CN110885227A - Curing agent for curing slurry of hollow pile section, preparation method and construction method - Google Patents
Curing agent for curing slurry of hollow pile section, preparation method and construction method Download PDFInfo
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- CN110885227A CN110885227A CN201911206000.6A CN201911206000A CN110885227A CN 110885227 A CN110885227 A CN 110885227A CN 201911206000 A CN201911206000 A CN 201911206000A CN 110885227 A CN110885227 A CN 110885227A
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- 239000002002 slurry Substances 0.000 title claims abstract description 104
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 119
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 88
- 239000002699 waste material Substances 0.000 claims abstract description 46
- 239000000654 additive Substances 0.000 claims abstract description 32
- 230000000996 additive effect Effects 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000007711 solidification Methods 0.000 claims abstract description 15
- 230000008023 solidification Effects 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 239000004568 cement Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 4
- 229920001732 Lignosulfonate Polymers 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 3
- 150000002191 fatty alcohols Chemical class 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000029087 digestion Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 21
- 230000007246 mechanism Effects 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to the technical field of slurry hardening treatment of hollow pile sections, and discloses a curing agent for slurry hardening treatment of hollow pile sections, a preparation method and a construction method, wherein the curing agent comprises a high-efficiency structuring agent and an additive, the high-efficiency structuring agent and the additive are mixed with water to form cured slurry, the high-efficiency structuring agent is stirred, then the additive is added, and the cured slurry is formed by stirring with water, so that the preparation is realized; the solidified body and the water are mixed more uniformly through multi-stage stirring; meanwhile, compressed air and solidified slurry are conveyed to the hollow pile section, so that the solidified slurry and the waste slurry are stirred and mixed conveniently, and hardening construction is realized; multistage stirring makes each component of curing agent mix more evenly, adopts this kind of curing agent, and the hydration reaction degree is higher, and the solidification speed is faster, fast digestion construction produced high water waste mud, prevents the potential safety hazard that its long-term piling brought to make its high-efficient resourceization, and the intensity of solidification soil is higher, satisfies the demand of ground bearing capacity.
Description
Technical Field
The invention relates to the technical field of hollow pile section mud hardening treatment, in particular to a curing agent for the hollow pile section mud hardening treatment, a preparation method and a construction method.
Background
The cast-in-situ bored pile is a foundation for pouring underwater concrete by adopting a percussion drill and a mud wall protection method according to geological conditions, intensively mixing concrete by a mixing station, transporting by a concrete mixing transport vehicle, processing and forming a reinforcement cage at one time and adopting a conduit method; during construction, the foundation pit is provided with the inner support, so that construction is performed downwards from the ground to avoid the rotary drilling rig from touching the inner support, and therefore after concrete pouring is finished, a section of hollow pile section which does not need to be constructed with reinforced concrete is formed from the ground to the pile top, and the hollow pile section is filled with residual waste mud for retaining walls during rotary drilling pile construction.
The empty pile section after construction needs to be refilled in time, otherwise, safety accidents such as hole collapse and even falling of personnel are easy to happen; at present, in domestic engineering, a method for backfilling broken stones or brick slag after waste slurry in an empty pile section is pumped out by a pump is often used for backfilling the empty pile section, however, in the process of pumping out the slurry by adopting the method, the slurry is too thick, so the construction is difficult, and the slurry is difficult to pump out and empty, so partial slurry is often left at the bottom, so a weak layer exists at the lower part of the empty pile section after backfilling, the bearing capacity of a foundation is influenced, and meanwhile, the method for backfilling the empty pile section by using an excavator to carry the broken stones or the brick slag wastes time and labor, has high cost and long construction period.
Therefore, a method for curing after mixing a curing agent with waste mud in the hole is developed, in the prior art, PO32.5 cement is often used as the curing agent for curing the waste mud in the hole, the cement and water are pre-stirred into cement paste, the cement paste and high-pressure air are injected into an empty pile section together through a grouting pump, and the cement paste and the waste mud are fully stirred and cured in the process of rising of the high-pressure air; the method has the defects of high cost and the like, particularly, the residual moisture content is still high after the waste slurry is solidified by adopting cement, secondary pumping treatment is needed, and the operation is complex, so that the popularization and the application of the technology are influenced.
The industrial waste such as fly ash and the like is used for preparing a curing agent, and then the curing agent is mixed with sludge to form cured soil after curing; the method utilizes industrial waste materials, has the characteristic of environmental protection, but the final performance of the solidified soil is not high, is suitable for sludge, and has poor solidification effect on extremely-thin engineering waste slurry with the water content higher than 80%.
Disclosure of Invention
The invention aims to provide a curing agent for curing slurry of a hollow pile section, a preparation method and a construction method, and aims to solve the problem of poor curing effect of the slurry curing of the hollow pile section in the prior art.
The invention is realized in such a way that the curing agent for the mud hardening treatment of the hollow pile section comprises a high-efficiency structural agent and an additive, wherein the high-efficiency structural agent and the additive are mixed with water to form cured slurry; the efficient structuring agent accounts for 10-20% of the weight of the waste mud, the water accounts for 10-20% of the weight of the waste mud, and the additive accounts for 0.5-1.5% of the weight of the waste mud.
Further, the efficient structuring agent is one or a combination of more than one of desulfurized gypsum, fly ash, mineral powder and cement, and the specific surface area of the efficient structuring agent powder is more than or equal to 400m2/kg。
Further, the additive is compounded by one or more of lignosulfonate, naphthalenesulfonate, sulfate, polycarboxylic acid series, alkylbenzene and fatty alcohol in any proportion, and the specific surface area of the additive powder is more than or equal to 350m2/kg。
Further, the preparation method of the curing agent for the mud hardening treatment of the hollow pile section comprises the steps of adding the high-efficiency structuring agent into a feeding system, adding the high-efficiency structuring agent into the feeding system in sequence, stirring the multiple components for 10-20 minutes, adding the additive, and stirring for 10 minutes to form the curing slurry.
Further, the construction method of the curing agent for curing the slurry in the hollow pile section comprises an injection pump and an air compressor, wherein the high-efficiency structural agent is formed by mixing the additive and water through two stages of stirring, the injection pump injects the cured slurry into the waste slurry in the hollow pile section, and the high-pressure air generated by the air compressor and the cured slurry are synchronously injected into the waste slurry.
Further, including the one-level agitator that has the one-level mixer, the second grade agitator that has the second grade mixer, injection pipe and high-pressure blast pipe, concrete construction steps are as follows:
(1) after the high-efficiency structuring agent is added into a feeding system, stirring is carried out for 10-20 minutes, then the admixture is added, and stirring is carried out for 10 minutes to form a solidified body;
(2) mixing the solidified body with water, forming the solidified slurry according to the proportion of which the water-cement ratio ranges from 0.8% to 1.2%, placing the solidified slurry in the primary stirring barrel, stirring the solidified slurry by the primary stirring machine, then flowing out of the primary stirring barrel, flowing into the secondary stirring barrel, performing secondary stirring by the secondary stirring machine, and pumping the solidified slurry into the waste slurry in the hollow pile section by the grouting pump;
(3) during grouting, one end of the injection pipe is in butt joint with the grouting pump, the other end of the injection pipe extends to the bottom of the hollow pile section, one end of the high-pressure air pipe is in butt joint with the air compressor, and the other end of the high-pressure air pipe extends to the bottom of the hollow pile section; the solidification slurry warp the grouting pump pours into the bottom to the hollow pile section into, air compressor produces compressed air and passes through the high-pressure air pipe carries the bottom to the hollow pile section, the grouting of grouting pump with air compressor carries compressed air and goes on in step.
(4) And after 1 day of grouting, forming solidified soil by the solidified slurry and the waste slurry.
Further, in the step (2), the solidified slurry stirred by the primary stirrer flows into the secondary stirring barrel after passing through a screen.
Further, the solidified body is packaged in a bag and stored in a dry and light-proof environment, and when the solidified body is used, the solidified body is transported to an empty pile section position needing slurry solidification through a forklift.
Furthermore, the hollow pile section is provided with an inner wall, a gap is formed between the solidified soil and the inner wall of the hollow pile section, and after the solidified soil is solidified for 3 days, broken stones or brick slag are backfilled in the gap, and then the ground is compacted and leveled.
Compared with the prior art, the curing agent for curing the slurry of the hollow pile section provided by the invention has the advantages that the waste slurry is cured by the high-efficiency structural agent, the curing performance is enhanced by the aid of the additive, and the curing agent meeting different working condition requirements is obtained by mutual coordination of the components, so that the curing agent is excellent in performance and wide in application range; by the construction method of the curing agent for curing the slurry of the hollow pile section, high-water-content waste slurry generated in urban construction is rapidly absorbed on a large scale, potential safety hazards caused by long-term stacking of the high-water-content waste slurry are prevented, the high-water-content waste slurry is efficiently recycled, the strength of the cured soil is higher, and the requirement of foundation bearing capacity is met.
Drawings
FIG. 1 is a construction schematic diagram of a construction method of a curing agent for mud hardening treatment of an empty pile section provided by the invention;
FIG. 2 is a schematic construction layout of the construction method of the curing agent for mud hardening treatment of the empty pile section provided by the invention;
FIG. 3 is a schematic cross-sectional view of a stirring structure provided by the present invention;
fig. 4 is a perspective view of the injection pipe provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, preferred embodiments of the present invention are shown.
The curing agent for the mud hardening treatment of the hollow pile section comprises a high-efficiency structural agent and an additive, the high-efficiency structural agent, the additive and water are mixed to form cured slurry, the hollow pile section 300 is provided with waste mud, and the cured slurry and high-pressure air are injected into the waste mud together; the efficient structural agent accounts for 10-20% of the weight of the waste mud, the water accounts for 10-20% of the weight of the waste mud, and the additive accounts for 0.5-1.5% of the weight of the waste mud.
The curing agent for curing the slurry of the hollow pile section is used for curing waste slurry through the efficient structural agent, simultaneously is supplemented with the additive to enhance the curing performance, and the curing agent meeting the requirements of different working conditions is obtained through the mutual coordination of the components, so that the curing agent is excellent in performance and wide in application range.
The high-efficiency structuring agent is one or the combination of more than one of desulfurized gypsum, fly ash, mineral powder and cement, and the specific surface area of the high-efficiency structuring agent powder is more than or equal to 400m 2/kg; the efficient structuring agent has the characteristic of environmental protection, realizes the reutilization of industrial waste, accords with the principle of green sustainable development of the building industry, has good development prospect, and ensures the curing effect of the efficient structuring agent on waste slurry.
The additive is compounded with one or more of lignosulfonate, naphthalene sulfonate, sulfate, polycarboxylic acid, alkylbenzene and fatty alcohol in any proportion, and the specific surface area of the additive powder is not less than 350m2Per kg; the high-efficiency structural agent is assisted, and the curing effect of the waste slurry is enhanced.
The preparation method of the curing agent for the mud hardening treatment of the hollow pile section comprises the steps of adding the high-efficiency structuring agent into a feeding system, wherein the high-efficiency structuring agent is one or more components, sequentially adding the components into the feeding system, stirring for 10-20 minutes, then adding the additive, and stirring for 10 minutes to form the cured slurry.
According to the preparation method of the curing agent for the mud hardening treatment of the hollow pile section, under the action of the feeding system, the mixing of the high-efficiency structuring agent and the mixing of the additive and the high-efficiency structuring agent are enhanced, the mixing effect is improved, and the fixing effect of the fixed slurry formed by subsequent mixing with water is enhanced.
The construction method of the curing agent for the mud hardening treatment of the hollow pile section comprises an injection pump 230 and an air compressor 240, wherein the high-efficiency structural agent, the additive and water are subjected to secondary stirring to form cured slurry, the injection pump 230 injects the cured slurry into the waste mud in the hollow pile section 300, and high-pressure air generated by the air compressor 240 and the cured slurry are synchronously injected into the waste mud; meanwhile, compressed air and solidified slurry are conveyed to the hollow pile section 300, so that the solidified slurry and the waste slurry are stirred and mixed more uniformly, the hydration reaction degree is higher, the slurry solidification speed is higher, and the requirements of on-site mechanical construction are met.
Including the one-level agitator 111 that has the one-level mixer, the second grade agitator 121 that has the second grade mixer, injection pipe 210 and high-pressure air pipe 220, concrete construction steps are as follows:
(1) after the high-efficiency structuring agent is added into a feeding system, stirring is carried out for 10-20 minutes, then the admixture is added, and stirring is carried out for 10 minutes to form a solidified body;
(2) mixing the solidified body with water according to the proportion of 0.8-1.2% of the water-cement ratio to form solidified slurry, placing the solidified slurry in a primary stirring barrel 111, stirring the solidified slurry by a primary stirrer, then flowing out of the primary stirring barrel 111, flowing into a secondary stirring barrel 121, performing secondary stirring by a secondary stirrer, and pumping the solidified slurry into the waste slurry in the hollow pile section 300 through an injection pump 230;
(3) during grouting, one end of the injection pipe 210 is in butt joint with the grouting pump 230, the other end of the injection pipe 210 extends to the bottom of the hollow pile section 300, one end of the high-pressure air pipe 220 is in butt joint with the air compressor 240, and the other end of the high-pressure air pipe 220 extends to the bottom of the hollow pile section 300; the solidified slurry is injected into the bottom of the hollow pile section 300 through the grouting pump 230, the air compressor 240 generates compressed air and transmits the compressed air to the bottom of the hollow pile section 300 through the high-pressure air pipe 220, and grouting of the grouting pump 230 and transmission of the compressed air by the air compressor 240 are synchronously performed.
(4) And solidifying the solidified soil formed by the slurry and the waste slurry after the grouting is finished for 1 day.
Through the steps, the mud hardening treatment of the hollow pile section 300 is realized, the feeding system enables the mixing of the high-efficiency structuring agent and the additive to be more sufficient, the formed solidified body is more uniform, the solidified body and water are more uniformly mixed through multi-stage stirring, and the formed solidified slurry is more uniform; meanwhile, compressed air and solidified slurry are conveyed to the hollow pile section 300, so that the solidified slurry and the waste slurry are stirred and mixed more uniformly, the hydration reaction degree is higher, the slurry solidification speed is higher, and the requirements of on-site mechanical construction are met.
In the step (2), the solidified slurry stirred by the primary stirrer flows into the secondary stirring barrel 121 after passing through a screen; under the effect of screen cloth, avoid stirring in insufficient solidification slurry gets into second grade agitator 121 to and the solidification slurry of large granule gets into second grade agitator 121 in, thereby the stirring effect of the second grade mixer of being convenient for, simultaneously, improve stirring effect.
The solidified body is packed into a bag and stored in a dry and light-proof environment, and when the solidified body is used, the solidified body is transported to the position of the empty pile section 300 needing to solidify the slurry by a forklift; the storage of the solidified body is ensured, and the transportation and the transfer of the solidified body are convenient.
The hollow pile section 300 is provided with an inner wall, a gap is formed between the solidified soil and the inner wall of the hollow pile section 300, after the solidified soil is solidified for 3 days, broken stones or brick slag are backfilled in the gap, and then the ground is compacted and leveled; and the construction machine entering construction operation is realized.
The construction method of the curing agent for mud hardening treatment of the hollow pile section 300 comprises a stirring structure 100 and an injection structure 200, wherein the stirring structure 100 comprises a first-stage stirring mechanism 110 and a second-stage stirring mechanism 120, the first-stage stirring mechanism 110 and the second-stage stirring mechanism 120 are arranged in a communicated manner, the high-efficiency structuring agent, the admixture and water are placed in the first-stage stirring mechanism 110 to be stirred and then flow to the second-stage stirring mechanism 120, and the high-efficiency structuring agent, the admixture and the water are stirred by the second-stage stirring mechanism 120 to; the injection structure 200 includes an injection pipe 210 and an injection pump 230, the injection pump 230 is used for pumping the setting slurry to the injection pipe 210, one end of the injection pipe 210 is connected to the injection pump 230, and the other end of the injection pipe 210 extends to the bottom of the blank pile section 300.
The high-efficiency structural agent, the additive and water are stirred and mixed through the stirring structure 100 to form solidified slurry, the solidified slurry is stirred for multiple times through the first-stage stirring mechanism 110 and the second-stage stirring mechanism 120, the stirring effect is improved, and the solidified slurry is conveyed to the hollow pile section 300 through the injection structure 200 and is combined with waste slurry in the hollow pile section 300 to realize solidification; like this, help consuming produced high water waste mud in the urban construction fast on a large scale, prevent that it from stacking the potential safety hazard that brings for a long time to make its high-efficient resourceization, simultaneously, the empty pile section 300 of full aspect carries out solidification treatment, avoids appearing the weak layer, improves the solidification treatment effect of empty pile section 300, satisfies the demand of ground bearing capacity.
In this embodiment, the primary stirring mechanism 110 includes a primary stirring barrel 111 and a primary stirrer, the primary stirrer includes a primary stirring rod 112 and a plurality of primary stirring blades 113, and the primary stirring rod 112 and the primary stirring blades 113 are disposed inside the primary stirring barrel 111; the first-stage stirring rod 112 is driven by a motor to rotate circumferentially, the inner ends of the first-stage stirring blades 113 are fixedly arranged with the first-stage stirring rod 112, the outer ends of the first-stage stirring blades 113 extend in the direction departing from the first-stage stirring rod 112, and each first-stage stirring blade 113 is spirally arranged around the circumference of the first-stage stirring rod 112; when stirring operation is performed, the first-stage stirring rod 112 rotates to enable the first-stage stirring blades 113 to rotate circumferentially relative to the first-stage stirring rod 112, so that the high-efficiency structural agent, the additive and water in the first-stage stirring barrel 111 are stirred, and the mixing effect of the high-efficiency structural agent, the additive and the water is improved.
Furthermore, the primary stirring barrel 111 is provided with an inner end surface, the inner end surface of the primary stirring barrel 111 is provided with primary cutting blades, the primary cutting blades are spirally arranged in a surrounding manner, and the primary cutting blades and the primary stirring blades 113 are arranged in a spaced and corresponding manner; under the action of the primary cutting blades and the primary stirring blades 113, the collision among the high-efficiency structuring agent, the admixture and water is enhanced, the mixing effect of the high-efficiency structuring agent, the admixture and the water is improved, and the solidified slurry is refined.
The first-stage stirring rods 112 are arranged longitudinally, so that each first-stage stirring sheet 113 has a larger stirring area, and the stirring effect is improved.
The stirring structure 100 comprises a conveying pipe, the second-stage stirring mechanism 120 comprises a second-stage stirring barrel 121, a first-stage output port and a movable plate are formed at the bottom of the first-stage stirring barrel 111, the movable plate is used for opening or sealing the first-stage output port, an input port is formed at the top of the second-stage stirring barrel 121, one end of the conveying pipe is in butt joint with the first-stage output port, and the other end of the conveying pipe is in butt joint with; and the communication between the first-stage stirring barrel 111 and the second-stage stirring barrel 121 is realized.
The conveying pipe is provided with a conveying pump, so that the conveying of the fixed slurry is facilitated.
The first-stage mixing tank 111 and the second-stage mixing tank 121 are arranged up and down correspondingly, and the first-stage output port and the input port are arranged up and down correspondingly, so that the fixed slurry is conveyed conveniently.
The first-stage stirring barrel 111 is provided with a screen which is tiled to cover the first-stage output port; under the effect of screen cloth, avoid stirring in insufficient solidification slurry gets into second grade agitator 121 to and the solidification slurry of large granule gets into second grade agitator 121 in, thereby the stirring effect of the second grade mixer of being convenient for, simultaneously, improve stirring effect.
The second-stage stirring mechanism 120 comprises a second-stage stirring barrel 121 and a second-stage stirrer, the second-stage stirrer comprises a second-stage stirring rod 212 and a plurality of second-stage stirring sheets 213, and the second-stage stirring rod 212 and the second-stage stirring sheets 213 are arranged inside the second-stage stirring barrel 121; the second-stage stirring rod 212 is driven by a motor to rotate circumferentially, the inner ends of the second-stage stirring blades 213 are fixedly arranged with the second-stage stirring rod 212, the outer ends of the second-stage stirring blades 213 extend in the direction departing from the second-stage stirring rod 212, and each second-stage stirring blade 213 is spirally arranged around the circumference of the second-stage stirring rod 212; when stirring operation is performed, the second-stage stirring rod 212 rotates to make the second-stage stirring sheet 213 rotate circumferentially relative to the second-stage stirring rod 212, so that the high-efficiency structural agent, the additive and the water in the second-stage stirring barrel 121 are stirred, and the mixing effect of the high-efficiency structural agent, the additive and the water is improved.
Moreover, the second-stage stirring barrel 121 is provided with an inner end face, the inner end face of the second-stage stirring barrel 121 is provided with second-stage cutting pieces, the second-stage cutting pieces are spirally arranged in a surrounding manner, and the second-stage cutting pieces and each second-stage stirring piece 213 are arranged in a corresponding manner at intervals; under the action of the secondary cutting blades and each secondary stirring blade 213, the collision among the high-efficiency structuring agent, the admixture and water is enhanced, the mixing effect of the high-efficiency structuring agent, the admixture and the water is improved, and the solidified slurry is refined.
The other end of the injection pipe 210 is provided with a plurality of first supporting pieces 250, the plurality of first supporting pieces 250 are arranged at intervals along the circumferential direction of the injection pipe 210, and the bottoms of the first supporting pieces 250 extend to the lower part of the injection pipe 210; thus, under the action of the gravity of the first support plate 250, the other end of the injection pipe 210 can extend to the bottom of the hollow pile section 300 conveniently, and the influence of waste mud on the extension of the other end of the injection pipe 210 to the bottom of the hollow pile section 300 is avoided; in addition, the slurry feeding stability of the injection pipe 210 is enhanced by the plurality of first support sheets 250.
The other end of the high-pressure air pipe 220 is provided with a plurality of second supporting pieces, the second supporting pieces are arranged at intervals in a surrounding manner along the circumferential direction of the high-pressure air pipe 220, and the bottoms of the second supporting pieces extend to the lower part of the high-pressure air pipe 220; thus, under the action of the gravity of the second support plate, the other end of the high-pressure air pipe 220 can extend to the bottom of the hollow pile section 300 conveniently, and the influence of waste mud on the extension of the other end of the high-pressure air pipe 220 to the bottom of the hollow pile section 300 is avoided; in addition, the air delivery stability of the high pressure air duct 220 is enhanced under the action of the plurality of second support pieces.
The second backing sheet includes horizontal section and vertical section, and vertical section is the attached fixed high-pressure tuber pipe 220, and the lower extreme of the vertical section of inner fixed of horizontal section, the outer end of horizontal section deviate from high-pressure tuber pipe 220 direction and are the level and extend and arrange, and like this, when the other end of high-pressure tuber pipe 220 extended to the bottom of empty pile section 300, the bottom of the fixed empty pile section 300 of horizontal section laminating strengthened high-pressure tuber pipe 220's gas transmission stability.
The first support pieces 250 and the second support pieces are fixedly arranged in a butt joint manner, so that the overall weight is enhanced, the slurry conveying stability of the injection pipe 210 is enhanced, and the gas conveying stability of the high-pressure air pipe 220 is enhanced.
The other end of the injection pipe 210 forms a first bending section, the other end of the high-pressure air pipe 220 forms a second bending section, and the directions of the first bending section and the second bending section are opposite, so that the stirring effect is enhanced, and the mixing and curing effect is improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The curing agent for the mud hardening treatment of the hollow pile section is characterized by comprising a high-efficiency structural agent and an additive, wherein the high-efficiency structural agent and the additive are mixed with water to form cured slurry; the efficient structuring agent accounts for 10-20% of the weight of the waste mud, the water accounts for 10-20% of the weight of the waste mud, and the additive accounts for 0.5-1.5% of the weight of the waste mud.
2. The curing agent for the mud hardening treatment of the hollow pile section according to claim 1, wherein the high-efficiency structuring agent is one or a combination of more than one of desulfurized gypsum, fly ash, mineral powder and cement, and the specific surface area of the high-efficiency structuring agent powder is more than or equal to 400m2/kg。
3. The curing agent for the hollow pile section mud hardening treatment according to claim 1, wherein the additive is compounded by one or more of lignosulfonate, naphthalenesulfonate, sulfate, polycarboxylic acid series, alkylbenzene and fatty alcohol in any proportion, and the specific surface area of the additive powder is more than or equal to 350m2/kg。
4. The preparation method of the curing agent for the mud hardening treatment of the hollow pile section comprises the curing agent for the mud hardening treatment of the hollow pile section according to any one of claims 1 to 3, and is characterized in that after the high-efficiency structuring agent is added into a feeding system, the high-efficiency structuring agent is one or more components, the components are sequentially added into the feeding system, stirring is carried out for 10 to 20 minutes, then the admixture is added, and stirring is carried out for 10 minutes to form the cured slurry.
5. The construction method of the curing agent for curing the slurry in the hollow pile section comprises the curing agent for curing the slurry in the hollow pile section as claimed in any one of claims 1 to 3, and is characterized by comprising a grouting pump and an air compressor, wherein the high-efficiency structural agent, the additive and water are subjected to secondary stirring to form the cured slurry, the grouting pump injects the cured slurry into the waste slurry in the hollow pile section, and the high-pressure air generated by the air compressor is synchronously injected into the waste slurry with the cured slurry.
6. The construction method of the curing agent for the mud hardening treatment of the hollow pile section according to claim 5, comprising a primary mixing tank with a primary mixer, a secondary mixing tank with a secondary mixer, an injection pipe and a high-pressure air pipe, and the concrete construction steps are as follows:
(1) after the high-efficiency structuring agent is added into a feeding system, stirring is carried out for 10-20 minutes, then the admixture is added, and stirring is carried out for 10 minutes to form a solidified body;
(2) mixing the solidified body with water, forming the solidified slurry according to the proportion of which the water-cement ratio ranges from 0.8% to 1.2%, placing the solidified slurry in the primary stirring barrel, stirring the solidified slurry by the primary stirring machine, then flowing out of the primary stirring barrel, flowing into the secondary stirring barrel, performing secondary stirring by the secondary stirring machine, and pumping the solidified slurry into the waste slurry in the hollow pile section by the grouting pump;
(3) during grouting, one end of the injection pipe is in butt joint with the grouting pump, the other end of the injection pipe extends to the bottom of the hollow pile section, one end of the high-pressure air pipe is in butt joint with the air compressor, and the other end of the high-pressure air pipe extends to the bottom of the hollow pile section; the solidification slurry warp the grouting pump pours into the bottom to the hollow pile section into, air compressor produces compressed air and passes through the high-pressure air pipe carries the bottom to the hollow pile section, the grouting of grouting pump with air compressor carries compressed air and goes on in step.
(4) And after 1 day of grouting, forming solidified soil by the solidified slurry and the waste slurry.
7. The method for constructing a curing agent for mud hardening of an empty pile section according to claim 6, wherein in the step (2), the cured slurry stirred by the primary stirrer flows into the secondary stirrer after passing through a screen.
8. The construction method of the curing agent for the mud hardening treatment of the hollow pile section according to claim 6, wherein the curing body is packed in a bag, stored in a dry and light-proof environment, and transported to the hollow pile section part where the mud needs to be cured by a forklift when in use.
9. The construction method of the curing agent for the mud hardening of the empty pile section according to claim 6, wherein the empty pile section has an inner wall, a gap is formed between the cured soil and the inner wall of the empty pile section, and after the cured soil is cured for 3 days, broken stones or brick slag are backfilled in the gap and then the ground is compacted and leveled.
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Effective date of registration: 20231122 Address after: B904, Building 2, Shenzhen Bay Science and Technology Ecological Park, No. 1809, Shahe West Road, High tech Zone Community, Yuehai Street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Hongyao Environmental Protection Technology Co.,Ltd. Address before: Room 9b03, 9 / F, block B, building 2, zone 1, Shenzhen Bay science and technology ecological park, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HONGYEJI GEOTECHNICAL TECHNOLOGY Co.,Ltd. |