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Environment protection type efficient aerating powder for shield construction

An environment-friendly foaming agent technology, applied in the field of foaming agent, can solve the problems that it is difficult to fully meet the requirements of the foam, the foam is not fine and rich enough, and the diameter of the foam is different, and achieve low cost, rich and delicate foam, and uniform distribution Effect

Active Publication Date: 2009-06-24
GUANGZHOU AORUN SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the foaming agent has been improved in terms of foaming ratio and stability, the foam produced by the foaming device of the shield machine is not fine and rich enough, and the diameter of the foam is different, so it is difficult to fully meet the requirements of the foam in shield tunneling construction. Require

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare shield tunneling construction foaming agent 1000kg of the present invention, each component content is:

[0018] Sodium fatty alcohol polyoxyethylene ether sulfate 140kg

[0019] Diethanolamide Cocoate (6501) 30kg

[0020] Ethylene glycol butyl ether 30kg

[0021] Water 800kg

[0022] At normal temperature, first add 160kg water in the mixing tank, then drop into 140kg fatty alcohol polyoxyethylene ether sodium sulfate, 30kg coconut acid diethanolamide (6501) and 30kg ethylene glycol butyl ether successively under stirring state, stir evenly, Add 640kg of water again, stir until uniform and transparent.

Embodiment 2

[0024] Prepare shield tunneling construction foaming agent 1000kg of the present invention, each component content is:

[0025] Fatty alcohol polyoxyethylene ether ammonium sulfate 60kg

[0026] Coconut Monoethanolamide 60kg

[0027] Ethylene glycol propyl ether 60kg

[0028] Water 820kg

[0029] At room temperature, first add 160kg of water into the mixing tank, then add 60kg of fatty alcohol polyoxyethylene ether ammonium sulfate, 60kg of cocoic acid monoethanolamide and 60kg of ethylene glycol propyl ether in turn under stirring, stir evenly, and then add 660kg of water, stirred until uniform and transparent.

Embodiment 3

[0031] Prepare shield tunneling construction foaming agent 1000kg of the present invention, each component content is:

[0032] Sodium fatty alcohol polyoxyethylene ether sulfate 180kg

[0033] Diethanolamide Cocoate (6501) 20kg

[0034] Diethylene glycol ether 10kg

[0035] Water 790kg

[0036] Under normal temperature, first add 160kg water in the mixing tank, then drop into 180kg fatty alcohol polyoxyethylene ether sodium sulfate successively under stirring state, 20kg coconut acid diethanolamide (6501) and 10kg diethylene glycol ether, stir, Add 630kg of water again, stir until uniform and transparent.

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PUM

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Abstract

The invention discloses an environmental protection high efficiency foaming agent for shield construction. The foaming agent comprises the following components in percentage by weight: 5 to 20 percent of aliphatic alcohol polyethenoxy ether sulfate, 1 to 8 percent of alcohol amide, 0.5 to 8 percent of alcohol ether, and 64 to 93.5 percent of water. The foaming agent for shield construction has a high foaming ratio and produces abundant and fine foams with even diameter distribution. The produced bubbles have small pores, good lubricity and stability, simple production operation, and lower cost. The foaming agent can better meet the requirements of the slag soil improvement during the process of earth pressure balanced shield.

Description

technical field [0001] The present invention relates to a foaming agent, more specifically, the present invention relates to a foaming agent for shield construction. Background technique [0002] In recent years, subway tunnel projects have been excavated by a mechanical device called a shield machine. The type of shield machine currently used is mainly an earth pressure balance shield machine, which is characterized by using excavated muck as a support The stable medium of the excavation surface requires the muck as the supporting medium to have good plastic deformation, soft consistency and low permeability. Since the general soil cannot fully meet these characteristics, it needs to be improved. The technical point is to inject foam and other mixed materials into the front of the cutterhead of the shield machine and the soil bin, and then vigorously stir to improve the plasticity and stability of the excavated dregs. Mobility, reduce the water permeability of muck. This ...

Claims

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Application Information

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IPC IPC(8): C04B24/24C04B24/12C04B24/02C09K23/04C09K23/22C09K23/42
CPCC04B40/0039C04B2111/00724C04B24/023C04B24/166C04B38/10C04B2103/0005
Inventor 陈功雨张国欣
Owner GUANGZHOU AORUN SYNTHETIC MATERIAL
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