CN105885867A - Residue soil improver for waterless gravel backfilled stratum shield driving construction - Google Patents
Residue soil improver for waterless gravel backfilled stratum shield driving construction Download PDFInfo
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- CN105885867A CN105885867A CN201610352916.2A CN201610352916A CN105885867A CN 105885867 A CN105885867 A CN 105885867A CN 201610352916 A CN201610352916 A CN 201610352916A CN 105885867 A CN105885867 A CN 105885867A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2103/00—Civil engineering use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2107/00—Impermeabilisation
Abstract
The invention discloses a residue soil improver for waterless gravel backfilled stratum shield driving construction. The improver is prepared from 0-6000 parts of sodium bentonite solution, 0-10 parts of clay dispersing agent, 0-10 parts of carboxymethyl cellulose and 20-130 parts of foaming agent. The soil regulated by the foaming agent has favorable flowability, plasticity and water permeation resistance, and the foaming agent has long duration on the soil improvement effect. The clay dispersing agent lowers the risks of blockage, delivery problem and the like, increases the driving speed of the shield machine, converts the high viscosity of the soil body into flowability and plasticity, and performs the function of improving the soil body. The carboxymethyl cellulose performs the gelation function, and prevents the residue soil from separation. Under the synergistic actions of the components, the improver increases the workability and flowability of the residue soil, so that the residue soil is in the plastic state, thereby stabilizing the pressure of the soil cabin and achieving the goals of controlling the slump of the tunnel face and the sinking of the ground surface and lubricating the tools.
Description
Technical field
The present invention relates to technical field of building construction, particularly to for anhydrous gravel backfill stratum Shield Construction Method Used
Sediment improvement agent.
Background technology
Xinjiang Urumqi stratum is many based on anhydrous Compact sandy-pebble, because economic development particularly construction project is to sand
Needs, there is substantial amounts of filter sand operation in early days, in the range of causing metro project construction, there is a large amount of gravel backfill stratum
Exist.Gravel backfill stratum creeping is poor, soil cabin pressure transient, and the soil pressure set can not be delivered to area smoothly
Face, easily backbreaks, and adds overlying strata self-stability poor, easily caves in around face, causes ground settlement to be difficult to control to；Backfill stratum
Frictional property is high, easily causes cutterhead and the high normal wear of cutter and destruction, serious speed of application and the efficiency of have impact on, additionally
In tunneling process, change cutter also bring extra risk.Currently, for the construction pick of anhydrous gravel backfill stratum shield
Enter, in terms of sediment improvement, there is no a corresponding match ratio, and stratum is very serious to the abrasion of cutter, cutterhead, face steady
Qualitative it is difficult to ensure that, usually cannot disappear because tool wear is excessive and cut the face soil body, cause shutting down the phenomenon such as tool changing and occur.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of slag for anhydrous gravel backfill stratum Shield Construction Method Used
Soil modifying agent, in conjunction with gravel backfill stratum characteristic use this modifying agent that dregs is improved, in order to increase dregs workability,
Mobility, stablizes soil cabin pressure, reaches to control face and caves in and ground settlement and the purpose of lubrication stage property.
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present invention, described modifying agent raw material is pressed
Weight portion includes following components:
Sodium bentonite solution 0～6000 parts, clay suspending agent 0～10 parts, carboxymethyl cellulose 0～10 parts, foam
20～130 parts；
Further, for the sediment improvement agent of anhydrous gravel backfill stratum Shield Construction Method Used, it is characterised in that change described in:
Good dose of raw material includes following components by weight:
Sodium bentonite solution 100～6000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam
Agent 20～130 parts；
Further, described modifying agent raw material includes following components by weight:
Sodium bentonite solution 1000～5000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam
Agent 20～130 parts；
Further, described modifying agent raw material includes following components by weight:
Sodium bentonite 4300 parts, clay suspending agent 8 parts, carboxymethyl cellulose 8 parts, foam solution 85 parts；
Further, described clay suspending agent is HHZ-B clay suspending agent, and in described sodium bentonite, bentonitic content is
55-86%；
Further, the density of described sodium bentonite is 1.08-1.1g/cm3, viscosity is 20-25mPa.s；
Further, described sodium bentonite was through the expanding treatment of more than 24 hours；
Further, described foam is Condat foam；
Further, the expansion ratio of described foam is 20-23 times；
Further, described foaming agent forms concentration through water dilution is the expanding foam solution of 3-5%.
Beneficial effects of the present invention: the sediment improvement for anhydrous gravel backfill stratum Shield Construction Method Used of the present invention
Agent, the soil after foam regulates has good mobility and plasticity and moisture penetration, meets shield-tunneling construction function
Requirement, the use of foam expands the soil scope that balancing earth-pressure shielding machine suitably excavates, and foam has the most steady
Qualitative, before mixing with the excavation soil body, it is unlikely to excess decay vanishes, long to the time of the lasts after soil improvement；Adopt
Reduce blocking, transportation problem equivalent risk with clay suspending agent, increase shield machine driving speed, make the high viscosity of the soil body become stream and mould
Property, playing the effect improving the soil body, bentonite has hygro-expansivity, hypo-osmoticity, high adsorption and good self-enclosed performance；
Use carboxymethyl cellulose to play the effect of gelling, prevent dregs generation segregation phenomenon；Synergism by above-mentioned each component
Increasing the workability of dregs, mobility, the mobility of dregs is all right, in mecystasis, and Simultaneous Stabilization soil cabin pressure, reach to control
Face caves in and ground settlement and the purpose of lubrication stage property, and conveying worm is slagged tap continuously and sprawls good on belt, opening
Behind storehouse, non-cutterhead is found to have mud cake phenomenon.
Detailed description of the invention
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight:
Sodium bentonite solution 0～6000 parts, clay suspending agent 0～10 parts, carboxymethyl cellulose 0～10 parts, foam
20～130 parts；Sodium bentonite has hygro-expansivity, hypo-osmoticity, high adsorption and good self-enclosed performance；Adjust through foam
Soil after joint has good mobility and plasticity and moisture penetration, and the use of foam expands earth pressure balanced shield, EPBS
The soil scope that machine suitably excavates, and foam has good stability, was unlikely to excess and declined before mixing with the excavation soil body
Become and vanish, long to the time of the lasts after soil improvement；Clay suspending agent reduces blocking, transportation problem equivalent risk, increases
Shield machine driving speed, makes the high viscosity of the soil body become stream plasticity, makes the soil body improve；Carboxymethyl cellulose plays the work of gelling
With, prevent dregs generation segregation phenomenon；The match ratio of above-mentioned each component ensures the synergism of each component, makes whole structure more
Good, the frothing percentage of foaming agent is high, and expansion ratio is more than 20 times, and the foamed state of bubble is good, and the half-life of the bubble of generation is 7
More than minute.According to the character of dregs, sodium bentonite solution, clay suspending agent, carboxymethyl cellulose can be selected and group
Close application.
In the present embodiment, described modifying agent raw material includes following components by weight:
Sodium bentonite solution 100～6000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam
Agent 20～130 parts.
In the present embodiment, described modifying agent raw material includes following components by weight:
Sodium bentonite solution 1000～5000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam
Agent 20～130 parts.
In the present embodiment, described modifying agent raw material includes following components by weight:
Sodium bentonite 4300 parts, clay suspending agent 8 parts, carboxymethyl cellulose 8 parts, foam solution 85 parts；This match ratio
Under the performance of sediment improvement agent optimal.
In the present embodiment, described clay suspending agent is HHZ-B clay suspending agent, bentonitic in described sodium bentonite contains
Amount is 55-86%.
In the present embodiment, the density of described sodium bentonite is 1.08-1.1g/cm3, viscosity is 20-25mPa.s；Its
There is the most weak key in the unit crystal layer of grain, the radius of sodium ion own is little, and ioni valence is low, and water easily enters between unit crystal layer,
Causing lattice dilatation, the volumetric expansion of granule is 10～40 times of original particle volume, is formed the most fluid-tight anti-after water suction
Infiltration layer.If again through one period of long period, then bentonite clay particle can become cream smectic, and infiltration coefficient can drop to 1 × 10-7m/s
Hereinafter, the most permeable；The bentonitic size that main difference is that its soil body inter-granular porosity of different compacted densities, when close
When spending big, the soil body granule in unit space and the volume shared by adsorbed water layer are the biggest, and seepage flow fluid passage is the narrowest.Due to swelling
The highly hygroscopic dilatancy of soil and self-enclosed property, extreme expansion when meeting water, its density is the biggest, and expansion multiple is the biggest, same seepage flow
The passage that flowing liquid was left in space for is the narrowest, and its seepage coefficient the most just reduces.
In the present embodiment, described sodium bentonite was through the expanding treatment of more than 24 hours.
In the present embodiment, described foam is Condat (Condar is special) foam.
In the present embodiment, the expansion ratio of described foam is 20-23 times.
In the present embodiment, it is the expanding foam solution of 3-5% that described foaming agent forms concentration through water dilution.
In the present embodiment, bentonitic pH value is 7.5-10；The pH value of foaming agent is 7.3-8.0, and viscosity is 0.003-
0.2Pas；
In the present embodiment, also can add 0.1-1 part
0.1-1 part0.1-1 part 2,4,7,9-tetramethyl-5-last of the ten Heavenly stems
Alkynes-4, one or more mixture in 7-glycol, 0.1-1 part polyacrylamide, 0.1-1 part low-carbon alcohols, strengthen absorption
Kinetics, increasing foam intermolecular arrangement compactness, to increase the stability of institute's generation foam, it is possible to addition 1-5 part
Chelating agen, has good compatibility with other components, improves the salt tolerance of whole mixed system and hard water resistance property, strengthens in solution
The adhesion of each component, described chelating agen can be 1-hydroxy ethylidene-1,1-diphosphonic acid salt, EDTA, N acids.
In the present embodiment, described foam may is that sodium lauryl sulphate powdery, polyoxyethylenated alcohol sodium sulfate
One or both mixture in liquid, α-sodium olefin sulfonate powdery, modified silicone resin polyethers emulsion.
Below by specific embodiment, the present invention is further elaborated.
Embodiment one
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: sodium bentonite solution 4200 parts, clay suspending agent 6 parts, carboxymethyl cellulose 7 parts, foam
Agent 70 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 55%；The density of described sodium bentonite is
1.08g/cm3, viscosity is 20mPa.s；Described sodium bentonite was through the expanding treatment of 25 hours；The expansion ratio of described foam
It it is 20 times；It is the expanding foam solution of 3% that described foaming agent forms concentration through water dilution.
Embodiment two
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: sodium bentonite solution 3500 parts, carboxymethyl cellulose 3 parts, foam 71 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 86%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 25mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 23 times；It is the expanding foam solution of 5% that described foaming agent forms concentration through water dilution.
Embodiment three
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: sodium bentonite solution 6000 parts, clay suspending agent 4 parts, carboxymethyl cellulose 5 parts, foam
Agent 80 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 65%；The density of described sodium bentonite is
1.08-1.1g/cm3, viscosity is 23mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；Described foam
Expansion ratio is 22 times；It is the expanding foam solution of 4% that described foaming agent forms concentration through water dilution.
Embodiment four
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: sodium bentonite solution 2500 parts, clay suspending agent 6 parts, carboxymethyl cellulose 3 parts, foam
Agent 53 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 86%；The density of described sodium bentonite is
1.08g/cm3, viscosity is 25mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 20 times；It is the expanding foam solution of 3% that described foaming agent forms concentration through water dilution.
Embodiment five
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: sodium bentonite solution 3000 parts, clay suspending agent 6 parts, foam 38 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 86%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 20mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 23 times；It is the expanding foam solution of 3% that described foaming agent forms concentration through water dilution.
Embodiment six
The sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used of the present embodiment, described modifying agent raw material
Include following components by weight: clay suspending agent 5 parts, carboxymethyl cellulose 3 parts, foam 120 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 70%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 21mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 21 times；It is the expanding foam solution of 4% that described foaming agent forms concentration through water dilution.
Embodiment seven
Described modifying agent raw material includes following components by weight:
Sodium bentonite solution 6000 parts, clay suspending agent 10 parts, carboxymethyl cellulose 10 parts, foam 130 parts.
In the present embodiment, in described sodium bentonite, bentonitic content is 80%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 24mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 22 times；It is the expanding foam solution of 5% that described foaming agent forms concentration through water dilution.
Embodiment eight
Described modifying agent raw material includes following components by weight:
Sodium bentonite solution 100 parts, clay suspending agent 1 part, carboxymethyl cellulose 1 part, foam 20 parts, 0.1 part 2,
4,7,9-tetramethyl-5-decine-4,7-glycol, 0.1 part of polyacrylamide, 1 part of low-carbon alcohols.
In the present embodiment, in described sodium bentonite, bentonitic content is 60%；The density of described sodium bentonite is
1.08g/cm3, viscosity is 21mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 20 times；It is the expanding foam solution of 5% that described foaming agent forms concentration through water dilution.
Embodiment nine
Described modifying agent raw material includes following components by weight:
Sodium bentonite solution 6000 parts, clay suspending agent 5 parts, carboxymethyl cellulose 5 parts, foam 80 parts, 1 part 2,4,
7,9-tetramethyl-5-decine-4,7-glycol, 1 part of polyacrylamide, 1 part of low-carbon alcohols.
In the present embodiment, in described sodium bentonite, bentonitic content is 70%；The density of described sodium bentonite is
1.08g/cm3, viscosity is 25mPa.s；Described sodium bentonite was through the expanding treatment of more than 24 hours；The foaming of described foam
Multiplying power is 20 times；It is the expanding foam solution of 5% that described foaming agent forms concentration through water dilution.
Embodiment ten
Described modifying agent raw material includes following components by weight:
Sodium bentonite solution 1000 parts, clay suspending agent 10 parts, carboxymethyl cellulose 1 part, foam 20 parts, 5 parts
Chelating agen, 1 part
In the present embodiment, in described sodium bentonite, bentonitic content is 75%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 20mPa.s；Described sodium bentonite was through the expanding treatment of 24 hours；The expansion ratio of described foam
It it is 22 times；It is the expanding foam solution of 4% that described foaming agent forms concentration through water dilution.
Embodiment 11
Described modifying agent raw material includes following components by weight:
Sodium bentonite solution 5000 parts, clay suspending agent 10 parts, carboxymethyl cellulose 1 part, foam 20 parts, 5 parts
Chelating agen, 0.1 part
In the present embodiment, in described sodium bentonite, bentonitic content is 86%；The density of described sodium bentonite is
1.1g/cm3, viscosity is 20mPa.s；Described sodium bentonite was through the expanding treatment of 26 hours；The expansion ratio of described foam
It it is 22 times；It is the expanding foam solution of 3% that described foaming agent forms concentration through water dilution.
Finally illustrating, above example is only in order to illustrate technical scheme and unrestricted, although with reference to relatively
The present invention has been described in detail by good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from objective and the scope of technical solution of the present invention, it all should be contained at this
In the middle of the right of invention.
Claims (10)
1. the sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used, it is characterised in that: described modifying agent
Raw material includes following components by weight:
Sodium bentonite solution 0～6000 parts, clay suspending agent 0～10 parts, carboxymethyl cellulose 0～10 parts, foam 20～
130 parts.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 1, its feature
It is: described modifying agent raw material includes following components by weight:
Sodium bentonite solution 100～6000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam 20
～130 parts.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 2, its feature
It is: described modifying agent raw material includes following components by weight:
Sodium bentonite solution 1000～5000 parts, clay suspending agent 1～10 parts, carboxymethyl cellulose 1～10 parts, foam 20
～130 parts.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 3, its feature
It is: described modifying agent raw material includes following components by weight:
Sodium bentonite solution 4300 parts, clay suspending agent 8 parts, carboxymethyl cellulose 8 parts, foam solution 85 parts.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 1, its feature
Being: described clay suspending agent is HHZ-B type clay suspending agent, in described sodium bentonite, bentonitic content is 55-86%.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 5, its feature
It is: the density of described sodium bentonite is 1.08-1.1g/cm3, viscosity is 20-25mPa.s.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 6, its feature
It is: described sodium bentonite was through the expanding treatment of more than 24 hours.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 7, its feature
It is: described foam is Condat foam.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 8, its feature
It is: the expansion ratio of described foam is 20-23 times.
Sediment improvement agent for anhydrous gravel backfill stratum Shield Construction Method Used the most according to claim 9, its feature
It is: it is the expanding foam solution of 3-6% that described foaming agent forms concentration through water dilution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610352916.2A CN105885867A (en) | 2016-05-25 | 2016-05-25 | Residue soil improver for waterless gravel backfilled stratum shield driving construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610352916.2A CN105885867A (en) | 2016-05-25 | 2016-05-25 | Residue soil improver for waterless gravel backfilled stratum shield driving construction |
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| CN201610352916.2A Pending CN105885867A (en) | 2016-05-25 | 2016-05-25 | Residue soil improver for waterless gravel backfilled stratum shield driving construction |
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Cited By (5)
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| CN109439297A (en) * | 2018-12-03 | 2019-03-08 | 河海大学 | A kind of bubble slurrying method good for the land reform of earth pressure balanced shield, EPBS cabin |
| CN109628073A (en) * | 2018-12-06 | 2019-04-16 | 南京军盾化工科技有限公司 | Clay dispersion agent and preparation method thereof |
| CN109749748A (en) * | 2018-12-20 | 2019-05-14 | 中铁开发投资集团有限公司 | A kind of rich water round gravel stratum shield sediment improvement method and sediment improvement agent |
| 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 |
| CN113637485A (en) * | 2021-09-03 | 2021-11-12 | 宁波交通工程建设集团有限公司 | Polymer liquid soil curing agent and production equipment thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439297A (en) * | 2018-12-03 | 2019-03-08 | 河海大学 | A kind of bubble slurrying method good for the land reform of earth pressure balanced shield, EPBS cabin |
| CN109628073A (en) * | 2018-12-06 | 2019-04-16 | 南京军盾化工科技有限公司 | Clay dispersion agent and preparation method thereof |
| CN109749748A (en) * | 2018-12-20 | 2019-05-14 | 中铁开发投资集团有限公司 | A kind of rich water round gravel stratum shield sediment improvement method and sediment improvement agent |
| 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 |
| CN113637485A (en) * | 2021-09-03 | 2021-11-12 | 宁波交通工程建设集团有限公司 | Polymer liquid soil curing agent and production equipment thereof |
| CN113637485B (en) * | 2021-09-03 | 2024-02-06 | 宁波交通工程建设集团有限公司 | Polymer liquid soil curing agent and production equipment thereof |
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Application publication date: 20160824 |
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