CN114059654A - Rapid construction method for improved AAO biological pond chamber jumping method of sewage treatment station - Google Patents
Rapid construction method for improved AAO biological pond chamber jumping method of sewage treatment station Download PDFInfo
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- CN114059654A CN114059654A CN202111466976.4A CN202111466976A CN114059654A CN 114059654 A CN114059654 A CN 114059654A CN 202111466976 A CN202111466976 A CN 202111466976A CN 114059654 A CN114059654 A CN 114059654A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F11/00—Cesspools
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- 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
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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
- E02D27/01—Flat foundations
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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
- E02D27/38—Foundations for large tanks, e.g. oil tanks
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0001—Rubbers
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
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- Water Supply & Treatment (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a rapid construction method of an improved AAO biological pond chamber jumping method of a sewage treatment station, which comprises the steps of construction preparation, steel bar binding, installation of a chloroprene rubber waterstop, concrete pouring of a raft plate, installation of a steel bar binding template of a pond wall, concrete pouring of a pond wall, template dismantling and the like. Meanwhile, a chloroprene rubber waterstop is additionally arranged at the construction joint, so that cracks are effectively prevented from being generated in the later stage of the rectangular tank body due to temperature influence after construction, and the risk of sewage leakage is avoided.
Description
The technical field is as follows:
the invention relates to a rapid construction method, in particular to a rapid construction method of an improved AAO biological pond of a sewage treatment station by a skip method.
Background art:
along with the urbanization process and the accelerated development of industry in China, the urban sewage pollution becomes one of the important factors restricting the national development, and sewage treatment plants in various regions are continuously newly built and expanded to respond to the call of national energy conservation and emission reduction. In the sewage treatment structure, the biological tank has a large building area, is easy to crack, and has high later-stage water seepage and maintenance cost. Improper treatment can cause sewage leakage and pollute the underground water source.
Traditional large-scale biological pond adopts to set up flexible post-cast strip, has subdued the crack problem that internal stress release produced, but the inside clearance is troublesome during post-cast strip construction, and construction joint department leaks easily and post-cast strip itself can cause the crack, and final construction effect is not fully satisfactory. In order to solve the problem of ultra-long, ultra-thick and ultra-thin large-volume concrete cracks, the national famous crack control expert 'Wangzheng' iron dream professor proposes and popularizes the construction of a warehouse jump method, the Wangzheng professor proposes the design principle of 'resisting and putting', the warehouse jump method fully utilizes the 'resisting and putting' characteristic principle that the concrete is not stable in performance and is easy to release internal stress before being completely solidified in a period of 5 to 10 days, a building foundation or a large-area concrete plane mechanism is divided into a plurality of areas, and the construction is carried out according to the principle of 'block planning, block construction, layered pouring and integral forming'. The interval time between two adjacent bins is not less than 7 days, so that cracks caused by the violent temperature difference and the drying action of the concrete construction initial stage part are avoided.
The invention improves and innovates the traditional process, applies the skip method to the sewage treatment structure, and innovatively adopts the method combining the skip method and the middle-buried chloroprene rubber waterstop to construct the improved AAO pool, thereby reducing the concrete cracks, shortening the construction period, reducing the construction cost and having good popularization and application values.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the improved AAO biological pond bin-jumping method rapid construction method for the sewage treatment station is innovatively used for construction of the improved AAO pond by combining a bin-jumping method and a middle-buried chloroprene rubber water stop belt, concrete cracks are reduced, the construction period is shortened, and the construction cost is reduced.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a quick construction method of an improved AAO biological pond skip method of a sewage treatment station comprises the following specific steps:
A. construction preparation:
dividing a raft plate of a pool body of a sewage treatment station into rectangular pouring bins with the length not more than 40 m;
determining the construction sequence of the sub-bins according to a skip method;
thirdly, earth excavation, cushion layer construction and separated warehouse paying off are carried out by combining the determined separated warehouse sequence;
fourthly, the pouring time difference between two adjacent bins is larger than 7 d;
B. binding steel bars:
according to the determined bin-dividing pouring sequence, sequentially binding reinforcing steel bars of the raft, releasing reinforcing steel bar positioning lines on the cushion concrete by using ink lines, and binding the reinforcing steel bars according to the reinforcing steel bar positioning lines;
C. installing a chloroprene rubber waterstop at the expansion joint:
firstly, after finishing the binding of the raft plate reinforcing steel bars, firmly fixing the frame vertical bars and the raft plate main reinforcing steel bars;
fixing the low-foaming polyethylene foam plastic plate on the template, and installing the low-foaming polyethylene foam plastic plate and the template at the expansion joint;
fixing the chloroprene rubber waterstop on a low-foaming polyethylene foam plastic plate;
D. pouring concrete on the raft plate:
after the templates are installed, performing concrete pouring, wherein the concrete pouring adopts stepped progressive pouring, the concrete pouring at the lower part of the chloroprene rubber waterstop is firstly completed to ensure that no cavity is formed at the lower part of the waterstop, and then the pouring at the upper part of the chloroprene rubber waterstop is performed;
E. installing a pool wall steel bar binding template:
firstly, processing the expansion joint of the pool wall according to the expansion joint of the bottom plate, and arranging reinforcing steel bars of the pool wall in a quincuncial manner of ∅ 6@ 600;
secondly, setting one cushion block for each 1 m of the concrete protective layer to ensure the thickness of the concrete protective layer;
thirdly, when the template is installed, the distance between the diagonal rods within 2 meters at the lower part is 400mm, and the distance between the diagonal rods above 2m is 450 mm;
fourthly, after the template is installed, the verticality and the line type of the template need to meet the design requirements;
F. pouring concrete on the pool wall:
the height of the pool wall is 7m, the pouring pool wall is poured by adopting the slide pipes, the slide pipes are arranged 2m away from the bottom and 3m apart from the bottom, so that the segregation phenomenon caused by too large fall of concrete pouring is avoided, and the probability of honeycomb pitted surface after pouring is reduced;
G. removing the template:
and (5) after the concrete curing period is over, removing the pool wall concrete formworks, and alternately entering lower-bin concrete rafts and pool walls for construction.
Preferably, in the step B, when the reinforcing steel bars are bound, the position deviation requirement is as follows: the height is not more than +/-5 mm, and the length is not more than +/-10 mm.
Preferably, in the step G, in the process of removing the template, the template is removed after being supported first, and then is removed first and is sequentially removed from top to bottom.
The invention has the following positive beneficial effects:
1. the invention applies the bin jumping method to the sewage treatment structure, and simultaneously innovatively adopts the method of combining the bin jumping method and the buried chloroprene rubber waterstop for the construction of the improved AAO pool, thereby reducing the concrete cracks, shortening the construction period, reducing the construction cost and having good popularization and application values.
2. The expansion joint is provided with the chloroprene rubber waterstop which is surrounded by the poured concrete, so that the water leakage field at the construction joint is reduced, a new crack generated due to temperature difference in the operation process is eliminated, and the expansion joint is suitable for large rectangular pools which are newly built and expanded in water supply and drainage treatment projects and structures with relatively strict requirements on water resistance.
3. The invention fully utilizes the 'resisting and releasing' characteristic principle that the performance of the concrete is not stable in 5 to 10 days and the internal stress is easy to release before the concrete is completely solidified, divides a structure foundation or a large-area concrete plane mechanism into a plurality of areas, and constructs according to the principles of 'block planning, spacer block construction, layered pouring and integral forming'. Meanwhile, a chloroprene rubber waterstop is additionally arranged at the construction joint, so that cracks are effectively prevented from being generated in the later stage of the rectangular tank body due to temperature influence after construction, and the risk of sewage leakage is avoided.
The benefit analysis brought by the invention is as follows:
1. economic benefits are as follows:
and (3) construction period: the warehouse jumping method is applied to the sewage treatment structure, the construction period of the improved AAO pool can be reduced by 30 days, the construction period of the whole project can be shortened, and the management cost can be saved.
Labor cost is saved: due to the shortening of the construction period and the reasonable allocation of manpower, the labor cost of template workers, reinforcing steel bar workers and concrete workers is reduced.
Saving mechanical lease fees: due to the shortening of the construction period, the renting cost of the crane and the transport machinery is reduced.
2. Environmental benefits:
the template and the supporting material can be constructed in a turnover mode, so that the cracking problem in the concrete construction process and the construction later stage is avoided, and the leakage stoppage cost and the risk of groundwater pollution caused by water leakage are reduced.
3. Social benefits are as follows:
by the popularization and application of the invention, the problem that cracks are easy to appear in the large-volume concrete pouring is controlled, the construction period is shortened, and good social benefits are achieved.
Engineering examples of the invention:
project engineering (second period) of sewage treatment plant of horse ditch in Luodao city
The second stage of the project for treating the sewage from the horse ditch in the Luo river is located in the south of Ligang village in the source and the sink of the Luo river, and the project design and extension scale is 5 ten thousand meters3D, building area 8215m of newly-built improved AAO pool2The foundation pit excavation is started on the ground 1 layer at 9/1/2020, the main structure is completed at 1/2/2021, and a 'skip cabin method + buried rubber water stop belt' method is applied in the construction process of the improved AAO pool, so that the construction and design requirements are met, the construction cost is reduced, the method is economic and environment-friendly, and good economic and social benefits are obtained.
Description of the drawings:
FIG. 1 is a schematic view of the binning sequence in example 1.
The specific implementation mode is as follows:
the invention will be further explained and explained with reference to the drawings and the specific embodiments:
embodiment 1, a method for quickly constructing an improved AAO biological pond of a sewage treatment station by a skip method, comprising the following steps:
A. construction preparation:
dividing a raft plate of a pool body of a sewage treatment station into rectangular pouring bins with the length not more than 40 m;
determining the construction sequence of the sub-bins according to a skip method;
thirdly, earth excavation, cushion layer construction and separated warehouse paying off are carried out by combining the determined separated warehouse sequence;
fourthly, the pouring time difference between two adjacent bins is larger than 7 d;
B. binding steel bars:
according to the determined bin-divided pouring sequence, performing 1-1 and 1-2 raft plate steel bar binding in two groups (see figure 1), discharging steel bar positioning lines on the cushion concrete by using ink lines, and performing steel bar binding according to the steel bar positioning lines;
C. installing a chloroprene rubber waterstop at the expansion joint:
firstly, after finishing the binding of the raft plate reinforcing steel bars, firmly fixing the frame vertical bars and the raft plate main reinforcing steel bars;
fixing the low-foaming polyethylene foam plastic plate on the template, and installing the low-foaming polyethylene foam plastic plate and the template at the expansion joint;
fixing the chloroprene rubber waterstop on a low-foaming polyethylene foam plastic plate;
D. pouring concrete on the raft plate:
after the templates are installed, performing concrete pouring, wherein the concrete pouring adopts stepped progressive pouring, the concrete pouring at the lower part of the chloroprene rubber waterstop is firstly completed to ensure that no cavity is formed at the lower part of the waterstop, and then the pouring at the upper part of the chloroprene rubber waterstop is performed;
E. installing a pool wall steel bar binding template:
firstly, processing the expansion joint of the pool wall according to the expansion joint of the bottom plate, and arranging reinforcing steel bars of the pool wall in a quincuncial manner of ∅ 6@ 600;
secondly, setting one cushion block for each 1 m of the concrete protective layer to ensure the thickness of the concrete protective layer;
thirdly, when the template is installed, the distance between the diagonal rods within 2 meters at the lower part is 400mm, and the distance between the diagonal rods above 2m is 450 mm;
fourthly, after the template is installed, the verticality and the line type of the template need to meet the design requirements;
F. pouring concrete on the pool wall:
the height of the pool wall is 7m, the pouring pool wall is poured by adopting the slide pipes, the slide pipes are arranged 2m away from the bottom and 3m apart from the bottom, so that the segregation phenomenon caused by too large fall of concrete pouring is avoided, and the probability of honeycomb pitted surface after pouring is reduced;
G. removing the template:
and (5) after the concrete curing period is over, removing the pool wall concrete formworks, and alternately entering lower-bin concrete rafts and pool walls for construction.
In the step B, during steel bar binding, the position deviation requirement is as follows: the height is not more than +/-5 mm, and the length is not more than +/-10 mm.
In the step G, in the process of removing the template, the template is removed after being supported first, and then is removed first and is sequentially removed from top to bottom.
The construction method of the embodiment 2, the embodiment and the embodiment 1 is basically the same, and the same points are not repeated, except that: and in the step B, performing 1-3 and 1-4 raft plate steel bar binding in two groups according to the determined bin-dividing pouring sequence.
The construction method of the embodiment 3, the embodiment and the embodiment 1 is basically the same, and the same points are not repeated, except that: and in the step B, performing 1-5 and 1-6 raft plate steel bar binding in two groups according to the determined bin-dividing pouring sequence.
The construction method of the embodiment 4, the embodiment and the embodiment 1 is basically the same, and the same points are not repeated, except that: and in the step B, binding reinforcing steel bars of the raft plates in two groups according to the determined bin-divided pouring sequence, and binding the reinforcing steel bars of the raft plates in 2-1 and 2-2 groups.
The construction method of the embodiment 5, the embodiment and the embodiment 1 is basically the same, and the same points are not repeated, except that: and in the step B, binding reinforcing steel bars of the raft plates in two groups according to the determined bin-divided pouring sequence, and binding the reinforcing steel bars of the raft plates in 2-3 and 2-4 groups.
The construction method of the embodiment 6, the embodiment and the embodiment 1 is basically the same, and the same points are not repeated, except that: and in the step B, binding reinforcing steel bars of the raft plates in two groups according to the determined bin-divided pouring sequence, and binding the reinforcing steel bars of the raft plates in 2-5 and 2-6 groups.
In the construction process of the embodiment 1 to the embodiment 6, the pouring time difference between two adjacent bins is more than 7 days.
The invention fully utilizes the 'resisting and releasing' characteristic principle that the performance of the concrete is not stable in 5 to 10 days and the internal stress is easy to release before the concrete is completely solidified, divides a structure foundation or a large-area concrete plane mechanism into a plurality of areas, and constructs according to the principles of 'block planning, spacer block construction, layered pouring and integral forming'. Meanwhile, a chloroprene rubber waterstop is additionally arranged at the construction joint, so that cracks are effectively prevented from being generated in the later stage of the rectangular tank body due to temperature influence after construction, and the risk of sewage leakage is avoided.
The invention applies the bin jumping method to the sewage treatment structure, and simultaneously innovatively adopts the method of combining the bin jumping method and the buried chloroprene rubber waterstop for the construction of the improved AAO pool, thereby reducing the concrete cracks, shortening the construction period, reducing the construction cost and having good popularization and application values.
The invention reduces the water leakage field at the construction joint, eliminates new cracks generated due to temperature difference in the operation process, and is suitable for large rectangular water pools newly built and expanded in water supply and drainage treatment projects and structures with strict requirements on water resistance.
Claims (3)
1. A quick construction method of an improved AAO biological pond skip method of a sewage treatment station comprises the following specific steps:
A. construction preparation:
dividing a raft plate of a pool body of a sewage treatment station into rectangular pouring bins with the length not more than 40 m;
determining the construction sequence of the sub-bins according to a skip method;
thirdly, earth excavation, cushion layer construction and separated warehouse paying off are carried out by combining the determined separated warehouse sequence;
fourthly, the pouring time difference between two adjacent bins is larger than 7 d;
B. binding steel bars:
according to the determined bin-dividing pouring sequence, sequentially binding reinforcing steel bars of the raft, releasing reinforcing steel bar positioning lines on the cushion concrete by using ink lines, and binding the reinforcing steel bars according to the reinforcing steel bar positioning lines;
C. installing a chloroprene rubber waterstop at the expansion joint:
firstly, after finishing the binding of the raft plate reinforcing steel bars, firmly fixing the frame vertical bars and the raft plate main reinforcing steel bars;
fixing the low-foaming polyethylene foam plastic plate on the template, and installing the low-foaming polyethylene foam plastic plate and the template at the expansion joint;
fixing the chloroprene rubber waterstop on a low-foaming polyethylene foam plastic plate;
D. pouring concrete on the raft plate:
after the templates are installed, performing concrete pouring, wherein the concrete pouring adopts stepped progressive pouring, the concrete pouring at the lower part of the chloroprene rubber waterstop is firstly completed to ensure that no cavity is formed at the lower part of the waterstop, and then the pouring at the upper part of the chloroprene rubber waterstop is performed;
E. installing a pool wall steel bar binding template:
firstly, processing the expansion joint of the pool wall according to the expansion joint of the bottom plate, and arranging reinforcing steel bars of the pool wall in a quincuncial manner of ∅ 6@ 600;
secondly, setting one cushion block for each 1 m of the concrete protective layer to ensure the thickness of the concrete protective layer;
thirdly, when the template is installed, the distance between the diagonal rods within 2 meters at the lower part is 400mm, and the distance between the diagonal rods above 2m is 450 mm;
fourthly, after the template is installed, the verticality and the line type of the template need to meet the design requirements;
F. pouring concrete on the pool wall:
the height of the pool wall is 7m, the pouring pool wall is poured by adopting the slide pipes, the slide pipes are arranged 2m away from the bottom and 3m apart from the bottom, so that the segregation phenomenon caused by too large fall of concrete pouring is avoided, and the probability of honeycomb pitted surface after pouring is reduced;
G. removing the template:
and (5) after the concrete curing period is over, removing the pool wall concrete formworks, and alternately entering lower-bin concrete rafts and pool walls for construction.
2. The improved AAO biological pool skip method rapid construction method of the sewage treatment station as claimed in claim 1, characterized in that: in the step B, during steel bar binding, the position deviation requirement is as follows: the height is not more than +/-5 mm, and the length is not more than +/-10 mm.
3. The improved AAO biological pool skip method rapid construction method of the sewage treatment station as claimed in claim 1, characterized in that: in the step G, in the process of removing the template, the template is removed after being supported first, and then is removed first and is sequentially removed from top to bottom.
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| CN202111466976.4A CN114059654A (en) | 2021-12-03 | 2021-12-03 | Rapid construction method for improved AAO biological pond chamber jumping method of sewage treatment station |
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| CN202111466976.4A CN114059654A (en) | 2021-12-03 | 2021-12-03 | Rapid construction method for improved AAO biological pond chamber jumping method of sewage treatment station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961263A (en) * | 2022-05-29 | 2022-08-30 | 中国五冶集团有限公司 | Large-area concrete skip construction method |
| CN115142722A (en) * | 2022-06-10 | 2022-10-04 | 河南沃克曼建设工程有限公司 | Accurate positioning and rapid construction method for circular pool template of large sewage treatment plant |
| CN115897589A (en) * | 2022-10-31 | 2023-04-04 | 中铁一局集团市政环保工程有限公司 | Waterproof concrete interval pouring construction method for buried sewage treatment plant |
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| CN110409600A (en) * | 2019-08-06 | 2019-11-05 | 中化二建集团有限公司 | Unit-combination type cesspool construction method |
| CN111424707A (en) * | 2020-04-07 | 2020-07-17 | 中建三局集团有限公司 | Core tube mixed structure overlong basement skip construction method |
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| CN1455054A (en) * | 2003-05-08 | 2003-11-12 | 中国第二十冶金建设公司 | Ordinary concrete block bunker-jump casting crack control method |
| WO2014139252A1 (en) * | 2013-03-15 | 2014-09-18 | 中国十七冶集团有限公司 | Method for constructing large raft foundation in high-temperature environment |
| CN106638544A (en) * | 2016-12-26 | 2017-05-10 | 中冶天工集团有限公司 | Anti-seepage and anti-cracking construction method for ultra-large reinforced concrete bio-oxidation pond in cold area |
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| CN111424707A (en) * | 2020-04-07 | 2020-07-17 | 中建三局集团有限公司 | Core tube mixed structure overlong basement skip construction method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961263A (en) * | 2022-05-29 | 2022-08-30 | 中国五冶集团有限公司 | Large-area concrete skip construction method |
| CN115142722A (en) * | 2022-06-10 | 2022-10-04 | 河南沃克曼建设工程有限公司 | Accurate positioning and rapid construction method for circular pool template of large sewage treatment plant |
| CN115142722B (en) * | 2022-06-10 | 2024-04-05 | 河南沃克曼建设工程有限公司 | Precise positioning and rapid construction method for circular pool template of large sewage treatment plant |
| CN115897589A (en) * | 2022-10-31 | 2023-04-04 | 中铁一局集团市政环保工程有限公司 | Waterproof concrete interval pouring construction method for buried sewage treatment plant |
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