Immediate processing method for drainage solidifying of super soft soil shallow surface space

A drainage consolidation and treatment method technology, which is applied in the engineering field of ultra-weak foundation reinforcement, can solve problems such as inapplicability, achieve effective drainage consolidation, improve transfer and drainage efficiency, and avoid air leakage

Active Publication Date: 2013-01-09
CCCC FOURTH HARBOR ENG INST +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is limited to land reclamation projects to be filled, and is not applicable to existing weak soil foundations, or foundations that have formed soft soil in land areas

Method used

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  • Immediate processing method for drainage solidifying of super soft soil shallow surface space
  • Immediate processing method for drainage solidifying of super soft soil shallow surface space
  • Immediate processing method for drainage solidifying of super soft soil shallow surface space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Process horizontal drainage channel: use plastic blind ditch, soft permeable pipe, PVC filter pipe, sand blind ditch, sand belt and other materials as the core material of drainage channel, and wrap a layer of 90-200g / m 2 Drainage channels made of non-woven fabric.

[0031] (2) Bury the first layer of horizontal drainage channel network: if figure 1 As shown, horizontal drainage channels 11 are laid out at a parallel interval of 0.5-1.2m on the super-soft foundation surface, and a horizontal horizontal collecting pipe is connected to both ends of the horizontal drainage channel 11, and a horizontal horizontal collecting pipe is connected to each interval of 30-50m. , forming a layer of horizontal drainage channel network. The horizontal collecting pipes are separated by a certain interval, and the specific interval can be determined according to the power of the vacuum system and the length and width of the reinforcement area. Bellows 3 connections.

[0032] Pres...

Embodiment 2

[0041] (1) Process the horizontal drainage channel according to Example 1, using materials such as plastic blind ditch, soft permeable pipe, PVC filter pipe, sand blind ditch, abrasive belt, etc. as the drainage channel core material, and wrap a layer of 90 ~ 200g / m 2 of non-woven fabrics.

[0042](2) Bury the first layer of horizontal drainage channel network: if figure 2 As shown, horizontal drainage channels 11 are laid out on the super-soft foundation surface at a parallel spacing of 0.5-1.2m, and longitudinal drainage channels 12 are laid at a parallel spacing of 0.5-1.2m. The two ends of the horizontal drainage channel 11 are connected to the horizontal horizontal collecting pipe 13, and a horizontal horizontal collecting pipe is set at an interval of 30-50m; similarly, the vertical drainage channel 12 is also connected to its vertical horizontal collecting pipe, which is set at an interval of 30-50m A longitudinal horizontal collecting pipe, thereby forming a layer of...

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Abstract

The invention discloses an immediate processing method for drainage solidifying of a super soft soil shallow surface. The method comprises the following steps: (1) arranging a plurality of layers of horizontal drainage channel nets on the area to be reinforced of a super soft foundation, wherein each horizontal drainage channel net comprises a plurality of longitudinal, lateral or criss-cross horizontal drainage channels and a plurality of horizontal converging tubes, and the longitudinal, lateral or criss-cross horizontal drainage channels at the same layer are converged at the correspondinghorizontal converging tubes; (2) converging the horizontal converging tubes at different layers to a plurality of vertical corrugated pipe, and connecting the corrugated pipes with vacuumizing equipment to form a stereo net-shaped drainage system; and (3) laying a geotextile layer and 1-2 layers of sealing films on the surface of a reinforced area, utilizing the vacuumizing equipment to vacuumize, spraying water on the surfaces of the sealing films, and unloading about 30-60 days later. The immediate processing method provided by the invention can be used as a shallow surface pretreatment measure, and also can be used for carrying out one-time process on a foundation with lower requirement on processing depth until the processed foundation can meet the operating requirement. By utilizing the technology provided by the invention to reinforce the foundation, the construction period can be greatly shortened, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the fields of port engineering, highway engineering, construction engineering and the like, in particular to an engineering technology for super-soft foundation reinforcement such as silt or newly dredged floating mud, silt and the like. Background technique [0002] With the continuous and rapid development of my country's economy, the scale of infrastructure construction in my country's coastal areas in recent years has been unprecedented. A large number of land reclamation projects have been carried out. In order to reduce the cost, most land reclamation projects are combined with the dredging and dredging of waterways or sea outlets, and ultra-soft soil such as floating mud and silt is used as backfill materials. The surface layer of the foundation formed is ultra-soft soil with extremely high water content. Taking Tianjin Lingang Industrial Zone as an example, its average moisture content is more than 200%, its strength an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
Inventor 董志良张功新林军华罗彥黄锦雄邱青长胡继业周琦李燕乜树强冯晓莉
Owner CCCC FOURTH HARBOR ENG INST
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