CN219653743U - Double-deck annular cofferdam of convenient maintenance - Google Patents
Double-deck annular cofferdam of convenient maintenance Download PDFInfo
- Publication number
- CN219653743U CN219653743U CN202320992693.1U CN202320992693U CN219653743U CN 219653743 U CN219653743 U CN 219653743U CN 202320992693 U CN202320992693 U CN 202320992693U CN 219653743 U CN219653743 U CN 219653743U
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- cofferdam
- layer
- protective layer
- main body
- maintenance
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- 238000012423 maintenance Methods 0.000 title claims description 4
- 239000010410 layer Substances 0.000 claims abstract description 62
- 239000011241 protective layer Substances 0.000 claims abstract description 45
- 239000004744 fabric Substances 0.000 claims abstract description 31
- 239000002689 soil Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000010276 construction Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model discloses a double-layer annular cofferdam convenient to maintain, which comprises a cofferdam main body, wherein at least one surface of the cofferdam main body is provided with a first protective layer, the first protective layer consists of a first geotechnical cloth layer and a second protective layer, the first protective layer comprises a concrete slab, the second protective layer comprises a second geotechnical cloth layer and a capping layer, and the cofferdam main body further comprises a second protective layer which comprises a column body and a scour protection net.
Description
Technical Field
The utility model relates to the technical field of hydraulic engineering construction protection, in particular to a double-layer annular cofferdam convenient to maintain.
Background
The cofferdam is a temporary building enclosure which is built for building a permanent water conservancy facility in the construction of the water conservancy project and has the function of preventing water and soil from entering the building position of a building so as to drain water in the cofferdam, excavate a foundation pit and build the building.
The cofferdam constructed in the traditional hydraulic engineering is generally made of soil or concrete, and the cofferdam made of soil is easy to collapse under the scouring of water, so that the construction safety is threatened; the cofferdam made of concrete is firm, but the manufacturing cost is very high, and the cofferdam does not meet the use requirement; the existing cofferdam is a cofferdam which is based on wood piles or steel pipes and filled in a space surrounded by the cofferdam, but the cofferdam can be used for a short time and has a poor protection effect in long-term engineering.
Disclosure of Invention
The utility model aims to provide a double-layer annular cofferdam which is low in cost, convenient to maintain and long in service time, and the technical defects in the technical problems are overcome.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the double-layer annular cofferdam convenient to maintain comprises an annular cofferdam main body; the cofferdam main body is provided with an inner slope surface and an outer slope surface, the outer slope surface is provided with a first protective layer, the first protective layer consists of a first geotechnical cloth layer and a second protective layer, the first protective layer comprises a second geotechnical cloth layer and a concrete plate, the second protective layer comprises a second geotechnical cloth layer and a laminated layer, the first geotechnical cloth layer is laid on the inner slope surface of the cofferdam main body, the concrete plate is laid on the first geotechnical cloth layer, the second geotechnical cloth layer is laid on the concrete plate, and the laminated layer is laid on the second geotechnical cloth layer; the inner side of the cofferdam main body is also provided with a second protective layer, the second protective layer comprises cylinders and anti-impact nets, the cylinders are uniformly distributed on the periphery of the cofferdam main body along the shape of a ring, and the anti-impact nets are arranged between the cylinders.
Further, the first geotechnical cloth layer is laid on one surface of the cofferdam main body, the concrete slab is laid on the first geotechnical cloth layer, the second geotechnical cloth layer is laid on one surface of the concrete slab, and the laminated layer is laid on the second geotechnical cloth layer.
Further, the laminated layer is composed of a plurality of bagged soil, spaces are arranged among the bagged soil, and drainage channels are formed by the spaces among the bagged soil.
Further, the thickness of the concrete slab is 5-15 cm, the concrete slab is provided with a plurality of blocks, and a filler is arranged in a gap between every two concrete slabs, and is a soil material layer or a sand material layer.
Further, the width of the top of the cofferdam main body is smaller than the width of the bottom.
Further, at least a part of the cylinder is inserted into the river bottom, the depth of the cylinder inserted into the river bottom is 60-80 cm, and the anti-impact net is fastened on the cylinder through a steel wire rope.
Further, the anti-impact net is a steel wire net or a nylon net.
Further, the cylinder is wood pile or steel-pipe pile, the cylinder top still is equipped with lighting mechanism, lighting mechanism includes solar panel, solar panel one side is equipped with the light.
The double-layer annular cofferdam convenient to maintain is simple in structure and low in construction cost, is suitable for water conservancy long-term engineering, adopts the double protection layers which are sequentially arranged, can effectively prevent water from penetrating, and when the second protection layer is damaged, the first protection layer still has a good anti-penetrating effect, workers have enough time to maintain and repair the second protection layer, the second protection layer can effectively reduce direct flushing of water flow to the cofferdam main body, and meanwhile, constructors are prevented from losing feet and falling into water, so that the double-layer annular cofferdam has a protection function.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present utility model;
fig. 2 is a top view of an embodiment of the present utility model.
In the figure: 1. a cofferdam main body; 11. a first protective layer; 12. a second protective layer; 2. a first protective layer; 3. a second protective layer; 31. bagging soil; 4. a column; 41. an anti-impact net.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
According to the double-layer annular cofferdam convenient to maintain, which is shown in fig. 1 and 2, the double-layer annular cofferdam convenient to maintain comprises a cofferdam main body 1, at least one surface of the cofferdam main body 1 is provided with a first protective layer 11, the first protective layer 11 consists of a first protective layer 2 and a second protective layer 3, the first protective layer 2 comprises a first geotechnical cloth layer and a concrete slab, the second protective layer 3 comprises a second geotechnical cloth layer and a laminated layer, the cofferdam main body 1 is of an annular structure, and the top width of the cofferdam main body 1 is smaller than the bottom width.
In this embodiment, cofferdam main part 1 wholly is the annular, the middle part of cofferdam main part 1 is the water conservancy facility that needs to build, cofferdam main part 1 mainly has cohesive soil to build, its one side towards water sets up first inoxidizing coating 11, first protective layer 2 sets up on cofferdam main part 1, second protective layer 3 sets up on second protective layer 3, its beneficial effect is, second protective layer 3 is because towards water, it is easy to damage to endure the erosion of rainwater and river course internal water flow for a long time, when second protective layer 3 appears damaging, second protective layer 3 still can provide good anti-seepage effect, can not produce the damage to the cofferdam wholly.
The first geotechnical cloth layer is laid on one surface of the cofferdam main body 1, the concrete slab is laid on the first geotechnical cloth layer, the second geotechnical cloth layer is laid on one surface of the concrete slab, the laminated layer is laid on the second geotechnical cloth layer, the laminated layer is composed of a plurality of bagged soil 31, spaces are arranged between the bagged soil 31, drainage channels are formed between the bagged soil 31, the thickness of the concrete slab is 5-15 cm, the concrete slab is provided with a plurality of blocks, and filler is arranged in a gap between every two concrete slabs and is a soil material layer or a sand material layer.
The second protective layer 3 is composed of a second geotechnical cloth layer and bagged soil 31, the bagged soil 31 is pressed on the second geotechnical cloth layer, the bagged soil 31 is easy to carry, when the second geotechnical cloth layer or the bagged soil 31 is damaged, the bagged soil 31 at the response position can be carried away at any time, and a layer of geotechnical cloth is paved, so that the maintenance is convenient; the first protective layer 2 is composed of concrete slabs and a first geotechnical cloth layer, the protective property is greatly enhanced by the first protective layer 2 and the second protective layer 3 which are overlapped, water penetration is effectively isolated, and meanwhile, the building material of the double-layer annular cofferdam is low in price and easy to obtain, and is beneficial to construction of hydraulic engineering.
As shown in fig. 1 and 2, the cofferdam main body 1 further comprises a second protective layer 12, the second protective layer 12 comprises a plurality of columns 4 and a protective net 41, the columns 4 are uniformly distributed on the periphery of the cofferdam main body along a ring shape, the protective net 41 is arranged between the columns 4, at least one part of the columns 4 is inserted into the river bottom, the depth of the columns 4 inserted into the river bottom is 80 cm, the protective net 41 is fastened on the columns 4 through steel wires, the protective net 41 is a steel wire net or a nylon net, the columns 4 are wood piles or steel pipe piles, the top of each column 4 is further provided with a lighting mechanism, the lighting mechanism comprises a solar panel, and one side of the solar panel is provided with a lighting lamp.
In this embodiment, the second protective layer 12 is located on the water facing side, when the river passes, the flow velocity of water is slowed down through the anti-flushing net 41 at first, the direct flushing of the cofferdam main body 1 by the river is reduced, meanwhile, the second protective layer 12 can also prevent constructors from losing feet and falling into the river, and the lighting lamp is powered by the solar panel and the mains supply for providing lighting vision at night.
Claims (9)
1. The utility model provides a double-deck annular cofferdam of convenient maintenance which characterized in that: comprises a cofferdam main body in a ring shape; the cofferdam main body is provided with an inner slope surface and an outer slope surface, the outer slope surface is provided with a first protective layer, the first protective layer consists of a first geotechnical cloth layer and a second protective layer, the first protective layer comprises a second geotechnical cloth layer and a concrete plate, the second protective layer comprises a second geotechnical cloth layer and a laminated layer, the first geotechnical cloth layer is laid on the inner slope surface of the cofferdam main body, the concrete plate is laid on the first geotechnical cloth layer, the second geotechnical cloth layer is laid on the concrete plate, and the laminated layer is laid on the second geotechnical cloth layer; the inner side of the cofferdam main body is also provided with a second protective layer, the second protective layer comprises cylinders and anti-impact nets, the cylinders are uniformly distributed on the periphery of the cofferdam main body along the shape of a ring, and the anti-impact nets are arranged between the cylinders.
2. The maintenance-friendly double-deck annular cofferdam of claim 1, wherein: the distance between the second protective layer and the cofferdam main body is smaller than 3 meters.
3. The maintenance-friendly double-deck annular cofferdam of claim 2, wherein: the top layer is composed of a plurality of bagged soil, spaces are arranged among the bagged soil, and drainage channels are formed by the spaces among the bagged soil.
4. The maintenance-friendly double-deck annular cofferdam of claim 1, wherein: the thickness of the concrete slab is 5-15 cm, the concrete slab is provided with a plurality of blocks, and a filler is arranged in a gap between every two concrete slabs, and is a soil material layer or a sand material layer.
5. The maintenance-friendly double-deck annular cofferdam of claim 1, wherein: the width of the top of the cofferdam main body is smaller than that of the bottom.
6. The maintenance-friendly double-deck annular cofferdam of claim 1, wherein: at least one part of the cylinder is inserted into the river bottom, the depth of the cylinder inserted into the river bottom is 60-80 cm, and the anti-impact net is fastened on the cylinder through a steel wire rope.
7. The maintenance-friendly double-deck annular cofferdam of claim 6, wherein: the anti-collision net is a steel wire net or a nylon net.
8. The maintenance-friendly double-deck annular cofferdam of claim 1, wherein: the column body is a wood pile or a steel pipe pile, and the top of the column body is also provided with an illumination mechanism.
9. The maintenance-friendly double-deck annular cofferdam of claim 8, wherein: the lighting mechanism comprises a solar panel, and a lighting lamp is arranged on one side of the solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992693.1U CN219653743U (en) | 2023-04-27 | 2023-04-27 | Double-deck annular cofferdam of convenient maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992693.1U CN219653743U (en) | 2023-04-27 | 2023-04-27 | Double-deck annular cofferdam of convenient maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219653743U true CN219653743U (en) | 2023-09-08 |
Family
ID=87875915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320992693.1U Active CN219653743U (en) | 2023-04-27 | 2023-04-27 | Double-deck annular cofferdam of convenient maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219653743U (en) |
-
2023
- 2023-04-27 CN CN202320992693.1U patent/CN219653743U/en active Active
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