CN104498002B - Underground engineering sodium silicate collapse-proofing wall solidification type slurry and preparation method thereof - Google Patents
Underground engineering sodium silicate collapse-proofing wall solidification type slurry and preparation method thereof Download PDFInfo
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- CN104498002B CN104498002B CN201410688217.6A CN201410688217A CN104498002B CN 104498002 B CN104498002 B CN 104498002B CN 201410688217 A CN201410688217 A CN 201410688217A CN 104498002 B CN104498002 B CN 104498002B
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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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
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Abstract
The present invention discloses underground engineering sodium silicate collapse-proofing wall solidification type slurry and a preparation method thereof, and the slurry material comprises clay, sodium carbonate, a flocculant, a coupling agent, a sodium silicate collapse-proofing agent and water. The preparation method is as follows: adding alkalized bentonite slurry into water, mixing evenly, adding a flocculant solution into the slurry, mixing evenly, adding a coupling agent solution, mixing evenly, adding a collapse-proofing agent solution and balance of water, and mixing evenly. The underground engineering sodium silicate collapse-proofing wall solidification type slurry has strong collapse-proofing wall solidification capacity, drill dreg carrying capacity during circulation in holes and drill dreg flocculating and settling capacity when standing on the ground, the slurry material is free of toxic and side effect, low in economic cost, meets the requirements of environmental protection, is easy to prepare and use in engineering field, and can be repeatedly used and recycled.
Description
Technical field
The present invention relates to underground geotechnical engineering construction field, and in particular to a kind of anti-collapse hole Gu Bi of underground engineering waterglass class
Type mud and preparation method thereof.
Background technology
In recent years, with scientific and technological progress and economic development, China urban skyscraper, underground space engineering flourish,
Cause borehole engineering application very universal, particularly (stake footpath 400～2000mm of φ, stake is long several for large diameter bored pile engineering
Ten meters arrive hundreds of meters) usage amount every year reach billions of.Apply in pile foundation engineering and all kinds of underground engineerings drilling (or grooving)
In work, the complexity ground such as weakness, air slaking, loose, broken, developmental joint fissure, water-swellable (water sensitivity) stratum is frequently encountered,
Such rock-soil layer hole wall extremely unstable, is susceptible to cave in, misses, falls the boring accidents such as block, bit freezing, burying.How to guarantee multiple
The stability of miscellaneous stratum hole wall is one of main difficult technical that needs are solved.It was verified that good from the solid wall performance of anti-collapse hole
Mud materials be to ensure that bad ground wall stability, improve borehole engineering quality, improve production efficiency, reduce production cost
Most effective approach.
At present, existing underground engineering borehole wall-protection mud is mainly finely divided mud, does not disperse polyacrylamide mud, water
Category of glass unfixed phase slurry.1) finely divided mud component mainly has bentonite, soda, sodium carboxymethyl cellulose (Na-CMC).Sodium
Carboxymethyl cellulose plays anti-collapse effect in finely divided mud component, but anti sloughing effectiveness is poor.Finely divided mud solid phase amount of sweat is high, glues
Native high degree of dispersion, mud viscosity is big, mud skin depth and it is loose, fluid loss is big, retaining wall poor performance, boring mud soil and is seriously dispersed in mud
In, mud balance is further increased, cause pumping resistance and power consumption big, mud is difficult in ground purification, and mud repeats
Service efficiency is low.2) polyacrylamide mud component is not disperseed mainly to have bentonite, soda, partially hydrolyzed polyacrylamide (PHPA)
(PHP), polypropylene fine (HPAN) or sodium carboxymethyl cellulose (Na-CMC) are hydrolyzed.Hydrolysis polypropylene fine (HPAN) or sodium carboxymethyl
Cellulose (Na-CMC) plays anti-collapse effect, but is not fine to sandy soil stratum anti sloughing effectiveness.Polyacrylamide mud is not disperseed
The solid wall performance of anti-collapse hole has strengthened than finely divided mud, but mud is relatively costly.3) waterglass class unfixed phase slurry component master
There are waterglass, partially hydrolyzed polyacrylamide (PHPA).It is added without bentonite in such mud, waterglass plays anti-collapse effect, but because
Formed slowly in mud cake on the wall of borehole and mud skin is excessively thin, anti sloughing effectiveness is poor.
The content of the invention
It is low and anti-collapse that the technical problem to be solved is to provide a kind of low cost, non-environmental-pollution, solid concentration
The solid wall energy power in hole strong underground engineering borehole wall-protection solid wall-shaped mud of the anti-collapse hole of waterglass class and preparation method thereof.Realize this
The technical scheme of improving eyesight is as follows：
The solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class has following components in parts by weight：10 parts～20 parts of clay,
2 parts～4 parts of soda, 0.5 part～1.5 parts of flocculant, 0.1 part～0.3 part of bridging agent, 8 parts～24 parts of waterglass anti-sloughing agent, water
951.2 parts～979.4 parts.Soda component therein is added at twice：1 part～2 parts are added during clay pre-soaking basification (to account for
1/2 or so of the total consumption of soda), the soda (accounting for 1/2 or so of the total consumption of soda) of surplus is under flocculant room temperature during predissolve
Add.
The clay of the solid wall-shaped mud of the anti-collapse hole of the underground engineering waterglass class for pulping bentonite, containing 65%～
90% montmorillonite；Flocculant is partially hydrolyzed polyacrylamide (PHPA), its molecular weight 5,000,000～30,000,000, degree of hydrolysis 27%～
33%；Bridging agent is anhydrous slufuric acid aluminum；Anti-sloughing agent is waterglass (Na2O·nSiO2), its modulus 2.6～3.3, proportion 1.3～
1.4。
Another object of the present invention is to provide the preparation side of the solid wall-shaped mud of the anti-collapse hole of above-mentioned underground engineering waterglass class
Method is implemented according to the following steps：
1. by preparation 1m3Mud materials is calculated, and measures soda 1kg～2kg (accounting for 1/2 or so of the total dosage of soda), is put into
Dissolved under room temperature in a certain amount of water；Then measure clay 10kg～20kg to add in soda ash solution, obtain after stirring
Through the clay serosity (clay concentration is less than 50%) for alkalizing, more than 12h is standing and soak for stand-by.
2. by preparation 1m3Mud materials is calculated, and measures soda 1kg～2kg (accounting for 1/2 or so of the total dosage of soda), is put into
Dissolved under room temperature in a certain amount of water；Then measure flocculant 0.5kg～1.5kg to add in soda ash solution, after stirring
Flocculant solution (concentration of ordinary dissolution is less than 5%) is obtained, 6h is stood stand-by.
3. by preparation 1m3Mud materials is calculated, and measures bridging agent 0.1kg～0.3kg, is dissolved in the water under room temperature, is stirred
Obtain connecting agent solution (concentration of ordinary dissolution is less than 20%) after mixing uniformly, stand 5min stand-by.
4. by preparation 1m3Mud materials is calculated, and measures anti-sloughing agent 8kg～24kg, plus suitable quantity of water (amount of water is anti-collapse dosage
1～2 times) be diluted.
5. by preparation 1m3Mud materials is calculated, and the clay serosity after 1. step is alkalized is poured into equipped with excess water (total water
Measure as 951.2kg～979.4kg) container in, after stirring, the flocculant solution that 2. configures of step is added in container,
Continue to be stirred until homogeneous, the connection agent solution for adding step 3. to configure, after stirring, add step anti-collapse agent solution 4.,
The solid wall-shaped mud of the required anti-collapse hole of underground engineering waterglass class is obtained after continuing to stir.
The clay of the solid wall-shaped mud of the anti-collapse hole of above-mentioned underground engineering waterglass class for pulping bentonite, containing 65%～
90% montmorillonite；Flocculant is partially hydrolyzed polyacrylamide (PHPA), its molecular weight 5,000,000～30,000,000, degree of hydrolysis 27%～
33%；Bridging agent is anhydrous slufuric acid aluminum；Anti-sloughing agent is waterglass (Na2O·nSiO2), its modulus 2.6～3.3, proportion 1.3～
1.4。
The parameter that waterglass is found in present invention research is influential on mud property, if the modulus of waterglass is less than
2.6, cause SiO2Content is too low, declines anti sloughing effectiveness；If the modulus of waterglass is higher than 3.3, although improve SiO2Content,
But the elecrtonegativity increase of solution, can reduce on the contrary the adsorption effect of waterglass and hole wall sand grains, equally make under anti sloughing effectiveness
Drop.The modulus of waterglass is higher, and cost is also higher.Therefore in the present invention, preferable modulus of water glass is 2.6～3.3, water glass
The proportion 1.3～1.4 of glass, is 35～40 equivalent to Baume degrees0Be ' (available commercially to can buy).
The solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class of the present invention belongs to and do not disperse low solids mud category,
Its solid concentration is also lower than the existing low solids mud at present, and (" the low solid phase " that tradition is not disperseed in the low solids mud refers to mud
Solid concentration (all solid phases such as pulping clay and boring mud) in slurry system is less than by volume 4%), it is so-called not to be dispersed with 3
Layer implication：One is that high polymer presence inhibits the dispersion of pulping clay particle and makes its particle diameter keep larger and do not disperse；Two
It is that flocculation is risen to the boring mud (also referred to as landwaste) into mud system, disperses it, beneficial to slagging-off and purification mud；
Three is the cementing protective effect to borehole wall ground, makes the stability of hole wall ground and strengthens, and is not distributed in mud, it is ensured that occur without
Collapse hole problem.
The present invention using waterglass as mud anti-sloughing agent, using partially hydrolyzed polyacrylamide (PHPA) as mud flocculation
Agent, using anhydrous slufuric acid aluminum as the bridging agent of mud, the amide group in partially hydrolyzed polyacrylamide (PHPA) is moderately connected
Come, form network structure, be adsorbed in hole wall ground surface, improve the cementing protective effect to hole wall ground, enhance mud
The solid wall energy power of guard aperture.
The present invention has positive effect：
(1) the solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class of the invention and current existing low solids mud phase
Than solid phase (the referring to clay and boring mud) content of mud is low, and mud balance is light, and boring mud ability and quiet on ground is carried during the interior circulation of hole
Coagulation boring mud ability is all very strong when only.Because the mud solid concentration of the present invention is low, modest viscosity, mud circulates required mud
The power of stock pump engine is relatively low.By taking sandy soil stratum cast-in-situ bored pile as an example, by 0.8 meter of bore diameter, 100 meters of calculating of hole depth,
Drilling circulation is carried out using mud of the present invention, the power of required slush pump engine is 15kW～20kW.And adopt finely divided mud
Slurry, the power of its slush pump engine is 25kW～40kW；Using not disperseing polyacrylamide mud, its slush pump engine
Power is 20kW～30kW.
(2) Mud Technology good economical benefit.
1. mud of the present invention is compared with the current existing low solids mud, solid phase (the referring to clay and boring mud) content of mud
Low, light specific gravity carries boring mud ability and coagulation boring mud ability is all very low in ground static during the interior circulation of hole.Because used by mud
Bentonite is few, and mud is reusable, alleviates the impact to environmental disruption.
2. the anti-collapse hole of underground engineering waterglass class of the invention consolidates viscosity, API fluid losses, gel strength, the stream of wall-shaped mud
The performance indications such as degeneration, absorption cementing properties are excellent：Density 1.03g/cm3～1.08g/cm3, funnel viscosity 24s～36s, API loses
The water yield (0.7MPa pressure reduction) 8ml/30min～18ml/30min；Serosity flow pattern belongs to Bingham fluid, and 600 rotate Viscosity readings
For 15 lattice～32 lattice, yield value 2.8Pa～5.1Pa, mud skin thin and compact (thickness 0.3mm～0.5mm) is dilute with well shearing
The ability of the property released and purification coagulation boring mud, to weakness, air slaking, loose, broken, developmental joint fissure, water-swellable (water sensitivity)
There is the stronger anti-collapse effect of cementing retaining wall Deng complicated ground stratum, the stability of such bad ground hole wall is favorably improved,
Ensure that the construction quality of underground engineering.
3. mud of the invention is easy to engineering site to prepare and use, recyclable to be repeated several times after desanding precipitation
Use.Existing underground engineering borehole wall-protection mud be mainly finely divided mud, do not disperse polyacrylamide mud, waterglass class without
Solid mud.
Finely divided mud：Mud solid concentration height itself (often prepares 1m3Mud, needs bentonite 100kg～200kg), mud
Slurry drains into ground sedimentation tank from after the interior circulation of hole, and because boring mud has been fully dissolved in mud system, mud viscosity is especially big, boring mud
Can not smoothly precipitate, reduce the reusable rate of mud, increased mud outward transport amount and cost of transportation, ring is polluted again
Border.
Polyacrylamide mud is not disperseed：Such mud solid concentration is of a relatively high (often to prepare 1m3Mud, needs bentonite
40kg～50kg), in addition solid hole wall effect is not particularly evident, causes collapse hole, increases the solid concentration in mud system, mud
When slurry drains into ground sedimentation tank from after the interior circulation of hole, the coagulation of boring mud solid phase will consume substantial amounts of partial hydrolysiss polyacrylamide
Amine, reusable serviceability rate is low.Maintain the low solid phase of mud system, it is necessary to timely the consumed portion of supplement in mud
Divide the consumption of hydrolyzed polyacrylamide, this undoubtedly increased mud cost.
Waterglass class unfixed phase slurry：Because waterglass consumption height (often prepares 1m3Mud, needs waterglass 60kg～80kg),
Mud balance is increased, the solid phase dispersions such as boring mud is made in mud system.Equally, mud drains into ground from after the interior circulation of hole and sinks
During the pond of shallow lake, the coagulation of boring mud solid phase will consume substantial amounts of partially hydrolyzed polyacrylamide (PHPA), and reusable serviceability rate is low.Maintain
The low solid phase of mud system, it is necessary to the consumption of timely the consumed partially hydrolyzed polyacrylamide (PHPA) of supplement in mud, this nothing
Doubt and increased mud cost.
The mud of the present invention：Bentonite and waterglass consumption all (often prepare 1m than relatively low3Mud, need bentonite 10kg～
20kg, waterglass 8kg～24kg), the entirety guard aperture effect of mud each component can give full play of, and make the solid wall energy power of anti-collapse hole most
By force, hole wall is occurred without and caved in, and just reduces boring mud quantity, maintains solid concentration relatively low in mud system.So, mud from
When ground sedimentation tank is drained into after the interior circulation of hole, boring mud solid phase is easily achieved coagulation, and the partial hydrolysiss that coagulation is consumed gather
Acrylamide consumption is relatively low, and reusable serviceability rate is high.
(3) the solid wall-shaped mud asepsis environment-protecting of the anti-collapse hole of underground engineering waterglass class of the invention, Financial cost is low.Current city
The unit price of various mud components is following (yuan/ton) on field：Bentonite：300～500 yuan；Partially hydrolyzed polyacrylamide (PHPA)：14000
～18000 yuan；Sodium carboxymethyl cellulose：8000～13000 yuan；Hydrolysis polypropylene is fine：7000～10000 yuan；Waterglass：900
～1300 yuan；Anhydrous slufuric acid aluminum：1100～1350 yuan；Calcined soda for industry：1200～1400 yuan.
The solid wall-shaped mud asepsis environment-protecting of the anti-collapse hole of underground engineering waterglass class of the present invention, Financial cost is low.By current mud
The slurry inorganic agent market price is calculated, and prepares the 1m of the present invention3Mud cost is 30 yuan～45 yuan, at present existing 1m3Low solid phase mud
Slurry cost at 70 yuan～100 yuan, 1m3Finely divided mud cost at 180 yuan～240 yuan, 1m3Waterglass class unfixed phase slurry cost
At 80 yuan～110 yuan, rate of exchange Dominant Facies are when obvious.
Specific embodiment
Technical scheme is further illustrated below by way of specific embodiment.
The term for being used in the present invention, unless otherwise stated, typically there are those of ordinary skill in the art generally to manage
The implication of solution.
The present invention is described in further detail with reference to specific embodiment and with reference to data.It should be understood that these embodiments are only
It is in order to demonstrate the invention, rather than to limit the scope of the present invention by any way.
In the examples below, the various processes and method not described in detail are conventional methods as known in the art.
Embodiment 1
The solid wall-shaped mud component of the anti-collapse hole of underground engineering waterglass class of the present embodiment and content are (units/kg/m3)：It is swollen
Profit soil 15, soda 3, partially hydrolyzed polyacrylamide (PHPA) 0.8, anhydrous slufuric acid aluminum 0.2, waterglass 18, water 963.
The preparation method of the solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class of the present embodiment is comprised the following steps：
1. 1.5kg soda is put in the container equipped with 40kg water, after soda is completely dissolved, in container 15kg is added
Bentonite, after stirring makes bentonite be uniformly dispersed, soaks 12h, completes stand-by after bentonitic pre-soaking basification.It is described swollen
Profit soil is containing 80% montmorillonite.
2. 1.5kg soda is put in the container equipped with 20kg water, after soda is completely dissolved, is added in container
0.8kg partially hydrolyzed polyacrylamide (PHPA)s, obtain Partially Hydrolyzed Polyacrylamide Solution after stirring, stand 6h stand-by.It is described
Partially hydrolyzed polyacrylamide (PHPA), its molecular weight 12,000,000, degree of hydrolysis 30%.
3. 0.2kg anhydrous slufuric acids aluminum is added in 10kg water, anhydrous slufuric acid aluminum solutions is obtained after stirring, stand 5min
It is stand-by.
4. 18kg waterglass is added and is diluted in 30kg water.The modulus 3.0 of the waterglass, proportion 1.35.
5. the bentonite slurry after step is 1. alkalized is poured into equipped with the excess water i.e. container of 863kg water, and stirring 10min is extremely
Uniform state, the Partially Hydrolyzed Polyacrylamide Solution for adding step 2. to configure in container continues to stir 6min to uniform shape
State, the anhydrous slufuric acid aluminum solutions for adding step 3. to configure in container continue to stir 6min to uniform state, add in container
The water glass solution that 4. step is prepared, continues to stir 8min to uniform state, that is, obtain the anti-collapse hole of underground engineering waterglass class and consolidate
Wall-shaped mud.The mud specific performance parameter of the present embodiment refers to table 1 below.
Embodiment 2
The solid wall-shaped mud component of the anti-collapse hole of underground engineering waterglass class of the present embodiment and content are (units/kg/m3)：It is swollen
Profit soil 10, soda 2, partially hydrolyzed polyacrylamide (PHPA) 0.5, anhydrous slufuric acid aluminum 0.1, waterglass 8, water 979.4.
The preparation method of the solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class of the present embodiment is comprised the following steps：
1. 1kg soda is put in the container equipped with 30kg water, after soda is completely dissolved, adds 10kg swollen in container
Profit soil, after stirring makes bentonite be uniformly dispersed, soaks 12h, completes stand-by after bentonitic pre-soaking basification.The swelling
Soil is containing 90% montmorillonite.
2. 1kg soda is put in the container equipped with 15kg water, after soda is completely dissolved, in container 0.5kg is added
Partially hydrolyzed polyacrylamide (PHPA), obtains Partially Hydrolyzed Polyacrylamide Solution after stirring, stand 6h stand-by.The part water
Solution polyacrylamide, its molecular weight 5,000,000, degree of hydrolysis 33%.
3. 0.1kg anhydrous slufuric acids aluminum is added in 5kg water, anhydrous slufuric acid aluminum solutions is obtained after stirring, stand 5min
It is stand-by.
4. 8kg waterglass is added and is diluted in 15kg water.The modulus 2.6 of the waterglass, proportion 1.3.
5. the clay serosity after step is 1. alkalized is poured into equipped with the excess water i.e. container of 914.4kg water, stirs 8min
To uniform state, the Partially Hydrolyzed Polyacrylamide Solution for adding step 2. to configure in container continues to stir 5min to uniform
State, the anhydrous slufuric acid aluminum solutions for adding step 3. to configure in container continue to stir 5min to uniform state, add in container
Enter the water glass solution that 4. step is prepared, continue to stir 6min to uniform state, that is, obtain the anti-collapse hole of underground engineering waterglass class
Gu wall-shaped mud.The mud specific performance parameter of the present embodiment refers to table 1 below.
Embodiment 3
The solid wall-shaped mud component of the anti-collapse hole of underground engineering waterglass class of the present embodiment and content are (units/kg/m3)：It is swollen
Profit soil 20, soda 4, partially hydrolyzed polyacrylamide (PHPA) 1.5, anhydrous slufuric acid aluminum 0.3, waterglass 24, water 951.2.
The preparation method of the solid wall-shaped mud of the anti-collapse hole of underground engineering waterglass class of the present embodiment is comprised the following steps：
1. 2kg soda is put in the container equipped with 50kg water, after soda is completely dissolved, adds 20kg swollen in container
Profit soil, after stirring makes bentonite be uniformly dispersed, soaks 12h, completes stand-by after bentonitic pre-soaking basification.The swelling
Soil is containing 65% montmorillonite.
2. 2kg soda is put in the container equipped with 40kg water, after soda is completely dissolved, in container 1.5kg is added
Partially hydrolyzed polyacrylamide (PHPA), obtains Partially Hydrolyzed Polyacrylamide Solution after stirring, stand 6h stand-by.The part water
Solution polyacrylamide, its molecular weight 30,000,000, degree of hydrolysis 27%.
3. 0.3kg anhydrous slufuric acids aluminum is added in 10kg water, anhydrous slufuric acid aluminum solutions is obtained after stirring, stand 5min
It is stand-by.
4. 24kg waterglass is added and is diluted in 30kg water.The modulus 3.3 of the waterglass, proportion 1.4.
5. the clay serosity after step is 1. alkalized is poured into equipped with the excess water i.e. container of 821.2kg water, stirs 10min
To uniform state, the Partially Hydrolyzed Polyacrylamide Solution for adding step 2. to configure in container continues to stir 10min to uniform
State, the anhydrous slufuric acid aluminum solutions for adding step 3. to configure in container continue to stir 7min to uniform state, add in container
Enter the water glass solution that 4. step is prepared, continue to stir 8min to uniform state, that is, obtain the anti-collapse hole of underground engineering waterglass class
Gu wall-shaped mud.The mud specific performance parameter of the present embodiment refers to table 1 below.
Embodiment 4
Performance detection is carried out to embodiments of the invention 1-3, as a result as shown in table 1, and existing underground engineering is drilled
Slurry coat method：Finely divided mud, polyacrylamide mud, waterglass class unfixed phase slurry is not disperseed to carry out performance detection, as a result
As shown in table 2.
Note：Sand sample is invaded bubble experiment and is referred to：1. dry sand group is put into into immersion more than 48h in mud；2. dry sand group is put into into mud
Soak to be taken out after 1min in slurry and place into immersion more than 48h in water.Both invade bubble mode while carrying out, and sand sample all keeps solid
Knot state and do not dissipate for qualified.
The existing underground engineering borehole wall-protection mud embodiment of table 2
Contrast table 1 and table 2, it can be seen that existing underground engineering borehole wall-protection mud property is good not as the mud of the present invention,
No matter use which kind of anti-sloughing agent, sand sample immersion test can not reach long period of soaking and not scattered effect.The mud of the present invention makes
With waterglass as anti-sloughing agent, actually in appropriate bentonite, partially hydrolyzed polyacrylamide (PHPA), anhydrous slufuric acid aluminum and waterglass
It is overall playing anti-collapse hole Gu Bi effect after mixing, and the solid wall effect is significant of anti-collapse hole.Mud of the present invention is than existing finely divided mud
Starch, do not disperse polyacrylamide mud, the technical performance of waterglass class unfixed phase slurry will be superior, its resultant effect is good.
Embodiment 5
For the solid wall-shaped mud of the anti-collapse hole of waterglass class of the present invention, change the addition sequence of each component to mud
Performance impact is very big, and experiment shows, anti-collapse agent solution is added after flocculant solution and connection agent solution, its mud it is anti-
The solid wall effect of collapse hole is best.By taking the formula of the embodiment 1 in table 1 as an example, the addition sequence of anti-collapse agent solution, its mud are adjusted
Can change and be shown in Table 3.
Contrast finds out that water glass solution addition sequence shifts to an earlier date, and makes viscosity, fluid loss, yield value and the mudcake thickness of mud
Increased, but sand sample immersion test can not reach long period of soaking and not scattered effect, and shear thinning behavior and purification are poly-
Heavy boring mud ability has declined, and mud combination property adds again not as anti-collapse agent solution after flocculant solution and connection agent solution
What is entered is superior.
Impact of the addition sequence of the anti-sloughing agent of table 3 to the solid wall effect of preventing slurry collapse hole
Claims (2)
1. a kind of anti-collapse hole of underground engineering waterglass class consolidates wall-shaped mud, it is characterised in that including following components in parts by weight：It is glutinous
10 parts～20 parts of soil, 2 parts～4 parts of soda, 0.5 part～1.5 parts of flocculant, 0.1 part～0.3 part of bridging agent, waterglass anti-sloughing agent 8
Part～24 parts, 951.2 parts～979.4 parts of water；The clay is the bentonite for manufacturing mud, de- containing 65%～90% illiteracy
Stone, the flocculant be partially hydrolyzed polyacrylamide (PHPA), its molecular weight 5,000,000～30,000,000, degree of hydrolysis 27%～33%, the company
Agent is connect for anhydrous slufuric acid aluminum, the waterglass Na of the waterglass anti-sloughing agent2O·nSiO2, its modulus 2.6～3.3, proportion 1.3～
1.4, it is prepared from using following steps, by preparation 1m3Mud is calculated：
1. soda 1kg～2kg is taken, is put in a certain amount of water and is dissolved under room temperature；Then clay 10kg～20kg additions are taken pure
In aqueous slkali, the clay serosity through alkalizing is obtained after stirring, clay concentration is less than 50%, is standing and soak for more than 12h and treats
With；
2. soda 1kg～2kg is taken, is put in a certain amount of water and is dissolved under room temperature；Then take flocculant 0.5kg～1.5kg to add
In entering soda ash solution, flocculant solution is obtained after stirring, concentration of ordinary dissolution is less than 5%, stands 6h stand-by；
3. bridging agent 0.1kg～0.3kg is taken, is dissolved in the water under room temperature, obtain connecting agent solution, dissolving after stirring
Concentration is less than 20%, stands 5min stand-by；
4. anti-sloughing agent 8kg～24kg, plus suitable quantity of water are taken, amount of water is 1～2 times of anti-collapse dosage, is diluted；
5. the clay serosity after step is 1. alkalized is poured in the container equipped with excess water, after stirring, is added in container
The flocculant solution that 2. step configures, continues to be stirred until homogeneous, and adds the connection agent solution that 3. configures of step, continues to stir to equal
It is even, step anti-collapse agent solution 4. is added, the required anti-collapse hole of underground engineering waterglass class is obtained after continuing to stir
Gu wall-shaped mud.
2. a kind of anti-collapse hole of underground engineering waterglass class as claimed in claim 1 consolidates the preparation method of wall-shaped mud, its feature
It is to comprise the steps, by preparation 1m3Mud is calculated：
1. soda 1kg～2kg is taken, is put in a certain amount of water and is dissolved under room temperature；Then clay 10kg～20kg additions are taken pure
In aqueous slkali, the clay serosity through alkalizing is obtained after stirring, clay concentration is less than 50%, is standing and soak for more than 12h and treats
With；
2. soda 1kg～2kg is taken, is put in a certain amount of water and is dissolved under room temperature；Then take flocculant 0.5kg～1.5kg to add
In entering soda ash solution, flocculant solution is obtained after stirring, concentration of ordinary dissolution is less than 5%, stands 6h stand-by；
3. bridging agent 0.1kg～0.3kg is taken, is dissolved in the water under room temperature, obtain connecting agent solution, dissolving after stirring
Concentration is less than 20%, stands 5min stand-by；
4. anti-sloughing agent 8kg～24kg, plus suitable quantity of water are taken, amount of water is 1～2 times of anti-collapse dosage, is diluted；
5. the clay serosity after step is 1. alkalized is poured in the container equipped with excess water, after stirring, is added in container
The flocculant solution that 2. step configures, continues to be stirred until homogeneous, and adds the connection agent solution that 3. configures of step, continues to stir to equal
It is even, step anti-collapse agent solution 4. is added, the required anti-collapse hole of underground engineering waterglass class is obtained after continuing to stir
Gu wall-shaped mud；
The step 2. in flocculant be partially hydrolyzed polyacrylamide (PHPA), its molecular weight 5,000,000～30,000,000, degree of hydrolysis 27%
～33%, step bridging agent 3. be anhydrous slufuric acid aluminum, the step 4. in waterglass anti-sloughing agent be modulus 2.6～
3.3, the waterglass Na of proportion 1.3～1.42O·nSiO2。
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| CN106118620A (en) * | 2016-06-23 | 2016-11-16 | 中国路桥工程有限责任公司 | A kind of cast-in-situ bored pile mud and preparation method thereof |
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| CN107739597A (en) * | 2017-10-17 | 2018-02-27 | 沈阳工业大学 | Alluvial plain Karst Area bored pile slurry coat method and preparation method thereof |
| CN111363528A (en) * | 2020-04-20 | 2020-07-03 | 河南城建学院 | Underground engineering water glass anti-collapse hole wall-fixing slurry and preparation method thereof |
| CN113829498A (en) * | 2021-11-26 | 2021-12-24 | 中铁建工集团有限公司 | Preparation method and system of underground continuous wall retaining mud |
| CN116042197A (en) * | 2022-12-12 | 2023-05-02 | 深圳宏垚环保科技有限公司 | Waste mud modification preparation method for gravel layer area |
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