CN114606903A - Seepage-proofing reinforcing method for stone-laying dam - Google Patents
Seepage-proofing reinforcing method for stone-laying dam Download PDFInfo
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- CN114606903A CN114606903A CN202210395512.7A CN202210395512A CN114606903A CN 114606903 A CN114606903 A CN 114606903A CN 202210395512 A CN202210395512 A CN 202210395512A CN 114606903 A CN114606903 A CN 114606903A
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- proofing
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 238000010276 construction Methods 0.000 claims abstract description 28
- 238000005192 partition Methods 0.000 claims abstract description 23
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000004575 stone Substances 0.000 claims abstract description 6
- 239000011241 protective layer Substances 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- 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)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Ocean & Marine Engineering (AREA)
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- Sewage (AREA)
Abstract
The invention provides an anti-seepage reinforcing method for a stone-laying dam, which comprises the following steps: the reservoir water level is reduced to be below the emptying water level line through the water drainage 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 seepage-proofing body of the original dam body; the vertical seepage-proofing body and the horizontal seepage-proofing body jointly form a dam foundation seepage-proofing body; step three: constructing an original dam face seepage-proofing unit; s1, cutting a plurality of guide grooves on the stone on the surface of the original dam, wherein the depth of the guide grooves reaches the position of the original seepage-proof body; s2, pouring concrete in the guide groove to form a concrete partition beam which is connected and sealed with the anti-seepage body of the original dam body, and dividing the original dam surface into a plurality of partition units by the concrete partition beam; s3, cleaning the original dam surface, spraying mortar at high pressure, and forming a mortar protective layer on the outer side of the masonry; and S4, laying and adhering the anti-seepage roll on each separation unit to form independent anti-seepage units. 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 reinforcing method for a stone-laying dam.
Background
At present, most of stone-laying dam seepage-proofing reinforcing methods are provided with seepage-proofing panels on upstream dam faces, the construction method needs the procedures of emptying a reservoir, building a cofferdam, pouring a construction platform, pouring reinforced concrete panels on the upstream dam faces and the like, and the method has the defects of long construction period, high construction cost and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an anti-seepage reinforcing method for a masonry dam, in particular to an anti-seepage reinforcing method for a masonry dam with galleries arranged in a dam body.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the technical scheme provides an anti-seepage reinforcing method for a stone-laying dam, which comprises the following steps:
the method comprises the following steps: the reservoir water level is reduced to be below the emptying water level line through the water drainage hole;
step two: anti-seepage body for constructing dam foundation
Curtain grouting is carried out downwards in the gallery to form a vertical seepage-proofing body; horizontally grouting along the axis direction of the dam body in the gallery to form a horizontal seepage-proofing body, wherein the horizontal seepage-proofing body is connected with the seepage-proofing body of the original dam body; the vertical seepage-proofing body and the horizontal seepage-proofing body jointly form a dam foundation seepage-proofing body;
step three: constructing original dam surface anti-seepage unit
S1, cutting a plurality of guide grooves on the stone on the surface of the original dam, wherein the depth of the guide grooves reaches the position of the original seepage-proof body;
s2, pouring concrete in the guide groove to form a concrete partition beam connected and sealed with the anti-seepage body of the original dam body, and dividing the original dam surface into a plurality of partition units by the concrete partition beam;
s3, cleaning the original dam surface by using a high-pressure water gun and a steel brush, and spraying mortar at high pressure to form a mortar protective layer on the outer side of the masonry;
s4, laying and pasting impervious coiled materials on each separation unit to form a plurality of independent impervious 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 partition 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 combining fixed templates in the guide grooves, and finally pouring concrete to form the concrete partition beam;
the template is a U-shaped channel steel, wing plates are connected to the side walls of two sides of the U-shaped channel steel, and screw holes are formed in the wing plates; when the wing plate is installed, countersunk grooves corresponding to the wing plates are formed in the 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 an expansion bolt penetrates into the screw hole to realize the fixed connection of the U-shaped channel steel and the stone on the original dam surface.
Compared with the prior art, the invention has the following advantages:
the invention carries out seepage-proofing reinforcement aiming at the masonry dam with the gallery arranged in the dam body, abandons the complicated procedures of emptying a reservoir, building a cofferdam, pouring a construction platform, pouring a reinforced concrete panel on the upstream original dam surface and the like in the prior art, adopts a method of combining curtain grouting and horizontal grouting aiming at seepage-proofing at the part below the emptying water level line in the method to form a dam foundation seepage-proofing body, does not need to empty water below the emptying water level line in the reservoir, and improves the construction speed; aiming at the seepage prevention of the part above the emptying water line, a mode of laying and pasting an anti-seepage coiled material in a separation unit divided by a concrete partition beam to form a plurality of independent anti-seepage units is adopted, and the independent anti-seepage units and the dam foundation anti-seepage bodies jointly form a complete anti-seepage system, so that the construction amount and the construction steps are reduced, the construction time is saved, and the construction efficiency is greatly improved; has the advantages of short construction period, low cost and simple construction.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a sectional view of the structure of the present invention.
FIG. 2 is a schematic view of the structure of the partition unit of the present invention.
Fig. 3 is a top cross-sectional view of the U-shaped channel and channel fitting structure.
Fig. 4 is an enlarged schematic view of a U-shaped groove steel structure.
Description of reference numerals:
1, dam foundation; 2, a gallery; 3, an original dam body seepage-proofing body; 4, original dam facing; 5, concrete partition beams; 6 horizontal seepage-proofing body; 7, discharging water in a hole; 8, a vertical seepage-proofing body; 9 a partition unit; 10 grouting pipes; 11U-shaped channel steel; 12 wing plates; 13 expansion bolts; 14 a mortar protective layer; 15 an impermeable coiled material; 16 countersunk grooves.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 4, this embodiment provides an anti-seepage reinforcing method for a masonry dam, which divides an anti-seepage system into two parts to be constructed, and specifically includes the following steps:
the method comprises the following steps: the reservoir water level is reduced to be below the emptying water level line through the water drainage hole; the emptying water level line is based on the bottom of the gallery, 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 water in a reservoir below the emptying water level line does not need to be emptied, the construction efficiency is greatly improved, and the specific method comprises the following steps:
curtain grouting is carried out downwards in the dam foundation 1 gallery 2 to form a vertical impervious body 8; horizontal grouting is carried out in the gallery 2 along the axis direction of the dam body to form a horizontal seepage-proofing body 6, and the horizontal seepage-proofing body 6 is connected with the original dam body seepage-proofing body 3; the vertical seepage-proofing body 8 and the horizontal seepage-proofing body 6 jointly form a dam foundation seepage-proofing body;
step three: constructing an original dam face 4 seepage-proofing unit, aiming at seepage-proofing of parts above a emptying water level line, adopting a mode of sticking an seepage-proofing coiled material 15 on the original dam face 4, wherein the specific method comprises the following steps:
s1, cutting a plurality of guide grooves on the stone on the original dam surface 4, wherein the depth of the guide grooves reaches the position of the anti-seepage body 3 of the original dam body;
s2, pouring concrete in the guide groove to form a concrete partition beam 5 which is connected and sealed with the anti-seepage body 3 of the original dam body, wherein the concrete partition beam 5 divides the original dam face 4 into a plurality of partition 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 protective layer 14 on the outer side of the masonry;
s4, laying and pasting impervious coiled materials 15 on each separation unit 9 to form a plurality of independent impervious units; the seepage-proofing unit and the dam foundation seepage-proofing body form a complete seepage-proofing system together.
The original dam surface 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 partition beam 5 in the step S2 is as follows: firstly, cleaning a cut guide groove, and embedding a grouting pipe in the guide groove after cleaning; then embedding and combining fixed templates in the guide grooves, and finally pouring concrete to form the concrete partition beam 5;
the template is U-shaped channel steel 11, the side walls of two sides of the U-shaped channel steel 11 are connected with wing plates 12, and the wing plates are provided with screw holes; when the device is installed, countersunk grooves 16 corresponding to the wing plates 12 are formed at the 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 an expansion bolt is penetrated into the screw hole to realize the fixed connection of the U-shaped channel steel 11 and the original dam face 4 masonry.
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 paving and pasting of the anti-seepage coiled materials 15 are facilitated, and otherwise, the heads of the expansion bolts leak outwards to influence the paving and pasting construction.
In addition, in step S3, the countersunk grooves 16 may be leveled with concrete mortar before the high-pressure spraying of the mortar, and the subsequent operation may be performed.
Compared with the prior art, the invention has the following advantages:
the invention carries out seepage-proofing reinforcement aiming at the masonry dam with the gallery 2 arranged in the dam body, abandons the complicated procedures of emptying a reservoir, building a cofferdam, pouring a construction platform, pouring a reinforced concrete panel on the upstream original dam face 4 and the like in the prior art, adopts a method combining curtain grouting and horizontal grouting aiming at seepage-proofing of the part below the emptying water level line in the method to form a dam foundation seepage-proofing body, does not need to empty water below the emptying water level line in the reservoir, and improves the construction speed; aiming at the seepage prevention of the part above the emptying water level line, a mode of laying and pasting seepage-prevention coiled materials in a separation unit 9 divided by a concrete partition beam 5 to form a plurality of independent seepage-prevention units is adopted, and the independent seepage-prevention units and dam foundation seepage-prevention bodies together form a complete seepage-prevention system, so that the formation of the system reduces the construction amount and the construction steps, saves the construction time and greatly improves the construction efficiency; has the advantages of short construction period, low cost and simple construction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (2)
1. An anti-seepage reinforcing method for a stone-laying dam is characterized by comprising the following steps:
the method comprises the following steps: the reservoir water level is reduced to be below the emptying water level line through the water drainage hole;
step two: anti-seepage body for constructing dam foundation
Curtain grouting is carried out downwards in the gallery to form a vertical seepage-proofing body; horizontally grouting along the axis direction of the dam body in the gallery to form a horizontal seepage-proofing body, wherein the horizontal seepage-proofing body is connected with the seepage-proofing body of the original dam body; the vertical seepage-proofing body and the horizontal seepage-proofing body jointly form a dam foundation seepage-proofing body;
step three: constructing original dam surface anti-seepage unit
S1, cutting a plurality of guide grooves on the stone on the surface of the original dam, wherein the depth of the guide grooves reaches the original anti-seepage body;
s2, pouring concrete in the guide groove to form a concrete partition beam connected and sealed with the anti-seepage body of the original dam body, and dividing the original dam surface into a plurality of partition units by the concrete partition beam;
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 protective layer on the outer side of the masonry;
s4, laying and pasting impervious coiled materials on each separation unit to form a plurality of independent impervious units; the seepage-proofing unit and the dam foundation seepage-proofing body form a complete seepage-proofing system together.
2. The method for seepage-proofing and reinforcing of masonry dams according to claim 1, wherein the concrete construction method of the concrete partition beams in the step S2 is as follows: firstly, cleaning a cut guide groove, and embedding a grouting pipe in the guide groove after cleaning; then embedding and combining fixed templates in the guide grooves, and finally pouring concrete to form the concrete partition beam;
the template is a U-shaped channel steel, wing plates are connected to the side walls of two sides of the U-shaped channel steel, and screw holes are formed in the wing plates; when the wing plate is installed, countersunk grooves corresponding to the wing plates are formed in the 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 an expansion bolt penetrates into the screw hole to realize the fixed connection of the U-shaped channel steel and the stone on the original dam surface.
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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| CN114606903A true CN114606903A (en) | 2022-06-10 |
| CN114606903B CN114606903B (en) | 2024-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450242A (en) * | 2022-09-01 | 2022-12-09 | 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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2022
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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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115450242A (en) * | 2022-09-01 | 2022-12-09 | 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 |
| 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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| Publication number | Publication date |
|---|---|
| CN114606903B (en) | 2024-03-01 |
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