CN107152009B - High and cold region earth and rockfill dam slope protection anti-icing push structure and construction method thereof - Google Patents
High and cold region earth and rockfill dam slope protection anti-icing push structure and construction method thereof Download PDFInfo
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- CN107152009B CN107152009B CN201710306276.6A CN201710306276A CN107152009B CN 107152009 B CN107152009 B CN 107152009B CN 201710306276 A CN201710306276 A CN 201710306276A CN 107152009 B CN107152009 B CN 107152009B
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 55
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 23
- 230000002265 prevention Effects 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000004575 stone Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
- E02B1/003—Mechanically induced gas or liquid streams in seas, lakes or water-courses for forming weirs or breakwaters; making or keeping water surfaces free from ice, aerating or circulating water, e.g. screens of air-bubbles against sludge formation or salt water entry, pump-assisted water circulation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
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Abstract
The invention provides an anti-icing push structure for a slope protection of an earth-rock dam in a high and cold region, which is characterized in that three anti-icing push structures, a solar control system and a wind control system are arranged along a dam slope at the upstream of a dam body, wherein the three anti-icing push structures are respectively a cast-in-place concrete structure paved at the bottom and the top of the dam, a reinforced concrete wall body poured at the slope of the dam and an anti-icing push structure poured at the slope of the dam, reinforcing steel bars are embedded at the top of the reinforced concrete wall body, a novel heating material is fixedly arranged on the surface of the top of the reinforced concrete wall body, the anti-icing push structure is of a reinforced concrete structure, and the solar control system and the wind control system are in an exchange type working mode. The invention has the beneficial effects that: the invention achieves the frost heaving prevention effect by utilizing different structural forms, frost heaving prevention concrete and heating structures, and has the characteristics of strong ice pushing and pulling prevention capability, good frost heaving prevention effect and the like compared with the conventional frost heaving prevention structure of the earth-rock dam. The invention also provides a construction method of the ice pushing preventing structure for the slope protection of the earth-rock dam in the alpine region.
Description
Technical Field
The invention relates to the field of hydraulic and electrical engineering, in particular to an anti-icing push structure for a slope protection of an earth and rockfill dam in a high and cold area and a construction method thereof.
Background
Frost heaving damage of earth and rockfill dam revetment is a common problem in hydraulic engineering in high and cold regions. The earth and rock dam protection slope can generate frost heaving deformation and ice-pulling damage under the action of negative temperature in winter, the temperature rises in spring to melt the slope to generate thaw deformation, ice thrust is generated under the action of wind waves in spring, and the earth and rock dam protection slope can generate damage under the action of repeated freeze thawing, ice thrust and wind waves.
In the prior art, the seepage-proofing and frost heaving-preventing structure is single, the frost heaving-preventing effect is poor, and the earth-rock dam slope protection is damaged through repeated freezing and thawing, frost heaving, ice pushing and ice pulling. The problem of frost heaving prevention is not solved essentially, and after the earth and rockfill dam protection slope is subjected to several freeze-thaw cycles and freezing damage, frost heaving damage is generated on the earth and rockfill dam protection slope, so that the operation benefit of a reservoir is influenced, and the maintenance cost is increased.
Disclosure of Invention
The invention overcomes the defects in the prior art, and one of the purposes of the invention is to provide the earth-rock dam slope protection structure in the high and cold region, the existing earth-rock dam slope protection frost heaving prevention form and the new earth-rock dam slope frost heaving prevention structural form are compared and tested, and the test result shows that the earth-rock dam slope protection frost heaving prevention effect is obvious, and the advantages of dam body filling frost heaving, ice pulling, slope protection frost heaving prevention and the like are inhibited by utilizing clean solar energy and wind energy. The second purpose of the invention is to provide a construction method of the slope protection structure of the earth-rock dam in the cold region.
The purpose of the invention is realized by the following technical scheme.
The three frost heaving prevention structures are respectively a cast-in-place concrete structure paved at the bottom and the top of the dam, a reinforced concrete wall body poured at the dam slope and an ice pushing prevention structure poured at the dam slope, the reinforced concrete wall body and the ice pushing prevention structure are positioned in an ice accumulation area of the winter water storage position of the reservoir corresponding to the dam slope, and the solar control system and the wind control system are positioned on the upstream side of the dam top of the dam.
Furthermore, steel bars are embedded in the top of the reinforced concrete wall body, and a heating material is fixedly arranged on the surface of the top of the reinforced concrete wall body.
Furthermore, the reinforced concrete wall has frost heaving prevention performance, the concrete strength is C40, the concrete strength is C40, the frost-resistant grade is F200, and the concrete mixing ratio is cement: sand: stone: water: water reducing agent: air entraining agent 450:650:1150:150:4.51: 2.7.
Furthermore, the heating material has waterproof, insulating and heating performances, is a special heating plate, and has black outer surface.
Further, the anti-icing pushes away the structure for reinforced concrete, has the frost heaving resistance ability, and the shape is the quadrangle, and concrete strength is C40, and freeze proof grade F200, concrete mix proportion is cement: sand: stone: water: water reducing agent: air entraining agent 450:650:1150:150:4.51: 2.7.
Furthermore, the solar control system and the wind control system are alternative working mode systems and can be switched to work by the solar control system and the wind control system in a self-adaptive mode.
Further, the cast-in-place concrete structure comprises a geomembrane, a gravel stone cushion layer and cast-in-place concrete which are sequentially laid on the dam body.
Furthermore, the outer surfaces of the cast-in-place concrete and the reinforced concrete wall body top surface fixing heating materials are on the same plane.
A construction method of a slope protection ice-prevention push structure of an earth-rock dam in a high and cold area comprises the following steps:
1) filling a dam body, and making the dam body into a straight line shape;
2) pouring a reinforced concrete wall body in an icing area of a reservoir winter water storage level corresponding to a dam slope, installing a heating material at the top of the reinforced concrete wall body, and extending a power supply connecting wire of the heating material to the upstream side of the top of the dam;
3) sequentially paving a geomembrane and a sand gravel cushion layer on the surface of the dam body to the top of the dam;
4) Pouring cast-in-place concrete on the gravel stone cushion layer along the dam bottom to one side, close to the dam bottom, of the reinforced concrete wall body;
5) an anti-icing push structure is poured on one side of the reinforced concrete wall body;
6) pouring cast-in-place concrete from one side of the anti-icing push structure to the dam crest;
7) a solar control system and a wind control system are arranged on the dam crest near the upstream side and are connected with a power supply connecting wire of a heating material;
8) and starting the solar control system or the wind energy control system when the reservoir protection slope is frozen in winter.
Further, the width of the reinforced concrete wall body in the step 2) is 1-3m, the height of the reinforced concrete wall body is 1-3m, and the reinforced concrete wall body is arranged along the axis direction of the dam.
Further, reinforcing steel bars are embedded in the top of the reinforced concrete wall in the step 2), and heating materials are fixedly arranged on the surface of the top of the reinforced concrete wall and arranged along the axis direction of the dam.
Further, the width of the anti-icing push structure in the step 6) is 0.5m, the height of the anti-icing push structure is 0.8m, and the anti-icing push structure is arranged along the axial direction of the dam.
The invention has the beneficial effects that:
the material is heated by utilizing a solar system and a wind energy control system, ice on the surface of the slope protection in the ice formation area of the water storage position in winter is melted, and the erosion, frost heaving, ice pushing and ice pulling damage of the ice to the slope protection are prevented;
The ice pushing prevention structure further prevents the ice pushing and ice pulling effects, so that the dam body is damaged under the ice pushing and wind wave effects, and the anti-frost-heaving effect is achieved through double effects.
The invention achieves the frost heaving prevention effect by utilizing different structural forms and heating materials, and has the characteristics of small uneven frost heaving deformation, strong frost heaving prevention capability and good frost heaving prevention effect compared with the conventional frost heaving prevention structure of the earth-rock dam.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the plane of the anti-frost heaving structure of the present invention;
in the figure:
1. a dam body; 2. casting concrete in situ; 3. a reinforced concrete wall; 4. embedding reinforcing steel bars in advance; 5. heating the material; 6. a nut; 7. a power connection line; 8. an anti-icing push structure; 9. a geomembrane; 10. a gravel stone cushion layer; 11. a solar control system; 12. a wind energy control system.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
As shown in figures 1 and 2, the slope protection anti-icing push structure of the earth-rock dam in the high and cold region comprises a dam slope and a dam top, three anti-icing push structures are distributed along the dam body 1, the three anti-icing push structures are respectively a cast-in-place concrete structure paved at the dam bottom and the dam top, a reinforced concrete wall body poured and embedded at the dam slope and an anti-icing push structure poured and embedded at the dam slope, the reinforced concrete wall structure 2 is a reinforced concrete wall body 3, reinforcing steel bars 4 are embedded at the top of the reinforced concrete wall body 3, a heating material 5, a nut 6 and a power supply connecting wire 7 are fixedly arranged on the surface of the top of the reinforced concrete wall body 3, the reinforced concrete wall body 2 and the anti-icing push structure 8 are positioned in an ice region of a water storage position in winter corresponding to the dam slope, the reinforced concrete wall body 3 is 1-3m wide and 1-3m high, and the anti-icing push structure 8 is 0.5m wide, the height is 0.8m, the cast-in-place concrete structure comprises a geomembrane 9, a sand gravel cushion layer 10 and cast-in-place concrete 2 which are sequentially paved from inside to outside perpendicular to the surface of a dam body 1, the solar control system 11 and the wind control system 12 are positioned on the upstream side close to the top of the dam, and the power supply connecting wire 7 extends to the top of the dam and is connected with the solar control system 11 and the wind control system 12.
Water at the water storage position can be frozen and spread along the surface of a dam slope in winter to generate thrust and ice pulling on the slope body, when water in the water storage position range is frozen in winter, an ice layer is distributed on the reinforced concrete wall structure, the heating material 5 can melt the slope protection and freeze, and the ice pulling damage is further eliminated by the ice-preventing pushing structure 7;
a construction method of a slope protection ice-prevention push structure of an earth-rock dam in a high and cold area comprises the following steps:
1) filling a dam body 1, and making a dam slope into a straight line;
2) pouring a reinforced concrete wall 3 in an icing area of a reservoir winter water storage level corresponding to a dam slope, wherein the width of the reinforced concrete wall 3 is 2m, the height of the reinforced concrete wall is 2m, the reinforced concrete wall 3 has the strength of C40, the strength of concrete is C40, the freezing resistance grade is F200, and the mix ratio of the concrete is cement: sand: stone: water: water reducing agent: air entraining agent 450:650:1150:150:4.51: 2.7. Embedding embedded steel bars 4 at the top of the reinforced concrete wall 3, paving a novel heating material 5 at the top of the reinforced concrete wall 3, and enabling the outer surface of the novel heating material 5 to be black; the power connecting wire 7 is laid to the top of the dam along the revetment;
3) pour anti-icing at 3 one ends of reinforced concrete wall body and push away structure 8, anti-icing pushes away structure 8 and is reinforced concrete structure, and the concrete strength is C40, and freeze proof grade F200, the concrete mix proportion is cement: sand: stone: water: water reducing agent: the air entraining agent is 450:650:1150:150:4.51:2.7, the width of the anti-icing push structure is 0.5m, and the height is 0.8 m;
4) Sequentially laying a geomembrane 9 and a sand gravel cushion layer 10 to the top of the dam from inside to outside along the surface vertical to the dam body;
5) and pouring cast-in-place concrete 2 on the gravel cushion layer 10 from the dam bottom to one side of the reinforced concrete wall body 3 close to the dam bottom.
Claims (12)
1. The utility model provides a high and cold district earth and rockfill dam bank protection anti-icing pushes away structure which characterized in that: the method comprises the following steps that three anti-frost-heaving structures, a solar control system and a wind control system are arranged at the upstream of a dam body, wherein the three anti-frost-heaving structures are respectively a cast-in-place concrete structure paved at the bottom and the top of the dam, a reinforced concrete wall body poured at a dam slope and an anti-icing push structure poured at the dam slope, the reinforced concrete wall body and the anti-icing push structure are positioned in a reservoir winter water storage position icing area corresponding to the dam slope, and the solar control system and the wind control system are positioned at the upstream side of the top of the dam;
heating materials are installed on the top of the reinforced concrete wall, and power supply connecting wires of the heating materials extend to the upstream side of the dam crest; and a solar control system and a wind control system are arranged on the dam crest close to the upstream side and are connected with a power supply connecting wire of the heating material.
2. The alpine region earth-rock dam slope protection anti-icing push structure of claim 1, characterized in that: reinforcing steel bars are embedded in the top of the reinforced concrete wall body, and a heating material is fixedly arranged on the surface of the top of the reinforced concrete wall body.
3. The alpine region earth-rock dam slope protection anti-icing pushes away structure of claim 2, characterized in that: the reinforced concrete wall has frost heaving prevention performance, the concrete strength is C40, the frost-resistant grade is F200, and the concrete mixing proportion is cement: sand: stone: water: water reducing agent: air entraining agent 450:650:1150:150:4.51: 2.7.
4. The alpine region earth-rock dam slope protection anti-icing pushes away structure of claim 2, characterized in that: the heating material has waterproof, insulating and heating performances, is a special heating plate, and has black outer surface.
5. The alpine region earth-rock dam slope protection anti-icing push structure of claim 1, characterized in that: the anti-icing pushes away the structure for reinforced concrete, has the frost heaving prevention performance, and the shape is the quadrangle, and concrete strength is C40, and freeze proof grade F200, concrete mix proportion is cement: sand: stone: water: water reducing agent: air entraining agent 450:650:1150:150:4.51: 2.7.
6. The alpine region earth-rock dam slope protection anti-icing push structure of claim 1, characterized in that: the solar control system and the wind control system are alternative working mode systems and can be switched to work by self-adapting to each other.
7. The alpine region earth-rock dam slope protection anti-icing push structure of claim 1, characterized in that: the cast-in-place concrete structure comprises a geomembrane, a gravel stone cushion layer and cast-in-place concrete which are sequentially laid on the dam body.
8. The alpine region earth-rock dam slope protection anti-icing push structure of claim 1, characterized in that: the outer surfaces of the cast-in-place concrete and the reinforced concrete wall body top surface fixing heating materials are on the same plane.
9. A construction method of a slope protection ice-prevention push structure of an earth-rock dam in a high and cold area is characterized by comprising the following steps: the method comprises the following steps:
1) filling a dam body, and making the dam body into a straight line shape;
2) pouring a reinforced concrete wall body in an icing area of a reservoir winter water storage level corresponding to a dam slope, installing a heating material at the top of the reinforced concrete wall body, and extending a power supply connecting wire of the heating material to the upstream side of the top of the dam;
3) sequentially paving a geomembrane and a sand gravel cushion layer on the surface of the dam body to the top of the dam;
4) pouring cast-in-place concrete on the gravel stone cushion layer along the dam bottom to one side, close to the dam bottom, of the reinforced concrete wall body;
5) an anti-icing push structure is poured on one side of the reinforced concrete wall body;
6) Pouring cast-in-place concrete from one side of the anti-icing push structure to the dam crest;
7) a solar control system and a wind control system are arranged on the dam crest near the upstream side and are connected with a power supply connecting wire of a heating material;
8) and starting the solar control system or the wind energy control system when the reservoir protection slope is frozen in winter.
10. The construction method of the ice pushing preventing structure for the slope protection of the earth and rockfill dam in the alpine region according to claim 9, wherein: in the step 2), the width of the reinforced concrete wall body is 1-3m, the height of the reinforced concrete wall body is 1-3m, and the reinforced concrete wall body is arranged along the axis direction of the dam.
11. The construction method of the ice pushing preventing structure for the slope protection of the earth and rockfill dam in the alpine region according to claim 9, wherein: and (3) embedding steel bars at the top of the reinforced concrete wall in the step 2), wherein a heating material is fixedly arranged on the surface of the top of the reinforced concrete wall and is arranged along the axis direction of the dam.
12. The construction method of the ice pushing preventing structure for the slope protection of the earth and rockfill dam in the alpine region according to claim 9, wherein: the width of the anti-icing push structure in the step 6) is 0.5m, the height of the anti-icing push structure is 0.8m, and the anti-icing push structure is arranged along the axis direction of the dam.
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| CN201710306276.6A CN107152009B8 (en) | 2017-05-04 | 2017-05-04 | High and cold region earth and rockfill dam slope protection anti-icing push structure and construction method thereof |
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| CN201710306276.6A CN107152009B8 (en) | 2017-05-04 | 2017-05-04 | High and cold region earth and rockfill dam slope protection anti-icing push structure and construction method thereof |
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| CN107152009B true CN107152009B (en) | 2022-01-18 |
| CN107152009B8 CN107152009B8 (en) | 2022-02-08 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107905179A (en) * | 2017-11-22 | 2018-04-13 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of cold area's earth and rockfill dam anti-freeze expansion structure and its construction method |
| CN109610415A (en) * | 2018-12-11 | 2019-04-12 | 长春工程学院 | The dam configuration that frost damage prevention destroys |
| CN110939112B (en) * | 2019-12-11 | 2021-04-27 | 宁夏捷丰建设工程有限公司 | Energy-saving anti-icing sluicing slope for water conservancy facilities |
| CN111778934A (en) * | 2020-07-23 | 2020-10-16 | 中国科学院西北生态环境资源研究院 | Heat-preservation and heat-storage anti-freezing structure for reservoir dam in cold region |
| CN112962523B (en) * | 2021-02-08 | 2021-09-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Dam frost heaving prevention protection structure and construction method |
| CN114000462B (en) * | 2021-11-26 | 2023-06-16 | 中水北方勘测设计研究有限责任公司 | Anti-icing pushing method for auxiliary steel pipe of reservoir slope protection water measuring facility |
| CN115045233B (en) * | 2022-07-20 | 2023-04-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Anti-ice pushing and scouring dam slope protection and construction method thereof |
| CN116289790B (en) * | 2022-12-27 | 2023-09-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Device for preventing ice from pushing and pulling on dam slope of earth-rock dam and ice pushing force calculation method |
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Non-Patent Citations (2)
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| 复合土工膜在高寒区土石坝防渗中的应用;李锦清;《西北水电》;20031231;第17-18、38页 * |
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| CN107152009B8 (en) | 2022-02-08 |
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Inventor after: Li Zhuo Inventor after: Yang Yang Inventor after: Fan Guangya Inventor after: Jiang Jingdong Inventor after: Bi Chaoda Inventor after: Long Zhifei Inventor after: Sun Weiwei Inventor before: Li Zhuo Inventor before: He Yongjun Inventor before: Fan Guangya Inventor before: Yang Yang |
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Correction item: Inventor Correct: Li Zhuo|Yang Yang|Fan Guangya|Jiang Jingdong|Bi Chaoda|Long Zhifei|Sun Weiwei False: Li Zhuo|Fan Guangya|Bi Chaoda|Long Zhifei|Sun Weiwei Number: 03-01 Page: The title page Volume: 38 Correction item: Inventor Correct: Li Zhuo|Yang Yang|Fan Guangya|Jiang Jingdong|Bi Chaoda|Long Zhifei|Sun Weiwei False: Li Zhuo|Fan Guangya|Bi Chaoda|Long Zhifei|Sun Weiwei Number: 03-01 Volume: 38 |
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