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Drainage consolidation method without keeping drainage channel after work of soft soil foundation

A drainage channel, drainage consolidation technology, applied in soil protection, infrastructure engineering, construction and other directions, can solve the problems of upper foundation and structure damage, high maintenance costs, reducing the design life of buildings and municipal pipeline pavements, etc. Achieve the effect of increasing the effective reinforcement depth, reducing post-construction settlement and speeding up the consolidation speed

Inactive Publication Date: 2010-09-15
曾国海
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the foundation treatment, there are drainage channels to speed up the consolidation of the soft soil site; but after the construction, there are also drainage channels remaining in the soft soil, and the pore water in the underlying deep soft soil layer is continuously discharged through the drainage channels, and the pore water The pressure drops, and the site soil continues to undergo secondary consolidation and settlement after construction, causing damage to the upper foundation and structure, reducing the design life of buildings, municipal pipelines, and road surfaces, and resulting in high maintenance costs

Method used

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  • Drainage consolidation method without keeping drainage channel after work of soft soil foundation
  • Drainage consolidation method without keeping drainage channel after work of soft soil foundation
  • Drainage consolidation method without keeping drainage channel after work of soft soil foundation

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Embodiment Construction

[0034] Such as figure 1 , figure 2 Shown:

[0035] Step 1. Install the vertical drainage filter pipe:

[0036] 1. High-pressure water gun impacts into holes

[0037] According to the design requirements, stake out the hole position of the vertical drainage filter pipe 2 in the area to be treated, and clean up the debris on the hole to be drilled; use a high-pressure water gun to impact the hole, the hole diameter is controlled within 15cm, and the hole depth is generally 6.5- About 7.0 meters. The high-pressure water gun impact hole-forming construction technology can overcome the difficulty of inconvenient movement of traditional board-making machines in soft soil.

[0038] 2. Press buried vertical drainage filter pipe 2

[0039] The vertical drainage filter pipe 2 is covered with a geotextile bag, and the geotextile bag is placed under the end plate 10 of the vertical drainage filter pipe 2, and the geotextile bag is fixed on the filter rod thread 13 with iron wire or ...

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Abstract

The invention relates to a drainage consolidation method without keeping drainage channel after work of a soft soil foundation, which can be recycled by a system. The method comprises the following steps of: impacting to form a hole by using a high pressure gun; pressing and burying a vertical drain filter pipe into the hole; connecting a flexible seepage filer pipe with the vertical drain filter pipe; connecting the other end of the flexible seepage filter pipe with a horizontal branch drain; connecting the horizontal branch drain with a horizontal main drain; paving geotextiles, and paving vacuum films on the geotextiles; connecting the horizontal main drain with a vacuum pump for vacuumizing; and detaching the parts, filling left holes, filling slag, excavating gutters, and impacting and compacting the slag layer by using impact compactor. The method overcomes the respective defects of the pile foundation technology, composite foundation technology and consolidated drained technology. In the method, recyclable vertical drainage filter pipe and horizontal main and branch drain structures are adopted, the construction cost is reduced, the field settlement after work is decreased, the transmission channel for vacuum pressure is widened, and the consolidation speed of the reinforced soil is improved.

Description

technical field [0001] The invention relates to a soft soil foundation treatment method, in particular to a drainage consolidation method which does not leave a drainage channel after construction of the soft soil foundation which can be recycled. Background technique [0002] In recent years, the development and construction of coastal areas has accelerated, and tidal flats are becoming the main source of construction land in various places. The soil quality of tidal flats is mainly silt soil and cohesive soil, and its overall characteristics are high water content, strong compressibility, poor permeability, low bearing capacity, and deep distribution of soft soil layers. The natural elevation of tidal flats is generally relatively low, so it is first necessary to fill the site to a certain height for development and construction to meet flood control requirements. In recent years, the rich silt soil and cohesive soil resources of tidal flats have been often used, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10E02D3/046
Inventor 曾国海李燕青包闻录
Owner 曾国海
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