CN114718021A - Construction method for rapidly reconstructing upstream dam face seepage-proofing body structure of stone-laying dam - Google Patents
Construction method for rapidly reconstructing upstream dam face seepage-proofing body structure of stone-laying dam Download PDFInfo
- Publication number
- CN114718021A CN114718021A CN202210507201.5A CN202210507201A CN114718021A CN 114718021 A CN114718021 A CN 114718021A CN 202210507201 A CN202210507201 A CN 202210507201A CN 114718021 A CN114718021 A CN 114718021A
- Authority
- CN
- China
- Prior art keywords
- seepage
- dam
- poured
- newly
- panel
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- 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
-
- 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)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a construction method for rapidly reconstructing an upstream dam face seepage-proofing body structure of a masonry dam. The method comprises the following steps: arranging a newly-poured reinforced concrete continuous corbel base along the whole horizontal line above the water level of the original concrete seepage-proofing panel reservoir on the upstream side of the dangerous stone-building dam; step two: arranging newly-poured framework steel bar fiber reinforced concrete panels above the newly-poured reinforced concrete continuous bracket base, connecting the panels by adopting buckles, burying floral tubes between the panels, and pouring low-pressure high-strength micro-expansion mortar; step three: arranging a bracket part water stop between the newly-poured reinforced concrete continuous bracket base and the newly-poured skeleton reinforced steel fiber concrete panel; step four: and (4) elastically sealing the original upstream dam face structural joint below the reservoir water level by adopting an SR seepage-proofing module. The invention has the advantages of no need of emptying a reservoir during reinforcement, no need of chiseling an original concrete panel, less consumption of reinforcing steel bars, improvement of working efficiency, rapid formation of an anti-seepage structure, good anti-seepage performance after reinforcement, good durability and reliability and the like.
Description
Technical Field
The invention relates to the technical field of seepage-proofing reinforcement of a stone-laying dam in hydraulic and hydroelectric engineering, in particular to a method for quickly reconstructing an upstream dam face seepage-proofing body of the stone-laying dam, which is suitable for quickly reconstructing an upstream dam face seepage-proofing body structure of the stone-laying dam.
Background
The stone-laying dam has a long history, is one of the earliest dam types adopted in the world, is a hydraulic building formed by stone materials with certain specification requirements through mortar-laying, has the characteristics of simple construction process, local material utilization and the like, is limited to the technical and economic conditions in the construction period when a large number of stone-laying dams are built between the 20 th century and the 50 th to the 90 th in China, is simultaneously influenced by the service environment (temperature, humidity, freeze thawing, radiation and the like) and the properties (materials, quality and the like), and has the problems of cracking, erosion, damage and the like of the concrete panels at the upstream of more stone-laying dams in China after dozens of years of operation, so that the dam leakage is caused, if the concrete panels are not treated, the cracking aggravates and develops, and the leakage is further accelerated. At present, aiming at the defect problem of the upstream concrete panel of the stone-laying dam, most of the repairing treatment measures adopt an emptying reservoir to repair the upstream dam surface, but the emptying reservoir brings great negative effects and losses to society, economy, environment, ecology and tourism, and the operation difficulty is high.
Therefore, it is necessary to develop a method for quickly reconstructing the impervious body structure of the upstream dam surface of the masonry dam without emptying a reservoir during reinforcement.
Disclosure of Invention
The invention aims to provide a construction method for quickly reconstructing an upstream dam face seepage-proofing body structure of a stone-laying dam, which is suitable for seepage-proofing treatment of the stone-laying dam, ensures the seepage safety of the dam, does not need to empty a reservoir during reinforcement, does not need to chisel burrs on an original concrete face plate, adopts framework steel bars as a newly-poured seepage-proofing face plate, reduces the using amount of the steel bars, has quick construction, improves the seepage-proofing and crack-resisting performance of the concrete by doping steel fibers into the newly-poured seepage-proofing face plate, embeds flower tubes between the seepage-proofing face plates, pours low-pressure high-strength micro-expansion mortar, grouts the cracks of the original concrete face plate, connects the original concrete face plate in a buckling way, ensures that the newly-poured face plate and the original seepage-proofing face plate form a whole body to form double insurance seepage-proofing, improves the working efficiency, quickly forms a seepage-proofing structure, has good seepage-proofing performance after reinforcement, good durability and reliability, is feasible in operation and simple in process, all the used materials are common tools, the construction efficiency is high; the technical problem of rapid treatment of upstream concrete panel leakage of the stone-laying dam under the condition that the reservoir cannot be emptied is solved.
In order to achieve the purpose, the technical scheme of the invention is as follows: a construction method for rapidly reconstructing an upstream dam face seepage-proofing body structure of a masonry dam is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: arranging a newly-poured reinforced concrete continuous corbel base along the whole horizontal line above the water level of the original concrete seepage-proofing panel reservoir on the upstream side of the dangerous stone-building dam; the concrete anti-seepage panel is supported, and the concrete anti-seepage panel becomes a construction platform for the near-water side near-air operation; the original concrete anti-seepage panel of the stone-laying dam is connected with the newly-poured reinforced concrete continuous bracket base through newly-poured bracket steel bars so as to ensure the stable structure of the bracket base;
step two: arranging a newly-poured skeleton reinforced steel fiber concrete panel on the dam surface at the upstream side above the reservoir water level of the step one (the thickness of the newly-poured skeleton reinforced steel fiber concrete impervious panel is 30cm, the newly-poured skeleton reinforced steel fiber concrete panel is an impervious panel, the impervious panel adopts skeleton reinforcing steel bars, the peripheral and middle local reinforcements are arranged, the consumption of the reinforcing steel bars is reduced, the construction is rapid, the impervious panel is doped with steel fibers, the seepage-proof and crack-resistant performance of the concrete is improved, the steel fibers adopt flat type bronze fiber, the diameter is 0.2mm, the length is 13.0mm, the tensile strength is not lower than 2000MPa, the newly-poured skeleton reinforced steel fiber concrete panel and the original concrete impervious panel of the stone-laying dam are connected by adopting buckles, interface glue is coated, the embedded bars are arranged and anchored, a flower tube is embedded between the newly-poured skeleton reinforced steel fiber concrete panel and the original concrete impervious panel of the stone-laying dam, and low-pressure high-strength micro-expansion mortar (micro-expansion cement + epoxy mortar + additive + epoxy mortar are filled after the period of the newly-laying period of the new-laying dam is carried out period, and the new-laying period of the new-laying concrete impervious panel is carried out period, and the new period of the stone-laying dam is poured panel, the new period of the new-laying period of the stone-laying dam is poured panel, and the old period of the old slab period of the old ) The grouting pressure is controlled to be 0.1 MPa-0.2 MPa, the original concrete panel does not need to be chiseled, the construction is rapid, the cracks of the original concrete panel are subjected to grouting treatment, the cracks of the original concrete seepage-proofing panel of the stone-laying dam are grouted, and simultaneously the newly-poured framework steel bar fiber reinforced concrete panel and the original concrete seepage-proofing panel of the stone-laying dam are ensured to form a double-insurance seepage-proofing whole body, the joint stress is realized, and the structural seepage-proofing performance is further improved;
step three: the newly-poured framework steel bar fiber reinforced concrete panel is positioned above the newly-poured reinforced concrete continuous bracket base;
on the dam surface on the upstream side where the second step is implemented, a corbel part water stop is arranged between the newly-poured reinforced concrete continuous corbel base and the newly-poured skeleton reinforced steel fiber concrete panel, so that the anti-seepage effect between structures is ensured;
step four: and (3) on the upstream side dam face subjected to the third step, elastically sealing the upstream dam face structure seam (namely the original structure seam) below the reservoir water level by adopting an SR seepage-proofing module (namely the SR seepage-proofing module is adopted to elastically seal the newly-poured reinforced concrete continuous bracket base, as shown in figure 1).
In the technical scheme, in the step one, the newly-poured continuous reinforced concrete corbel base is connected with the original concrete seepage-proofing panel of the stone-laying dam by the newly-poured corbel steel bar, and the newly-poured corbel steel bar extends into the original concrete seepage-proofing panel of the stone-laying dam, so that the stability of the connecting structure is ensured.
In the technical scheme, in the second step, a newly-poured concrete anti-seepage panel and an original dam surface planting bar are arranged (the newly-poured concrete anti-seepage panel and the original concrete anti-seepage panel of the stone-building dam are arranged between the newly-poured framework steel reinforced fiber concrete panel and the original concrete anti-seepage panel, so that the stability of the connecting structure is ensured);
the newly poured concrete seepage-proofing face plate and the original dam face embedded bars are arranged vertically to the dam face and are arranged according to a quincunx shape, so that the stress and the stability of the structure are ensured.
The exposed ends of the newly-poured concrete seepage-proofing panel and the original dam surface embedded bars are bent and welded with surface layer reinforcing steel bars of the newly-poured framework reinforcing steel bar fiber concrete panel, so that the stability of the connecting structure is ensured;
framework steel bars are arranged in the newly-poured framework steel bar fiber concrete panel, the newly-poured framework steel bar fiber concrete panel adopts the framework steel bars, and the reinforcement is locally arranged at the periphery and the middle of the newly-poured framework steel bar fiber concrete panel, so that the using amount of the steel bars is reduced, and the construction is quick; and the newly-poured framework steel reinforcement fiber concrete panel (namely the seepage-proofing panel) is doped with the steel fibers, so that the seepage-proofing and crack-resisting performance of the concrete is improved.
In the technical scheme, in the second step, the newly-poured framework steel bar fiber concrete panel is poured in a layered mode, and before each layer of concrete is poured, the seam surfaces between layers are processed according to the requirements of construction specifications;
and a newly-poured concrete anti-seepage panel copper water stop sheet and an asphalt fir board are arranged between seams of the newly-poured framework steel bar fiber concrete panel (namely the interlayer seams of the newly-poured framework steel bar fiber concrete panel), so that the anti-seepage effect of the structure is ensured.
In the technical scheme, in the fourth step, the SR anti-seepage module is used for elastically sealing water and is connected with the copper sealing strip of the newly-poured concrete anti-seepage panel in a nested manner, so that the effect of sealing water is achieved, and the anti-seepage effect of the structure is ensured.
In the technical scheme, the SR anti-seepage module elastic water seal is arranged on an original concrete anti-seepage panel of the stone-laying dam, a newly-poured reinforced concrete continuous bracket base and a newly-poured framework reinforced steel fiber concrete panel, so that the anti-seepage effect among structures is ensured.
In the technical scheme, the elastic water stop of the SR anti-seepage module comprises an SR plastic filler structure and an SR cover plate;
the original structural joint is positioned between the original concrete seepage-proofing panels of the two adjacent stone-laying dams; the SR plastic filler structure is positioned in the original structural joint and at the joint of the original concrete seepage-proofing panels of the two adjacent stone-laying dams;
the SR cover sheet is wrapped on the periphery of the SR plastic packing structure and fixed on the original concrete anti-seepage panels of two adjacent stone-laying dams, so that the anti-seepage effect is improved.
The invention has the following advantages:
according to the construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam, a reservoir does not need to be emptied during reinforcement, the original concrete panel does not need to be chiseled, the using amount of materials such as reinforcing steel bars is small, the working efficiency is improved, the seepage-proofing structure is rapidly formed, the reinforced seepage-proofing performance is good, the durability and the reliability are high, the operation is feasible, the process is simple, the used materials are all existing finished materials, and the used tools and appliances are all common tools, so that the construction efficiency is high;
the method effectively solves the technical problem of rapidly processing the seepage of the concrete panel at the upstream of the stone-masonry dam under the condition that the reservoir cannot be emptied, provides a new thought for the seepage-proofing structure of the upstream dam surface of the stone-masonry dam, and can provide reference for similar projects. Under the condition that the reservoir is not emptied, a newly poured reinforced concrete continuous bracket base is arranged in the horizontal direction all along the line above the reservoir water level of the original concrete seepage-proofing panel on the upstream side of the sick stone-building dam, so that the effect of supporting the concrete seepage-proofing panel is achieved, and the construction platform becomes a construction platform for near-water side near-empty operation; the newly-poured framework reinforcing steel bar fiber concrete panel adopts framework reinforcing steel bars, and the periphery and the middle of the panel are locally reinforced, so that the consumption of the reinforcing steel bars is reduced, and the construction is quick; the anti-seepage panel is doped with steel fibers, so that the anti-seepage and anti-cracking performance of the concrete is improved; the panels (namely the newly-poured framework steel bar fiber concrete panel and the original concrete seepage-proofing panel of the stone-laying dam) are connected by adopting the embedded buckles and the embedded flower pipes are filled with low-pressure high-strength micro-expansion mortar, the original concrete panel does not need to be roughened, the construction is quick, the original panel cracks are grouted and treated, the newly-poured framework steel bar fiber concrete panel and the original concrete seepage-proofing panel of the stone-laying dam are ensured to form a whole, the double-insurance seepage-proofing is formed, and the structural seepage-proofing performance is quickly improved.
Drawings
FIG. 1 is a structural diagram of an upstream dam face seepage-proofing body of a rapidly reconstructed masonry dam.
FIG. 2 is a sectional view of an upstream dam face impervious body of the rapidly-reconstructed masonry dam.
Fig. 3 is a schematic structural view of the skeletal steel reinforced fiber concrete panel according to the present invention.
Fig. 4 is a large image of the bottom parting water stop joint of the panel in the invention.
Fig. 5 is a big picture of elastic water stop of the SR anti-seepage module in the invention.
FIG. 6 is a flow chart of the present invention.
In the figure, 1-original concrete seepage-proofing panel of stone-building dam, 2-newly-poured reinforced concrete continuous bracket base, 3-newly-poured skeleton reinforced steel fiber concrete panel, 4-bracket part water stop, 5-panel bottom seam water stop, 6-SR seepage-proofing module elastic water stop, 7-buckle, 8-newly-poured concrete seepage-proofing panel and original dam surface bar planting, 9-newly-poured bracket reinforcing bar, 10-newly-poured concrete seepage-proofing panel copper water stop sheet, 11-original structural seam, 12-SR plastic filler, 13-SR cover sheet, 14-flower tube and 15-skeleton reinforcing bar.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily understood by the description.
The invention provides a method for reconstructing an impervious body structure of an upstream dam surface of a stone-laying dam when a reservoir does not have an emptying condition; the main implementation content of the invention is as follows: a reinforced concrete continuous bracket base is arranged above the reservoir water level, a thin framework reinforced steel fiber concrete panel (the thickness is 30cm) is rebuilt on the upper part of the bracket, and the dam surface structural joint below the bracket is elastically sealed and repaired by an underwater SR seepage-proofing module. The reconstructed framework reinforcing steel bar fiber reinforced concrete panel adopts framework reinforcing steel bars, and the peripheral and middle local reinforcing steel bars are distributed, so that the consumption of the reinforcing steel bars is reduced, and the construction is rapid; the anti-seepage panel is doped with steel fibers, so that the anti-seepage and anti-cracking performance of the concrete is improved; the framework steel bar fiber reinforced concrete face plate is connected with the original dam face through embedding and buckling, interface glue is coated, embedded bars are anchored, the perforated pipe is embedded and filled with low-pressure high-strength micro-expansion mortar, and SR elastic water stop is connected with a newly-built anti-seepage face plate copper sheet in a water stop nested mode. When the structure and the construction method are adopted for reinforcement, a reservoir does not need to be emptied, the original concrete panel does not need to be chiseled, the consumption of materials such as reinforcing steel bars and the like is small, the reinforced seepage-proofing performance is good, and the durability and the reliability are good; the technical problem of rapid treatment of upstream concrete panel leakage of the stone-laying dam under the condition that the reservoir cannot be emptied is solved. According to the invention, a reservoir does not need to be emptied, an original concrete panel does not need to be chiseled, a continuous bracket base is adopted to provide a construction platform on the waterside side, steel fibers are doped in the panel to improve the anti-cracking performance of concrete, framework steel bars are adopted to reduce the using amount of the steel bars, pre-buried flower pipes are adopted to fill low-pressure high-strength micro-expansion mortar to perform grouting treatment on cracks of the original panel, the original panel and a newly-poured panel are subjected to double insurance seepage prevention, the integrity of a new and old panel (namely the newly-poured framework steel bar fiber concrete panel and the original concrete seepage prevention panel of the stone-laying dam) is improved through buckle connection, and the rapid reconstruction of the seepage prevention body on the upstream dam surface of the stone-laying dam is realized.
Examples
The invention is explained in detail by taking the embodiment of the invention for trying to reconstruct and reinforce the seepage-proofing body of the upstream dam surface of the stone-laying dam of a certain reservoir, and has the guiding function for applying the invention to seepage-proofing reinforcement of other water conservancy and hydropower engineering dangerous stone-laying dams.
The dam body is designed to prevent seepage by itself initially, and the dam body generally leaks water due to poor masonry quality of grouted masonry; in the 80 s, a concrete seepage-proofing panel is built on an upstream dam surface for seepage prevention, and due to the fact that the material quality and construction conditions are poor at that time, manual mixing and inserting tamping are not compact, the existing concrete panel is seriously damaged, cracks exist on the surface, sand and stone materials are exposed, and the water-stopping part of an aluminum sheet fails, so that the water seepage in a gallery is serious.
The concrete anti-seepage panel is thin, the problems that underwater construction is difficult and reinforcement quality is difficult to control when the concrete panel is repaired in a large area are solved, and the feasible scheme is to dismantle and rebuild the concrete anti-seepage panel and reform the original structural joint water stop. The concrete seepage-proofing panel is dismantled and rebuilt, dry land construction is needed, a cofferdam must be built at the upstream of the stone-laying dam, and a tunnel emptying reservoir must be built. The temporary works such as cofferdam building and the like are large in quantity, arrangement of newly-built emptying holes is difficult, lines are long, the problems of diversion, foundation pit drainage, flood crossing and the like are also involved during construction, construction difficulty is large, and temporary engineering investment is large.
The main structure of the upstream dam surface seepage-proofing body of the rapidly-reconstructed stone-laying dam of a certain reservoir in the embodiment is as follows:
a newly-poured reinforced concrete continuous bracket base 2 is arranged above the reservoir water level, a thin concrete anti-seepage panel (namely a newly-poured skeleton reinforced steel fiber concrete panel 3) with the thickness of 30 cm-50 cm is rebuilt at the upper part of the newly-poured reinforced concrete continuous bracket base 2, and a dam surface structural joint below the bracket is repaired by an underwater SR anti-seepage module elastic water stop 6. The reconstructed concrete panel (namely the newly-poured framework steel bar fiber concrete panel 3) is connected with the original dam face (namely the original concrete anti-seepage panel 1 of the stone-building dam in a buckling manner, the interface glue is coated, the embedded bars are anchored, and the SR anti-seepage module elastic water stop 6 is connected with the newly-poured concrete anti-seepage panel copper water stop sheet 10 between the seams of the newly-poured framework steel bar fiber concrete panel 3 in a nesting manner.
As shown in fig. 5, the construction method of the structure for reconstructing the impervious body according to the present invention is adopted on the upstream dam surface of a certain reservoir stone-laying dam in this embodiment as follows:
the method comprises the following steps: a newly-poured reinforced concrete continuous corbel base 2 is arranged on the upper side of the upstream stone-laying dam of the sick and dangerous stone-laying dam by 50cm above the reservoir water level of an original concrete seepage-proofing panel 1 along the whole horizontal line, the newly-poured reinforced concrete continuous corbel base 2 is 1m high, 50cm high and 50cm wide at the end (as shown in figure 2), and in the embodiment, the slope ratio of the newly-poured reinforced concrete continuous corbel base is 1: 1.
In the first step, a newly-poured reinforced concrete continuous corbel base 2 is connected with an original concrete seepage-proofing panel 1 of the stone-building dam by adopting a newly-poured corbel steel bar 9, and the newly-poured corbel steel bar 9 extends into the original concrete seepage-proofing panel 1 of the stone-building dam by 90 cm;
step two: washing the contact surface by a high-pressure water gun and drying in the air;
step three: arranging a new-poured framework reinforced steel fiber concrete panel 3 (the thickness is 30-50 cm) on the dam surface on the upstream side above the reservoir water level subjected to the second step, connecting the new-poured framework reinforced steel fiber concrete panel 3 with the stone-building dam original concrete anti-seepage panel 1 by using an embedded buckle 7, coating interface glue, laying embedded bars and anchoring, pre-burying a perforated pipe 14 between the panels (namely between the new-poured framework reinforced steel fiber concrete panel and the stone-building dam original concrete anti-seepage panel), and pouring low-pressure high-strength micro-expansion mortar to ensure that the new-poured framework reinforced steel fiber concrete panel 3 and the stone-building dam original concrete anti-seepage panel 1 form a whole;
laying the planting bars specifically comprises the following steps: laying a new concrete anti-seepage panel with a certain length and an original dam surface planting bar 8 (phi 16-phi 20); the newly-poured concrete seepage-proofing panel and the original dam face embedded bars 8 are arranged vertically to the dam face according to a quincunx shape, the spacing is 1.5-2 m, the exposed end is bent by 10cm and is effectively welded with the surface layer reinforcing steel bars of the newly-poured skeleton reinforcing steel bar fiber concrete panel 3, and the construction is carried out so as to avoid damaging the original concrete seepage-proofing panel 1 and the original dam face reinforcing steel bars of the stone-laying dam;
the newly-poured framework steel bar fiber reinforced concrete panel 3 is ensured to be poured in layers during pouring, and before each layer of concrete is poured, the seam surfaces between layers are treated according to the requirements of construction specifications; the strength of the bottom concrete can reach 70% of the designed strength, and the template can be disassembled;
arranging a newly-poured concrete anti-seepage panel copper water stop sheet 10 and a 2 cm-thick asphalt fir board between 3 seams of the newly-poured framework steel reinforcement fiber concrete panel;
step four: arranging a bracket part water stop 4 between the newly-poured reinforced concrete continuous bracket base 2 and the newly-poured skeleton reinforced steel fiber concrete panel 3 on the upstream dam surface on which the third step is implemented, wherein the bracket part water stop 4 is made of the same material as the SR anti-seepage module elastic water stop 6;
step five: sealing (wrapping the newly poured reinforced concrete continuous corbel base 2) the structural joint of the original upstream dam face below the reservoir water level by using an SR (stress relief) seepage-proofing module elastic water stop 6 on the upstream dam face subjected to the step four; the SR seepage-proofing module elastic water stop 6 is connected with a newly-poured concrete seepage-proofing panel copper water stop sheet 10 in a nested manner;
the construction steps below the reservoir level are carried out by divers.
And (4) conclusion: the method is feasible to operate and simple in process, the used materials are all the existing finished product materials, and the used tools and instruments are all common instruments, so that the construction efficiency is high; the method is adopted to quickly reconstruct and reinforce the seepage-proofing body of the upstream dam surface of the stone-laying dam under the condition that a certain reservoir cannot be emptied, the seepage-proofing performance is good after reconstruction and reinforcement, and the seepage safety of the dam can be ensured.
In order to more clearly illustrate the advantages of the construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam in the invention compared with the prior art, the two technical schemes are compared by workers, and the comparison result is as follows:
compared with the prior art, the construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the stone-laying dam has the advantages that during reinforcement, a reservoir does not need to be emptied, an original concrete panel does not need to be chiseled, the consumption of materials such as reinforcing steel bars is low, the working efficiency is improved, the seepage-proofing structure is rapidly formed, the reinforced seepage-proofing performance is good, and the durability and the reliability are good.
Other parts not described belong to the prior art.
Claims (7)
1. A construction method for rapidly reconstructing an upstream dam face seepage-proofing body structure of a masonry dam is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: arranging a newly-poured reinforced concrete continuous corbel base (2) along the whole horizontal line above the reservoir water level of the original concrete seepage-proofing panel (1) of the stone-laying dam on the upstream side of the dangerous stone-laying dam;
step two: arranging a newly-poured framework reinforcing steel fiber concrete panel (3) on the dam surface on the upstream side above the reservoir water level of the step one, connecting the newly-poured framework reinforcing steel fiber concrete panel (3) with the original concrete anti-seepage panel (1) of the stone-building dam by using an embedded buckle (7), coating interface glue, laying embedded bars and anchoring, burying a perforated pipe (14) between the original concrete anti-seepage panel (1) and the newly-poured framework reinforcing steel fiber concrete panel (3), pouring low-pressure high-strength micro-expansion mortar, grouting cracks of the original concrete anti-seepage panel (1) of the stone-building dam, and simultaneously ensuring that the newly-poured framework reinforcing steel fiber concrete panel (3) and the original concrete anti-seepage panel (1) of the stone-building dam form a double-insurance anti-seepage whole;
step three: arranging a corbel part water stop (4) between the newly-poured reinforced concrete continuous corbel base (2) and the newly-poured skeleton reinforced steel fiber concrete panel (3) on the dam surface on the upstream side on which the second step is implemented;
step four: and (4) sealing the structural gap of the original upstream dam face below the reservoir water level by adopting an SR (Security) seepage-proofing module elastic water seal (6) on the upstream dam face subjected to the third step.
2. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 1, characterized in that: in the first step, the newly-poured reinforced concrete continuous corbel base (2) is connected with the original concrete seepage-proofing panel (1) of the stone-building dam through the newly-poured corbel steel bar (9), and the newly-poured corbel steel bar (9) extends into the original concrete seepage-proofing panel (1) of the stone-building dam.
3. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 2, characterized in that: in the second step, laying a newly-poured concrete anti-seepage panel and an original dam surface planting bar (8);
the newly poured concrete seepage-proofing panel and the original dam face embedded bars (8) are arranged vertical to the dam face and are arranged according to a quincunx shape;
the exposed ends of the newly-poured concrete seepage-proofing panel and the original dam surface embedded bars (8) are bent and welded with the surface layer steel bars of the newly-poured framework steel bar fiber concrete panel (3);
and framework steel bars (15) are arranged in the newly-poured framework steel bar fiber concrete panel (3).
4. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 3, characterized in that: in the second step, the newly-poured framework steel bar fiber reinforced concrete panel (3) is poured in layers, and before each layer of concrete is poured, the interlayer seams are processed according to the requirements of construction specifications;
and a newly-poured concrete anti-seepage panel copper water stop sheet (10) and an asphalt fir board are arranged between the gaps of the newly-poured framework steel reinforcement fiber concrete panel (3).
5. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 4, characterized in that: in the fourth step, the elastic water stop (6) of the SR seepage-proofing module is connected with the copper water stop sheet (10) of the newly poured concrete seepage-proofing panel in a nested manner.
6. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 5, characterized in that: the SR anti-seepage module elastic water seal (6) is arranged on the original concrete anti-seepage panel (1) of the stone-laying dam, the newly-poured reinforced concrete continuous bracket base (2) and the newly-poured skeleton reinforced steel fiber concrete panel (3).
7. The construction method for rapidly reconstructing the upstream dam face seepage-proofing body structure of the masonry dam according to claim 6, wherein the construction method comprises the following steps: the SR seepage-proofing module elastic water seal (6) comprises an SR plastic packing structure (12) and an SR cover plate (13);
the original structural joint (11) is positioned between the original concrete anti-seepage panels (1) of two adjacent stone-laying dams; the SR plastic filler structure (12) is positioned in the original structural joint (11) and at the joint of the original concrete seepage-proofing panels (1) of the two adjacent stone-laying dams;
the SR cover sheet (13) wraps the periphery of the SR plastic filler structure (12) and is fixed on the original concrete seepage-proofing panels (1) of the two adjacent stone-laying dams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507201.5A CN114718021B (en) | 2022-05-10 | 2022-05-10 | Construction method for rapidly reconstructing seepage-proofing body structure of upstream dam face of stone-building dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507201.5A CN114718021B (en) | 2022-05-10 | 2022-05-10 | Construction method for rapidly reconstructing seepage-proofing body structure of upstream dam face of stone-building dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114718021A true CN114718021A (en) | 2022-07-08 |
| CN114718021B CN114718021B (en) | 2023-05-26 |
Family
ID=82231925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210507201.5A Active CN114718021B (en) | 2022-05-10 | 2022-05-10 | Construction method for rapidly reconstructing seepage-proofing body structure of upstream dam face of stone-building dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718021B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429601U (en) * | 2013-08-21 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Sealing-up structure for intersection position of reservoir bank water-tight face plate and concrete gravity dam cross joint |
| CN104863096A (en) * | 2015-05-27 | 2015-08-26 | 中国电建集团华东勘测设计研究院有限公司 | Overlay construction method for repairing aged asphalt concrete seepage-prevention face plate |
| CN205711985U (en) * | 2016-05-05 | 2016-11-23 | 中国电建集团华东勘测设计研究院有限公司 | The reparation structure of severe cold area morbid state concrete gravity dam |
| CN112709195A (en) * | 2020-12-28 | 2021-04-27 | 国网福建省电力有限公司电力科学研究院 | Method for water-stopping repair and cavity backfill of concrete panel structure joint of rock-fill dam |
| US20210164183A1 (en) * | 2018-04-04 | 2021-06-03 | Nanjing Hydraulic Research Institute Under The Ministry Of Water Resources, The Ministry Of Transpor | Underwater repair system for cavity region of concrete panel rock-fill dam panel |
-
2022
- 2022-05-10 CN CN202210507201.5A patent/CN114718021B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429601U (en) * | 2013-08-21 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Sealing-up structure for intersection position of reservoir bank water-tight face plate and concrete gravity dam cross joint |
| CN104863096A (en) * | 2015-05-27 | 2015-08-26 | 中国电建集团华东勘测设计研究院有限公司 | Overlay construction method for repairing aged asphalt concrete seepage-prevention face plate |
| CN205711985U (en) * | 2016-05-05 | 2016-11-23 | 中国电建集团华东勘测设计研究院有限公司 | The reparation structure of severe cold area morbid state concrete gravity dam |
| US20210164183A1 (en) * | 2018-04-04 | 2021-06-03 | Nanjing Hydraulic Research Institute Under The Ministry Of Water Resources, The Ministry Of Transpor | Underwater repair system for cavity region of concrete panel rock-fill dam panel |
| CN112709195A (en) * | 2020-12-28 | 2021-04-27 | 国网福建省电力有限公司电力科学研究院 | Method for water-stopping repair and cavity backfill of concrete panel structure joint of rock-fill dam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114718021B (en) | 2023-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101581088B (en) | Construction method for filling mortar combined stone dam | |
| CN204000956U (en) | A kind of basement bottom plate rear pouring tape structure | |
| CN110004991B (en) | Underground structure anti-floating system based on convex wing foot plate and construction method | |
| CN1112484C (en) | Prestressed underground continuous Wall | |
| CN105019404A (en) | Water-stop strip, water-stop structure of water-stop strip, and construction method for water-stop structure | |
| CN112900512A (en) | Basement bottom plate crack punching, reinforcing and repairing construction method | |
| US11598065B2 (en) | Method for stabilizing and lifting channel boards by underwater grouting | |
| CN112127390B (en) | Construction technology for simply plugging reserved sleeve of outer wall in underground structure area | |
| CN105970882B (en) | Solve the structure and its building method of face dam construction time dam body reverse osmosis water problems | |
| CN110080181B (en) | Hydraulic tunnel grouting structure and arrangement method thereof | |
| CN114718021A (en) | Construction method for rapidly reconstructing upstream dam face seepage-proofing body structure of stone-laying dam | |
| CN217480096U (en) | Structure for rapidly reconstructing upstream dam surface seepage-proofing body of stone-laying dam | |
| CN111636483A (en) | Waterproof device for reverse construction concrete structure gap and construction method | |
| CN202148539U (en) | Composite waterproof structure using underground engineering waterproof leaking stoppage treatment and construction method | |
| CN207003440U (en) | Foundation pit spring hole water treatment system | |
| CN105239534A (en) | Connecting structure for dam foundation gallery and dam body core wall | |
| CN214575952U (en) | Nondestructive restoration structure for top plate crack of basement of building | |
| CN209924154U (en) | Anti-seepage reinforcing structure for embedded pipe | |
| CN210238512U (en) | Concrete high dam full dam storehouse surface-free consolidation grouting structure | |
| CN108360573A (en) | Anti- basement bottom plate rear pouring tape leak device and its construction method | |
| CN108253202A (en) | Pipeline and preparation method thereof | |
| CN115492052B (en) | Seepage-proofing reinforcement treatment method for small-sized reservoir homogeneous dam body | |
| CN2465022Y (en) | Permeation-proof underground high-pressure water pipe made of double-layer concrete and steel sheet | |
| CN115506316B (en) | Concrete backfilling method for sealed space leakage vertical shaft under high external water pressure | |
| CN215367080U (en) | Combined type slope protection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |