CN103964726A - Foaming agent for earth pressure balance shield - Google Patents
Foaming agent for earth pressure balance shield Download PDFInfo
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- CN103964726A CN103964726A CN201310028006.5A CN201310028006A CN103964726A CN 103964726 A CN103964726 A CN 103964726A CN 201310028006 A CN201310028006 A CN 201310028006A CN 103964726 A CN103964726 A CN 103964726A
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Abstract
The invention provides a soil improvement foaming agent for earth pressure balance shield construction. The foaming agent is formed by compounding 4 to 15% of fatty alcohol sulfate, 0 to 2% of fatty acid salt, 0 to 6% of alpha-olefin sulfonate, 3 to 8% of fatty alcohol polyoxyethylene ether sulfate, 0.1 to 2% of a foam stabilizer and 0.1 to 1% of a foaming aid, with the balance being water. The foaming agent is diluted and mixed with air and then foamed by a foam generation device, and tiny bubbles with a high expansion ratio, high stability, uniform distribution and a diameter of 5 to 300 mu m can be generated; the diameters of bubbles generated by other current foaming agents in China are normally 10 to 400 mu m; and smaller bubbles are more suitable for fine silt layer shield construction soil improvement. At normal temperature and normal pressure, the foam expansion ratio of foaming agent provided by the invention reaches 30 to 90 times, while the foam expansion ratios of foaming agents of a same kind in China are normally 12 to 16 times. Time for bursting of half of the bubbles (a half-life period) generated by the foaming agent is as long as 20 to 80 min, while the half-life period of other current foaming agents in China is normally less than 30 min.
Description
Technical field
The present invention relates to a kind of earth pressure balanced shield, EPBS foaming agent.This earth pressure balanced shield, EPBS mainly as the soil improvement agent in earth pressure balanced shield, EPBS construction, especially can be applicable to powder fine sand stratum with foaming agent.Belong to shield tunnel project building material technical field.
Background technology
At present China is in the underground engineering construction great development such as subway period, and earth pressure balanced shield, EPBS engineering method driving tunnel has the advantage application such as safety, efficient, environmental protection because of it more and more extensive.But, because earth pressure balanced shield, EPBS is suitable for the restriction of formation condition, need to use the engineering characteristic of soil improvement agent improvement stratum soil, so that balancing earth-pressure shielding machine successfully driving of safety under poor strata condition.Foam is most advanced and the most effective soil improvement agent up to now.But the applied research of foaming agent is more advanced abroad, China is just at the early-stage in recent years to the application and research of foaming agent, and the performance of its foaming agent is generally all unstable, and half foam life period is shorter.
Summary of the invention
The object of the invention is to overcome existing earth pressure balanced shield, EPBS foaming agent poor stability, technical problem that rate of expansion is low, a kind of new and effective water-soluble earth pressure balanced shield, EPBS foaming agent is provided, and it is mainly as the soil improvement agent in earth pressure balanced shield, EPBS construction.Under normal temperature and pressure, earth pressure balanced shield, EPBS of the present invention reaches 30～90 times by the rate of expansion of foam, and domestic other similar foaming agent rate of expansion is generally at 12～16 times; Bubble-break half institute's used time (transformation period) reaches 20～80 minutes, and the transformation period of domestic existing other foaming agent is generally less than 30 minutes.
Earth pressure balanced shield, EPBS of the present invention comprises the several of straight-chain fatty alcohol vitriol, soap, sulfonated α-olefin, fatty alcohol polyoxyethylene ether sulfate by the main raw material component of foaming agent, and suds-stabilizing agent, foaming aids and water.Its biological degradability is good, and toxicological harmless is free from environmental pollution, and cost is less.
Specifically, earth pressure balanced shield, EPBS of the present invention is made up of following component by weight percentage with foaming agent:
Further, the weight percent of described feed composition:
Preferred, the weight percent of described feed composition:
Most preferred, the weight percent of described feed composition:
Described aliphatic alcohol sulfate refers to this type of sodium salt or the mixture of sodium salt and ammonium salt.Mainly refer to straight chain sodium lauryl sulphate or straight chain ammonium lauryl sulfate.Sodium lauryl sulphate is a kind of white powder, has special odor, can prepare the good shampoo of whipability.Ammonium lauryl sulfate is weak yellow liquid, has the performances such as decontamination, wetting, foaming, emulsification, readily biodegradable.Straight chain dodecyl sulfate can be composite with lauryl alcohol, adds after lauryl alcohol, due to the insertion of dodecane, on surface, the quantity of alkyl increases, and density increases, in addition, between two kinds of polar groups, also may form hydrogen bond, increase intermolecular effect, surperficial intensity is increased.
Described soap is the main component of soap, and it has very strong whipability, degradable.
Described sulfonated α-olefin refers to the mixture of linear alpha-olefin sodium sulfonate or linear alpha-olefin sodium sulfonate and linear alpha-olefin ammonium sulphonate, its whipability is strong, readily biodegradable, can reduce the surface tension of solution and the surface spreading modulus of air bubble liquid-membrane with lauryl alcohol is composite, reinforced foam stability, and the lauryl alcohol concentration adding is higher, the surface tension of solution reduces.
Described fatty alcohol polyoxyethylene ether sulfate refers to this type of sodium salt or the mixture of sodium salt and ammonium salt.Mainly refer to polyoxyethylenated alcohol sodium sulfate, under its normal temperature, be paste, whipability is good, can prepare the good shampoo of whipability and Cleaning preparations, readily biodegradable.
Described suds-stabilizing agent is amphoterics tertiary amino oxides dimethyl dodecyl amine oxide, silicone resin polyethers emulsion, water soluble nonionic surfactant fatty alcohol-polyoxyethylene ether, alkylol amide one of them or some persons' mixture wherein.Suds-stabilizing agent can improve the stability that forms foam.Silicone resin polyethers emulsion (affixture of silicone resin Soxylat A 25-7-silicone resin and oxyethane) can make surfactant molecule orderly distribution in air bubble liquid-membrane, give viscosity and the self-reparing capability of have good lather, thereby realize steady bubble effect, all effective to anionic (K12), polyoxyethylenated alcohol sodium sulfate (AES), alpha-olefin sodium sulfonate (AOS), can produce composite effect.
Described foaming aids refers to nonionic surfactant water-soluble fatty alcohol-polyoxyethylene ether, lauryl alcohol, gum arabic one of them or some persons' mixture wherein.
At normal temperatures, above-mentioned each component is mixed in proportion to dissolving, stirs and can compositely form earth pressure balanced shield, EPBS foaming agent of the present invention.
The foaming agent solution that the present invention prepares, after dilution and air mixed, is foamed by special frothing machine, can generate countless homogeneous, the pure white diameter with high rate of expansion, the high stability micro-bubble between 5～300 μ m.Not only expansion ratio is high, and the bubble hole producing little, be evenly distributed.Under normal temperature and pressure, after measured, the rate of expansion of foam reaches 30～90 times, and the bubble-break transformation period reaches 20～80 minutes.
The present invention is through a large amount of experiments, by the cooperation of each component, and find by experiment the best proportioning of each component, especially the application of soap and sulfonated α-olefin, make the present invention fill a prescription in the consistency of each material and cooperatively interacting property better, the formula that lacks these two kinds of materials also can be produced and be used, but compares with the product that adds these two kinds of materials, and it is larger that product performance differ.
Embodiment
The present invention is carried out to further detailed description below, provide several specific embodiments of the each feed composition composition of earth pressure balanced shield, EPBS of the present invention foaming agent.
Embodiment 1
The weight percent of each feed composition is:
Under normal temperature, each component is mixed in proportion dissolving, stir.The foam rate of expansion that this proportioning generates can reach 84～90 times, and half foam life period reaches 66～80 minutes.Its performance index are significantly better than domestic representative same type foaming agent, as according to the patent No. of China Mining Univ.'s application: the product that the method for being recorded in 200910223854 is produced.
Embodiment 2
The weight percent of each feed composition is:
Under normal temperature, each component is mixed in proportion dissolving, stir.The foam rate of expansion that this proportioning generates can reach 70～80 times because of outside temperature difference, and half foam life period reaches 50～70 minutes.
Embodiment 3
The weight percent of each feed composition is:
Under normal temperature, each component is mixed in proportion dissolving, stir.The foam rate of expansion that this proportioning generates can reach 30～45 times because of outside temperature difference, and half foam life period reaches 20～40 minutes.
Embodiment 4
The weight percent of each feed composition is:
Under normal temperature, each component is mixed in proportion dissolving, stir.The foam rate of expansion that this proportioning generates can reach 60～75 times because of outside temperature difference, and half foam life period reaches 44～60 minutes.
Embodiment 5
Under normal temperature, each component is mixed in proportion dissolving, stir.The foam rate of expansion that this proportioning generates can reach 35～48 times because of outside temperature difference, and half foam life period reaches 25～44 minutes.
Embodiment 6-12:
According to following each component and ratio formulated product, with embodiment 1:(, you supplement lower material again for all the other, and then I supplement embodiment form perfect)
Claims (7)
1. an earth pressure balanced shield, EPBS foaming agent, is characterized in that, its feed composition forms according to following weight percent:
2. earth pressure balanced shield, EPBS foaming agent according to claim 1, is characterized in that, also comprises following raw material components:
Soap 0～2%,
Sulfonated α-olefin 0～6%.
3. earth pressure balanced shield, EPBS foaming agent according to claim 2, is characterized in that: the weight percent of described feed composition:
4. earth pressure balanced shield, EPBS foaming agent according to claim 3, is characterized in that: the weight percent of described feed composition:
5. earth pressure balanced shield, EPBS foaming agent according to claim 4, is characterized in that: the weight percent of described feed composition:
6. according to the arbitrary described earth pressure balanced shield, EPBS foaming agent of claim 1-5, it is characterized in that: described aliphatic alcohol sulfate is the mixture of straight chain sodium lauryl sulphate or straight chain sodium lauryl sulphate and straight chain ammonium lauryl sulfate, and both proportional ranges are between 10:0.2～10:1; Described soap is the mixture of sodium soap or sodium soap and lipid acid ammonium, and in mixture, both proportional ranges are between 10:0.3～10:2; Described sulfonated α-olefin is the mixture of linear alpha-olefin sodium sulfonate or linear alpha-olefin sodium sulfonate and linear alpha-olefin ammonium sulphonate, and both proportional ranges are between 10:0.1～10:0.5; Described fatty alcohol polyoxyethylene ether sulfate is the mixture of polyoxyethylenated alcohol sodium sulfate or polyoxyethylenated alcohol sodium sulfate and AESA, both proportional ranges between 10:0.1～10:2, optimum in the time that both ratios are 10:0.2.
7. according to the arbitrary described earth pressure balanced shield, EPBS foaming agent of claim 1-5, it is characterized in that: described suds-stabilizing agent is amphoterics tertiary amino oxides dimethyl dodecyl amine oxide, silicone resin polyethers emulsion, water soluble nonionic surfactant fatty alcohol-polyoxyethylene ether, alkylol amide one of them or some persons' mixture wherein; Described foaming aids is lauryl alcohol, gum arabic, fatty alcohol-polyoxyethylene ether one of them or some persons' mixture wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310028006.5A CN103964726B (en) | 2013-01-24 | 2013-01-24 | Earth pressure balanced shield, EPBS foaming agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310028006.5A CN103964726B (en) | 2013-01-24 | 2013-01-24 | Earth pressure balanced shield, EPBS foaming agent |
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| CN103964726A true CN103964726A (en) | 2014-08-06 |
| CN103964726B CN103964726B (en) | 2016-02-17 |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198269A (en) * | 2015-09-01 | 2015-12-30 | 北京铁五院工程机械有限公司 | Foaming agent for low temperature-resistant soil pressure balance shield, and preparation method and application of foaming agent |
| CN105295933A (en) * | 2015-11-24 | 2016-02-03 | 上海三瑞高分子材料股份有限公司 | Soil modifier for earth pressure balance shield |
| CN105969368A (en) * | 2016-05-16 | 2016-09-28 | 四川恒泽建材有限公司 | Foaming agent for shield tunnelling machine and preparation method of foaming agent |
| CN106433679A (en) * | 2016-10-10 | 2017-02-22 | 中昊(大连)化工研究设计院有限公司 | Acid-resistant shield foaming agent |
| CN106630727A (en) * | 2015-11-02 | 2017-05-10 | 中昊(大连)化工研究设计院有限公司 | Alkali-resistance shielding foam agent |
| CN106753408A (en) * | 2016-12-27 | 2017-05-31 | 福建中科建科技有限公司 | A kind of novel shield foaming agent |
| CN107312545A (en) * | 2017-05-27 | 2017-11-03 | 中昊(大连)化工研究设计院有限公司 | A kind of shield foaming agent for producing high viscosity foam |
| CN107502358A (en) * | 2017-08-15 | 2017-12-22 | 合肥卓立雅工程材料科技有限公司 | A kind of special foaming agent of balancing earth-pressure shielding machine and preparation method thereof |
| CN107603629A (en) * | 2017-09-18 | 2018-01-19 | 广东省建筑科学研究院集团股份有限公司 | A kind of environment-friendly type shield foaming agent and preparation method thereof |
| CN108005670A (en) * | 2017-12-12 | 2018-05-08 | 北京交通大学 | A kind of shield cuts armored concrete clump of piles system |
| CN108070383A (en) * | 2017-12-22 | 2018-05-25 | 新乡市恒星科技有限责任公司 | A kind of foam stabilizing persistent form Soil pressure balance shield foam agent and preparation method thereof |
| CN108774535A (en) * | 2018-06-22 | 2018-11-09 | 湖北工程学院 | A kind of special foaming agent of shield machine and its preparation method and application |
| CN109054842A (en) * | 2018-08-01 | 2018-12-21 | 中铁四局集团有限公司 | A kind of earth pressure balanced shield, EPBS sediment improvement foaming agent and preparation method thereof |
| CN110157446A (en) * | 2019-05-13 | 2019-08-23 | 中铁第五勘察设计院集团有限公司 | A kind of dispersing agent and preparation method thereof for improveing clay |
| CN110935393A (en) * | 2019-12-12 | 2020-03-31 | 陕西速源节能科技有限公司 | Environment-friendly foam preparation and preparation method thereof |
| CN111926594A (en) * | 2020-08-21 | 2020-11-13 | 绍兴柯桥新都印染有限公司 | Rayon dyeing process |
| CN112342028A (en) * | 2020-10-28 | 2021-02-09 | 中铁建华南建设(广州)高科技产业有限公司 | Shield dispersing agent and preparation method and application thereof |
| CN114196411A (en) * | 2021-11-02 | 2022-03-18 | 山东山科生态环境研究院有限公司 | Environment-friendly shield foaming agent and preparation method and application thereof |
| CN115044378A (en) * | 2022-06-09 | 2022-09-13 | 中南大学 | Thickening type foaming agent suitable for water-rich sandy stratum and application thereof |
| CN116445164A (en) * | 2023-03-31 | 2023-07-18 | 中铁建华南建设(广州)高科技产业有限公司 | Foaming agent composition, foaming agent for shield, preparation method and application |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198269A (en) * | 2015-09-01 | 2015-12-30 | 北京铁五院工程机械有限公司 | Foaming agent for low temperature-resistant soil pressure balance shield, and preparation method and application of foaming agent |
| CN105198269B (en) * | 2015-09-01 | 2017-11-10 | 北京铁五院工程机械有限公司 | A kind of low temperature resistant earth pressure balanced shield, EPBS foaming agent and preparation method and application |
| CN106630727A (en) * | 2015-11-02 | 2017-05-10 | 中昊(大连)化工研究设计院有限公司 | Alkali-resistance shielding foam agent |
| CN106630727B (en) * | 2015-11-02 | 2019-01-04 | 中昊(大连)化工研究设计院有限公司 | Alkali resistance shield foaming agent |
| CN105295933A (en) * | 2015-11-24 | 2016-02-03 | 上海三瑞高分子材料股份有限公司 | Soil modifier for earth pressure balance shield |
| CN105969368A (en) * | 2016-05-16 | 2016-09-28 | 四川恒泽建材有限公司 | Foaming agent for shield tunnelling machine and preparation method of foaming agent |
| CN106433679A (en) * | 2016-10-10 | 2017-02-22 | 中昊(大连)化工研究设计院有限公司 | Acid-resistant shield foaming agent |
| CN106433679B (en) * | 2016-10-10 | 2019-07-09 | 中昊(大连)化工研究设计院有限公司 | Acid resistance shield foaming agent |
| CN106753408A (en) * | 2016-12-27 | 2017-05-31 | 福建中科建科技有限公司 | A kind of novel shield foaming agent |
| CN106753408B (en) * | 2016-12-27 | 2019-09-27 | 福建中科建科技有限公司 | A kind of shield foaming agent |
| CN107312545A (en) * | 2017-05-27 | 2017-11-03 | 中昊(大连)化工研究设计院有限公司 | A kind of shield foaming agent for producing high viscosity foam |
| CN107502358A (en) * | 2017-08-15 | 2017-12-22 | 合肥卓立雅工程材料科技有限公司 | A kind of special foaming agent of balancing earth-pressure shielding machine and preparation method thereof |
| CN107603629A (en) * | 2017-09-18 | 2018-01-19 | 广东省建筑科学研究院集团股份有限公司 | A kind of environment-friendly type shield foaming agent and preparation method thereof |
| CN108005670A (en) * | 2017-12-12 | 2018-05-08 | 北京交通大学 | A kind of shield cuts armored concrete clump of piles system |
| CN108070383A (en) * | 2017-12-22 | 2018-05-25 | 新乡市恒星科技有限责任公司 | A kind of foam stabilizing persistent form Soil pressure balance shield foam agent and preparation method thereof |
| CN108774535A (en) * | 2018-06-22 | 2018-11-09 | 湖北工程学院 | A kind of special foaming agent of shield machine and its preparation method and application |
| CN109054842A (en) * | 2018-08-01 | 2018-12-21 | 中铁四局集团有限公司 | A kind of earth pressure balanced shield, EPBS sediment improvement foaming agent and preparation method thereof |
| CN110157446A (en) * | 2019-05-13 | 2019-08-23 | 中铁第五勘察设计院集团有限公司 | A kind of dispersing agent and preparation method thereof for improveing clay |
| CN110935393A (en) * | 2019-12-12 | 2020-03-31 | 陕西速源节能科技有限公司 | Environment-friendly foam preparation and preparation method thereof |
| CN111926594A (en) * | 2020-08-21 | 2020-11-13 | 绍兴柯桥新都印染有限公司 | Rayon dyeing process |
| CN112342028A (en) * | 2020-10-28 | 2021-02-09 | 中铁建华南建设(广州)高科技产业有限公司 | Shield dispersing agent and preparation method and application thereof |
| CN114196411A (en) * | 2021-11-02 | 2022-03-18 | 山东山科生态环境研究院有限公司 | Environment-friendly shield foaming agent and preparation method and application thereof |
| CN114196411B (en) * | 2021-11-02 | 2023-10-20 | 山东山科生态环境研究院有限公司 | Environment-friendly shield foaming agent and preparation method and application thereof |
| CN115044378A (en) * | 2022-06-09 | 2022-09-13 | 中南大学 | Thickening type foaming agent suitable for water-rich sandy stratum and application thereof |
| CN115044378B (en) * | 2022-06-09 | 2023-04-21 | 中南大学 | Thickening foaming agent suitable for water-rich sandy stratum and application thereof |
| CN116445164A (en) * | 2023-03-31 | 2023-07-18 | 中铁建华南建设(广州)高科技产业有限公司 | Foaming agent composition, foaming agent for shield, preparation method and application |
| CN116445164B (en) * | 2023-03-31 | 2024-04-05 | 中铁建华南建设(广州)高科技产业有限公司 | Foaming agent composition, foaming agent for shield, preparation method and application |
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