CN114606903B - Seepage-proofing reinforcing method for masonry dam - Google Patents
Seepage-proofing reinforcing method for masonry dam Download PDFInfo
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- CN114606903B CN114606903B CN202210395512.7A CN202210395512A CN114606903B CN 114606903 B CN114606903 B CN 114606903B CN 202210395512 A CN202210395512 A CN 202210395512A CN 114606903 B CN114606903 B CN 114606903B
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- seepage
- proofing
- dam
- original
- proofing body
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004567 concrete Substances 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 description 17
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- 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
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Ocean & Marine Engineering (AREA)
- Sewage (AREA)
- Foundations (AREA)
Abstract
The invention provides an anti-seepage reinforcement method for a masonry dam, which comprises the following steps: lowering the water level of the reservoir to below the emptying water level line through the water discharging hole; step two: constructing a dam foundation seepage-proofing body; curtain grouting is carried out downwards in the gallery to form a vertical seepage-proofing body; performing horizontal grouting in the gallery to form a horizontal seepage-proofing body, wherein the horizontal seepage-proofing body is connected with the original dam body seepage-proofing body; the vertical seepage-proofing body and the horizontal seepage-proofing body form a dam foundation seepage-proofing body together; step three: constructing an original dam face seepage-proofing unit; s1, cutting a plurality of guide grooves on the masonry of the original dam face, wherein the depth of the guide grooves reaches the original seepage-proofing body; s2, pouring concrete in the guide groove to form a concrete separation beam which is connected and sealed with the seepage-proofing body of the original dam body, and dividing the original dam surface by the concrete separation beam to form a plurality of separation units; s3, cleaning an original dam surface, spraying mortar at high pressure, and forming a mortar protection layer on the outer side of the masonry; and S4, laying and pasting an anti-seepage coiled material on each separation unit to form an independent anti-seepage unit. The invention has the advantages of short construction period, low cost and simple construction.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, and relates to an anti-seepage reinforcement method for a masonry dam.
Background
The existing stone dam seepage prevention and reinforcement method mostly comprises the steps of emptying a reservoir, building a cofferdam, pouring a construction platform, pouring a reinforced concrete panel on the upstream dam face and the like, and has the defects of long construction period, high manufacturing cost and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the anti-seepage reinforcing method of the masonry dam is provided, and particularly the anti-seepage reinforcing method of the masonry dam is provided for a gallery in the dam body.
The technical scheme adopted for solving the technical problems is as follows:
the technical scheme provides an anti-seepage reinforcement method for a masonry dam, which comprises the following steps:
step one: lowering the water level of the reservoir to below the emptying water level line through the water discharging hole;
step two: construction of dam foundation seepage-proofing body
Curtain grouting is carried out downwards in the gallery to form a vertical seepage-proofing body; horizontal grouting is carried out in the gallery along the axial direction of the dam body to form a horizontal seepage-proofing body, and the horizontal seepage-proofing body is connected with the original seepage-proofing body of the dam body; the vertical seepage-proofing body and the horizontal seepage-proofing body form a dam foundation seepage-proofing body together;
step three: construction of an original dam face seepage-proofing unit
S1, cutting a plurality of guide grooves on the masonry of the original dam face, wherein the depth of the guide grooves reaches the original seepage-proofing body;
s2, pouring concrete in the guide groove to form a concrete separation beam which is connected and sealed with the seepage-proofing body of the original dam body, and dividing the original dam surface by the concrete separation beam to form a plurality of separation units;
s3, cleaning the original dam surface by using a high-pressure water gun and a steel brush, spraying mortar at high pressure, and forming a mortar protection layer on the outer side of the masonry;
s4, laying and pasting anti-seepage coiled materials on each separation unit to form a plurality of independent anti-seepage units; the seepage-proofing unit and the dam foundation seepage-proofing body form a complete seepage-proofing system together.
The concrete construction method of the concrete separation beam in the step S2 comprises the following steps: firstly, cleaning a cut guide groove, and embedding a grouting pipe in the guide groove after cleaning; then embedding and fixing the template in the guide groove, and finally pouring concrete to form the concrete separation beam;
the template is U-shaped channel steel, wing plates are connected to the side walls of the two sides of the U-shaped channel steel, and screw holes are formed in the wing plates; when in installation, countersunk grooves corresponding to the wing plates are formed on two sides of the guide groove; the U-shaped channel steel is embedded into the guide groove, and the wing plate is positioned in the countersunk groove; and the screw holes are penetrated with expansion bolts to realize the fixed connection of the U-shaped channel steel and the masonry of the original dam face.
Compared with the prior art, the invention has the following advantages:
according to the method, a method of combining curtain grouting and horizontal grouting is adopted for seepage prevention of the part below the emptying water level line, so that a dam foundation seepage prevention body is formed, the emptying operation of water below the emptying water level line in the reservoir is not needed, and the construction speed is improved; aiming at the seepage prevention of the part above the emptying water line, a mode of laying and pasting seepage prevention coiled materials in separation units divided by a concrete separation beam to form a plurality of independent seepage prevention units is adopted, the independent seepage prevention units and a dam foundation seepage prevention body form a complete seepage prevention system together, the system is formed, the construction amount and the construction steps are reduced, the construction time is saved, and the construction efficiency is greatly improved; the method has the advantages of short construction period, low cost and simple and convenient construction.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a cross-sectional view of the structure of the present invention.
Fig. 2 is a schematic view of the structure of the partition unit in the present invention.
Fig. 3 is a top cross-sectional view of a U-channel and channel mating structure.
Fig. 4 is an enlarged schematic view of a U-channel structure.
Reference numerals illustrate:
1 dam foundation; 2 galleries; 3, an original dam body seepage-proofing body; 4, original dam surface; 5, a concrete separation beam; 6, a horizontal seepage-proofing body; 7, a water discharge hole; 8, a vertical seepage-proofing body; 9 dividing units; 10 grouting pipes; 11U-shaped channel steel; 12 wing plates; 13 expansion bolts; 14 a mortar protection layer; 15 impervious coiled material; 16 countersunk grooves.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
As shown in fig. 1-4, the embodiment provides an impermeable reinforcement method for a masonry dam, which is constructed by dividing an impermeable system into two parts, and specifically comprises the following steps:
step one: lowering the water level of the reservoir to below the emptying water level line through the water discharging hole; the emptying water level line takes the bottom of the gallery as a base line, and the base line is the emptying water level line;
step two: the dam foundation seepage-proofing body is constructed, and the seepage proofing of the part below the emptying water level line is realized by constructing the dam foundation seepage-proofing body, so that the reservoir water below the emptying water level line is not required to be emptied, the construction efficiency is greatly improved, and the concrete method is as follows:
curtain grouting is carried out downwards in a gallery 2 of the dam foundation 1 to form a vertical seepage-proofing body 8; horizontal grouting is carried out in the gallery 2 along the axial direction of the dam body to form a horizontal impermeable body 6, and the horizontal impermeable body 6 is connected with the original impermeable body 3 of the dam body; the vertical seepage-proofing body 8 and the horizontal seepage-proofing body 6 form a dam foundation seepage-proofing body together;
step three: the method comprises the steps of constructing an anti-seepage unit of an original dam face 4, adopting a mode of sticking an anti-seepage coiled material 15 on the original dam face 4 aiming at anti-seepage of a part above an emptying water line, and specifically comprising the following steps of:
s1, cutting a plurality of guide grooves on masonry of an original dam face 4, wherein the depth of the guide grooves reaches the position of an original dam body seepage-proofing body 3;
s2, pouring concrete in the guide groove to form a concrete separation beam 5 which is connected and sealed with the original dam body seepage-proofing body 3, wherein the concrete separation beam 5 divides the original dam surface 4 to form a plurality of separation units 9;
s3, cleaning the original dam surface 4 by using a high-pressure water gun and a steel brush, spraying mortar at high pressure, and forming a mortar protection layer 14 on the outer side of the masonry;
s4, laying and pasting impermeable coiled materials 15 on each separation unit 9 to form a plurality of independent impermeable units; the seepage-proofing units and the dam foundation seepage-proofing bodies form a complete seepage-proofing system together.
The original dam face 4 is divided into a plurality of separation units 9, so that the anti-seepage coiled materials 15 can be conveniently paved and adhered, and the construction convenience is improved.
The concrete construction method of the concrete separation beam 5 in the step S2 comprises the following steps: firstly, cleaning a cut guide groove, and embedding a grouting pipe in the guide groove after cleaning; then, embedding and fixing a template in the guide groove, and finally pouring concrete to form the concrete separation beam 5;
the template is U-shaped channel steel 11, wing plates 12 are connected to the side walls of the two sides of the U-shaped channel steel 11, and screw holes are formed in the wing plates; during installation, countersunk grooves 16 corresponding to the wing plates 12 are formed on two sides of the guide groove; the U-shaped channel steel 11 is embedded into the guide groove, and the wing plate 12 is positioned in the countersunk groove 16; and the screw holes are penetrated with expansion bolts to realize the fixed connection between the U-shaped channel steel 11 and the masonry of the original dam face 4.
The countersunk head grooves 16 are matched with the structures of the wing plates 12, so that the heads of the expansion bolts can be hidden, the subsequent laying of the anti-seepage coiled materials 15 is facilitated, otherwise, the heads of the expansion bolts leak outwards, and the laying construction is influenced.
In addition, in step S3, the countersink 16 may be smoothed with concrete mortar before the mortar is sprayed at high pressure, and the subsequent operations may be performed.
Compared with the prior art, the invention has the following advantages:
according to the method, a method of combining curtain grouting and horizontal grouting is adopted for seepage prevention of the part below the emptying water level line, so that a dam foundation seepage prevention body is formed, the emptying operation of water below the emptying water level line in the reservoir is not needed, and the construction speed is improved; aiming at the seepage prevention of the part above the emptying water line, a mode of laying and pasting seepage prevention coiled materials in the separation units 9 divided by the concrete separation beams 5 to form a plurality of independent seepage prevention units is adopted, the independent seepage prevention units and dam foundation seepage prevention bodies form a complete seepage prevention system together, the system is formed, the construction amount and the construction steps are reduced, the construction time is saved, and the construction efficiency is greatly improved; the method has the advantages of short construction period, low cost and simple and convenient construction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (1)
1. The seepage-proofing reinforcement method for the masonry dam is characterized by comprising the following steps of:
step one: lowering the water level of the reservoir to below the emptying water level line through the water discharging hole;
step two: construction of dam foundation seepage-proofing body
Curtain grouting is carried out downwards in the gallery to form a vertical seepage-proofing body; horizontal grouting is carried out in the gallery along the axial direction of the dam body to form a horizontal seepage-proofing body, and the horizontal seepage-proofing body is connected with the original seepage-proofing body of the dam body; the vertical seepage-proofing body and the horizontal seepage-proofing body form a dam foundation seepage-proofing body together;
step three: construction of an original dam face seepage-proofing unit
S1, cutting a plurality of guide grooves on the masonry of the original dam face, wherein the depth of the guide grooves reaches the original seepage-proofing body;
s2, pouring concrete in the guide groove to form a concrete separation beam which is connected and sealed with the seepage-proofing body of the original dam body, and dividing the original dam surface by the concrete separation beam to form a plurality of separation units;
the concrete construction method of the concrete separation beam in the S2 comprises the following steps: firstly, cleaning a cut guide groove, and embedding a grouting pipe in the guide groove after cleaning; then embedding and fixing the template in the guide groove, and finally pouring concrete to form the concrete separation beam;
the template is U-shaped channel steel, wing plates are connected to the side walls of the two sides of the U-shaped channel steel, and screw holes are formed in the wing plates; when in installation, countersunk grooves corresponding to the wing plates are formed on two sides of the guide groove; the U-shaped channel steel is embedded into the guide groove, and the wing plate is positioned in the countersunk groove; penetrating expansion bolts into the screw holes to realize the fixed connection between the U-shaped channel steel and the masonry of the original dam face;
s3, cleaning the original dam surface by using a high-pressure water gun and a steel brush, spraying mortar at high pressure, and forming a mortar protection layer on the outer side of the masonry;
s4, laying and pasting anti-seepage coiled materials on each separation unit to form a plurality of independent anti-seepage units; the seepage-proofing unit and the dam foundation seepage-proofing body form a complete seepage-proofing system together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395512.7A CN114606903B (en) | 2022-04-15 | 2022-04-15 | Seepage-proofing reinforcing method for masonry dam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395512.7A CN114606903B (en) | 2022-04-15 | 2022-04-15 | Seepage-proofing reinforcing method for masonry dam |
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| Publication Number | Publication Date |
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| CN114606903A CN114606903A (en) | 2022-06-10 |
| CN114606903B true CN114606903B (en) | 2024-03-01 |
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| CN202210395512.7A Active CN114606903B (en) | 2022-04-15 | 2022-04-15 | Seepage-proofing reinforcing method for masonry dam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115450242B (en) * | 2022-09-01 | 2024-06-07 | 中国电建集团贵阳勘测设计研究院有限公司 | Concrete dam sealing seepage-proofing reinforcing structure and construction method thereof |
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| CN105484204A (en) * | 2015-12-31 | 2016-04-13 | 长江勘测规划设计研究有限责任公司 | Stone masonry dam or concrete dam sealing anti-seepage reinforcement structure and construction method thereof |
| CN106245595A (en) * | 2016-08-29 | 2016-12-21 | 中国电建集团西北勘测设计研究院有限公司 | A kind of antiseepage wall bottom maintainable face dam of seepage control system |
| CN106948315A (en) * | 2017-04-27 | 2017-07-14 | 长江勘测规划设计研究有限责任公司 | A kind of stone masonry dam dam grouting reinforcing structure inferior and method |
| CN108265683A (en) * | 2018-03-13 | 2018-07-10 | 中水北方勘测设计研究有限责任公司 | The gallery arrangement of RCC dam |
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| CN110499743A (en) * | 2019-07-29 | 2019-11-26 | 中电建十一局工程有限公司 | A kind of overlay film cemented gravel dam and its method of construction |
| CN216040994U (en) * | 2021-09-28 | 2022-03-15 | 湖南衡禹水利水电工程有限公司 | Grouting reinforcement structure for preventing seepage of dike |
-
2022
- 2022-04-15 CN CN202210395512.7A patent/CN114606903B/en active Active
Patent Citations (12)
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| RU1781370C (en) * | 1991-02-11 | 1992-12-15 | Восточно-Сибирское отделение Всесоюзного проектно-изыскательского и научно-исследовательского объединения "Гидропроект" им.С.Я.Жука | Hydraulic structure |
| CN2672161Y (en) * | 2003-07-15 | 2005-01-19 | 中国水利水电科学研究院 | Concrete dam with independent dam heel block structure |
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| CN108265683A (en) * | 2018-03-13 | 2018-07-10 | 中水北方勘测设计研究有限责任公司 | The gallery arrangement of RCC dam |
| CN209636736U (en) * | 2019-01-17 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | Gravity dam upstream face geomembrane anti-seepage discharge structure |
| CN110499743A (en) * | 2019-07-29 | 2019-11-26 | 中电建十一局工程有限公司 | A kind of overlay film cemented gravel dam and its method of construction |
| CN216040994U (en) * | 2021-09-28 | 2022-03-15 | 湖南衡禹水利水电工程有限公司 | Grouting reinforcement structure for preventing seepage of dike |
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| CN114606903A (en) | 2022-06-10 |
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