Vacuum prepressing method of sand-free cushion layer of secondary circulation line system

A pipeline system and secondary cycle technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of long construction period, heavy repetitive workload, high cost, etc., to reduce project cost, protect pipeline system, The effect of reducing pressure

Inactive Publication Date: 2010-08-04
曾国海
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Problems solved by technology

When these technologies treat the foundation for the second time, they basically do not use the pipeline system used in the f

Method used

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  • Vacuum prepressing method of sand-free cushion layer of secondary circulation line system
  • Vacuum prepressing method of sand-free cushion layer of secondary circulation line system

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[0035] The present invention relates to a method for vacuum pre-pressing treatment of a sand-free cushion layer capable of secondary recycling of super soft soil foundation pipelines. The method includes the following technological processes (see figure 1 with figure 2 ):

[0036] Step 1. Shallow vacuum rapid consolidation:

[0037] a) Spread plastic woven cloth or geotextile in the area to be treated, apply vertical plastic drainage short board, and arrange horizontal plastic drainage short board (about 0.5m). The length of the vertical plastic drainage short board is 1-5m, the length of the vertical plastic drainage board connected with the horizontal plastic drainage short board is 1m, the length of other vertical plastic drainage short boards is 3-5m, and the vertical plastic drainage is short The spacing between the plates is 0.6-0.9m, arranged in a plum blossom shape.

[0038] b) Laying the main drainage pipe and branch drainage pipe. The drainage main pipe and the branch o...

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Abstract

The invention relates to a vacuum prepressing method of a sand-free cushion layer of a secondary circulation line system. In the method, the steps of superficial layer vacuum quick solidification, superficial layer vacuum secondary solidification and impacting compaction are used for prepressing, and the method specifically comprises the following steps of: distributing geotextile, a vertical plastic drainage short plate, a transverse plastic drainage short plate, a main drainage pipe and a secondary drainage pipe, wherein a vacuum film, a side ditch pressing film and a vacuum pump are arranged on the geotextile; paving a movable track and the vertical plastic drainage short plate; impacting and pressing a slag layer by using an impacting compactor, and the like. The invention overcomes the defects of high water content, low bearing capacity, difficult construction, and the like of vacuum prepressing soft foundation treatment and the defects of high expense, large repeated workload, long construction period, and the like of other methods. The invention has the advantages of strong bearing capacity, relatively simple construction, low expense, reduced workload, short construction period and obvious vacuum prepressing side sealing effect.

Description

technical field [0001] The invention relates to a treatment method for ultra-soft soil foundation, in particular to a vacuum preloading method for a sandless cushion layer in a secondary circulation pipeline system. Background technique [0002] With the rapid economic development of my country's coastal areas, using the rich tidal flat resources in coastal areas, the new land-making method of "blowing mud to backfill the site, vacuum preloading and solidifying soft foundation" has achieved certain results and saved a lot of mines And sand resources, protect the environment. [0003] Before the present invention, it was exposed in the process of land reclamation, especially the vacuum preloading soft foundation treatment: the water content of the dredged silt soil is high, the bearing capacity is low, and the construction machinery and equipment are difficult to enter the site; The site treatment is not deep, the bearing capacity of the site after treatment is low, and the s...

Claims

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Application Information

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IPC IPC(8): E02D3/10
Inventor 曾国海李燕青高有斌
Owner 曾国海
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