CN103835501B - The large-scale concentration basin construction method of assembling combination construction - Google Patents
The large-scale concentration basin construction method of assembling combination construction Download PDFInfo
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- CN103835501B CN103835501B CN201210487934.3A CN201210487934A CN103835501B CN 103835501 B CN103835501 B CN 103835501B CN 201210487934 A CN201210487934 A CN 201210487934A CN 103835501 B CN103835501 B CN 103835501B
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Abstract
The present invention relates to the large-scale concentration basin construction method of a kind of assembling combination construction, it comprises: by concrete panel, point piece combined arc-shaped pool wall steel work and assembly type aluminum arch corrugated plate at produce in factory; The reinforced concrete floor of construction underflow pump chamber Lower Half height, by place for the concrete panel structure installment of underflow pump chamber, then builds the thick concrete of end residual altitude and cast-in-situ steel reinforced concrete top board at the scene; Carry out the construction of pump chamber peripheral backfilling of earthwork; The concrete floor of construction underflow pump chamber outlet vestibule, is assembled into overall arch culvert structure, backfill consolidation in layers arch culvert both sides and top by burst aluminum arch corrugated plate on top; The Lower Half basis ring beam of construction pool wall, be arranged on basic ring beam by the arc steel structure pool wall of burst preprocessing, assembly welding integrally, builds the basic ring beam of residual altitude; To the smooth compacting in pond subsoil side, pool wall has welded rear laying HDPE water resistance gasket.The present invention can shorten construction period, reduces costs.
Description
Technical field
The present invention relates to metallurgical mine project construction, particularly relate to a kind of construction method of concentration basin.
Background technology
Concentration basin, be the visual plant in metallurgical mine project, its main structure body generally comprises: underflow pump chamber, outlet vestibule and concentration basin pond body three part.The design of concentration basin generally adopts reinforced concrete structure, the construction method that burst is built, and needs a large amount of site operation personnel to carry out reinforcing bar binding, formwork and concreting and maintenance work.Especially large-scale concentration basin, concrete work amount is large, and long construction period, cost is higher.
As western Australia SINOIRON iron ore project ore dressing district Tailing thickening pond intended diameter 90 meters (2), former design adopts reinforced concrete structure, design steel concrete amount is 3.45 ten thousand steres, engineering quantity is very huge, estimate in Australia construction period to be 12 ~ 15 months, as the construction period also will more than 8 months at home.According to Australia local conditions, labour cost is abnormal expensive, if according to the design of reinforced concrete structure and construction technology, the construction total cost of 2 diameters, 90 meters of concentration basins will more than 100,000,000 Australian Dollars.Under equal conditions, the domestic construction total cost as construction 2 diameters 90 meters of concentration basins also will more than 6,500 ten thousand RMB.
Summary of the invention
The present invention is intended to solve the problem, and provides a kind of assembling combination construction large-scale concentration basin construction method.The present invention can shorten construction period greatly, and reduces costs.
For solving the problem, the large-scale concentration basin construction method of a kind of assembling combination construction of the present invention, it comprises:
Step one, makes precast concrete panel, point piece combined arc-shaped pool wall steel work and assembly type aluminum arch corrugated plate in factory process according to design drawing, and the complete structural member of making is transported to erecting bed;
Step 2, at the scene by complete for concentration basin excavation of foundation pit, the cast-in-situ steel reinforced concrete base plate of construction underflow pump chamber bottom 1/2 height, utilize hanging device by place for underflow pump chamber concrete panel structure installment prefabricated for burst, then build underflow pump chamber base plate and remain 1/2 thick concrete and cast-in-situ steel reinforced concrete top board; The construction of pump chamber peripheral backfilling of earthwork is carried out after the construction of underflow pump chamber;
Step 3, the cast-in-situ concrete base plate of construction underflow pump chamber outlet vestibule, then hanging device is utilized burst aluminum arch corrugated plate with bolts to be assembled on concrete floor overall arch culvert structure, the then backfill earthwork at backfill consolidation in layers arch culvert both sides and top; Arch culvert both sides uniform stressed to be noted in backfilling process, avoid one-sided stressed generation distortion comparatively greatly;
Step 4, the bottom 1/2 height cast in situ concrete foundation ring beam of construction concentration basin steel work pool wall, utilizes hanging device to be arranged on basic ring beam by the arc steel structure pool wall of burst preprocessing, and adjusts, assembles, is welded into entirety; Then the basic ring beam of residue 1/2 height is built;
Step 5, while steel work pool wall is installed, requires to carry out smooth compacting according to design grade to concentration basin pond subsoil side, lays HDPE water resistance gasket at the bottom of pond after pool wall has welded.
Step 6, installs concentration basin ancillary service.
The large-scale concentration basin construction method of described assembling combination construction, described concentration basin underflow pumping plant employing is cast-in-place to combine with precast reinforced concrete structure, namely the base plate of underflow pumping plant and top board adopt monolithic reinforced concrete structure, and side wall adopts prefabricated reinforced concrete wall panel.
The large-scale concentration basin construction method of described assembling combination construction, described underflow pump chamber outlet vestibule adopts cast in situ concrete foundation, and top is that burst aluminum arch corrugated plate with bolts is assembled into overall arch culvert structure.
The large-scale concentration basin construction method of described assembling combination construction, the pool wall of large-scale concentration basin adopts the arc steel structure pool wall of burst preprocessing, Assembling to become a circular entirety; Steel work pool wall bottom is cast-in-situ steel reinforced concrete basis ring beam.
The large-scale concentration basin construction method of described assembling combination construction, according to the smooth compacted backfill side of design grade construction at the bottom of concentration basin pond, upper berth HDPE water resistance gasket.
Reinforced concrete structure is improved to assembling combination construction by the present invention, and underground, large-scale contracting pond underflow pump chamber adopts the concrete structure of precast concrete panel, cast-in-place base plate and top board; Underflow pump chamber underground outlet vestibule adopts assembly type aluminum corrugated sheet arch culvert structure; Concentration basin pool wall on the ground adopts preprocessing to divide piece combined arc-shaped steel plate structure; Backfill compacting earthwork upper berth HDPE water resistance gasket structure is adopted at the bottom of concentration basin pond.Precast concrete panel, point piece combined arc-shaped pool wall steel work and assembly type aluminum arch corrugated plate all make in factory process, carry out combination and install after being transported to scene.
To the west of Australia Sino project 2 90m diameter concentrators be example, former design steel concrete amount is 3.45 ten thousand steres, and construction cost is more than 100,000,000 Australian Dollars.After adopting assembling combination construction, only need 2700 cubic meter of concrete amounts, 526 tons of steel work and 1.3 ten thousand square metres of HDPE liners, construction cost is reduced to 3,100 ten thousand Australian Dollars; Domestic on year-on-year basis, estimation construction total cost can be reduced to 2,000 ten thousand RMB from 6,500 ten thousand RMB.
The present invention overturns design and the construction technology of reinforced concrete structure concentration basin in the past, reduce the concrete construction volume of field cast-in-place greatly, structure can be carried out in processing factory in advance to make in advance, both the construction period was shortened, site operation intensity can be reduced again, significantly reduce construction costs, reduce environment pollution simultaneously, meet the development trend of energy-conserving and environment-protective.
Detailed description of the invention
Below, with specific embodiment, the present invention is further illustrated:
Concentration basin is normally made up of underflow pump chamber, outlet vestibule and concentration basin pond body three part, and three parts are cast-in-place concrete structure.The present invention is concrete structure concentration basin underground underflow pump chamber being adopted precast concrete panel, cast-in-place base plate and top board; Underflow pump chamber underground outlet vestibule adopts assembly type aluminum corrugated sheet arch culvert structure; Concentration basin pool wall on the ground adopts preprocessing to divide piece combined arc-shaped steel plate structure; Backfill compacting earthwork upper berth HDPE water resistance gasket structure is adopted at the bottom of concentration basin pond.
Precast concrete underflow pump chamber wallboard construction of the present invention
Underflow pump chamber body of wall is highly the tubular construction of 7.45 meters, body of wall and exit position is divided into 17 chip architectures altogether and carries out prefabricated, splice connection structure and installation locating hole time prefabricated in concrete between pre-buried suspension hook, prefabricated panel.
During construction pump chamber base plate, pre-buried diameter 24mm location reinforcing bar, can carry out precise positioning to wallboard, facilitate wallboard lifting construction.Wallboard maximum weight is 24 tons, adopts 150 tons of crawler cranes can meet construction and installation requirement.
After prefabricated panel all installs, adopt connecting elements to carry out splicing between wallboard and connect, and use grouting material to carry out piece grouting.
Outlet vestibule in underground of the present invention adopts assembly type aluminum corrugated sheet arch culvert structure
Pre-buried fixing corrugated aluminum arch culvert effective embedded part during construction outlet vestibule cast-in-situ steel reinforced concrete base plate, because corrugated aluminum arch culvert pipe is that bolt splicing connects, can finely tune in right amount during installation, so namely embedded part installation deviation meets the installation accuracy requirement of corrugated aluminum arch culvert pipe within ± 16mm.
The construction emphasis that the present invention exports vestibule is the joint treatment of pump chamber concrete wall and corrugated aluminum arch culvert pipe junction.Concrete floor seam crossing adopts diameter 30mm polyethylene flexible pipe top to use PU40 silicone filler.Pump chamber concrete wall and the seam of corrugated aluminum arch culvert pipe junction adopt the fixing mode of the thick rubber tile bolt of 12mm to be connected, and avoid backfill to enter.
The present invention's concentration basin pool wall on the ground adopts preprocessing to divide piece combined arc-shaped steel plate structure, and bottom is cast-in-situ steel reinforced concrete basis ring beam.
Consider the installation of arc steel structure pool wall, the present invention needs thick for steel work bottom 520mm concrete ring beam to construct at twice, and first time builds 285mm thickness, and installs control arc steel structure overflow barricade absolute altitude and position support steel structure.After arc steel structure pool wall all installs and completes whole seam welds work, build the thick concrete of basic ring beam residue 235mm.
Backfill compacting earthwork upper berth HDPE water resistance gasket structure is adopted at the bottom of concentration basin pond of the present invention
The installation of HDPE liner is mainly divided into the thick HDPE liner of lower floor 1.0mm, and intermediate layer draining adopts HDPE net, and upper strata is the thick HDPE liner of 2.0mm, and liner connected mode is thermofussion welding.
Consider antiseep requirement, HDPE liner installation difficult point is mainly in HDPE liner lower and the connection of pump chamber concrete wall and the connection of top and steel work pool wall.
Need wide HDPEPOLYLOCK, the HDPE liner of pre-buried 150mm to carry out thermofussion welding with POLYLOCK during pump chamber concrete cast-in-situ top board construction to be connected.
Need inside when steel work pool wall makes to install M16 bolt, spacing is 150mm.Liner boring is through bolt, and top uses 6000mm*50mm*6mm steel work cover plate cover and use fastening nuts.
Claims (5)
1. the large-scale concentration basin construction method of assembling combination construction, is characterized in that: it comprises:
Step one, makes precast concrete panel, point piece combined arc-shaped pool wall steel work and assembly type aluminum arch corrugated plate in factory process according to design drawing, and the complete structural member of making is transported to erecting bed;
Step 2, at the scene by complete for concentration basin excavation of foundation pit, the cast-in-situ steel reinforced concrete base plate of construction underflow pump chamber bottom 1/2 height, utilize hanging device by place for underflow pump chamber concrete panel structure installment prefabricated for burst, then build underflow pump chamber base plate and remain 1/2 thick concrete and cast-in-situ steel reinforced concrete top board; The construction of pump chamber peripheral backfilling of earthwork is carried out after the construction of underflow pump chamber;
Step 3, the cast-in-situ concrete base plate of construction underflow pump chamber outlet vestibule, then hanging device is utilized burst aluminum arch corrugated plate with bolts to be assembled on concrete floor overall arch culvert structure, the then backfill earthwork at backfill consolidation in layers arch culvert both sides and top; Arch culvert both sides uniform stressed to be noted in backfilling process, avoid one-sided stressed generation distortion comparatively greatly;
Step 4, the bottom 1/2 height cast in situ concrete foundation ring beam of construction concentration basin pool wall steel work, utilizes hanging device by the arc pool wall Steel Structure Installation of burst preprocessing on basic ring beam, and adjusts, assembles, is welded into entirety; Then the basic ring beam of residue 1/2 height is built;
Step 5, while steel work pool wall is installed, requires to carry out smooth compacting according to design grade to concentration basin pond subsoil side, lays HDPE water resistance gasket at the bottom of pond after pool wall has welded;
Step 6, installs concentration basin ancillary service.
2. the large-scale concentration basin construction method of assembling combination construction according to claim 1, it is characterized in that, described concentration basin underflow pump chamber employing is cast-in-place to combine with precast reinforced concrete structure, namely the base plate of underflow pump chamber and top board adopt monolithic reinforced concrete structure, and side wall adopts prefabricated reinforced concrete wall panel.
3. the large-scale concentration basin construction method of assembling combination construction according to claim 1, it is characterized in that, described underflow pump chamber outlet vestibule adopts cast in situ concrete foundation, and top is that burst aluminum arch corrugated plate with bolts is assembled into overall arch culvert structure.
4. the large-scale concentration basin construction method of assembling combination construction according to claim 1, is characterized in that, the pool wall of large-scale concentration basin adopts the arc pool wall steel work of burst preprocessing, Assembling to become a circular entirety; Pool wall steel work bottom is cast-in-situ steel reinforced concrete basis ring beam.
5. the large-scale concentration basin construction method of assembling combination construction according to claim 1, is characterized in that, according to the smooth compacted backfill side of design grade construction at the bottom of concentration basin pond, and upper berth HDPE water resistance gasket.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201458940U (en) * | 2009-03-31 | 2010-05-12 | 中国市政工程华北设计研究总院 | Muddy water discharge high-efficient concentration tank |
| CN101967834A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Pulp concentration pool underground base structure with anti-floating function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4213973B2 (en) * | 2003-03-17 | 2009-01-28 | 株式会社石井鐵工所 | Lining structure of concrete storage tank and its construction method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201458940U (en) * | 2009-03-31 | 2010-05-12 | 中国市政工程华北设计研究总院 | Muddy water discharge high-efficient concentration tank |
| CN101967834A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Pulp concentration pool underground base structure with anti-floating function |
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