CN217078645U - Clay core wall rock-fill dam structure - Google Patents
Clay core wall rock-fill dam structure Download PDFInfo
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- CN217078645U CN217078645U CN202220700372.5U CN202220700372U CN217078645U CN 217078645 U CN217078645 U CN 217078645U CN 202220700372 U CN202220700372 U CN 202220700372U CN 217078645 U CN217078645 U CN 217078645U
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Abstract
The utility model relates to a clay core rock-fill dam structure, it is including being fixed in the clay core in river course, the filler layer of making by the stone is all laid to the both sides of clay core along the rivers direction, the river course is laid equally in the filler layer, is located the first bank protection of making by the lead wire cage stone and the second bank protection of making by precast concrete piece are laid to the filler layer on clay core upper reaches, first bank protection and second bank protection all are located one side that the filler layer deviates from the clay core, just the second bank protection is located the top of first bank protection, are located the second bank protection has been laid equally to one side that the filler layer in clay core low reaches deviates from the clay core. The application has the effect of improving the seepage-proofing performance of the dam.
Description
Technical Field
The utility model belongs to the technical field of dykes and dams construction technique and specifically relates to a clay core rock-fill dam structure is related to.
Background
Nowadays, in order to perform hydroelectric power generation or flood control in a river, a dam is usually constructed at the river. And the kind of dykes and dams has the multiple, and some dykes and dams include the clay core wall of being made by cohesive soil and set up the packing layer in clay core wall both sides along the rivers direction in the river course, and the packing layer is laid by the stone and is made, and clay core wall and packing layer all fixed connection are in the river course. When in use, the dam has better blocking effect on water flow, and the water storage capacity at the upstream of the dam is improved.
Aiming at the related technologies, the inventor finds that cavities or cracks are easily generated on two sides of the dam due to the washing of water flow, the stability of the dam is weakened, and the seepage-proofing performance of the dam is further weakened.
SUMMERY OF THE UTILITY MODEL
In order to improve the seepage-proofing performance of the dam, the application provides a clay core rock-fill dam structure.
The application provides a clay core rock-fill dam structure adopts following technical scheme:
the utility model provides a clay core rock-fill dam structure, is including being fixed in the clay core in river course, the packing layer of being made by the stone has all been laid to the both sides of clay core along the rivers direction, the river course is laid equally to the packing layer, is located first bank protection and the second bank protection of being made by the precast concrete piece that is made by the lead wire cage stone are laid to the packing layer in clay core upper reaches, first bank protection and second bank protection all are located one side that the packing layer deviates from the clay core, just the second bank protection is located the top of first bank protection, are located the second bank protection has equally been laid to one side that the packing layer in clay core low reaches deviates from the clay core.
Through adopting above-mentioned technical scheme, during the use, protection can be done to the packing layer to first bank protection and second bank protection that set up, when increasing dykes and dams steadiness, increases the prevention of seepage performance of dykes and dams.
Optionally, a transition layer made of sand grains is laid between the clay core wall and the packing layer.
Through adopting above-mentioned technical scheme, the transition layer can be to making the separation between clay heart wall and the packing layer, increases the steadiness of clay in the clay heart wall.
Optionally, a reverse filtering layer is laid between the transition layer and the clay core wall.
Through adopting above-mentioned technical scheme, the reverse filtration layer has the effect of straining soil drainage, if moisture gets into behind the clay core and when flowing out, moisture is difficult for taking out the clay in the clay core to further improve the steadiness of clay core.
Optionally, a geomembrane penetrates through the filler layer on one side of the clay core wall facing the upstream side of the river channel, the geomembrane separates the filler layer along the width direction of the river channel, and protective layers made of fine soil or gravel are laid on two sides of the geomembrane.
By adopting the technical scheme, under the action of the geomembrane, the water can be effectively blocked, the possibility that the water permeates into the interior of the dam is reduced, and the seepage-proofing performance of the dam is improved; simultaneously, the protective layer that sets up can do the protection to the geomembrane, reduces geomembrane and the intraformational stone direct contact of filler, and the possibility of taking place wearing and tearing increases the life of geomembrane.
Optionally, the lower end of the packing layer on the upstream side of the clay core wall facing the river is provided with an impervious wall, and the impervious wall penetrates through the bottom of the river.
By adopting the technical scheme, the set anti-seepage wall has the effect of blocking water, so that the anti-seepage performance of the dam is further improved.
Optionally, the clay core bottom is equipped with a plurality of rows and opens the curtain grout hole of locating the river course bottom surface, with arranging the width direction along the river course of curtain grout hole distributes, the curtain grout hole is used for pouring cement mortar, the mud jacking board is laid to clay core bottom, the mud jacking board covers in the curtain grout hole.
By adopting the technical scheme, when in use, cement mortar is poured into the curtain grouting hole, so that a water retaining wall is formed, and the seepage-proofing effect of the dam is further improved; the mud jacking board can be protected the downthehole cement mortar of curtain grout, increases the steadiness of cement mortar in the curtain grout is downthehole, does the isolation with the clay in cement mortar and the clay heart wall simultaneously, reduces the possibility that takes place mutual interference between the two.
Optionally, the bottom of the clay core wall is provided with a plurality of rows of consolidation grouting holes which are arranged on the bottom surface of the river channel and used for grouting cement mortar, the consolidation grouting holes are distributed along the width direction of the river channel in the same row, and the grouting plates are also covered on the consolidation grouting holes.
Through adopting above-mentioned technical scheme, during the use, to consolidating downthehole cement mortar of pouring into of grout, and then can do the reinforcement to the river course bottom, improve the compressive capacity of river course bottom, and then increase holistic steadiness behind the dykes and dams construction.
Optionally, the top of the clay core wall is fixedly connected with a transition prevention wall, and the transition prevention wall extends along the width direction of the river channel.
Through adopting above-mentioned technical scheme, prevent crossing the wall and have the effect of blockking off to the water wave, reduce the possibility that the water wave causes the influence on every side.
In summary, the present application includes at least one of the following beneficial technical effects:
when the dam is used, the arranged first slope protection and the second slope protection can protect the packing layer, so that the seepage-proofing performance of the dam is improved while the stability of the dam is improved;
the geomembrane and the protective layer are arranged, so that under the action of the geomembrane, water can be effectively blocked, and the seepage-proofing performance of the dam is improved; and under the protective action of the protective layer, the possibility that the geomembrane is directly contacted with the stone blocks in the filler layer to cause abrasion can be reduced, and the service life of the geomembrane is prolonged.
Drawings
FIG. 1 is a side sectional view of an embodiment of the present application;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of portion B of FIG. 1;
fig. 4 is an enlarged schematic view of a portion C of fig. 1.
Description of reference numerals: 1. a clay core wall; 2. a filler layer; 21. a geomembrane; 22. a protective layer; 3. a first revetment; 4. a second revetment; 5. a transition layer; 51. a reverse filtering layer; 6. a cut-off wall; 7. curtain grouting holes; 71. a pulp pressing plate; 72. solidifying and grouting holes; 8. prevent crossing the wall.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a clay core rock-fill dam structure. Referring to fig. 1, a clay core rock-fill dam structure includes a clay core 1 made of clay and fixed to a river, and packing layers 2 are laid on both sides of the clay core 1 in a water flow direction. In the embodiment, the filler layer 2 positioned on one side of the clay core wall 1 facing the upstream side of the river channel is made of stone slag and stones, the stone slag is laid on the bottom wall of the river channel, and the stones are laid on the upper end of the stone slag; the packing layer 2 on the side of the clay core 1 facing the downstream side of the river is made of stone.
Referring to fig. 1, first bank protection 3 and second bank protection 4 have been laid to filler layer 2 that is located clay core wall 1 towards river course upstream one side, and first bank protection 3 is made by the lead wire cage stone and second bank protection 4 is made by precast concrete piece. In the embodiment, the second revetment 4 is positioned above the first revetment 3, and the first revetment 3 is laid on one side of the ballast part in the filler layer 2, which is far away from the clay core wall 1; the second revetment 4 is laid on the side of the packing layer 2 where the stone part departs from the clay core wall 1.
And a second revetment 4 is also paved on one side, deviating from the clay core wall 1, of the filler layer 2 positioned on one side, facing the downstream side of the river, of the clay core wall 1.
During the use, protection can be done to packing layer 2 to first bank protection 3 and the second bank protection 4 of setting, when increasing dykes and dams steadiness, increases the prevention of seepage performance of dykes and dams. And, the packing layer 2 that is located 1 one side towards the river course upper reaches of clay heart wall sets up to including stone sediment and stone for the stone sediment can reduce the gap between the material, increases the effect that blocks to rivers.
Referring to fig. 1 and 2, a transition layer 5 is laid between the clay core wall 1 and the packing layer 2, and the transition layer 5 is made of sand to separate the clay core wall 1 from the packing layer 2, so as to increase the stability of clay in the clay core wall 1.
Referring to fig. 1 and 2, a reverse filtering layer 51 is laid between the transition layer 5 and the clay core wall 1, and the reverse filtering layer 51 is made of sand, crushed stone or cobblestone having different particle sizes. The reverse filtering layer 51 has a function of filtering soil and draining water, so that if water enters the clay core wall 1 and flows out, the water is not easy to take out the clay in the clay core wall 1, thereby further improving the stability of the clay core wall 1.
Referring to fig. 2, the top of the clay core wall 1 is fixedly connected with a transition-preventing wall 8, and the transition-preventing wall 8 extends along the width direction of the river. The anti-crossing wall 8 can block water waves and reduce the possibility of influence of the water waves on the periphery.
Referring to fig. 3, the bottom of the clay core wall 1 is provided with a plurality of rows of curtain grouting holes 7, and the curtain grouting holes 7 are arranged in the river channel, in this embodiment, two rows of the curtain grouting holes 7 are arranged, and the curtain grouting holes 7 in the same row are distributed along the width direction of the river channel. When the dam is used, cement mortar is poured into the curtain grouting hole 7, so that a water retaining wall is formed, and the seepage-proofing effect of the dam is further improved.
Referring to fig. 3, at the same time, the bottom of the clay core wall 1 is further provided with a plurality of rows of consolidation grouting holes 72 arranged in the river, in this embodiment, the consolidation grouting holes 72 are arranged in a row, and the row of consolidation grouting holes 72 is also distributed along the width direction of the river. During the use, pour into cement mortar in to consolidating grout hole 72, and then can do the reinforcement to the river course bottom, improve the compressive capacity of river course bottom, and then increase holistic steadiness behind the dykes and dams construction.
Referring to fig. 3, a grout-pressing plate 71 is further laid on the bottom of the clay core wall 1, the grout-pressing plate 71 is made of concrete, and the grout-pressing plate 71 extends in the width direction of the river and covers the curtain grouting hole 7 and the consolidation grouting hole 72. Therefore, cement mortar in the curtain grouting hole 7 and the consolidation grouting hole 72 is protected, and the stability of the cement mortar in the curtain grouting hole 7 or the consolidation grouting hole 72 is improved; meanwhile, the cement mortar is separated from the clay in the clay core wall 1, so that the possibility of mutual interference between the cement mortar and the clay is reduced.
In this embodiment, the mud jacking plate 71 is also fixedly connected with a plurality of anchor rods, and the anchor rods penetrate through the interior of the river channel, so that the stability of the mud jacking plate 71 during installation is improved.
Referring to fig. 4, a geomembrane 21 is inserted into the packing layer 2 on the upstream side of the clay core wall 1 facing the river, and in this embodiment, the geomembrane 21 is inserted into the ballast portion of the packing layer 2. The geomembrane 21 extends in the width direction of the river channel and partially partitions the ballast. Therefore, under the action of the geomembrane 21, the water can be effectively blocked, the possibility that the water permeates into the interior of the dam is reduced, and the seepage-proofing performance of the dam is improved.
Referring to fig. 4, protective layers 22 are laid on two sides of the geomembrane 21, and the protective layers 22 are made of fine sand or gravel, so that the protective layers 22 can protect the geomembrane 21, the possibility of abrasion caused by direct contact between the geomembrane 21 and stones or stones residues in the packing layer 2 is reduced, and the service life of the geomembrane 21 is prolonged.
The bottom of the packing layer 2 on one side of the clay core wall 1 facing the upstream of the river is provided with a cut-off wall 6, and in the embodiment, the cut-off wall 6 is positioned below the geomembrane 21 and penetrates through the inside of the river. And the bottom of the impervious wall 6 is also provided with a row of curtain grouting holes 7 arranged in the river channel, and cement mortar is poured into the curtain grouting holes 7. Therefore, cement mortar is poured into the set impervious wall 6 and the curtain grouting hole 7, the effect of blocking moisture is achieved, and the impervious performance of the dam is further improved.
The implementation principle of the clay core rock-fill dam structure of the embodiment of the application is as follows: during the use, protection can be done to packing layer 2 to first bank protection 3 and the second bank protection 4 of setting, when increasing dykes and dams steadiness, increases the prevention of seepage performance of dykes and dams. In addition, the set impervious wall 6, the geomembrane 21 and the curtain grouting hole 7 are filled with the water retaining wall made of cement mortar, so that the impervious performance of the dam can be further improved, and the service life of the dam is prolonged.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a clay core rock-fill dam structure, is including clay core (1) that is fixed in the river course, packing layer (2) made by the stone have all been laid in both sides of clay core (1) along the rivers direction, river course, its characterized in that are laid equally in packing layer (2): lie in first bank protection (3) made by the lead wire cage stone and second bank protection (4) made by precast concrete piece have been laid in packing layer (2) on clay core wall (1) upper reaches, first bank protection (3) and second bank protection (4) all are located one side that packing layer (2) deviate from clay core wall (1), just second bank protection (4) are located the top of first bank protection (3), are located one side that packing layer (2) in clay core wall (1) low reaches deviate from clay core wall (1) has laid second bank protection (4) equally.
2. The clay core rockfill dam structure of claim 1, wherein: a transition layer (5) made of sand grains is laid between the clay core wall (1) and the packing layer (2).
3. The clay core rockfill dam structure of claim 2, wherein: and a reverse filtering layer (51) is laid between the transition layer (5) and the clay core wall (1).
4. The clay core rockfill dam structure of claim 1, wherein: a geomembrane (21) penetrates through the packing layer (2) on one side, facing the upstream side of the river, of the clay core wall (1), the packing layer (2) is separated by the geomembrane (21) along the width direction of the river, and protective layers (22) made of fine soil or gravel materials are laid on two sides of the geomembrane (21).
5. The clay core rockfill dam structure of claim 1, wherein: the lower end of the packing layer (2) positioned on one side of the clay core wall (1) facing the upstream of the river channel is provided with an impervious wall (6), and the impervious wall (6) penetrates through the bottom of the river channel.
6. The clay core rockfill dam structure of claim 1, wherein: clay core (1) bottom is equipped with a plurality of rows and opens curtain grout hole (7) of locating the river course bottom surface, with arranging curtain grout hole (7) distribute along the width direction in river course, curtain grout hole (7) are used for pouring into cement mortar, clay core (1) bottom is laid and is pressed grout board (71), it covers in curtain grout hole (7) to press grout board (71).
7. The clay core rockfill dam structure of claim 6, wherein: the bottom of the clay core wall (1) is provided with a plurality of rows of consolidation grouting holes (72) which are arranged on the bottom surface of a river channel and used for grouting cement mortar, the consolidation grouting holes (72) are distributed along the width direction of the river channel in the same row, and the grouting plates (71) also cover the consolidation grouting holes (72).
8. The clay core rockfill dam structure of claim 1, wherein: the top of the clay core wall (1) is fixedly connected with a transition wall (8), and the transition wall (8) extends along the width direction of the river channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220700372.5U CN217078645U (en) | 2022-03-28 | 2022-03-28 | Clay core wall rock-fill dam structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220700372.5U CN217078645U (en) | 2022-03-28 | 2022-03-28 | Clay core wall rock-fill dam structure |
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| CN217078645U true CN217078645U (en) | 2022-07-29 |
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| CN202220700372.5U Active CN217078645U (en) | 2022-03-28 | 2022-03-28 | Clay core wall rock-fill dam structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117188396A (en) * | 2023-10-13 | 2023-12-08 | 中国水利水电第十二工程局有限公司 | Rock-fill dam structure suitable for hydraulic and hydroelectric engineering and construction method thereof |
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2022
- 2022-03-28 CN CN202220700372.5U patent/CN217078645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117188396A (en) * | 2023-10-13 | 2023-12-08 | 中国水利水电第十二工程局有限公司 | Rock-fill dam structure suitable for hydraulic and hydroelectric engineering and construction method thereof |
| CN117188396B (en) * | 2023-10-13 | 2024-04-05 | 中国水利水电第十二工程局有限公司 | Rock-fill dam structure suitable for hydraulic and hydroelectric engineering and construction method thereof |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 641399 No. 98 waixi street, Yanjiang District, Ziyang City, Sichuan Province Patentee after: Sichuan Shuifa Construction Co.,Ltd. Address before: 641399 No. 98 waixi street, Yanjiang District, Ziyang City, Sichuan Province Patentee before: Sichuan water conservancy and Electric Power Engineering Bureau Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |