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Processing system and carbonization pile-forming method used for ground stabilization

A treatment system and foundation reinforcement technology, applied in sheet pile walls, soil protection, infrastructure engineering, etc., can solve problems such as leaking surface layers, difficulty in reinforcement, etc., and achieve the effect of improving efficiency and saving costs.

Active Publication Date: 2014-08-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an energy-saving, environment-friendly, economical and rapid treatment system for strengthening foundations and a carbonization pile method, using a foaming device to effectively mix carbon dioxide into the soil and carbonize under the dense and high-strength covering layer formed by the accelerated curing device Reinforcement solves the problems of serious surface carbon dioxide gas leakage and difficult surface reinforcement during the carbonization process, and can be continuously constructed, significantly improving the efficiency of foundation treatment

Method used

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  • Processing system and carbonization pile-forming method used for ground stabilization
  • Processing system and carbonization pile-forming method used for ground stabilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] a. select anionic surfactant type foaming agent, foaming agent and distilled water are mixed with foaming liquid by mass ratio 1:30, and the half-life of its foam is about 30min, and pack in the foaming device 13; And dry active Magnesium oxide is packed into curing agent storage tank 21; When the radius of stirring blade 5 is less than 200 mm, when the rotational speed of stirring shaft 7 is less than 30 r / min, the lifting speed is less than 0.5 m / min, and the pressure of regulating pressure regulating valve a14 is respectively 150 kPa, for carbon dioxide gas foaming, and adjust the pressure of the pressure regulating valve c24 to 200 kPa, and perform gas drying;

[0047] b. Move the helical cutting drill bit 1 to a preset pile position, start the stirring device in the penetrating state, the helical cutting drill bit 1 cuts the soil, and the stirring blade 5 breaks the soil and stirs and penetrates into the preset pile position Stop at the predetermined depth of 10m; ...

Embodiment 2

[0054] a. select protein foaming agent, and foaming agent and distilled water are formulated into foaming liquid by mass ratio 1:40, and the half-life of foam is about 45min, and pack in foaming device 13; Magnesium is packed into curing agent storage tank 21; when the radius of stirring blade 5 is 200-300 mm, and the rotation speed of stirring shaft 7 is 30-100 r / min, the lifting speed is 0.5-1.0 m / min, adjust the pressure regulating valve The pressure of a14 is 300 kPa, and the carbon dioxide gas is foamed, and the pressure of the pressure regulating valve c24 is adjusted to 300 kPa, and the gas is dried;

[0055] b. Move the helical cutting drill bit 1 to a preset pile position, start the stirring device in the penetrating state, the helical cutting drill bit 1 cuts the soil, and the stirring blade 5 breaks the soil and stirs and penetrates into the preset pile position Stop at the predetermined depth of 20m;

[0056] c. Start the stirring device in the lifting state, open...

Embodiment 3

[0062] a. Select anionic surfactant foaming agent and protein foaming agent, and mix them at a mass ratio of 1:1. The foaming speed of anionic surfactant foaming agent is faster than that of protein foaming agent, but the foam stabilization time is short In the protein foaming agent, and mixed foaming agent and distilled water by mass ratio 1:40 to prepare foaming liquid, and pack in the foaming device 13; And dry active magnesium oxide and quicklime powder by mass ratio : 1 mixed into curing agent storage tank 21; when the radius of stirring blade 5 was 300-400 mm, and the rotating speed of stirring shaft 7 was 30-100 r / min, the lifting speed was 0.5-1.0 m / min, adjust The pressure of the pressure valve a14 is 400 kPa, and the carbon dioxide gas is foamed, and the half-life of the foam is about 30 minutes, and the pressure of the pressure regulating valve c24 is adjusted to 400 kPa, and the gas is dried;

[0063] b. Move the helical cutting drill bit 1 to a preset pile positio...

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Abstract

The invention discloses a processing system and a carbonization pile-forming method used for ground stabilization. The processing system comprises a stirring device, a curing agent supply device, a foam supply device and a curing accelerating device. The foundation is reinforced by using the system, a light roasting activity magnesia powder or a mixture of the light roasting activity magnesia powder and quicklime powder is used as a curing agent, and carbon dioxide foams are generated by one of or a mixture of anion surface activity foaming agent, a protide foaming agent or a compound foaming agent according to different half-life period characteristics of the foaming agents; a sealing film and a movable sealing cover are used as temporary shields used for accelerating the formation of a curing soil layer, and a covering film with high compactness is provided for the carbonization of a lower pile body. The energy-saving and environment-friendly new curing agent is adopted, the gas leakage of carbon dioxide and the using amount of ventilating guide pipes in the construction are reduced simultaneously, and the processing system and the carbonization pile-forming method have the advantages of energy conservation, emission reduction, sustainable development and efficient construction in the raw material production and construction processes.

Description

technical field [0001] The invention relates to the field of civil engineering foundation treatment, in particular to a treatment system for foundation reinforcement and a carbonization pile forming method. Background technique [0002] The emission of greenhouse gases such as carbon dioxide is increasing day by day, and has become one of the bottlenecks restricting the development of social economy and ecological environment. my country is in the rapid stage of economic development, and the relevant industrial chains radiated by the construction industry bear unshirkable social responsibilities for resource consumption and environmental impact. Developing low-carbon buildings and advocating energy conservation and emission reduction have become the mainstream of the international construction industry. The objective necessity of the development of my country's construction industry. [0003] According to statistics, the annual global Portland cement production exceeds 2.5 b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D5/46
Inventor 刘松玉蔡光华易耀林杨泳章定文
Owner SOUTHEAST UNIV
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