CN110194577A - A kind of shield slurry curing agent and its preparation method and application method - Google Patents
A kind of shield slurry curing agent and its preparation method and application method Download PDFInfo
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- CN110194577A CN110194577A CN201910395789.8A CN201910395789A CN110194577A CN 110194577 A CN110194577 A CN 110194577A CN 201910395789 A CN201910395789 A CN 201910395789A CN 110194577 A CN110194577 A CN 110194577A
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- Prior art keywords
- shield slurry
- curing agent
- shield
- sepiolite
- slurry curing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of shield slurry curing agent, the component including following parts by weight: 10~20 parts of calcium oxide, 3~8 parts of white carbon black, 0.3~1.2 part of cellulose and load have 7~15 parts of sepiolite of molysite.Shield slurry curing agent provided by the invention is made of calcium oxide, white carbon black, cellulose and load the sepiolite of molysite, and it is optimized by the quality proportioning to each component, each component is set to act synergistically, so as to so that shield slurry occur quickly, high-efficiency dehydration solidification, significantly improve the solidification effect of shield slurry；Carrier by using sepiolite as molysite makes shield slurry curing agent while having flocculation and cured effect, significantly enhances the curing process effect to shield slurry；The invention also discloses a kind of preparation method and application methods of shield slurry curing agent.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of shield slurry curing agent and preparation method thereof and answer
Use method.
Background technique
With the continuous development of China railways, highway, water conservancy, urban track traffic etc., Tunnel Engineering quantity therein
Gradually increase.As the main construction method of Tunnel Engineering, shield method is applied to each engineering neck in China more and more
In the construction of domain, especially extra-large shield-driven tunnel is constructed.When the extra-large shield-driven tunnel construction of high depth, mud is generally used
Balanced type shield method, i.e. the shield tunneling face soil body by mud hydraulic pressure in excavation face Water And Earth Pressures play balanced action with
Soil stabilization is kept, plays the role of cooling and lubricating cutter head, carries spoil, reduces support pressure.
Slurry shield balance system can generate a large amount of discarded slurry, and discarded slurry is mechanical by pumping, precipitating and muddy water
After processing, the recovered liquid for isolating suitable relative density is reused, remaining is abandoned slurry and generallys use water transport and road transport two
Kind method carries out outward transport and abandons.The slurry-outlet quantity of slurry shield is generally 2~3 times of digging volume, therefore along with shield-tunneling construction
A large amount of discarded slurry can be generated.The discarded main processing method of shield slurry is exactly to fill, but discard shield slurry one at present
As moisture content it is higher, it is difficult to stack, scene sunning land occupation resource, and transport outward difficult, cause serious pollution to the environment.In addition, discarded
The special flocculation structure of shield slurry particle and highly hydrophilic, make it includes moisture be difficult to be removed, according to dehydration work
Not only low efficiency, cost are also relatively high for skill.Discarded shield slurry volume is big, and subsequent processing is more difficult, if but without dealing carefully with,
The ecological environment of surrounding will be jeopardized.
Therefore, a kind of curing agent that dehydrating and curing can be carried out to shield slurry, subsequent place cured to shield slurry are developed
Reason and environmental protection are most important.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, propose that a kind of shield slurry curing agent, the shield slurry are solid
Agent can effectively facilitate the fast dewatering solidification of shield slurry, and good to the solidification effect of mud；Second aspect of the present invention
Purpose is, provides a kind of preparation method of shield slurry curing agent；The purpose of third aspect present invention is, provides a kind of shield
The application method of structure mud curing agent.
To reach above-mentioned technical purpose, technical solution of the present invention provides a kind of shield slurry curing agent, including weighs as follows
Measure the component of part: 10~20 parts of calcium oxide, 3~8 parts of white carbon black, 0.3~1.2 part of cellulose and load have the sepiolite 7 of molysite
~15 parts.
Technical solution of the present invention also provides a kind of preparation method of shield slurry curing agent, includes the following steps:
S1, it stocks up by weight；
S2, calcium oxide, white carbon black and cellulose are uniformly mixed, obtain the first mixture；Load is had to the Hai Pao of molysite
Stone is uniformly mixed with first mixture, obtains finished product.
Technical solution of the present invention also provides a kind of application method of shield slurry curing agent, and the shield slurry is solidified
Agent is added in shield slurry, is sufficiently mixed, and after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry after bleeding
It is cured, wherein the additional amount of the shield slurry curing agent is the 1.2~1.8% of shield slurry dry pulp weight.
Compared with prior art, the beneficial effect comprise that
1, shield slurry curing agent provided by the invention is had the Hai Pao of molysite by calcium oxide, white carbon black, cellulose and load
Stone composition, and optimized by the quality proportioning to each component, so that each component is acted synergistically, so as to so that shield mud
Quick, high-efficiency dehydration solidification occurs for slurry, significantly improves the solidification effect of shield slurry；
2, the carrier in the present invention by using sepiolite as molysite, makes shield slurry curing agent while having flocculation
With cured effect, the curing process effect to shield slurry is significantly enhanced；
3, the preparation method of shield slurry curing agent provided by the invention is simple, it is easy to accomplish.
4, the shield slurry curing agent in the present invention is applied in shield slurry, solidified body can be made to have good mechanical strong
Degree can be used as stablizing soil in geotechnical engineering by cured shield slurry.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that embodiment described herein is only used to explain the present invention, it is not used to limit
The present invention.
The present invention provides a kind of shield slurry curing agent, the component including following parts by weight: 10~20 parts of calcium oxide, white
3~8 parts of carbon black, 0.3~1.2 part of cellulose and load have 7~15 parts of sepiolite of molysite.
In the present invention, granularity≤0.08um of sepiolite, the content of the molysite loaded in sepiolite is sepiolite itself weight
The 8~15% of amount.
In some preferred embodiments of the invention, the content of the molysite loaded in sepiolite is sepiolite own wt
12%；To enhance molysite to the flocculation treatment ability of shield slurry.
In the present invention, molysite is one of ferrous sulfate, iron chloride, poly-ferric chloride and bodied ferric sulfate.
In some preferred embodiments of the invention, molysite is poly-ferric chloride or bodied ferric sulfate.
In the present invention, cellulose is at least one in hydroxypropyl methyl cellulose, methylcellulose and hydroxyethyl cellulose
Kind.
In the present invention, the partial size of white carbon black is 30~60um, to increase the specific surface area of white carbon black.
The embodiment of the present invention also provides a kind of preparation method of shield slurry curing agent, includes the following steps:
(1) it stocks up by weight；
(2) calcium oxide, white carbon black and cellulose are uniformly mixed, obtain the first mixture；Load is had to the Hai Pao of molysite
Stone is uniformly mixed with the first mixture, obtains finished product.
The embodiment of the present invention also provides a kind of application method of shield slurry curing agent, and shield slurry curing agent is added
It in shield slurry, is sufficiently mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry after bleeding occurs solid
Change, to realize the dehydrating and curing processing of shield slurry, wherein the additional amount of shield slurry curing agent is shield slurry dry pulp weight
The 1.2~1.8% of amount.
In some preferred embodiments of the invention, the additional amount of shield slurry curing agent is shield slurry dry pulp weight
1.5%.
Below in conjunction with specific embodiment, the present invention will be described in further detail.It should be appreciated that tool described herein
Body embodiment is only used to explain the present invention, is not intended to limit the present invention.
Experimental method in the present invention is unless otherwise specified conventional method.
Experimental material used in the present invention is that market is commercially available unless otherwise specified.
Embodiment 1:
The embodiment of the present invention 1 provides a kind of shield slurry curing agent comprising the component of following parts by weight:
15 parts of calcium oxide, 5 parts of white carbon black (partial size is 30~60um), 0.4 part of hydroxypropyl methyl cellulose, hydroxy ethyl fiber
0.4 part of element and load have 10 parts of sepiolite of bodied ferric sulfate, wherein sepiolite partial size≤0.08um loads in sepiolite
The content of bodied ferric sulfate is the 12% of sepiolite own wt.
The shield slurry curing agent is prepared with the following method: by calcium oxide, white carbon black, hydroxypropyl methyl cellulose and hydroxyl
Ethyl cellulose is uniformly mixed, and obtains the first mixture；The first mixing is added in the sepiolite that load has bodied ferric sulfate
Object after being uniformly mixed, obtains finished product.
Shield slurry curing agent obtained in the present embodiment is added in shield slurry, the additional amount of shield slurry curing agent
It is the 1.5% of shield slurry dry pulp weight, the moisture content of shield slurry is 80%, and shield slurry curing agent and shield slurry are filled
Dividing and be uniformly mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry 5h after bleeding is cured,
Shield slurry after bleeding is prepared into the sample of diameter 50mm, height 100mm, standard curing demoulds after 1 day, and continues to conserve
3 days and 28 days, each age carried out unconfined compressive strength using three parallel samples.Shield slurry after solidification was supported at 3 days
Length of service as a nurse phase mean intensity can reach 1.92MPa, and curing age mean intensity can reach 2.84MPa within 28 days.
Embodiment 2:
The embodiment of the present invention 2 provides a kind of shield slurry curing agent comprising the component of following parts by weight:
12 parts of calcium oxide, 4.5 parts of white carbon black (partial size is 30~60um), 0.3 part of hydroxypropyl methyl cellulose, ethoxy are fine
0.2 part of dimension element and load have 8.5 parts of sepiolite of bodied ferric sulfate, wherein sepiolite partial size≤0.08um loads in sepiolite
Bodied ferric sulfate content be sepiolite own wt 10%.
The preparation method of the above-mentioned shield slurry curing agent of the present embodiment, process is the same as embodiment 1.
Shield slurry curing agent obtained in the present embodiment is added in shield slurry, the additional amount of shield slurry curing agent
It is the 1.5% of shield slurry dry pulp weight, the moisture content of shield slurry is 80%, and shield slurry curing agent and shield slurry are filled
Dividing and be uniformly mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry 5h after bleeding is cured,
Shield slurry after bleeding is prepared into the sample of diameter 50mm, height 100mm, standard curing demoulds after 1 day, and continues to conserve
3 days and 28 days, each age carried out unconfined compressive strength using three parallel samples.Shield slurry after solidification was supported at 3 days
Length of service as a nurse phase mean intensity can reach 1.68MPa, and curing age mean intensity can reach 2.46MPa within 28 days.
Embodiment 3:
The embodiment of the present invention 3 provides a kind of shield slurry curing agent comprising the component of following parts by weight:
18 parts of calcium oxide, 6.5 parts of white carbon black (partial size is 30~60um), 0.75 part of hydroxypropyl methyl cellulose, ethoxy
0.25 part of cellulose and load have 12 parts of sepiolite of bodied ferric sulfate, wherein sepiolite partial size≤0.08um is born in sepiolite
The content of the bodied ferric sulfate of load is the 13.5% of sepiolite own wt.
The preparation method of the above-mentioned shield slurry curing agent of the present embodiment, process is the same as embodiment 1.
Shield slurry curing agent obtained in the present embodiment is added in shield slurry, the additional amount of shield slurry curing agent
It is the 1.5% of shield slurry dry pulp weight, the moisture content of shield slurry is 80%, and shield slurry curing agent and shield slurry are filled
Dividing and be uniformly mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry 5h after bleeding is cured,
Shield slurry after bleeding is prepared into the sample of diameter 50mm, height 100mm, standard curing demoulds after 1 day, and continues to conserve
3 days and 28 days, each age carried out unconfined compressive strength using three parallel samples.Shield slurry after solidification was supported at 3 days
Length of service as a nurse phase mean intensity can reach 1.59MPa, and curing age mean intensity can reach 2.41MPa within 28 days.
Embodiment 4:
The embodiment of the present invention 4 provides a kind of shield slurry curing agent comprising the component of following parts by weight:
10 parts of calcium oxide, 3 parts of white carbon black (partial size is 30~60um), 0.15 part of hydroxypropyl methyl cellulose, Methyl cellulose
0.15 part of element and load have 7 parts of sepiolite of poly-ferric chloride, wherein sepiolite partial size≤0.08um loads in sepiolite
The content of bodied ferric sulfate is the 8% of sepiolite own wt.
The preparation method of the above-mentioned shield slurry curing agent of the present embodiment, process is the same as embodiment 1.
Shield slurry curing agent obtained in the present embodiment is added in shield slurry, the additional amount of shield slurry curing agent
It is the 1.5% of shield slurry dry pulp weight, the moisture content of shield slurry is 80%, and shield slurry curing agent and shield slurry are filled
Dividing and be uniformly mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry 5h after bleeding is cured,
Shield slurry after bleeding is prepared into the sample of diameter 50mm, height 100mm, standard curing demoulds after 1 day, and continues to conserve
3 days and 28 days, each age carried out unconfined compressive strength using three parallel samples.Shield slurry after solidification was supported at 3 days
Length of service as a nurse phase mean intensity can reach 1.33MPa, and curing age mean intensity can reach 2.17MPa within 28 days.
Embodiment 5:
The embodiment of the present invention 5 provides a kind of shield slurry curing agent comprising the component of following parts by weight:
20 parts of calcium oxide, 8 parts of white carbon black (partial size is 30~60um), 0.6 part of hydroxypropyl methyl cellulose, methylcellulose
0.6 part and load have 15 parts of sepiolite of poly-ferric chloride, wherein sepiolite partial size≤0.08um loads in sepiolite poly-
The content for closing ferric sulfate is the 15% of sepiolite own wt.
The preparation method of the above-mentioned shield slurry curing agent of the present embodiment, process is the same as embodiment 1.
Shield slurry curing agent obtained in the present embodiment is added in shield slurry, the additional amount of shield slurry curing agent
It is the 1.5% of shield slurry dry pulp weight, the moisture content of shield slurry is 80%, and shield slurry curing agent and shield slurry are filled
Dividing and be uniformly mixed, after realizing mud-water separation, secretes the clear water in mud surface layer, the shield slurry 5h after bleeding is cured,
Shield slurry after bleeding is prepared into the sample of diameter 50mm, height 100mm, standard curing demoulds after 1 day, and continues to conserve
3 days and 28 days, each age carried out unconfined compressive strength using three parallel samples.Shield slurry after solidification was supported at 3 days
Length of service as a nurse phase mean intensity can reach 1.21MPa, and curing age mean intensity can reach 1.93MPa within 28 days.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (9)
1. a kind of shield slurry curing agent, which is characterized in that the component including following parts by weight: 10~20 parts of calcium oxide, hard charcoal
Black 3~8 parts, 0.3~1.2 part of cellulose and load have 7~15 parts of sepiolite of molysite.
2. shield slurry curing agent according to claim 1, which is characterized in that granularity≤0.08um of the sepiolite,
And the content of the molysite loaded in the sepiolite is the 8~15% of sepiolite own wt.
3. shield slurry curing agent according to claim 2, which is characterized in that the molysite loaded in the sepiolite contains
Amount is the 12% of sepiolite own wt.
4. shield slurry curing agent according to claim 1, which is characterized in that the molysite be ferrous sulfate, iron chloride,
One of poly-ferric chloride and bodied ferric sulfate.
5. shield slurry curing agent according to claim 4, which is characterized in that the molysite is poly-ferric chloride or polymerization
Ferric sulfate.
6. shield slurry curing agent according to claim 1, which is characterized in that the cellulose is hydroxypropyl methyl fiber
At least one of element, methylcellulose and hydroxyethyl cellulose.
7. shield slurry curing agent according to claim 1, which is characterized in that the partial size of the white carbon black be 30~
60um。
8. a kind of preparation method of shield slurry curing agent as described in any one of claims 1 to 7, which is characterized in that including
Following steps:
S1, it stocks up by weight；
S2, calcium oxide, white carbon black and cellulose are uniformly mixed, obtain the first mixture；Will load have the sepiolite of molysite with
First mixture is uniformly mixed, and obtains finished product.
9. a kind of application method of shield slurry curing agent as described in any one of claims 1 to 7, which is characterized in that by institute
It states shield slurry curing agent to be added in shield slurry, be sufficiently mixed, after realizing mud-water separation, secrete the clear water in mud surface layer, secrete
Shield slurry after water is cured, wherein the additional amount of the shield slurry curing agent is the 1.2 of shield slurry dry pulp weight
~1.8%.
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| CN201910395789.8A CN110194577A (en) | 2019-05-13 | 2019-05-13 | A kind of shield slurry curing agent and its preparation method and application method |
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| CN201910395789.8A CN110194577A (en) | 2019-05-13 | 2019-05-13 | A kind of shield slurry curing agent and its preparation method and application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960624A (en) * | 2020-07-09 | 2020-11-20 | 浙江海逸环科院有限公司 | Curing agent formula and preparation method |
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