CN114718021B - Construction method for rapidly reconstructing seepage-proofing body structure of upstream dam face of stone-building dam - Google Patents
Construction method for rapidly reconstructing seepage-proofing body structure of upstream dam face of stone-building dam Download PDFInfo
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- CN114718021B CN114718021B CN202210507201.5A CN202210507201A CN114718021B CN 114718021 B CN114718021 B CN 114718021B CN 202210507201 A CN202210507201 A CN 202210507201A CN 114718021 B CN114718021 B CN 114718021B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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Abstract
The invention discloses a construction method for quickly reconstructing an impermeable body structure of an upstream dam face of a masonry dam. The method comprises the following steps: arranging a newly-poured reinforced concrete continuous bracket base along a horizontal full line above the water level of an original concrete seepage-proofing panel warehouse at the upstream side of the disease-risk stone-laying dam; step two: setting a newly-poured skeleton reinforced steel fiber concrete panel above a newly-poured reinforced concrete continuous bracket base, connecting the newly-poured skeleton reinforced steel fiber concrete panel by adopting embedded buckles, embedding a flower pipe between the panels, and pouring low-pressure high-strength micro-expansion mortar; step three: setting bracket water stop between the newly-poured reinforced concrete continuous bracket base and the newly-poured skeleton reinforced steel fiber concrete panel; step four: and the SR seepage-proofing module is adopted to elastically seal the structural seam of the original upstream dam surface below the water level of the reservoir. The invention has the advantages of no need of emptying reservoir during reinforcement, no need of roughening the original concrete panel, less consumption of reinforcing steel bars, high working efficiency, rapid formation of an anti-seepage structure, good anti-seepage performance after reinforcement, good durability and reliability, etc.
Description
Technical Field
The invention relates to the technical field of seepage prevention and reinforcement of a stone dam of a hydraulic and hydroelectric engineering, in particular to a method for rapidly reconstructing a seepage prevention body of an upstream dam face of the stone dam, which is suitable for rapidly reconstructing a seepage prevention body structure of the upstream dam face of the stone dam.
Background
The dam has long history, is one of the earliest dam models adopted in the world, is a hydraulic building formed by grouting stones with certain specification requirements, has the characteristics of simple construction process, available local materials and the like, builds a large number of dams between the 50 th and 90 th of the 20 th century in China, is limited to the technical and economic conditions of the construction period, is influenced by the service environment (temperature, humidity, freeze thawing, radiation and the like) and the self properties (materials, quality and the like), and is operated for decades, and the problems of cracking, denudation and damage and the like of the concrete panels at the upstream of the dam in China are caused, so that dam leakage is caused, if the dam leakage is not treated, the crack is aggravated, and the leakage is further accelerated. At present, aiming at the defect of an upstream concrete panel of a masonry dam, most repairing measures adopt a emptying reservoir to repair the upstream dam face, but the emptying reservoir brings great negative influence and loss to society, economy, environment, ecology and travel, and has great operation difficulty.
Therefore, there is a need to develop a method for quickly reconstructing the dam face seepage-proofing structure of an upstream masonry dam without emptying the 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 masonry dam, which is suitable for seepage-proofing treatment of the masonry dam, ensures seepage-proofing safety of the dam, does not need to empty a reservoir during reinforcement, does not need roughening of an original concrete panel, adopts skeleton reinforcing steel bars for a new seepage-proofing panel, reduces the consumption of the reinforcing steel bars, is quick to construct, is doped with steel fibers for the new seepage-proofing panel, improves seepage-proofing and crack-proofing performance of the concrete, embeds a pipe between the seepage-proofing panels, is filled with low-pressure high-strength micro-expansion mortar, performs grouting treatment on the original concrete panel, performs snap-in connection, ensures that the new pouring panel and the original seepage-proofing panel form a whole body, forms double-insurance seepage-proofing, improves working efficiency, quickly forms a seepage-proofing structure after reinforcement, has good durability and reliability, is feasible to operate and simple in process, the used materials are all existing finished products, and the used tools are common tools and has high construction efficiency; solves the technical problem of rapidly treating the leakage of the concrete panel at the upstream of the masonry dam under the condition that the reservoir cannot be emptied.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a construction method for quickly reconstructing an upstream dam face seepage-proofing body structure of a stone-laying dam is characterized by comprising the following steps: comprises the following steps of the method,
step one: arranging a newly-poured reinforced concrete continuous bracket base along a horizontal full line above the water level of an original concrete seepage-proofing panel warehouse at the upstream side of the disease-risk stone-laying dam; the concrete anti-seepage panel is supported, and meanwhile, the concrete anti-seepage panel is a construction platform for the water-facing side working in the air; the original concrete seepage-proofing panel of the stone-laying dam is connected with the newly-poured reinforced concrete continuous bracket base through newly-poured bracket steel bars, so that the structural stability of the bracket base is ensured;
step two: setting a newly-poured skeleton reinforced steel fiber concrete panel (the thickness of the newly-poured reinforced steel fiber concrete panel is 30cm, the newly-poured skeleton reinforced steel fiber concrete panel adopts skeleton reinforcement, peripheral and middle local reinforcement, the consumption of reinforcement is reduced, construction is rapid, the impermeable panel is doped with steel fibers, the anti-seepage performance of concrete is improved, the steel fibers adopt flat mirror copper steel fibers, the diameter is 0.2mm, the length is 13.0mm, the tensile strength is not lower than 2000 MPa), the newly-poured skeleton reinforced steel fiber concrete panel is connected with a masonry dam original concrete impermeable panel by adopting a buckle, interface glue is coated, the reinforcement is laid and anchored, a flowtube is buried between the newly-poured skeleton reinforced steel fiber concrete panel and the masonry dam original concrete impermeable panel, low-strength micro-expansion mortar (micro-expansion cement+epoxy mortar+additive) is poured after the new panel period, the grouting pressure is controlled to be 0.1 MPa-0.2 MPa, the original concrete panel is not required to be subjected to crack, the original concrete panel is subjected to grouting, the whole construction is carried out, the anti-seepage performance of the original concrete impermeable dam is subjected to rapid construction, and the original concrete impermeable panel is subjected to combined grouting, and the anti-seepage performance is guaranteed;
step three: the newly-poured skeleton reinforced steel fiber concrete panel is positioned above the newly-poured reinforced concrete continuous bracket base;
setting bracket water stop between the newly-poured reinforced concrete continuous bracket base and the newly-poured skeleton reinforced steel fiber concrete panel on the upstream side dam surface of the implemented step two, and ensuring the seepage prevention effect between the structures;
step four: and (3) adopting an SR seepage-proofing module to elastically seal (namely adopting the SR seepage-proofing module to elastically seal and wrap a newly-poured reinforced concrete continuous bracket base as shown in figure 1) the upstream dam surface structure seam (namely the original structure seam) below the water level of the reservoir.
In the technical scheme, in the first step, the newly-poured bracket steel bars are adopted to connect the newly-poured bracket base and the original concrete seepage-proofing panel of the masonry dam, and the newly-poured bracket steel bars penetrate into the original concrete seepage-proofing panel of the masonry dam, so that the stability of a connecting structure is ensured.
In the technical scheme, in the second step, a newly-poured concrete seepage-proofing panel and an original dam face bar are laid (the newly-poured concrete seepage-proofing panel and the original dam face bar are arranged between the newly-poured skeleton reinforced steel fiber concrete panel and the original concrete seepage-proofing panel of the masonry dam, so that the stability of a connecting structure is ensured);
the newly-poured concrete seepage-proofing panel and the original dam face are arranged perpendicular to the dam face and are arranged according to plum blossom shapes, so that the stress and the stability of the structure are ensured.
The newly-poured concrete seepage-proofing panel is bent with the exposed end of the original dam face embedded bar and welded with the surface layer bar of the newly-poured skeleton bar reinforced steel fiber concrete panel, so that the stability of the connecting structure is ensured;
the framework steel bars are arranged in the newly-poured framework steel fiber reinforced concrete panel, the newly-poured framework steel fiber reinforced concrete panel adopts framework steel bars, the periphery and the middle are locally reinforced, the consumption of the steel bars is reduced, and the construction is rapid; and steel fibers are doped in the newly-poured skeleton reinforced steel fiber concrete panel (namely the seepage-proofing panel), so that the seepage-proofing and crack-proofing performance of the concrete is improved.
In the technical scheme, in the second step, the newly-poured skeleton reinforced steel fiber concrete panel is poured in layers, and before each layer of concrete is poured, the interlayer joint surface is treated according to the requirements of construction specifications;
and a copper water stop sheet and an asphalt fir board of a newly-poured concrete impermeable panel are arranged between the seams of the newly-poured skeleton reinforced steel fiber concrete panels (namely, the inter-seam surfaces of the newly-poured skeleton reinforced steel fiber concrete panels), so that the impermeable effect of the structure is ensured.
In the technical scheme, in the fourth step, the SR seepage-proofing module is connected with the copper water-proofing sheet of the newly-poured concrete seepage-proofing panel in a nested manner, so that the water-proofing effect is achieved, and the seepage-proofing effect of the structure is ensured.
In the technical scheme, the SR anti-seepage module is elastically stopped at the original concrete anti-seepage panel of the masonry dam, the newly-poured reinforced concrete continuous bracket base and the newly-poured skeleton reinforced steel fiber concrete panel, so that the anti-seepage effect between structures is ensured.
In the technical scheme, the SR seepage-proofing module elastic water stop 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 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 adjacent two masonry dams;
the SR cover plate is wrapped on the periphery of the SR plastic filler structure and fixed on the original concrete seepage-proofing panel of the adjacent two masonry dams, so that the seepage-proofing effect is improved.
The invention has the following advantages:
according to the construction method for quickly reconstructing the impermeable body structure of the upstream dam face of the masonry dam, disclosed by the invention, the reservoir is not required to be emptied during reinforcement, the original concrete panel is not required to be roughened, the consumption of materials such as reinforcing steel bars is less, the working efficiency is improved, an impermeable structure is quickly formed, the reinforced impermeable structure is good in impermeable performance, high in durability and reliability, feasible to operate and simple in process, all materials are existing finished products, all used tools are common tools, and the construction efficiency is high;
the invention effectively solves the technical problem of rapidly treating the leakage of the concrete panel at the upstream of the starching stone dam under the condition that the reservoir cannot be emptied, provides a new thought for the seepage prevention reconstruction of the upstream dam face of the starching stone dam, and can provide references for similar engineering. Under the condition that the reservoir is not empty, the invention plays a role of supporting the concrete impermeable panel by arranging the newly-poured reinforced concrete continuous bracket base along the horizontal direction on the water level of the original concrete impermeable panel reservoir at the upstream side of the disease-risk stone dam, and becomes a construction platform for the temporary working at the water side; the newly-poured skeleton reinforced steel fiber concrete panel adopts skeleton reinforced steel, the periphery and the middle are locally reinforced, the consumption of the reinforced steel 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 panel (namely the newly-poured skeleton reinforced steel fiber concrete panel and the masonry dam original concrete seepage-proofing panel) is connected by adopting the embedded buckle and the low-pressure high-strength micro-expansion mortar is poured into the embedded flower pipe, the original concrete panel does not need roughening, the construction is quick, the original panel crack is grouted, the whole body of the newly-poured skeleton reinforced steel fiber concrete panel and the masonry dam original concrete seepage-proofing panel is ensured, the dual-insurance seepage-proofing is formed, and the structure seepage-proofing performance is quickly improved.
Drawings
FIG. 1 is a block diagram of the invention for rapidly reconstructing the impermeable body of the upstream dam face of a masonry dam.
FIG. 2 is a cross-sectional view of an upstream dam face seepage-proofing body of a rapid reconstruction masonry dam according to the present invention.
Fig. 3 is a schematic structural view of a skeleton reinforced steel fiber reinforced concrete panel in the present invention.
FIG. 4 is a schematic view showing a water-stop joint at the bottom of the panel according to the present invention.
FIG. 5 is a schematic diagram of an SR impermeable module of the present invention.
Fig. 6 is a flow chart of the present invention.
In the figure, the steel bar reinforced concrete composite slab comprises a 1-masonry dam original concrete impermeable panel, a 2-freshly cast steel bar concrete continuous bracket base, a 3-freshly cast skeleton steel bar steel fiber concrete panel, 4-bracket water stop, 5-panel bottom part seam water stop, 6-SR impermeable module elastic water stop, 7-embedded buckles, 8-freshly cast concrete impermeable panel and original dam face steel bar planting, 9-freshly cast bracket steel bars, 10-freshly cast concrete impermeable panel copper water stop sheets, 11-original structural joints, 12-SR plastic fillers, 13-SR cover plates, 14-flower pipes and 15-skeleton steel bars.
Detailed Description
The following detailed description of the invention is, therefore, not to be taken in a limiting sense, but is made merely by way of example. While making the advantages of the present invention clearer and more readily understood by way of illustration.
The invention provides a method for reconstructing an impermeable body structure of an upstream dam face of a stone-laying dam when a reservoir does not have a emptying condition; the main implementation content of the invention is as follows: the reinforced concrete continuous bracket base is arranged above the water level of the reservoir, a thin skeleton reinforced steel fiber concrete panel (thickness 30 cm) is rebuilt at the upper part of the bracket, and the dam face structural joint below the bracket is repaired by adopting an underwater SR seepage-proofing module by elastic water stop. The reinforced fiber reinforced concrete panel with the reconstructed skeleton adopts skeleton reinforced bars, the periphery and the middle are locally reinforced, the consumption of the reinforced 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 skeleton reinforced steel fiber concrete panel is connected with the original dam surface by adopting an embedding buckle, is coated with interface glue and is anchored by planting ribs, and is embedded with a flower pipe to be filled with low-pressure high-strength micro-expansion mortar, and SR elastic water stop is connected with a copper sheet of the newly-built seepage-proof panel in a water stop embedding way. The structure and the construction method do not need to empty the reservoir when being adopted for reinforcement, the original concrete panel does not need to be roughened, the consumption of materials such as steel bars and the like is small, the seepage-proofing performance after reinforcement is good, and the durability and the reliability are good; solves the technical problem of rapidly treating the leakage of the concrete panel at the upstream of the masonry dam under the condition that the reservoir cannot be emptied. According to the invention, a reservoir is not required to be emptied, a raw concrete panel does not need roughening, a continuous bracket base is adopted to provide a water side construction platform, steel fibers are doped in the panel, the anti-seepage and anti-cracking performance of concrete is improved, the use amount of steel bars is reduced by adopting skeleton steel bars, the original panel crack is treated by grouting low-pressure high-strength micro-expansion mortar by adopting a pre-buried flower pipe, the anti-seepage is realized by dual insurance of the original panel and a newly poured panel, the integrity of the new and old panels (namely the newly poured skeleton steel fiber reinforced concrete panel and the original concrete anti-seepage panel of the masonry dam) is improved by embedding and buckling connection, and the rapid reconstruction of an anti-seepage body of an upstream dam face of the masonry dam is realized.
Examples
The invention is now described in detail by taking the reconstruction reinforcement of the seepage-proofing body of the upstream dam face of the masonry dam for a certain reservoir as an embodiment, and the invention has guiding function in the seepage-proofing reinforcement of the masonry dam for other hydraulic and hydroelectric engineering diseases.
The dam body of a certain reservoir is originally designed to be impermeable, and the dam body is commonly leaked due to poor masonry quality of the slurry stone; the concrete seepage-proofing panel is built on the upstream dam face for seepage prevention in the 80 s, and is manually mixed and is not compact due to poor material quality and construction conditions at the time, so that the concrete panel is seriously damaged at present, cracks exist on the surface, sand and stone materials are exposed, and an aluminum sheet water stop part is invalid, so that water seepage in a gallery is serious.
The concrete anti-seepage panel is thinner, the problems that the underwater construction is difficult, the reinforcement quality is difficult to control and the like exist in the large-area repairing of the concrete panel, and the feasible scheme is to dismantle and rebuild the concrete anti-seepage panel and reform the water stop of the original structural joint. The concrete impermeable panel is dismantled and rebuilt to be constructed in dry land, and a cofferdam must be built upstream of the masonry dam and a tunnel emptying reservoir must be newly built. The construction method has the advantages that the temporary engineering amount of cofferdams and the like is large, the arrangement of newly-built cavitations is difficult, the line is long, the problems of diversion, foundation pit drainage, flood control and the like are also involved in the construction period, the construction difficulty is large, and the temporary engineering investment is large.
The main structure of the seepage-proofing body of the upstream dam face of the reservoir rapid reconstruction stone dam of the embodiment is as follows:
and a newly-poured reinforced concrete continuous bracket base 2 is arranged above the water level of the storage, a thin concrete seepage-proofing panel (namely a newly-poured framework 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 dam surface structural joints below the bracket are repaired by adopting an underwater SR seepage-proofing module elastic water stop 6. The reconstructed concrete panel (namely the newly-poured skeleton reinforced steel fiber concrete panel 3) is in embedded connection with the original dam surface (namely the original concrete seepage-proofing panel 1 of the masonry dam), interface glue is coated, the reinforcement is planted and anchored, and the SR seepage-proofing module elastic water stop 6 is in embedded connection with the copper water stop sheet 10 of the newly-poured concrete seepage-proofing panel between the seams of the newly-poured skeleton reinforced steel fiber concrete panel 3.
As shown in fig. 5, the construction method of the structure for performing seepage-proofing reconstruction by adopting the invention on the upstream dam surface of the rock-fill dam of a certain reservoir in the embodiment is as follows:
step one: the newly-poured reinforced concrete continuous bracket base 2 is arranged 50cm above the water level of the original concrete impermeable panel 1 of the stone dam at the upstream side of the disease-risk stone dam along the horizontal direction, the height of the newly-poured reinforced concrete continuous bracket base 2 is 1m, the end part is 50cm in height and 50cm in width (as shown in fig. 2), and in the embodiment, the slope ratio of the newly-poured reinforced concrete continuous bracket base is 1:1.
In the first step, a newly-poured bracket steel bar 9 is adopted to connect the newly-poured reinforced concrete continuous bracket base 2 and the masonry dam original concrete seepage-proofing panel 1, and the newly-poured bracket steel bar 9 penetrates into the masonry dam original concrete seepage-proofing panel 1 by 90cm;
step two: the contact surface is washed clean by a high-pressure water gun and air-dried;
step three: setting a new skeleton reinforced steel fiber concrete panel 3 (the thickness is 30 cm-50 cm) on the dam surface at the upstream side above the water level of the reservoir subjected to the second step, connecting the new skeleton reinforced steel fiber concrete panel 3 with the original concrete impermeable panel 1 of the masonry dam by adopting a snap fastener 7, brushing interface glue, laying planting ribs and anchoring, embedding a floral tube 14 between the panels (namely between the new skeleton reinforced steel fiber concrete panel and the original concrete impermeable panel of the masonry dam), and pouring low-pressure high-strength micro-expansion mortar to ensure that the new skeleton reinforced steel fiber concrete panel 3 and the original concrete impermeable panel 1 of the masonry dam form a whole;
the laying of the plant bars is specifically as follows: laying a new cast concrete seepage-proofing panel with a certain length and original dam face planting ribs 8 (phi 16-phi 20); the newly-poured concrete seepage-proofing panel and the original dam face planting bars 8 are arranged in a quincuncial shape, the interval is 1.5 m-2 m, the exposed end is bent for 10cm and is effectively welded with the surface layer steel bars of the newly-poured skeleton steel bar fiber reinforced concrete panel 3, and the construction is to avoid damaging the original dam face steel bars of the original concrete seepage-proofing panel 1 of the masonry dam;
the steel fiber reinforced concrete panel 3 of the newly-poured skeleton should ensure layered pouring when pouring, before each layer of concrete is poured, the interlayer joint surface should be treated according to the requirements of construction specifications; the bottom concrete strength should reach 70% of the design strength and the form can be removed;
a copper water stop sheet 10 of a newly-poured concrete impermeable panel and a 2cm thick asphalt fir board are arranged between 3 joints of the newly-poured skeleton reinforced steel fiber concrete panel;
step four: setting bracket position 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 side dam surface of the implemented step three, wherein the bracket position water stop 4 is made of the same material as the SR seepage-proofing module elastic water stop 6;
step five: sealing (wrapping the newly poured reinforced concrete continuous bracket base 2) the structural joint of the original upstream dam surface below the water level of the reservoir by adopting an SR seepage prevention module elastic water stop 6 on the upstream dam surface of the implemented step four; the SR seepage-proofing module elastic water stop 6 is connected with a copper water stop sheet 10 of a newly-poured concrete seepage-proofing panel in a nested manner;
the construction steps below the pool level are performed by the diver.
Conclusion: the method is feasible in operation and simple in process, all materials are existing finished products, all used tools are common tools, and the construction efficiency is high; according to the method, under the condition that a certain reservoir cannot be emptied, the impermeable body of the upstream dam face of the stone-laying dam is quickly reconstructed and reinforced, and after reconstruction and reinforcement, the impermeable performance is good, so that the seepage safety of the dam can be ensured.
In order to more clearly illustrate the advantages of the construction method for quickly reconstructing the impermeable body structure of the upstream dam face of the masonry dam compared with the prior art, workers compare the two technical schemes, and the comparison results are shown in the following table:
compared with the prior art, the construction method of the rapid reconstruction stone dam upstream dam face seepage-proofing body structure does not need to empty a reservoir during reinforcement, the original concrete panel does not need to be roughened, the consumption of materials such as steel bars is small, the working efficiency is improved, the seepage-proofing structure is rapidly formed, and the reinforced seepage-proofing structure has good seepage-proofing performance, durability and reliability.
Other non-illustrated parts are known in the art.
Claims (7)
1. A construction method for quickly reconstructing an upstream dam face seepage-proofing body structure of a stone-laying dam is characterized by comprising the following steps: comprises the following steps of the method,
step one: a newly-poured reinforced concrete continuous bracket base (2) is arranged along a horizontal full line above the water level of an original concrete seepage-proofing panel (1) of the disease-risk stone-laying dam at the upstream side of the disease-risk stone-laying dam;
step two: setting a new skeleton reinforced steel fiber concrete panel (3) on the dam surface at the upstream side above the water level of the reservoir in the first step, connecting the new skeleton reinforced steel fiber concrete panel (3) with the original concrete impermeable panel (1) of the masonry dam by adopting a snap fastener (7), brushing interface glue, laying and anchoring the planted bars, burying a flower pipe (14) between the original concrete impermeable panel (1) of the masonry dam and the new skeleton reinforced steel fiber concrete panel (3), pouring low-pressure high-strength micro-expansion mortar, grouting the crack of the original concrete impermeable panel (1) of the masonry dam, and simultaneously ensuring that the new skeleton reinforced steel fiber concrete panel (3) and the original concrete impermeable panel (1) of the masonry dam form a double-insurance whole;
step three: setting a bracket water stop (4) between a newly-poured reinforced concrete continuous bracket base (2) and a newly-poured framework reinforced steel fiber concrete panel (3) on the upstream side dam surface of the implemented step two;
step four: an SR seepage-proofing module is adopted to seal the structural joint of the original upstream dam facing below the water level of the reservoir on the upstream dam facing in the implemented step three, and the SR seepage-proofing module is adopted to wrap a newly-poured reinforced concrete continuous bracket base (2) by the elastic water stop;
the SR seepage-proofing module elastic water stop (6) comprises a SR plastic filler structure (12) and a SR cover plate (13).
2. The construction method of the rapid reconstruction stone dam upstream face seepage-proofing body structure according to claim 1, wherein the construction method comprises the following steps: in the first step, a newly-poured bracket base (2) of reinforced concrete is connected with an original concrete seepage-proofing panel (1) of the masonry dam by adopting newly-poured bracket steel bars (9), and the newly-poured bracket steel bars (9) penetrate into the original concrete seepage-proofing panel (1) of the masonry dam.
3. The construction method of the rapid reconstruction stone dam upstream face seepage-proofing body structure according to claim 2, wherein the construction method comprises the following steps: in the second step, laying a newly-poured concrete seepage-proofing panel and original dam face planting bars (8);
the newly poured concrete seepage-proofing panel and the original dam surface embedded ribs (8) are arranged vertically to the dam surface and are arranged in a quincuncial shape;
the newly-poured concrete seepage-proofing panel is bent with the exposed end of the original dam face embedded bar (8) and welded with the face layer bar of the newly-poured skeleton bar reinforced steel fiber concrete panel (3);
and skeleton steel bars (15) are arranged in the newly poured skeleton steel fiber reinforced concrete panel (3).
4. A method of constructing a rapid reconstruction masonry dam upstream dam face seepage-proofing structure according to claim 3, wherein: in the second step, the newly-poured skeleton reinforced steel fiber concrete panel (3) is poured in layers, and before each layer of concrete is poured, the interlayer joint surface is treated according to the construction specification;
the copper water stop sheet (10) and the asphalt fir board of the newly-poured concrete impermeable panel are arranged between the seams of the newly-poured skeleton reinforced steel fiber concrete panel (3).
5. The construction method of the rapid reconstruction stone dam upstream face seepage-proofing body structure according to claim 4, wherein the construction method comprises the following steps: in the fourth step, the SR seepage-proofing module elastic water stop (6) is connected with a copper water stop sheet (10) of a newly-poured concrete seepage-proofing panel in a nested way.
6. The construction method of the rapid reconstruction stone dam upstream face seepage-proofing body structure according to claim 5, wherein the construction method comprises the following steps: the SR seepage-proofing module elastic water stop (6) is arranged on the original concrete seepage-proofing panel (1) of the masonry 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 of the rapid reconstruction stone dam upstream face seepage-proofing body structure according to claim 6, wherein the construction method comprises the following steps: the original structural joint (11) is positioned between the original concrete seepage-proofing panels (1) of two adjacent masonry dams; the SR plastic filler structure (12) is positioned in the original structural joint (11) and is positioned at the joint of the original concrete seepage-proofing panels (1) of two adjacent masonry dams;
the SR cover plate (13) is wrapped on the periphery of the SR plastic filler structure (12) and is fixed on the original concrete seepage-proofing panel (1) of two adjacent masonry dams.
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| 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 |
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| 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 |
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| CN114718021A CN114718021A (en) | 2022-07-08 |
| CN114718021B true CN114718021B (en) | 2023-05-26 |
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| 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 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778789B (en) * | 2018-04-04 | 2020-08-25 | 水利部交通运输部国家能源局南京水利科学研究院 | Concrete panel rock-fill dam panel goaf underwater repair system |
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Patent Citations (4)
| 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 |
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