CN212000919U - Prevent structure that concrete face dam high toe wall destroyed - Google Patents
Prevent structure that concrete face dam high toe wall destroyed Download PDFInfo
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- CN212000919U CN212000919U CN201922360730.3U CN201922360730U CN212000919U CN 212000919 U CN212000919 U CN 212000919U CN 201922360730 U CN201922360730 U CN 201922360730U CN 212000919 U CN212000919 U CN 212000919U
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Abstract
The utility model discloses a prevent structure of concrete panel dam high toe wall destruction, build the concrete panel dam on deep overburden, concrete panel dam upper reaches face sets up the panel, the panel sets up with the dam foot and enlarges the panel and pass through the stagnant water and be connected, set up high toe wall and cut-off wall before enlarging the panel, it passes through stagnant water and is connected with high toe wall to enlarge the panel, set up the connecting plate between high toe wall and the cut-off wall, connect through the stagnant water between high toe wall, cut-off wall and the connecting plate, high toe wall and cut-off wall go deep into the basement rock. The utility model discloses avoided digging greatly deeply the overburden, can pour the simultaneous construction with dam body filling, panel, can effectively practice thrift time limit for a project and engineering investment, all warp and are eaten by impervious wall and connecting plate, guarantee that the deformation and the displacement of high toe wall are in acceptable within range.
Description
Technical Field
The utility model relates to a concrete panel dam, especially a prevent structure of concrete panel dam high toe wall destruction.
Background
In concrete faced dam designs, adverse terrain, geological conditions pose difficulties in the placement of toe board lines. The high-toe wall is adopted to replace the toe plate for connecting the foundation and the face plate, although adverse geological zones can be avoided, the excavation amount is huge, and the high-toe wall bears huge upstream water pressure and dam body soil pressure respectively in the operation period and the completion period of the reservoir, so that deformation and displacement can be caused, the face plate is extruded, and an anti-seepage system of the face plate dam is damaged. A Nigeria first-seat face slab rock-fill dam is 125m high, a section of high-toe wall is adopted at the toe plate position, the toe wall displaces under the action of reservoir water pressure after water storage, the face slab collapses and is crushed, large water leakage of 180L/s is generated, and the main reason is that rock-fill behind the high-toe wall is difficult to provide larger passive soil pressure. Therefore, a foundation treatment structure with obvious effect, convenient construction, safety and economy is urgently needed to replace a high-toe wall.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a structure that concrete face dam high toe wall destruction is prevented that the effect is showing, construction facility, safe economy is provided.
In order to solve the above problem, the utility model discloses the technical scheme who adopts is: the utility model provides a prevent structure of concrete face dam high toe wall destruction, including the concrete face dam of building on the deep overburden, the panel that concrete face dam upstream set up, the enlarged panel that panel and dam foot department set up, enlarge the high toe wall that sets up in front of the panel, it all is provided with the waterstop to enlarge between panel and the high toe wall, enlarge between panel and the panel, still set up the cut-off wall in the upstream side of high toe wall, set up the connecting plate between high toe wall and the cut-off wall, connect through the waterstop between high toe wall, cut-off wall and the connecting plate, high toe wall and cut-off wall go deep into the basement rock of deep overburden below.
The deep and thick covering layer is a sand gravel layer.
The enlarged panel and the connecting plate are reinforced concrete plates.
The waterstop is a rubber waterstop or a copper waterstop sheet.
The impervious wall is a common concrete impervious wall, a reinforced concrete impervious wall, a plastic concrete impervious wall or a clay concrete impervious wall.
The depth of the high-toe wall and the impervious wall penetrating into the bedrock is 0.5-1.0 m.
The utility model has the advantages that: the construction method avoids heavy excavation of a deep covering layer, can be simultaneously constructed with dam body filling and panel pouring, can effectively save construction period and engineering investment, and ensures that all deformation is absorbed by the impervious wall and the connecting plate and the deformation and displacement of the high-toe wall are within an acceptable range.
Drawings
Fig. 1 is a schematic diagram of the structure for preventing the damage of the high toe wall of the concrete face plate dam of the utility model.
Detailed Description
The invention will be described in further detail with reference to the following drawings and embodiments:
as shown in fig. 1, the utility model discloses prevent structure of concrete panel dam high toe wall destruction, including building the concrete panel dam 3 on deep overburden 1, the panel 4 that 3 upper reaches of concrete panel dam set up, the expansion panel 5 that panel 4 and dam foot department set up, the high toe wall 6 that sets up before the expansion panel 5, between expansion panel 5 and the high toe wall 6, all be provided with waterstop 9 between expansion panel 5 and the panel 4, still set up impervious wall 8 in the upper reaches side of high toe wall 6, set up connecting plate 7 between high toe wall 6 and the impervious wall 8, connect through waterstop 9 between high toe wall 6, impervious wall 8 and the connecting plate 7, high toe wall 6 and impervious wall 8 go deep into in basement 2 of deep overburden 1 below.
The deep overburden 1 is a gravel layer.
The enlarged panel 5 and the connecting plate 7 are reinforced concrete plates.
The water stop 9 is a rubber water stop or a copper water stop.
The impervious wall 8 is a common concrete impervious wall, a reinforced concrete impervious wall, a plastic concrete impervious wall or a clay concrete impervious wall.
The depth of the high-toe wall 6 and the impervious wall 8 penetrating into the bedrock 2 is 0.5-1.0 m.
Specifically, a concrete panel dam 3 is built on a deep covering layer 1, a panel 4 is arranged on the upstream face of the concrete panel dam 3, the panel 4 is connected with an enlarged panel 5 arranged at the bottom of the dam through a water stop 9, a high-toe wall 6 and a seepage-proof wall 8 are arranged in front of the enlarged panel 5, the enlarged panel 5 is connected with the high-toe wall 6 through the water stop 9, a connecting plate 7 is arranged between the high-toe wall 6 and the seepage-proof wall 8, the high-toe wall 6, the seepage-proof wall 8 and the connecting plate 7 are connected through the water stop 9, and the high-toe wall 6 and the seepage-proof wall 8 penetrate into a bedrock.
Specifically, after the reservoir stores water, water pressure is transmitted to the impervious wall 8, the impervious wall 8 deforms under the action of the water pressure, the connecting plate 7 arranged between the high-toe wall 6 and the impervious wall 8 deforms, the deformation of the connecting plate is coordinated with the deformation of the impervious wall 8, and the water pressure directly acts on the high-toe wall 6, so that the deformation of the high-toe wall 6 is avoided, and the extrusion damage of the enlarged panel 5 arranged on the face plate 4 and the dam foot is avoided.
The above embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and accordingly to implement the present invention, and the scope of the present invention should not be limited by the embodiments, i.e. all equivalent changes or modifications made by the spirit of the present invention still fall within the scope of the present invention.
Claims (6)
1. A structure for preventing a high-toe wall of a concrete face dam from being damaged comprises a concrete face dam (3) built on a deep covering layer (1), a face plate (4) arranged on the upstream face of the concrete face dam (3), an expansion face plate (5) arranged at the positions of the face plate (4) and a dam foot, a high-toe wall (6) arranged in front of the expansion face plate (5), water stop belts (9) are arranged between the expansion face plate (5) and the high-toe wall (6) and between the expansion face plate (5) and the face plate (4), the high-toe wall waterproof coating is characterized in that an impervious wall (8) is further arranged on the upstream side of the high-toe wall (6), a connecting plate (7) is arranged between the high-toe wall (6) and the impervious wall (8), the high-toe wall (6), the impervious wall (8) and the connecting plate (7) are connected through a water stop (9), and the high-toe wall (6) and the impervious wall (8) penetrate into a bedrock (2) below a deep covering layer (1).
2. The structure for preventing the destruction of high-toe walls of concrete faced dams according to claim 1, characterized in that said deep covering layer (1) is a gravel layer.
3. The structure for preventing the destruction of the high-toe wall of a concrete panel dam according to claim 1, wherein the enlarged panel (5) and the connection plate (7) are reinforced concrete slabs.
4. The structure for preventing the damage of the high-toe wall of the concrete face dam according to claim 1, wherein the water stop (9) is a rubber water stop or a copper water stop.
5. The structure for preventing the destruction of the high-toe wall of a concrete faced dam according to claim 1, wherein the cut-off wall (8) is a general concrete cut-off wall, a reinforced concrete cut-off wall, a shaped concrete cut-off wall or a cemented concrete cut-off wall.
6. The structure for preventing the damage of the high-toe wall of the concrete faced dam according to claim 1, wherein the depth of the high-toe wall (6) and the impervious wall (8) penetrating into the bedrock (2) is 0.5 to 1.0 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360730.3U CN212000919U (en) | 2019-12-27 | 2019-12-27 | Prevent structure that concrete face dam high toe wall destroyed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360730.3U CN212000919U (en) | 2019-12-27 | 2019-12-27 | Prevent structure that concrete face dam high toe wall destroyed |
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| Publication Number | Publication Date |
|---|---|
| CN212000919U true CN212000919U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922360730.3U Active CN212000919U (en) | 2019-12-27 | 2019-12-27 | Prevent structure that concrete face dam high toe wall destroyed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939108A (en) * | 2019-12-27 | 2020-03-31 | 中水北方勘测设计研究有限责任公司 | Structure for preventing concrete face dam high-toe wall from being damaged |
| CN113322904A (en) * | 2021-06-04 | 2021-08-31 | 中国电建集团成都勘测设计研究院有限公司 | High-spraying impervious wall for covering layer foundation concrete dam and construction method thereof |
-
2019
- 2019-12-27 CN CN201922360730.3U patent/CN212000919U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939108A (en) * | 2019-12-27 | 2020-03-31 | 中水北方勘测设计研究有限责任公司 | Structure for preventing concrete face dam high-toe wall from being damaged |
| CN113322904A (en) * | 2021-06-04 | 2021-08-31 | 中国电建集团成都勘测设计研究院有限公司 | High-spraying impervious wall for covering layer foundation concrete dam and construction method thereof |
| CN113322904B (en) * | 2021-06-04 | 2022-08-19 | 中国电建集团成都勘测设计研究院有限公司 | High-spraying impervious wall for covering layer foundation concrete dam and construction method thereof |
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