CN110066661A - A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method and its configuration method - Google Patents
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method and its configuration method Download PDFInfo
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- CN110066661A CN110066661A CN201910328000.7A CN201910328000A CN110066661A CN 110066661 A CN110066661 A CN 110066661A CN 201910328000 A CN201910328000 A CN 201910328000A CN 110066661 A CN110066661 A CN 110066661A
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- 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
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Abstract
The present invention relates to the realm of building construction, provide a kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method, the raw material including following parts by weight: 1000 parts of water, 75-85 parts of bentonite, 3-5 parts of soda ash, 0.5-1.5 parts of Sodium Polyacrylate.The present invention also provides a kind of configuration methods of above-mentioned round gravel stratum deep big foundation pit diaphram wall slurry coat method.The present invention has the advantages that the present invention substitutes traditional CMC using Sodium Polyacrylate, slurries retaining wall performance and serum recycle reuse ratio will be greatly improved, meanwhile, corresponding environmental pollution and material consumption are reduced；Meanwhile the indices for the mud prepared according to inventive formulation can satisfy the requirement of circulating mud index, retaining wall effect is good, and slurry trench stability is good.
Description
Technical field
The present invention relates to the realm of building construction more particularly to a kind of round gravel stratum deep big foundation pit diaphram wall slurry coat methods
And its configuration method.
Background technique
Diaphram wall has many advantages, such as that technical maturity, rigidity are big, good integrity, water-stagnating effect are good, has become in recent years
Widely used building enclosure form in each foundation pit construction.In continuous wall trench underground work progress, slurry coat method meeting
Flute wall surfaces are deposited on, mudcake are formed, so that cell wall is protected.Meanwhile in slot the Water And Earth Pressures of mud and soil layer formed it is flat
Weighing apparatus, cell wall keep stabilization not collapse.
For deep big foundation pit diaphram wall, grooving detection, decentralization reinforcing bar are also carried out due to big at groove depth, after grooving
The processes such as cage, installation perfusion conduit, cause mud time of repose after grooving longer.Therefore, the quality of mud property is by direct shadow
Ring the construction quality of diaphram wall.
Currently, majority is that CMC (sodium carboxymethylcellulose) is made tackifier for applying more universal Conventional mud,
The index of such Conventional mud be far from satisfying " deep big foundation pit diaphram wall " retaining wall requirement, easily occur cell wall shrinkage cavity or
Cell wall partial collapse, easily there is folder mud in wall seam crossing, burning into sand leads to the common quality defects such as leak.In addition, in similar round gravel stratum
Equal self-stabilities are poor, in the strong class stratum of water penetration, and the indexs such as specific gravity, pH value, viscosity of Conventional mud stability is also easily by ground
It is lauched influence, will be unable to the stability that cell wall is effectively ensured in deep big foundation pit continuous wall trench underground work progress.Meanwhile it passing
The system mud problem high there is also waste pulp rate, is unfavorable for environmental protection.
Accordingly, it is badly in need of that a kind of retaining wall performance is good, grooving quality is good, serum recycle reuse ratio is high and environmentally protective at present
Round gravel stratum deep big foundation pit diaphram wall slurry coat method and its configuration method.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of retaining wall performance is good, grooving quality is good, serum recycle again
Utilization rate is high, and environmentally protective round gravel stratum deep big foundation pit diaphram wall slurry coat method and its configuration method.
The present invention solves above-mentioned technical problem using following technical scheme:
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method, the raw material including following parts by weight: water 1000
Part, 75-85 parts of bentonite, 3-5 parts of soda ash, 0.5-1.5 parts of Sodium Polyacrylate.
As one of preferred embodiment of the invention, the raw material including following parts by weight: 1000 parts of water, 80 parts of bentonite,
4 parts of soda ash, 1 part of Sodium Polyacrylate.
As one of preferred embodiment of the invention, the raw material including following parts by weight: 1000 parts of water, 78 parts of bentonite,
3.5 parts of soda ash, 0.8 part of Sodium Polyacrylate.
As one of preferred embodiment of the invention, the raw material including following parts by weight: 1000 parts of water, 83 parts of bentonite,
4.5 parts of soda ash, 1.2 parts of Sodium Polyacrylate.
As one of preferred embodiment of the invention, the raw water be derive specifically from drilling well extraction underground water, pH 6-7,
It is used after detection is qualified.
As one of preferred embodiment of the invention, the soda ash specifically uses calcined soda for industry, after being mixed with raw water, pH
8-10。
As one of preferred embodiment of the invention, the Sodium Polyacrylate specifically uses food-grade polypropylene acid sodium, is used as
Tackifier.
A kind of preparation method of round gravel stratum deep big foundation pit diaphram wall slurry coat method, comprises the following specific steps that:
(1) each raw material is weighed according to above-mentioned parts by weight；
(2) stock tank is mixed into the water injection of corresponding parts by weight, and opens blender and stirs water；
(3) first bentonite is poured into and mixes stock tank, then amount of caustic soda cup is sprinkled into and mixes stock tank, finally by Sodium Polyacrylate dosage
Cup, which is sprinkled into, mixes stock tank；
(4) after spreading, 5-8min is mixed；It opens to bentonite is fully dispersed, mixture is pumped into new stock tank；
(4) after 20-28h, the abundant hydration swelling of bentonite clay particle, mud needed for target is made.
As one of preferred embodiment of the invention, after the mud needed for target is made, also need to carry out performance indicator survey to it
Fixed, detecting qualified rear can be used.
As one of preferred embodiment of the invention, it is particularly applicable to round gravel stratum > 70m for the mud deeply, the ground of 1.5m thickness
Lower diaphragm wall.
Each raw material effect:
Water: pulp-water source is mixed at scene can be used the underground water of drilling well extraction；Underground water is mixed slurry and is used after detection is qualified.
Bentonite: bentonite is used to improve plastic viscosity, gel strength and the yield value of mud system, makes mud on cell wall
The mudcake of one layer of sake densification is formed, so that Reinforcing hole wall, prevents rock stratum from collapsing；Performance meets the requirements bentonite after testing
Afterwards, it can use；
Soda ash: soda ash makees dispersing agent in slurrying；Since the pH value of water is generally between 6-7, but mixes slurry and require pH
Value is between 8-10, so needing calcined soda for industry to adjust the pH value of water between 8-10.
Sodium Polyacrylate: Sodium Polyacrylate is a kind of new functional macromolecule material, and solid product is that white is (or pale yellow
Color) blocky or powder, tackifier substitution CMC use can be done after mud is added.
The present invention compared with prior art the advantages of be:
The main component of mud of the present invention includes water, bentonite, soda ash and Sodium Polyacrylate, wherein Sodium Polyacrylate is made
For tackifier；The present invention uses Sodium Polyacrylate to substitute traditional CMC, and slurries retaining wall performance and serum recycle reuse ratio will
It greatly improves, meanwhile, corresponding environmental pollution and material consumption will be reduced；Meanwhile it preparing to obtain according to inventive formulation
The indices of mud can satisfy the requirement of circulating mud index, the not up to index of discarded slurry, mud off effect
Fruit is preferable, and slurry trench stability is good.
In conclusion being made in round gravel stratum deep big foundation pit continuous wall trench underground work progress using Sodium Polyacrylate
Tackifier can be effectively improved mud property, substantially reduce waste pulp rate, have good retaining wall in similar construction of diaphragm wall
Performance and environmental protection effect.
Detailed description of the invention
Fig. 1 is the flow chart of round gravel stratum deep big foundation pit diaphram wall slurry coat method configuration method in embodiment 6.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method of the present embodiment, the original including following parts by weight
Material: 1000 parts of water, 75 parts of bentonite, 3 parts of soda ash, 0.5 part of Sodium Polyacrylate.
Wherein, raw water derives from the underground water that drilling well is extracted, and pH 6 is used after detection is qualified；Soda ash uses technical pure
Alkali, after being mixed with raw water, pH 8；Sodium Polyacrylate uses food-grade polypropylene acid sodium, is used as tackifier.
Embodiment 2
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method of the present embodiment, the original including following parts by weight
Material: 1000 parts of water, 85 parts of bentonite, 5 parts of soda ash, 1.5 parts of Sodium Polyacrylate.
Wherein, raw water derives from the underground water that drilling well is extracted, and pH 7 is used after detection is qualified；Soda ash uses technical pure
Alkali, after being mixed with raw water, pH 10；Sodium Polyacrylate uses food-grade polypropylene acid sodium, is used as tackifier.
Embodiment 3
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method of the present embodiment, the original including following parts by weight
Material: 1000 parts of water, 80 parts of bentonite, 4 parts of soda ash, 1 part of Sodium Polyacrylate.
Wherein, raw water derives from the underground water that drilling well is extracted, and pH 6.5 is used after detection is qualified；Soda ash is using industry
Soda ash, after being mixed with raw water, pH 9；Sodium Polyacrylate uses food-grade polypropylene acid sodium, is used as tackifier.
Embodiment 4
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method of the present embodiment, the original including following parts by weight
Material: 1000 parts of water, 78 parts of bentonite, 3.5 parts of soda ash, 0.8 part of Sodium Polyacrylate.
Wherein, raw water derives from the underground water that drilling well is extracted, and pH 6.2 is used after detection is qualified；Soda ash is using industry
Soda ash, after being mixed with raw water, pH 8.5；Sodium Polyacrylate uses food-grade polypropylene acid sodium, is used as tackifier.
Embodiment 5
A kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method of the present embodiment, the original including following parts by weight
Material: 1000 parts of water, 83 parts of bentonite, 4.5 parts of soda ash, 1.2 parts of Sodium Polyacrylate.
Wherein, raw water derives from the underground water that drilling well is extracted, and pH 6.8 is used after detection is qualified；Soda ash is using industry
Soda ash, after being mixed with raw water, pH 9.5；Sodium Polyacrylate uses food-grade polypropylene acid sodium, is used as tackifier.
Embodiment 6
The preparation of round gravel stratum deep big foundation pit diaphram wall slurry coat method in a kind of above-described embodiment 1-5 of the present embodiment
Method, as shown in Figure 1, comprising the following specific steps that:
(1) each raw material is weighed according to above-mentioned parts by weight；
(2) stock tank is mixed into the water injection of corresponding parts by weight, and opens blender and stirs water；
(3) first bentonite is poured into and mixes stock tank, then amount of caustic soda cup is sprinkled into and mixes stock tank, finally by Sodium Polyacrylate dosage
Cup, which is sprinkled into, mixes stock tank；
(4) after spreading, 5-8min is mixed；It opens to bentonite is fully dispersed, mixture is pumped into new stock tank；
(4) after 20-28h, the abundant hydration swelling of bentonite clay particle, mud needed for target is made；
(5) after mud needed for target being made, performance index determining is carried out to it, is used after detection is qualified.
The main component of above-described embodiment mud includes water, bentonite, soda ash and Sodium Polyacrylate, and it is particularly applicable to circles
Gravel stratum > 70m is deep, 1.5m thickness diaphram wall；It uses Sodium Polyacrylate to substitute traditional CMC, slurries retaining wall performance and
Serum recycle reuse ratio will greatly improve, meanwhile, corresponding environmental pollution and material consumption will be reduced；Meanwhile according to
The indices for the mud that above-described embodiment formula is prepared can satisfy the requirement of circulating mud index, retaining wall effect
Good, slurry trench stability is good.
No. 4 line engineerings of rail traffic in Kunming, the slurrying technique have obtained construction unit, designing unit and management
The approval of unit, is promoted energetically.Carry out using in the construction of Kunming train northern station ultra-deep super thick ground-connecting-wall.In work progress
It inspects 5 width walls by random samples and carries out entity detection, qualification rate 100%.It greatly improves mud simultaneously to construct filthy confusion, workshop formula
Production management shows good project image.
Embodiment 7
The present embodiment is to illustrate the comprehensive of round gravel stratum deep big foundation pit diaphram wall slurry coat method in above-described embodiment 1-5
Close performance:
The performance comparison of each slurry coat method is as shown in table 1, using viscosity, specific gravity, filter loss and mud film thickness as evaluation
Index；Under Comprehensive Correlation, it can be found that the mud property in embodiment 3 is best, it is optimal proportion.
The comprehensive performance contrast table of mud in 1 embodiment 1-5 of table
| Mud sample | Viscosity (S) | Specific gravity | Filter loss (mL) | Mud film thickness (mm) |
| Embodiment 1 | 20 | 1.03 | 14 | 3 |
| Embodiment 2 | 21 | 1.13 | 14 | 3 |
| Embodiment 3 | 25 | 1.10 | 12 | 2 |
| Embodiment 4 | 23 | 1.04 | 13 | 2 |
| Embodiment 5 | 24 | 1.11 | 13 | 3 |
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of round gravel stratum deep big foundation pit diaphram wall slurry coat method, which is characterized in that the original including following parts by weight
Material: 1000 parts of water, 75-85 parts of bentonite, 3-5 parts of soda ash, 0.5-1.5 parts of Sodium Polyacrylate.
2. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1, which is characterized in that including such as
The raw material of lower parts by weight: 1000 parts of water, 80 parts of bentonite, 4 parts of soda ash, 1 part of Sodium Polyacrylate.
3. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1, which is characterized in that including such as
The raw material of lower parts by weight: 1000 parts of water, 78 parts of bentonite, 3.5 parts of soda ash, 0.8 part of Sodium Polyacrylate.
4. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1, which is characterized in that including such as
The raw material of lower parts by weight: 1000 parts of water, 83 parts of bentonite, 4.5 parts of soda ash, 1.2 parts of Sodium Polyacrylate.
5. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1 to 4, which is characterized in that
The raw water is derive specifically from the underground water of drilling well extraction, pH6-7.
6. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1 to 4, which is characterized in that
The soda ash specifically uses calcined soda for industry, after being mixed with raw water, pH8-10.
7. round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 1 to 4, which is characterized in that
The Sodium Polyacrylate specifically uses food-grade polypropylene acid sodium, is used as tackifier.
8. a kind of preparation side of round gravel stratum deep big foundation pit diaphram wall slurry coat method as claimed in claim 1
Method, which is characterized in that comprise the following specific steps that:
(1) each raw material is weighed according to above-mentioned parts by weight；
(2) stock tank is mixed into the water injection of corresponding parts by weight, and opens blender and stirs water；
(3) first bentonite is poured into and mixes stock tank, then amount of caustic soda cup is sprinkled into and mixes stock tank, finally spread Sodium Polyacrylate with measuring cup
Enter to mix stock tank；
(4) after spreading, 5-8min is mixed；It opens to bentonite is fully dispersed, mixture is pumped into new stock tank；
(4) after 20-28h, the abundant hydration swelling of bentonite clay particle, mud needed for target is made.
9. the preparation method of round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 8, feature
It is, after the mud needed for target is made, also needs to carry out it performance index determining, detecting qualified rear can be used.
10. the preparation method of round gravel stratum deep big foundation pit diaphram wall slurry coat method according to claim 8, feature
It is, it is particularly applicable to round gravel stratum > 70m for the mud deeply, the diaphram wall of 1.5m thickness.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111732373A (en) * | 2020-05-28 | 2020-10-02 | 浙江土工岩土科技有限公司 | Slurry for sand drift stratum underground continuous wall |
| CN114790092A (en) * | 2022-05-30 | 2022-07-26 | 广东电白二建集团有限公司 | Method for preparing slurry of slurry retaining wall type cast-in-situ bored pile |
| CN116445140A (en) * | 2023-02-22 | 2023-07-18 | 北京金河水务建设集团有限公司 | Long-distance pipe jacking drag reduction slurry and preparation method and application thereof |
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| CN114790092A (en) * | 2022-05-30 | 2022-07-26 | 广东电白二建集团有限公司 | Method for preparing slurry of slurry retaining wall type cast-in-situ bored pile |
| CN116445140A (en) * | 2023-02-22 | 2023-07-18 | 北京金河水务建设集团有限公司 | Long-distance pipe jacking drag reduction slurry and preparation method and application thereof |
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