CN220202602U - Anti-consolidation sedimentation type mixing dam - Google Patents
Anti-consolidation sedimentation type mixing dam Download PDFInfo
- Publication number
- CN220202602U CN220202602U CN202321699769.8U CN202321699769U CN220202602U CN 220202602 U CN220202602 U CN 220202602U CN 202321699769 U CN202321699769 U CN 202321699769U CN 220202602 U CN220202602 U CN 220202602U
- Authority
- CN
- China
- Prior art keywords
- dam
- upstream
- downstream
- cantilever arm
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007596 consolidation process Methods 0.000 title claims abstract description 17
- 238000004062 sedimentation Methods 0.000 title claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 39
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 15
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000003864 humus Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses an anti-consolidation settlement type mixing dam which consists of a concrete dam and a soil-rock dam positioned at the upper and lower streams of the concrete dam, wherein the top surface of the concrete dam is higher than the soil-rock dam, an upstream cantilever arm extending upwards and a downstream cantilever arm extending downwards are arranged at the top of the concrete dam, a wave wall is arranged at the end part of the upstream cantilever arm, wave-eliminating anti-arc blocks are arranged at the outer side of the wave wall, an upstream ecological flower pool and a dam top street lamp are arranged at the top of the wave wall, a cable trench is arranged at the inner side of the wave wall, a curb and a downstream ecological flower pool are arranged at the end part of the downstream cantilever arm, a dam top pavement is arranged between the cable trench and the curb, and a pre-buried drain pipe communicated with the cable trench and the downstream ecological flower pool is arranged below the dam top pavement. The utility model can avoid the problem of stress deformation caused by the connection of two different materials of the dam crest road foundation, avoid the occurrence of longitudinal settlement joint of the dam crest road foundation and ensure the safety of the dam body.
Description
Technical Field
The utility model relates to the technical field of hydraulic engineering construction, in particular to an anti-consolidation sedimentation type mixing dam.
Background
Due to the limitation of the topography and geological conditions, more and more reservoir projects adopt the total arrangement scheme of the mixing dams, and most of the conventional mixing dam joint parts are the structure types of concrete dams wrapped with earth and stone dams. The concrete dam generally adopts a gravity type section, and in order to meet the requirements of flood prevention and traffic of the dam crest, the width of the dam crest is generally 6-8 m, and the integral investment is higher due to the larger section area of the concrete gravity dam. Therefore, some projects consider flood control traffic and investment in a mode of reducing the width of the dam crest of the gravity dam and increasing the width of the dam crest by using the externally-covered earth-rock dam, however, due to different materials of the dam body combination part, different permeability coefficients and different elastic moduli, the consolidation settlement amounts of different parts of the dam crest after construction are different, so that longitudinal settlement joints appear on the dam crest, and potential safety hazards are caused.
Disclosure of Invention
In order to solve the problems, the utility model provides an anti-consolidation sedimentation mixing dam with low cost and good quality, which concretely adopts the following technical scheme:
the utility model discloses an anti-consolidation settlement type mixing dam which consists of a concrete dam and earth-rock dams positioned at the upper and lower streams of the concrete dam, wherein the top surface of the concrete dam is higher than the earth-rock dam, an upstream cantilever arm extending upwards and a downstream cantilever arm extending downwards are arranged at the top of the concrete dam, a wave wall is arranged at the end part of the upstream cantilever arm, wave-dissipating anti-arc blocks are arranged at the outer side of the wave wall, an upstream ecological flower pond and a dam top street lamp are arranged at the top of the wave wall, a cable trench is arranged at the inner side of the wave wall, a curb and a downstream ecological flower pond are arranged at the end part of the downstream cantilever arm, a dam top pavement is arranged between the cable trench and the curb, and an embedded drain pipe communicated with the cable trench and the downstream ecological flower pond is arranged below the dam top pavement.
The upstream cantilever arm and the downstream cantilever arm are symmetrically arranged, the sum of the widths of the upstream cantilever arm and the downstream cantilever arm is half of the width of the dam top of the concrete dam, and the heights of the upstream cantilever arm and the downstream cantilever arm are two times of the cantilever height.
The wave wall is higher than the top surface of the upstream cantilever arm by 1.2m, the wave-eliminating anti-arc block is arranged at the top of the outer side of the wave wall, and the bottom surface of the wave-eliminating anti-arc block is a quarter elliptic curve cambered surface section.
The ecological flower ponds of upstream set up in segmentation, set up between the ecological flower ponds of adjacent upstream the dam crest street lamp, every 30m of dam crest street lamp sets up one, mixes the intraductal threading pipe that sets up of dam, the cable of dam crest street lamp passes through the threading pipe extends to be led to in the cable pit.
The top surfaces of the curb and the downstream ecological flower tanks are higher than the dam crest pavement by 0.1 m.
The dam crest pavement is obliquely downwards arranged from the upstream side to the downstream side at a gradient of 2%.
The anti-consolidation settlement type mixing dam provided by the utility model is formed by combining a concrete dam and a earth-rock dam, wherein the concrete dam is of a T-shaped section structure, and the earth-rock dam is respectively arranged on the upstream side and the downstream side of the concrete dam, so that the dam top of the mixing dam is made of a single material, the problem of stress deformation caused by connection of two different materials on a road foundation of the dam top is avoided, the longitudinal settlement joint of the road foundation of the dam top is avoided, the safety of the dam body is ensured, meanwhile, the concrete dam of the T-shaped section structure can meet the wider traffic demand of the dam top, and the combination mode of the concrete dam and the earth-rock dam can better reduce investment cost, thereby saving cost and maintaining good economic benefit.
Compared with the prior art, the utility model has the following advantages:
1. prevent dam tops from generating settlement cracks
The T-shaped double-cantilever dam crest structure is adopted, so that the same material is adopted for the dam crest structure, and the occurrence of settlement cracks of the combined part of the mixed dam crest due to different materials and different consolidation settlement amounts of the two dams is avoided.
2. Reducing the section of the dam body and saving the investment
The T-shaped double-cantilever dam crest structure is adopted, so that the structural section of the concrete gravity dam is effectively reduced while the width of the dam crest is ensured, the structural body type of the insertion section is optimized, and the investment is saved.
3. Optimizing upstream wave wall and downstream curb, safety, ecology and beautiful appearance
The wave elimination and arc reflection are arranged at the upstream of the wave wall, so that the wave climbing is reduced; the ecological flower tanks and the street lamp foundations are arranged at the tops of the wave walls, so that the street lamp is practical and attractive; the cable trench is arranged in the lower part of the wave wall, so that the maintenance is convenient; the downstream curb is provided with an ecological flower pool, so that the ecological environment is safe.
4. Adopts staged backfilling to improve the construction quality
In combination with the T-shaped double-cantilever dam top structure, a construction scheme of backfilling and shaping soil molds in stages is provided for the construction of the outer wrapping soil-rock dam structure, a construction method of a joint between two dam materials is optimized, and construction quality is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 a-4 h are schematic views of the construction steps of the present utility model.
Detailed Description
The following describes embodiments of the present utility model in detail with reference to the accompanying drawings, and the embodiments and specific working procedures of the present utility model are given by implementing the present embodiment on the premise of the technical solution of the present utility model, but the protection scope of the present utility model is not limited to the following embodiments.
As shown in fig. 1 to 3, the anti-consolidation settlement type mixing dam according to the present utility model is composed of a concrete dam 1 at the center and earth and stone dams 2 wrapped at both upstream and downstream sides thereof. The cross section of the concrete dam 1 is of a T-shaped structure which is bilaterally symmetrical, and the top surface of the concrete dam is higher than the earth-rock dam 2, so that the top surface width of the concrete dam 1 is the width of the dam top of the whole dam body, and the dam top of the whole dam body is made of only one concrete material, so that the occurrence of sedimentation cracks of the dam body can be avoided. The width of the dam top of the concrete dam 1 is 8m, wherein the main body part in the middle is 4m wide, and two sides of the main body are respectively overhanging outwards, namely, the main body extends upwards for 2m to form an upstream overhanging arm, and extends downwards for 2m to form a downstream overhanging arm. The height of the upstream cantilever arm and the downstream cantilever arm is 0.8 m, and the cantilever height is 0.4m, namely the height of the cantilever arm is twice the cantilever height.
In order to prevent waves from crossing the dam crest, the end part of the upstream cantilever arm is provided with a wave wall 3 which plays roles in preventing waves, flood and water. The height of the reinforced concrete structure wave wall 3 which is arranged on the dam crest and is stable, firm, waterproof and integrally connected with the dam body is generally 1.2m, so that the sight of people is not blocked, the dam crest elevation can be reduced, and the construction work amount of the dam is saved. Further, the wave-eliminating anti-arc block 4 is arranged on the outer side of the top of the wave wall 3, so that the wave climbing can be reduced by utilizing the structural radian, the phenomenon that the waves are jammed and overturned over the dam crest under the condition of high water level and high wind speed is avoided, and the water mist and water vapor generated by the fact that the waves directly impact the wave wall are effectively reduced. The bottom surface of the wave-eliminating anti-arc block 4 is a quarter elliptic curve cambered surface section, and the curve accords with。
The wave-eliminating anti-arc block 4 is positioned on the outer side of the top of the wave wall 3, so that the width of the top of the wave wall 3 can be further increased, and the protection safety is improved. In the embodiment, the tops of the wave wall 3 and the wave-eliminating and arc-reflecting block 4 can be provided with an upstream ecological flower pool 5 and a dam crest street lamp. Wherein, the upstream ecological flower pond 5 is filled with humus soil and pre-buried drain pipes, and the landscaping effect of the dam crest is increased by planting some landscaping wave walls. Under normal conditions, the upstream ecological flower pond 5 is cut off every 30m, street lamp foundation embedded parts are embedded in the dam crest, the embedded threading pipe in the lower wave wall 3 is internally connected with a street lamp power supply from the cable trench 6, the street lamp foundation does not occupy the road surface of the dam crest any more, the effective width of the road surface of the dam crest is increased, meanwhile, the power supply is directly connected from the lower cable trench 6, the electric wires are prevented from traversing the dam crest, and the post operation and maintenance are convenient.
The cable trench 6 is positioned on the inner side of the wave wall 3, is internally provided with a cable bridge, is convenient to overhaul and maintain, and the upper part of the cable bridge is provided with a cover plate which can be used as a manway of a dam crest, so that the effective width of the dam crest is not occupied, the bottom of the cable trench 6 is provided with a drainage trench which is communicated with an embedded drainage pipe 7 arranged in the dam body, and catchments in the trench are led to be discharged to the downstream dam slope.
The end of the downstream cantilever arm is provided with a curb and a downstream ecological flower pond 8, a dam crest pavement 9 which is arranged downwards from the upstream side to the downstream side in a slope of 2% is arranged between the cable trench 6 and the curb, and the embedded drain pipe 7 is positioned below the dam crest pavement 9 and is communicated with the cable trench 6 and the downstream ecological flower pond 8.
The main effect of the downstream curb of the dam crest is to isolate the structure of the road surface 9 of the dam crest from the downstream dam body, keep the edge of the road surface 9 of the dam crest neat and beautiful, play a certain warning role at the same time, avoid pedestrians to step on the downstream dam slope, most of the current projects adopt precast concrete curb, and the road surface structure of the dam crest is 0.2-0.3 m higher than the road surface structure of the dam crest after laying, but the road surface is not attractive enough, influence the drainage of the road surface of the dam crest and have certain potential safety hazards.
In this embodiment, widen the curb to 0.74m, set up the ecological flower pond 8 of low reaches simultaneously, fill out humus and pre-buried drain pipe, beautify the dam crest through planting some landscape plants, when playing the isolation effect to dam crest road surface 9 structure, reduce the pedestrian and trample the possibility that the low reaches dam slope carelessly slipped, combine the dam crest road surface 9 structure to reduce its height to more than the road surface structure and be less than 0.1m, basically flush, reserve the drainage export every 30m, link to each other with low reaches dam slope escape canal, increase the security and the view effect of dam crest when not influencing the dam crest drainage.
The anti-consolidation sedimentation mixing dam disclosed by the utility model is constructed according to the following steps:
1) According to the conventional construction sequence, the concrete pouring of the dam body below the dam crest and the filling of the corresponding earth-rock dam structure are completed, and the dam crest structure dowel bars are reserved at the top of the dam body, as shown in fig. 4a;
2) Filling the core wall to the dam crest elevation according to the material index and filling standard of the design requirement, as shown in fig. 4b;
3) Partially excavating the core wall filled in the step 2) according to a dam crest structure, namely, the profile surface after the excavation operation is completed is matched with the lower surfaces of the upstream cantilever arm and the downstream cantilever arm of the concrete dam 1, as shown in fig. 4c;
4) The top of the core wall excavated in the step 3) is coated with slurry to serve as a lower soil template, a reserved dowel bar is combined with a dam top, a T-shaped double-cantilever dam top structure is poured, grouting holes are pre-embedded in an upstream cantilever arm and a downstream cantilever arm on two sides, a wave wall dowel bar, a cable trench structure and a pre-embedded drain pipe are reserved on the top side of the upstream cantilever arm, and an ecological flower pond is reserved on the top of the downstream cantilever arm, as shown in fig. 4d;
5) After the dam top structure is disassembled and maintained to reach the design age, filling the rest part of the outer-wrapped earth-rock dam structure is completed, as shown in fig. 4e;
6) Grouting the contact part of the concrete dam 1 and the earth-rock dam 2 by using the pre-buried grouting pipe, and plugging the pre-buried grouting pipe after grouting is finished, as shown in fig. 4f;
7) Completing wave elimination and arc reflection at the upper part of the wave wall and pouring of ecological flower ponds (foundations such as roads and the like), as shown in fig. 4g;
8) And the construction of ecological flower pond humus soil paving, street lamp installation, pavement structure and the like is completed, as shown in fig. 4h.
It should be noted that, in the description of the present utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Claims (6)
1. An anti-consolidation sedimentation type mixing dam is characterized in that: the mixing dam comprises a concrete dam and a soil-rock dam positioned at the upstream and downstream of the concrete dam, the top surface of the concrete dam is higher than the soil-rock dam, an upstream cantilever arm extending towards the upstream and a downstream cantilever arm extending towards the downstream are arranged at the top of the concrete dam, a wave wall is arranged at the end part of the upstream cantilever arm, a wave-eliminating anti-arc block is arranged at the outer side of the wave wall, an upstream ecological flower pool and a dam top street lamp are arranged at the top of the wave wall, a cable trench is arranged at the inner side of the wave wall, a curb and a downstream ecological flower pool are arranged at the end part of the downstream cantilever arm, a dam top road surface is arranged between the cable trench and the curb, and a pre-buried drain pipe communicated with the cable trench and the downstream ecological flower pool is arranged below the dam top road surface.
2. The anti-consolidation settlement mixing dam of claim 1 wherein: the upstream cantilever arm and the downstream cantilever arm are symmetrically arranged, the sum of the widths of the upstream cantilever arm and the downstream cantilever arm is half of the width of the dam top of the concrete dam, and the heights of the upstream cantilever arm and the downstream cantilever arm are two times of the cantilever height.
3. The anti-consolidation settlement mixing dam of claim 1 wherein: the wave wall is higher than the top surface of the upstream cantilever arm by 1.2m, the wave-eliminating anti-arc block is arranged at the top of the outer side of the wave wall, and the bottom surface of the wave-eliminating anti-arc block is a quarter elliptic curve cambered surface section.
4. The anti-consolidation settlement mixing dam of claim 1 wherein: the ecological flower ponds of upstream set up in segmentation, set up between the ecological flower ponds of adjacent upstream the dam crest street lamp, every 30m of dam crest street lamp sets up one, mixes the intraductal threading pipe that sets up of dam, the cable of dam crest street lamp passes through the threading pipe extends to be led to in the cable pit.
5. The anti-consolidation settlement mixing dam of claim 1 wherein: the top surfaces of the curb and the downstream ecological flower tanks are higher than the dam crest pavement by 0.1 m.
6. The anti-consolidation settlement mixing dam of claim 1 wherein: the dam crest pavement is obliquely downwards arranged from the upstream side to the downstream side at a gradient of 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699769.8U CN220202602U (en) | 2023-06-30 | 2023-06-30 | Anti-consolidation sedimentation type mixing dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699769.8U CN220202602U (en) | 2023-06-30 | 2023-06-30 | Anti-consolidation sedimentation type mixing dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220202602U true CN220202602U (en) | 2023-12-19 |
Family
ID=89148893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321699769.8U Active CN220202602U (en) | 2023-06-30 | 2023-06-30 | Anti-consolidation sedimentation type mixing dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220202602U (en) |
-
2023
- 2023-06-30 CN CN202321699769.8U patent/CN220202602U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202718138U (en) | Self-locking type ecological retaining wall structure | |
| CN207619930U (en) | A kind of high stable state ecoscape protective slope structure | |
| CN210216254U (en) | Concrete guardrail structure | |
| CN113215995B (en) | Method for constructing bridge road in narrow space | |
| CN210002352U (en) | novel dam crest landscape wave wall structure | |
| CN205116094U (en) | A ecological brick of bank protection for reducing side slope soil erosion and water loss | |
| CN220202602U (en) | Anti-consolidation sedimentation type mixing dam | |
| CN109252470A (en) | A kind of expressway greening isolation strip and its construction method | |
| CN109944215B (en) | Wave-eliminating slope protection structure for earth-rock dam reinforcement engineering | |
| CN202440766U (en) | Water-drainage open cut tunnel aqueduct of road cut section | |
| CN107858998A (en) | A kind of barricade and construction method applied to engineering flood bank reinforcing of passing the flood period | |
| CN116607473A (en) | Construction method of hybrid dam with T-shaped double-cantilever dam top structure | |
| CN210066645U (en) | Cement prefabricated plate for slope protection | |
| CN108677980A (en) | A kind of upstream cofferdam that taking into account communication function increases method and structure | |
| CN214883385U (en) | Ecological revetment structure of urban mountain river course | |
| CN215857496U (en) | Hydraulic engineering tiled multi-face-shaped slope protection brick | |
| CN210031683U (en) | Earth and rockfill dam reinforcement engineering wave dissipation slope protection structure | |
| CN203716160U (en) | Prefabricated concrete hollow framework slope protection structure | |
| CN210134438U (en) | Seasonal river soaks embankment side slope protective structure | |
| CN112359777A (en) | Ecological revetment structure of urban mountain river course | |
| CN208718674U (en) | A kind of tunnel Oil pipeline of largest doline or karst funnel | |
| CN206768738U (en) | A kind of suspension type anti-scour wall protective slope structure | |
| CN215052633U (en) | Pile box type retaining wall for slope protection | |
| CN218667400U (en) | Multifunctional submerged dam structure | |
| CN110761246A (en) | Ecological bank protection system combined with landscape greening and arrangement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |