14 hours, and then ...

technical field

[0001] The invention relates to a method for solidifying dredger fill soil for sea reclamation and land reclamation, in particular to a rapid solidification system and operation method for dredge fill soil used for offshore land reclamation. Background technique

[0002] Coastal areas such as the Yangtze River Delta, the Pearl River Delta, and the coastal economic belt have experienced rapid economic growth, but land resources are limited, and a large amount of land resources are needed in the process of economic development. Land reclamation projects have become a way to solve the shortage of land resources in coastal areas. The most ideal dredger filling material for land reclamation is medium-coarse sand. However, due to the shortage of sand sources in many coastal areas, if medium-coarse sand is used in a large area during land reclamation, it will bring a huge economic burden. Soil, as a kind of fluidized soft clay, is blown and filled by pumps to form l...

Examples

Embodiment 1

[0035] The vacuum-electroosmosis-dynamic oscillation of the present embodiment strengthens the dredger filling soil solidification system such as figure 1 , figure 2 and image 3 Shown, be to transport the dredging fill 10 by pump at the top of the muddy soil layer foundation 9, the dredging fill thickness reaches 3.5m, and then the sand cushion 15 of medium coarse sand is laid on the dredging fill upper part in the Pingcheng site, height 0.3m, The entire dredging fill area is built with cut-off walls to prevent the flow of dredged fill. Such as Figure 4 As shown, a cutting machine is used to draw a seam on a titanium tube electrode with a diameter of 40 mm. The sealing width of the seam opening 12 is 2 mm, and the distance between the seam is 500 mm. Then, a layer of geotextile 14 is wrapped on the surface of the seam electrode. The wrapped electrode is fixed with iron wire, and then the anode titanium tube 5 and the cathode titanium tube 6 are driven into the dredged la...

Embodiment 2

[0038] The CSSC Longxue Island shipbuilding base in Guangzhou is located on the right bank of the Pearl River outside Humen, on the east coast of the Longxue Island reclamation area. In March 2004, the silt was dredged and filled to a height of 4.3m. In order to finish the solidification of the silt in October 2004, the civil construction was carried out. The construction period was very tight, and the normal solidification and leveling work could not be carried out at all with the mud. Areas 6-13 of the 13 areas in the re-solidification area adopt vacuum-electroosmosis-dynamic oscillation curing projects, with a total curing area of ​​26,000 square meters.

[0039] First, build a silt retaining wall in the curing area, and then lay vacuum electroosmosis curing equipment. After 14 hours of vacuum electroosmosis, carry out the first dynamic load. The first load can be 800-1000KN m. Level the curing area. Carry out the second vacuum electroosmotic curing for 14 hours, and then ...

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