CN105569071A - Cement-based material underwater grouting or mud-jack rock block foundation construction method - Google Patents
Cement-based material underwater grouting or mud-jack rock block foundation construction method Download PDFInfo
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- CN105569071A CN105569071A CN201511000060.4A CN201511000060A CN105569071A CN 105569071 A CN105569071 A CN 105569071A CN 201511000060 A CN201511000060 A CN 201511000060A CN 105569071 A CN105569071 A CN 105569071A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- E02D15/06—Placing concrete under water
-
- 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
- E02D15/10—Placing gravel or light material under water inasmuch as not provided for elsewhere
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2111/74—Underwater applications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Revetment (AREA)
Abstract
The invention relates to a cement-based material underwater grouting or mud-jack rock block foundation construction method and belongs to hydraulic cement-based material underwater foundation structure construction methods. A forming gabion is used for forming or the excavation boundary of a foundation serves as the outline, chicken girt concrete with the good fluidity and the high sand ratio is poured into a paving rock block stacked body or gaps of the paving rock block stacked body is filled with the chicken girt concrete by means of the self-leveling performance of the chicken girt concrete underwater, and thus underwater cement-based material grouting rock block or mud-jack rock block structure construction is achieved. The cement-based material underwater grouting or mud-jack rock block foundation construction method has the advantages that when underwater grouting or mud-jack rock block foundation construction is conducted and the water depth is smaller than one meter, construction can be directly carried out without draining water, and thus the construction progress can be greatly accelerated and the construction cost is reduced; when the method is used for reservoir risking obviation and reinforcement construction, the water drainage amount can be greatly reduced, and the construction can be completed on the premise that the effect that water is stored as much as possible is effectively ensured.
Description
Technical field
The invention belongs to hydraulic engineering cement sill underwater foundation construction method.
Background technology
Many hydraulic engineerings are because be difficult to draining, and engineering has to stop work.Such as in recent years, weather anomaly arid, reservoir filling is more difficult, is often all difficult to retaining to reservoir in autumn.But Reservoir carries out dam bank protection must discharge water construction, and have influence on the retaining of reservoir, peasant opposes very much, often do peasant colony expediently and hinder construction, next year kind ground may be had influence on because discharge water.Such as, carry out reservoir dam slope protection construction, basic pin groove excavation is comparatively dark, is difficult to construct because peasant protects water.If a kind of method can be had to realize the subaqueous construction technology not discharging water or discharge water less as far as possible, so, just effectively can solve this kind of contradiction of protecting water and construction, conscientiously make reservoir ensure retaining, the reinforcement of dam can also be completed.On the other hand, northeastward, autumn, water temperature was lower, entered October, and coolant-temperature gage is about 7 ~ 8, and underwater concrete condensation is affected.
Summary of the invention
The invention provides the slip casting under water of a kind of cement-based material or mud jacking block stone foundation construction method, to realize completing cement based basis or filling class formation under water, for hydraulic engineering, can guarantee to carry out hydraulic engineering cement sill structure construction under water, thus significantly reduce minimizing temporary works and effluent cost, significantly improve construction speed, significantly construction costs can be reduced compared with underwater concrete construction, for cement based class formation construction under reservoir water, can guarantee to discharge water less, many retainings, ensure next year irrigation water.Form hole or rapid reinforcement underwater structures for reservoir fast processing because osmotic pressure leaks, significantly can improve programming, guarantee that problem engineering processes in time, guarantee engineering safety.
The technical scheme that the present invention takes comprises the following steps:
(1) hook machine excavation foundation groove is utilized, single operation length 2.5 ~ 3.5 meters;
(2) according to the situation of foundation trench, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
(1) when dug foundation trench is positioned under the water surface, adopt closed structure sizing cage, selection cement-based material under water slip casting method carries out foundation construction:
Described closed structure sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, grout pipe is inserted in gabion, make this grout pipe be positioned on the water surface, after filling up gabion with block stone, non-woven fabrics and the gabion top flat should used suitable for reading is closed;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 ~ 500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 ~ 100 parts,
Medium coarse sand 1000 ~ 3000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 100 ~ 3000 parts,
1000 ~ 2460 parts, water,
Polyacrylamide (amphoteric ion type) 10 ~ 40 parts,
Hydroxyethylcellulose 10 ~ 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 ~ 60 part,
Air entraining agent 0.03 ~ 3 part;
(2) when dug foundation trench is positioned on the water surface, adopt trench structure slip casting sizing cage or trench structure mud jacking sizing cage, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
A () described trench structure slip casting sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, in gabion, insert grout pipe, make this grout pipe be positioned on the water surface, fill up gabion with block stone;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 ~ 500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 ~ 100 parts,
Medium coarse sand 1000 ~ 3000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 100 ~ 3000 parts,
1000 ~ 2460 parts, water,
Polyacrylamide (amphoteric ion type) 10 ~ 40 parts,
Hydroxyethylcellulose 10 ~ 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 ~ 60 part,
Air entraining agent 0.03 ~ 3 part;
B () described trench structure mud jacking sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking;
Mud jacking block stone method: block stone is laid in layering, first lays 20 cm thick block stone bodies, builds self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, make it infiltrate block stone layer inside at interlayer chute or fistulae, accelerates slurry with vibrating spear and sinks; Described self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 ~ 500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram, 20 ~ 100 parts,
Medium coarse sand 1000 ~ 3000 parts,
5 ~ 20 millimeters of particle diameter chicken girts 100 ~ 6000 parts,
1000 ~ 2460 parts, water,
Polyacrylamide (amphoteric ion type) 10 ~ 40 parts,
Hydroxyethylcellulose 10 ~ 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 ~ 60 part,
Air entraining agent 0.03 ~ 3 part,
Crosslinking agent UN-3000 ~ 30 part,
Organobentonite 0 ~ 400 part,
Silicones polyethers emulsion 0 ~ 4 part,
Thick plasticity-maintaining agent falls in low viscosity, and viscosity is in 50 ~ 100cps0 ~ 5 part;
(3) when dug foundation trench is positioned on the water surface, following three kinds of methods are adopted respectively:
A () utilizes the excavation border of foundation trench to be shaping profile, directly lay non-woven fabrics afterwards at excavation, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
(b) in foundation trench, supporting sizing crib, crib external application sandy gravel backfills, and crib liner non-woven fabrics, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
C () is in foundation trench, temporary lining template cage, template cage external application sandy gravel backfills, crib liner non-woven fabrics, afterwards at bottom pendulum paving block stone, build self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete at interlayer chute or fistulae, make it infiltrate block stone layer inside, accelerate slurry with vibrating spear and sink, on pull out removable temporary lining template cage, be thrown into one deck block stone again, repeat above-mentioned steps, until top;
(3) check, after slurry injects, through after a while, if local slurry liquid level sinks, need once to mend slurry more in time.
The present invention utilizes sizing cage excavation border that is shaping or utilization basis to be profile, utilize and inject the higher sand coarse aggregate ratio chicken girt concrete of better mobility to paving block stone accumulation body or pave stone accumulation body gap with its Self-leveling performance filling block under water, realize underwater cement sill slip casting block stone or the construction of mud jacking block stone structure.Material Physics mechanical property is better than stone masonry, is slightly worse than concrete.
Advantage of the present invention is: carry out slip casting under water or mud jacking block stone foundation construction, when the depth of water is lower than one meter, directly can construct without draining, significantly can improve construction speed, reduce construction cost, when for Reservoir construction, significantly can reduce waterdrainage amount, under effectively ensureing as far as possible many retaining prerequisites, complete construction.
Accompanying drawing explanation
Fig. 1 a is the closed structure sizing cage that the present invention adopts, liner non-woven fabrics;
Fig. 1 b is the closed structure sizing cage that the present invention adopts, outsourcing non-woven fabrics;
Fig. 2 a is the trench structure slip casting sizing cage that the present invention adopts, liner non-woven fabrics;
Fig. 2 b is the trench structure slip casting sizing cage that the present invention adopts, outsourcing non-woven fabrics;
Fig. 2 c is the trench structure mud jacking sizing cage that the present invention adopts, liner non-woven fabrics;
Fig. 2 d is the trench structure mud jacking sizing cage that the present invention adopts, outsourcing non-woven fabrics;
Fig. 3 a is mud jacking block stone process chart in case history of the present invention, is paving stone mud jacking schematic diagram in the outer filler cage of cage in figure;
Fig. 3 b is mud jacking block stone process chart in case history of the present invention, is to repeat previous step schematic diagram after upper withdrawing pattern plate cage in figure;
Fig. 3 c is mud jacking block stone process chart in case history of the present invention, is that repetition two, three step is to top schematic diagram in figure;
Fig. 3 d is mud jacking block stone process chart in case history of the present invention, is that adjustment top block stone and concrete bind schematic diagram in figure; In figure:
Closed structure sizing cage 1, non-woven fabrics 2, grout pipe 3, trench structure slip casting sizing cage 4, temporary lining sizing crib 5, sandy gravel 6, pendulum paving block stone 7, low leaching cement based higher sand coarse aggregate ratio chicken girt concrete eight.
Detailed description of the invention
Embodiment 1
Comprise the following steps:
(1) hook machine excavation foundation groove is utilized, single operation length 2.5 ~ 3.5 meters;
(2) according to the situation of foundation trench, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
(1) when dug foundation trench is positioned under the water surface, adopt closed structure sizing cage, selection cement-based material under water slip casting method carries out foundation construction:
Described closed structure sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, grout pipe is inserted in gabion, make this grout pipe be positioned on the water surface, after filling up gabion with block stone, non-woven fabrics and the gabion top flat should used suitable for reading is closed;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 parts,
Medium coarse sand 1000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 100 parts,
1000 parts, water,
Polyacrylamide (amphoteric ion type) 10 parts,
Hydroxyethylcellulose 10 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 part,
Air entraining agent 0.03 part;
(2) when dug foundation trench is positioned on the water surface, adopt trench structure slip casting sizing cage or trench structure mud jacking sizing cage, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
A () described trench structure slip casting sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, in gabion, insert grout pipe, make this grout pipe be positioned on the water surface, fill up gabion with block stone;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 parts,
Medium coarse sand 1000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 100 parts,
1000 parts, water,
Polyacrylamide (amphoteric ion type) 10 parts,
Hydroxyethylcellulose 10 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 part,
Air entraining agent 0.03 part;
B () described trench structure mud jacking sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking;
Mud jacking block stone method: block stone is laid in layering, first lays 20 cm thick block stone bodies, builds self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, make it infiltrate block stone layer inside at interlayer chute or fistulae, accelerates slurry with vibrating spear and sinks; Described self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 parts,
Medium coarse sand 1000 parts,
5 ~ 20 millimeters of particle diameter chicken girts 100 parts,
1000 parts, water,
Polyacrylamide (amphoteric ion type) 10 parts,
Hydroxyethylcellulose 10 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 part,
Air entraining agent 0.03 part,
(3) when dug foundation trench is positioned on the water surface, following three kinds of methods are adopted respectively:
A () utilizes the excavation border of foundation trench to be shaping profile, directly lay non-woven fabrics afterwards at excavation, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
(b) in foundation trench, supporting sizing crib, crib external application sandy gravel backfills, and crib liner non-woven fabrics, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
C () is in foundation trench, temporary lining template cage, template cage external application sandy gravel backfills, crib liner non-woven fabrics, afterwards at bottom pendulum paving block stone, build self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete at interlayer chute or fistulae, make it infiltrate block stone layer inside, accelerate slurry with vibrating spear and sink, on pull out removable temporary lining template cage, be thrown into one deck block stone again, repeat above-mentioned steps, until top;
(3) check, after slurry injects, through after a while, if local slurry liquid level sinks, need once to mend slurry more in time.
Embodiment 2
Comprise the following steps:
(1) hook machine excavation foundation groove is utilized, single operation length 2.5 ~ 3.5 meters;
(2) according to the situation of foundation trench, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
(1) when dug foundation trench is positioned under the water surface, adopt closed structure sizing cage, selection cement-based material under water slip casting method carries out foundation construction:
Described closed structure sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, grout pipe is inserted in gabion, make this grout pipe be positioned on the water surface, after filling up gabion with block stone, non-woven fabrics and the gabion top flat should used suitable for reading is closed;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
275 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 60 parts,
Medium coarse sand 2000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 1550 parts,
1730 parts, water,
Polyacrylamide (amphoteric ion type) 25 parts,
Hydroxyethylcellulose 25 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 32.2 parts,
Air entraining agent 1.51 parts;
(2) when dug foundation trench is positioned on the water surface, adopt trench structure slip casting sizing cage or trench structure mud jacking sizing cage, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
A () described trench structure slip casting sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, in gabion, insert grout pipe, make this grout pipe be positioned on the water surface, fill up gabion with block stone;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
275 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 60 parts,
Medium coarse sand 2000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 1550 parts,
1730 parts, water,
Polyacrylamide (amphoteric ion type) 25 parts,
Hydroxyethylcellulose 25 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 30.2 parts,
Air entraining agent 1.51 parts;
B () described trench structure mud jacking sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking;
Mud jacking block stone method: block stone is laid in layering, first lays 20 cm thick block stone bodies, builds self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, make it infiltrate block stone layer inside at interlayer chute or fistulae, accelerates slurry with vibrating spear and sinks; Described self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
275 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 60 parts,
Medium coarse sand 2000 parts,
5 ~ 20 millimeters of particle diameter chicken girts 3050 parts,
1730 parts, water,
Polyacrylamide (amphoteric ion type) 25 parts,
Hydroxyethylcellulose 25 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 30.2 parts,
Air entraining agent 1.51 parts,
Crosslinking agent UN-30015 part,
Organobentonite 200 parts,
Silicones polyethers emulsion 2 parts,
Thick plasticity-maintaining agent falls in low viscosity, and viscosity is 50 ~ 100cps2.5 part;
(3) when dug foundation trench is positioned on the water surface, following three kinds of methods are adopted respectively:
A () utilizes the excavation border of foundation trench to be shaping profile, directly lay non-woven fabrics afterwards at excavation, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
(b) in foundation trench, supporting sizing crib, crib external application sandy gravel backfills, and crib liner non-woven fabrics, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
C () is in foundation trench, temporary lining template cage, template cage external application sandy gravel backfills, crib liner non-woven fabrics, afterwards at bottom pendulum paving block stone, build self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete at interlayer chute or fistulae, make it infiltrate block stone layer inside, accelerate slurry with vibrating spear and sink, on pull out removable temporary lining template cage, be thrown into one deck block stone again, repeat above-mentioned steps, until top;
(3) check, after slurry injects, through after a while, if local slurry liquid level sinks, need once to mend slurry more in time.
Embodiment 3
Comprise the following steps:
(1) hook machine excavation foundation groove is utilized, single operation length 2.5 ~ 3.5 meters;
(2) according to the situation of foundation trench, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
(1) when dug foundation trench is positioned under the water surface, adopt closed structure sizing cage, selection cement-based material under water slip casting method carries out foundation construction:
Described closed structure sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, grout pipe is inserted in gabion, make this grout pipe be positioned on the water surface, after filling up gabion with block stone, non-woven fabrics and the gabion top flat should used suitable for reading is closed;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 100 parts,
Medium coarse sand 3000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 3000 parts,
2460 parts, water,
Polyacrylamide (amphoteric ion type) 40 parts,
Hydroxyethylcellulose 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 60 parts,
Air entraining agent 3 parts;
(2) when dug foundation trench is positioned on the water surface, adopt trench structure slip casting sizing cage or trench structure mud jacking sizing cage, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
A () described trench structure slip casting sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, in gabion, insert grout pipe, make this grout pipe be positioned on the water surface, fill up gabion with block stone;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, and described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 100 parts,
Medium coarse sand 3000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 3000 parts,
2460 parts, water,
Polyacrylamide (amphoteric ion type) 40 parts,
Hydroxyethylcellulose 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 60 parts,
Air entraining agent 3 parts;
B () described trench structure mud jacking sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking;
Mud jacking block stone method: block stone is laid in layering, first lays 20 cm thick block stone bodies, builds self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, make it infiltrate block stone layer inside at interlayer chute or fistulae, accelerates slurry with vibrating spear and sinks; Described self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 100 parts,
Medium coarse sand 3000 parts,
5 ~ 20 millimeters of particle diameter chicken girts 6000 parts,
2460 parts, water,
Polyacrylamide (amphoteric ion type) 40 parts,
Hydroxyethylcellulose 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 60 parts,
Air entraining agent 3 parts,
Crosslinking agent UN-30030 part,
Organobentonite 400 parts,
Silicones polyethers emulsion 4 parts,
Thick plasticity-maintaining agent falls in low viscosity, and viscosity is 50 ~ 100cps5 part;
(3) when dug foundation trench is positioned on the water surface, following three kinds of methods are adopted respectively:
A () utilizes the excavation border of foundation trench to be shaping profile, directly lay non-woven fabrics afterwards at excavation, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
(b) in foundation trench, supporting sizing crib, crib external application sandy gravel backfills, and crib liner non-woven fabrics, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
C () is in foundation trench, temporary lining template cage, template cage external application sandy gravel backfills, crib liner non-woven fabrics, afterwards at bottom pendulum paving block stone, build self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete at interlayer chute or fistulae, make it infiltrate block stone layer inside, accelerate slurry with vibrating spear and sink, on pull out removable temporary lining template cage, be thrown into one deck block stone again, repeat above-mentioned steps, until top;
(3) check, after slurry injects, through after a while, if local slurry liquid level sinks, need once to mend slurry more in time.
Case history:
Because long-term amount of precipitation is low even without rainfall, certain small reservoir can not store water in 1 year, rainfall in autumn, and reservoir has only stored limited a part of water, when carrying out the dam bank protection basis pin groove construction of Reservoir, reservoir discharges water and is subject to the obstruction of risking one's life of local farmers.Because reservoir does not have water, Second Year peasant soaked field just becomes problem.In this case, finally have employed the construction that the technology of the present invention completes foundation trench.As Fig. 3 a ~ Fig. 3 d, adopt the liner non-woven fabrics gabion of wood lath colligation, adopt mud jacking block stone method to complete construction.
Specific construction engineering method is as follows:
1. utilizing hook machine excavation foundation groove, for reducing the engineering quantity of wall caving, selecting 3 meters of length to be single operation length;
2. work out provisional dismantled and assembled plank cage, liner non-woven fabrics, put water under cage according to construction length and locate, clog permeable material according to the interior height that rockfills at cage two ends, in cage, bottom overlays one deck about 20 centimetres of chunk stones simultaneously.With hydroxyethylcellulose for main material, polyacrylamide is auxiliary material, and mixing low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, sends under water by chute, as Fig. 3 a.
3. adopt vibrator by vibration by after slurry pressed-in block stone accumulation body, above pull out dismantled and assembled template cage, repetition second step, as Fig. 3 b.
4. repeat two, three steps, until top, as Fig. 3 c.
5. suitably adjust top concrete block stone particle diameter, adjust low leaching cement based higher sand coarse aggregate ratio chicken girt concrete chicken girt particle diameter simultaneously, bind.
6. enter operation next time.
Claims (3)
1. cement-based material slip casting under water or a mud jacking block stone foundation construction method, is characterized in that comprising the following steps:
(1) hook machine excavation foundation groove is utilized, single operation length 2.5 ~ 3.5 meters;
(2) according to the situation of foundation trench, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
(1) when dug foundation trench is positioned under the water surface, adopt closed structure sizing cage, selection cement-based material under water slip casting method carries out foundation construction:
Described closed structure sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, grout pipe is inserted in gabion, make this grout pipe be positioned on the water surface, after filling up gabion with block stone, non-woven fabrics and the gabion top flat should used suitable for reading is closed;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete,
(2) when dug foundation trench is positioned on the water surface, adopt trench structure slip casting sizing cage or trench structure mud jacking sizing cage, selection cement-based material under water slip casting method or mud jacking block stone method carries out foundation construction:
A () described trench structure slip casting sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking, in gabion, insert grout pipe, make this grout pipe be positioned on the water surface, fill up gabion with block stone;
Slip casting: inject slurry by grout pump low pressure, this slurry is low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
B () described trench structure mud jacking sizing cage can make under water, also can make by land and then put into water, reinforcing bar, geo-grid or batten steel wire are worked out gabion, for preventing running pulp, gabion external application non-woven wraps or liner non-woven fabrics, the effect of non-woven fabrics is the water of discharging in gabion and prevents cementitious material in gabion from leaking;
Mud jacking block stone method: block stone is laid in layering, first lays 20 cm thick block stone bodies, builds self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete, make it infiltrate block stone layer inside at interlayer chute or fistulae, accelerates slurry with vibrating spear and sinks;
(3) when dug foundation trench is positioned on the water surface, following three kinds of methods are adopted respectively:
A () utilizes the excavation border of foundation trench to be shaping profile, directly lay non-woven fabrics afterwards at excavation, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
(b) in foundation trench, supporting sizing crib, crib external application sandy gravel backfills, and crib liner non-woven fabrics, carries out pipe laying afterwards, then spreads block stone, then carries out slip casting, and slip casting adopts low leaching cement based higher sand coarse aggregate ratio chicken girt concrete;
C () is in foundation trench, temporary lining template cage, template cage external application sandy gravel backfills, crib liner non-woven fabrics, afterwards at bottom pendulum paving block stone, build self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete at interlayer chute or fistulae, make it infiltrate block stone layer inside, accelerate slurry with vibrating spear and sink, on pull out removable temporary lining template cage, be thrown into one deck block stone again, repeat above-mentioned steps, until top;
(3) check, after slurry injects, through after a while, if local slurry liquid level sinks, need once to mend slurry more in time.
2. a kind of cement-based material according to claim 1 slip casting under water or mud jacking block stone foundation construction method, is characterized in that: described low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 ~ 500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram 20 ~ 100 parts,
Medium coarse sand 1000 ~ 3000 parts,
5 ~ 10 millimeters of particle diameter chicken girts 100 ~ 3000 parts,
1000 ~ 2460 parts, water,
Polyacrylamide (amphoteric ion type) 10 ~ 40 parts,
Hydroxyethylcellulose 10 ~ 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 ~ 60 part,
Air entraining agent 0.03 ~ 3 part.
3. a kind of cement-based material according to claim 1 slip casting under water or mud jacking block stone foundation construction method, is characterized in that: described self-compaction low leaching cement based higher sand coarse aggregate ratio chicken girt concrete comprises the raw material of following parts by weight:
General purpose portland cement PO42.51000 part,
50 ~ 500 parts, more than II grade flyash,
Silicon ash, SiO
2content is greater than 90%, specific area 13000 square metres/kilogram ~ 20000 square metres/kilogram, 20 ~ 100 parts,
Medium coarse sand 1000 ~ 3000 parts,
5 ~ 20 millimeters of particle diameter chicken girts 100 ~ 6000 parts,
1000 ~ 2460 parts, water,
Polyacrylamide (amphoteric ion type) 10 ~ 40 parts,
Hydroxyethylcellulose 10 ~ 40 parts,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4 ~ 60 part,
Air entraining agent 0.03 ~ 3 part,
Crosslinking agent UN-3000 ~ 30 part,
Organobentonite 0 ~ 400 part,
Silicones polyethers emulsion 0 ~ 4 part,
Thick plasticity-maintaining agent falls in low viscosity, and viscosity is in 50 ~ 100cps0 ~ 5 part.
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| US20220316170A1 (en) * | 2019-06-17 | 2022-10-06 | Subsea 7 Norway As | Subsea Foundations |
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