CN217231678U - Novel rock-fill dam prevention of seepage panel structure - Google Patents
Novel rock-fill dam prevention of seepage panel structure Download PDFInfo
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- CN217231678U CN217231678U CN202220017915.3U CN202220017915U CN217231678U CN 217231678 U CN217231678 U CN 217231678U CN 202220017915 U CN202220017915 U CN 202220017915U CN 217231678 U CN217231678 U CN 217231678U
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Abstract
The utility model discloses a novel rock-fill dam prevention of seepage panel structure, including laying the ECC panel at the dam body domatic, laid the lubricant film between ECC panel and the dam body domatic, ECC panel bottom surface is equipped with a plurality of saliences, the dam body domatic is sunken to form a plurality of recesses that match with the saliences, the saliences are located in the recess, the lubricant film is located between the saliences and the recess; the utility model discloses replace traditional ordinary concrete panel for the ECC panel, become the panel of original rigidity relatively flexible, the ECC material has extremely strong extending ability, can satisfy the crack control requirement under the shrinkage deformation, and ECC panel rigidity is less than ordinary concrete panel simultaneously and can initiatively adapt to the rockfill material and warp, can effectively alleviate the panel crack that the rock-fill body non-uniform deformation arouses.
Description
Technical Field
The utility model belongs to hydraulic and hydroelectric engineering field especially relates to a novel rock-fill dam prevention of seepage panel construction.
Background
The concrete face rockfill dam is one of important dam types in hydraulic structures, has the characteristics of short construction period, full utilization of local materials, convenience in mechanical construction, convenience in maintenance and the like, and is rapidly developed in recent years. Concrete face cracking is one of the common diseases of the rock-fill dam, and the over-concrete face cracking occurs in many important rock-fill dam projects. The panel is easy to crack and becomes one of important factors for restricting the development of the panel rock-fill dam.
The concrete face is generally used as an anti-seepage body, water pressure is transmitted to a rockfill area through a cushion area, and the rockfill body is used as a main supporting body of the dam body. The rockfill dam body can produce uneven settlement because external load effect and self rheological deformation, because the deformation modulus and the rockfill material difference of concrete panel are great, the concrete panel is difficult to avoid and is kept harmonious deformation with the rockfill dam body, the phenomenon of coming to nothing can appear in the panel bottom, the panel at the position of coming to nothing will produce corresponding bending deformation under the effect of upstream huge water pressure, produce partial tensile stress then, if tensile stress is higher than the tensile strength of concrete, then structural crack will appear on the panel. In addition, certain constraint exists inevitably between the concrete panel and the cushion layer or the extrusion side wall, the variable temperature shrinkage and the drying shrinkage of the concrete panel in the construction period and the operation period can also generate tensile stress when being constrained, and when the tensile stress exceeds the tensile strength of the concrete, the temperature crack can occur on the concrete panel. Engineering practices show that shrinkage deformation and vertical void of a concrete panel along a slope surface are main reasons for cracking and leakage of panel concrete, and the traditional reinforced concrete panel is too high in rigidity and insufficient in flexibility and cannot adapt to the shrinkage deformation in the upward slope direction and the uneven deformation of a dam body, which are main reasons for cracking and further leakage.
The Chinese patent with the application number of CN201710143012.3 discloses a concrete face rockfill dam face plate structure, which comprises face plate units arranged on the slope surface of a rockfill dam body, wherein a cushion layer area and a transition layer area are sequentially paved between the face plate units and the slope surface of the rockfill dam body from outside to inside, a supporting pier is arranged between the face plate units and the rockfill dam body, a rubber support is arranged between the contact surfaces of the face plate units and the supporting pier, and a water stopping device is arranged between two adjacent face plate units.
The panel structure effectively reduces the influence of uneven stress deformation of the dam body on the cracking and the damage of the panel in a mode of force transmission of the rubber support and force bearing of the supporting pier; the bottom surface of the concrete panel is adhered with the carbon fiber cloth, so that the strength of the panel is greatly improved, and meanwhile, the permeability of the panel is reduced. The water stopping facility with the panel structure has good water stopping effect; the reinforced concrete panel of the panel structure is prefabricated, so that the engineering progress can be effectively accelerated, and meanwhile, the quality of the panel can be guaranteed. Although the panel structure can make the stress on the panel more uniform, the stress on the panel does not disappear or weaken, and the panel still cracks when the stress on the panel exceeds the maximum stress which the panel can bear.
The Chinese patent with the application number of CN201910663386.7 discloses a concrete panel rock-fill dam for improving the stress deformation state of a panel, which comprises a concrete panel, a cushion layer, a transition layer, a mold-increasing main rock-fill area, a secondary rock-fill area, a downstream protection slope and a drainage prism, wherein the concrete panel, the cushion layer, the transition layer, the mold-increasing main rock-fill area, the secondary rock-fill area, the downstream protection slope and the drainage prism are sequentially arranged from upstream to downstream; the downstream side boundary of the mold-added main rockfill area includes a dam axis upstream side portion parallel to the upstream dam slope and a dam axis downstream side portion horizontally disposed and extending to the inside of the downstream slope protection.
The concrete faced rockfill dam has the following advantages:
(1) by arranging the mold-increasing main rockfill area between the transition layer and the main rockfill area, the mold-increasing main rockfill area has stronger deformation resistance, and the influence of water storage on the deformation of the upstream side of the dam body is effectively reduced;
(2) the main rockfill area and the mold-increasing main rockfill area are arranged at the position above 0.5 times of the height elevation of the dam, so that the influence degree of deformation of the middle upper part of the dam body on water storage is effectively weakened, and the later deformation of the middle upper part of the dam body can be effectively reduced;
(3) the adverse stress deformation state of the concrete panel caused by dam body deformation caused by water storage is avoided or weakened, the possibility that the concrete panel is subjected to problems of hollowing, collapse, extrusion damage and the like is reduced, the safety of the concrete panel rock-fill dam is improved, the construction of a high or ultrahigh concrete panel rock-fill dam is facilitated, and the method can provide benefits for deep development of hydropower in southwest areas of China.
Although the face rockfill dam can avoid or weaken the adverse stress deformation state of the concrete face caused by dam body deformation caused by water storage, and reduce the possibility of the concrete face to have problems of void, collapse, extrusion damage and the like, the face rockfill dam is subjected to a plurality of stress reasons, the scheme can only aim at the stress caused by the water storage, and has no great effect on the influence of the stress caused by other reasons on the face rockfill dam.
Therefore, it is necessary to design a rock-fill dam panel that can cope with the influence of the internal stress of the panel caused by various factors on the panel.
Disclosure of Invention
The utility model aims at providing a novel rockfill dam prevention of seepage panel structure has solved current rockfill dam concrete panel and has received the problem that great stress is easily cracked.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a novel rock-fill dam prevention of seepage panel structure, is including laying at the domatic ECC panel of dam body, the ECC panel with the lubricating layer has been laid between the dam body is domatic, ECC panel bottom surface is equipped with a plurality of salients, the domatic sunken formation of dam body a plurality of with protruding matched with recess, the protrusion is located in the recess, the lubricating layer be located protrudingly with between the recess.
The utility model discloses replace traditional ordinary concrete panel for the ECC panel, the ECC panel forms for the pouring of fiber reinforced cement base combined material ECC, its slump requires control at 30mm ~ 70mm, fiber reinforced cement base combined material ECC has big deformation, high toughness, characteristics such as crack dispersion, the panel with original rigidity has become relative flexible panel, the ECC material has extremely strong extending ability, can satisfy crack control requirement under the shrink deformation, ECC panel rigidity is less than ordinary concrete panel can initiatively adapt to the rockfill material and warp simultaneously, can effectively alleviate the panel crack that the inhomogeneous deformation of rockfill body arouses.
The utility model discloses a set up the lubricant film between ECC panel and dam body are domatic, reduce the restraint of ECC panel, guarantee ECC panel free shrinkage, the risk of fracture when reducing the ECC panel shrinkage, the ECC panel bonds with the lubricant film and is in the same place.
The utility model discloses a protruding mutually supporting with the recess that sets up, it is spacing to carry out the ECC panel, make the ECC panel in can freely stretch out and draw back, big skew can not take place for its main part position, the ECC panel is laid on the lubricant film, the purpose reduces the restraint that the ECC panel bottom surface was received, nevertheless can reduce the frictional force that the ECC panel bottom surface received simultaneously, the ECC panel has the risk of lapse, the ECC panel is supported by the toe board, the pressure that the toe board bore can increase, through protruding mutually supporting with the recess that sets up, can block the ECC panel lapse, transmit the dam body with more of gravity of ECC panel on, reduce the pressure that comes from the ECC panel that the toe board received.
Further, the ECC panel with the toe board of the unrestrained wall of the dam body top and bottom is all connected, and the junction leaves the stagnant water seam, be equipped with the stagnant water structure in the stagnant water seam, the stagnant water structure includes copper stagnant water and rubber waterstop, plays waterproof effect, avoids the dam to leak.
Further, the bottom of the water stopping structure is provided with an edge sealing agent, so that the water stopping effect of the water stopping structure is further enhanced.
Furthermore, a steel bar is arranged in the ECC panel to strengthen the structural strength of the ECC panel.
Furthermore, the lubricating layer is one or more of an emulsified asphalt layer, an asphalt felt layer and a geomembrane layer, and can play a role in water prevention while being beneficial to free expansion and contraction of the ECC panel.
Furthermore, the cover weight is arranged at the bottom of the dam body in a covering mode, and the dam body and the ECC panel are protected.
Furthermore, a concrete panel is arranged between the ECC panel and the lubricating layer and is formed by pouring common concrete materials, the concrete panel has the characteristics of high rigidity and strength and can well protect the dam body, after the concrete cracks along with the slope change of the dam body, the ECC panel also deforms along with the concrete panel, but the crack is small, and the waterproof effect is still achieved.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses replace traditional ordinary concrete panel into ECC panel, become original rigid panel into relative flexible panel, the ECC material has extremely strong extensibility, can satisfy crack control requirement under the shrinkage deformation, and ECC panel rigidity is less than ordinary concrete panel simultaneously and can initiatively adapt to the rockfill material and warp, can effectively alleviate the panel crack that the inhomogeneous deformation of rockfill body arouses.
(2) The utility model discloses a set up the lubricant film between ECC panel and dam body are domatic, reduce the restraint of ECC panel, guarantee ECC panel free shrinkage, the risk of fracture when reducing the ECC panel shrinkage.
(3) The utility model discloses a protruding mutually supporting with the recess that sets up, it is spacing to carry out the ECC panel, make the ECC panel in can freely stretch out and draw back, big skew can not take place for its main part position, the ECC panel is laid on the lubricant film, the purpose reduces the restraint that the ECC panel bottom surface was received, nevertheless can reduce the frictional force that the ECC panel bottom surface received simultaneously, the ECC panel has the risk of lapse, the ECC panel is supported by the toe board, the pressure that the toe board bore can increase, through protruding mutually supporting with the recess that sets up, can block the ECC panel lapse, transmit the dam body with more of gravity of ECC panel on, reduce the pressure that comes from the ECC panel that the toe board received.
Drawings
Fig. 1 is a structural schematic view of an impermeable face plate of a novel rock-fill dam in embodiment 1;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a schematic structural view of an impermeable face plate of the novel rock-fill dam in example 2;
FIG. 5 is an enlarged view of a portion of the structure of FIG. 4 at C;
in the figure: 1. a dam body; 2. an ECC panel; 3. a lubricating layer; 4. protruding; 5. a wave wall; 6. a toe plate; 7. a water stop structure; 8. an edge sealing agent; 9. the cover is heavy; 10. a concrete panel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the drawings in the present application, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-3, this embodiment provides a novel rock-fill dam seepage prevention panel structure, including laying at 1 domatic ECC panel 2 of dam, ECC panel 2 with lubricating layer 3 has been laid between 1 domatic of dam, 2 bottom surfaces of ECC panel are equipped with a plurality of outstanding 4, 1 domatic sunken formation of dam a plurality of with outstanding 4 matched with recess, outstanding 4 is located in the recess, lubricating layer 3 is located outstanding 4 with between the recess.
The utility model discloses replace traditional ordinary concrete panel with ECC panel 2, ECC panel 2 forms for the pouring of fiber reinforced cement base combined material ECC, its slump requires control at 30mm ~ 70mm, fiber reinforced cement base combined material ECC has big deformation, high toughness, characteristics such as crack dispersion, the panel with original rigidity has become relative flexible panel, the ECC material has extremely strong extending ability, can satisfy crack control requirement under the shrink deformation, 2 rigidity of ECC panel are less than ordinary concrete panel and can initiatively adapt to the rockfill material and warp simultaneously, can effectively alleviate the panel crack that the rock-fill body non-uniform deformation arouses.
The utility model discloses a set up lubricating layer 3 between ECC panel 2 and dam body 1 are domatic, reduce the restraint of ECC panel 2, guarantee ECC panel 2 freely contracts, the risk of fracture when reducing ECC panel 2 contracts, ECC panel 2 bonds with lubricating layer 3 and is in the same place.
The utility model discloses a mutually supporting of the outstanding 4 that set up and recess, it is spacing to ECC panel 2, make ECC panel 2 in can freely stretch out and draw back, big skew can not take place for its main part position, ECC panel 2 is laid on lubricant film 3, the purpose reduces the restraint that ECC panel 2 bottom surfaces received, but can reduce the frictional force that ECC panel 2 bottom surfaces received simultaneously, ECC panel 2 has the risk of lapse, ECC panel 2 is supported by toe board 6, the pressure that toe board 6 bore can increase, through mutually supporting of the outstanding 4 that sets up and recess, can block ECC panel 2 lapse, transmit dam body 1 with ECC panel 2's gravity more, reduce the pressure that comes from ECC panel 2 that toe board 6 received.
Further, the ECC panel 2 with the breakwater wall 5 at the top of the dam body 1 and the toe board 6 at the bottom are all connected, and the junction leaves a water stopping seam, and the ECC panel 2 is poured once as much as possible, if it is difficult to pour once, then the segmentation is poured, and this embodiment adopts the segmentation to pour, also leaves a water stopping seam between the adjacent sections, be equipped with stagnant water structure 7 in the water stopping seam, stagnant water structure 7 includes copper stagnant water and rubber waterstop, plays waterproof effect, avoids the dam to leak.
Further, the bottom of the water stopping structure 7 is provided with a sealing edge agent 8, so that the water stopping effect of the water stopping structure 7 is further enhanced.
Furthermore, a steel bar is arranged in the ECC panel 2 to strengthen the structural strength of the ECC panel 2.
Further, the lubricating layer 3 is an emulsified asphalt layer, which is beneficial to the free extension and contraction of the ECC panel 2 and can play a waterproof role.
Further, the bottom of the dam body 1 is covered with a cover weight 9 to protect the dam body 1 and the ECC panel 2.
Example 2
As shown in fig. 4 and fig. 5, the difference between this embodiment and embodiment 1 is that a concrete panel 10 is disposed between the ECC panel 2 and the lubricating layer 3, the concrete panel 10 is made of a common concrete material by casting, the protrusion 4 disposed on the bottom surface of the ECC panel 2 penetrates through the concrete panel 10 and is still located in the groove matched with the concrete panel, the concrete panel 10 has the characteristics of high rigidity and high strength, and can better protect the dam 1, after the concrete cracks along with the change of the slope surface of the dam 1, the ECC panel 2 also deforms along with the concrete panel 10, but the crack is small, and still has a waterproof effect, by disposing the concrete panel 10 and the ECC panel 2, the effects of preventing water and seepage and protecting the dam 1 can be achieved at the same time, and the present embodiment can also be applied to the reconstruction of an old dam 1, the ECC panel 2 is laid on the concrete panel 10 on the surface of the old dam 1, used for water prevention and seepage control.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a novel rock-fill dam prevention of seepage panel structure, a serial communication port, including laying at the domatic ECC panel of dam body, the ECC panel with the lubricant film has been laid between the domatic dam body, ECC panel bottom surface is equipped with a plurality of salients, the domatic sunken formation of dam body a plurality of with outstanding matched with recess, the salient is located in the recess, the lubricant film is located outstanding with between the recess.
2. The novel seepage-proofing panel structure of rock-fill dam as claimed in claim 1, wherein said ECC panel is connected to both the wave wall at the top and toe board at the bottom of the dam body, and a water-stopping seam is left at the connection, and a water-stopping structure is arranged in said water-stopping seam.
3. The new seepage-proofing panel structure of rockfill dam as claimed in claim 2, wherein the bottom of said water-stopping structure is provided with edge-sealing agent.
4. The novel rock-fill dam seepage prevention panel structure as claimed in claim 1, wherein a steel bar is arranged in the ECC panel.
5. The novel rock-fill dam impervious face plate structure as claimed in claim 1, wherein said lubricating layer is one or more of an emulsified asphalt layer, an asphalt felt layer and a geomembrane layer.
6. The new face structure of seepage-proofing rockfill dam of claim 1, wherein the bottom cover of the dam body is provided with a cover weight.
7. The new seepage-proofing panel structure of rockfill dam as claimed in claim 1, wherein a concrete panel is provided between said ECC panel and said lubricating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220017915.3U CN217231678U (en) | 2022-01-05 | 2022-01-05 | Novel rock-fill dam prevention of seepage panel structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220017915.3U CN217231678U (en) | 2022-01-05 | 2022-01-05 | Novel rock-fill dam prevention of seepage panel structure |
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| CN217231678U true CN217231678U (en) | 2022-08-19 |
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| CN202220017915.3U Active CN217231678U (en) | 2022-01-05 | 2022-01-05 | Novel rock-fill dam prevention of seepage panel structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005609A (en) * | 2022-12-31 | 2023-04-25 | 南方电网调峰调频发电有限公司工程建设管理分公司 | Protective structure of asphalt concrete face rockfill dam and construction method |
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2022
- 2022-01-05 CN CN202220017915.3U patent/CN217231678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005609A (en) * | 2022-12-31 | 2023-04-25 | 南方电网调峰调频发电有限公司工程建设管理分公司 | Protective structure of asphalt concrete face rockfill dam and construction method |
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