CN112832204A - Concrete face rockfill dam structure with foundation grouting gallery and its construction method - Google Patents
Concrete face rockfill dam structure with foundation grouting gallery and its construction method Download PDFInfo
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- CN112832204A CN112832204A CN202110171645.1A CN202110171645A CN112832204A CN 112832204 A CN112832204 A CN 112832204A CN 202110171645 A CN202110171645 A CN 202110171645A CN 112832204 A CN112832204 A CN 112832204A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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Abstract
本发明涉及一种带基础灌浆廊道的混凝土面板堆石坝结构及其施工方法。本发明的目的是提供一种带基础灌浆廊道的混凝土面板堆石坝结构及其施工方法，以使大坝在有限降低水位甚至不降低运行水位的条件下也能进行基础帷幕灌浆补强处理。本发明的技术方案是：一种带基础灌浆廊道的混凝土面板堆石坝结构，其特征在于：该混凝土面板堆石坝上游面的趾板结构分为对应河床及两岸低高程区域的基础灌浆廊道结构体和对应两岸高高程区域的岸上趾板；所述基础灌浆廊道结构体内的灌浆廊道在两岸通过交通廊道连通至混凝土面板堆石坝下游坝体外。本发明适用于土石坝工程。
The invention relates to a concrete face rockfill dam structure with a foundation grouting gallery and a construction method thereof. The purpose of the present invention is to provide a concrete face rockfill dam structure with a foundation grouting gallery and a construction method thereof, so that the dam can carry out the foundation curtain grouting reinforcement treatment under the condition that the water level is limited or even the operating water level is not lowered. . The technical scheme of the present invention is: a concrete face rockfill dam structure with a foundation grouting gallery, characterized in that: the toe plate structure on the upstream face of the concrete face rockfill dam is divided into foundation grouting corresponding to the river bed and the low elevation areas on both sides of the bank The corridor structure and the toe plate on the bank corresponding to the high elevation area on both banks; the grouting corridor in the basic grouting corridor structure is connected to the downstream dam body of the concrete face rockfill dam through traffic corridors on both banks. The present invention is suitable for earth-rock dam engineering.
Description
Technical Field
The invention relates to a concrete panel rock-fill dam structure with a foundation grouting gallery and a construction method thereof. The method is suitable for earth and rockfill dam engineering.
Background
The concrete panel rock-fill dam can fully utilize the excavated materials of the building, is one of economic and green dam types, and is widely applied to the construction of water and electricity hydraulic engineering in China. The concrete face rockfill dam body adopts a concrete face to prevent seepage, the foundation adopts curtain grouting or a seepage-proof wall to prevent seepage, and the foundation prevents seepage and the dam body from seepage and is connected through toe boards.
Since the toe board is exposed in the upstream vault, toe board foundation treatments, including consolidation grouting and drapery grouting, need to be performed prior to impoundment; if the foundation needs to be reinforced and grouted after the reservoir stores water, the reservoir water must be emptied, and toe boards in the treated area are exposed out of the water. For the reservoir in the operation period, the normal operation of the reservoir is adversely affected, particularly the elevation of a treatment part is low, and the problem that the existing emptying facility of the reservoir cannot meet the requirement of controlling the overhaul water level also exists.
The foundation grouting belongs to concealed engineering, the construction quality control difficulty is high, the defect possibility is high, the normal service life of curtain grouting is generally shorter than the design life of a dam, and even if the curtain grouting with good construction quality is carried out, the foundation seepage-proofing reinforcement is carried out in the later stage. The existing concrete panel rock-fill dam has a certain contradiction between the basic seepage-proofing reinforcement treatment and the continuous normal operation of a reservoir.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the existing problems, the concrete panel rock-fill dam structure with the foundation grouting gallery and the construction method thereof are provided, so that the dam can be subjected to foundation curtain grouting reinforcement treatment under the condition of limited water level reduction or even no reduction of the operation water level.
The technical scheme adopted by the invention is as follows: the utility model provides a take concrete panel rock-fill dam structure of basic grout corridor which characterized in that: the toe board structure of the upstream surface of the concrete panel rock-fill dam is divided into a foundation grouting gallery structure body corresponding to a riverbed and a low-elevation area of two banks and an onshore toe board corresponding to a high-elevation area of the two banks;
grouting galleries in the foundation grouting gallery structure body are communicated to the outside of a downstream dam body of the concrete panel rock-fill dam through traffic galleries at two banks.
A water stopping structure I is arranged at the position corresponding to the structural joint I of the foundation grouting gallery structure; and a structural joint II is arranged between the foundation grouting gallery structure body and the shore toe board, and a water stopping structure II is arranged corresponding to the structural joint II.
The water stopping structure I comprises a copper sheet water stopping I and a surface bulge type water stopping I;
the copper sheet water stop I is positioned in the foundation grouting gallery structure body and on the upstream side of the grouting gallery, one end of the copper sheet water stop I is connected with a bottom copper sheet water stop of a peripheral seam on the upstream surface of the concrete panel rock-fill dam, and the other end of the copper sheet water stop I extends into a bottom anchoring groove below the foundation grouting gallery structure body and is anchored;
the surface bulge type water stopping I is arranged along the top structural joint I of the foundation grouting gallery structure in a cross-joint covering mode, one end of the surface bulge type water stopping I is connected with the surface bulge type water stopping on the peripheral joints into a whole, and the other end of the surface bulge type water stopping I extends into a rock anchoring groove on the rock mass on the upstream side of the foundation grouting gallery structure.
The water stopping structure II comprises a copper sheet water stopping structure II and a surface bulge type water stopping structure II;
the copper sheet water stop II is arranged across a structural joint II, two sides of the copper sheet water stop II are respectively connected with the foundation grouting gallery structure body and the shore toe board, one end of the copper sheet water stop II is connected with a bottom copper sheet water stop of a peripheral joint on the upstream surface of the concrete panel rock-fill dam, and the other end of the copper sheet water stop II is anchored in a toe board lower anchoring groove below the shore toe board;
and the surface bulge type water stop II is arranged along the top of the structural joint II between the foundation grouting gallery and the shore toe board in a spanning manner, one end of the surface bulge type water stop II is connected with the surface bulge type water stop of the peripheral joint into a whole, and the other end of the surface bulge type water stop II extends into the foundation anchoring groove at the upper end of the structural joint II and the top of the foundation grouting gallery structure.
And the toe board foundation below the shore toe board is provided with foundation anchor bars, consolidation grouting and curtain grouting.
And the foundation below the foundation grouting gallery structure body is provided with consolidation grouting and curtain grouting.
And special cushion materials are arranged in the dam body of the concrete panel rock-fill dam on the downstream side of the peripheral seams.
The two sides of the bottom plate of the grouting gallery in the foundation grouting gallery structure are provided with drainage ditches, and the part of the grouting gallery corresponding to the bank slope is provided with a pedestrian step.
The traffic corridor adopts the concrete corridor structure of burying concrete panel rock-fill dam body, and concrete corridor structure basis is located on the natural basis after the excavation, is equipped with the transition material district that is not less than 1m thick between the dam body and the concrete corridor structure outside.
The construction method of the concrete panel rock-fill dam structure with the foundation grouting gallery is characterized by comprising the following steps of:
determining the arrangement elevation of the foundation grouting gallery structure, wherein the elevation is a water level operation sensitive water level or a designed emptying facility limiting water level, the foundation seepage-proofing reinforcement treatment above the elevation is carried out by reducing the operation water level, and the foundation seepage-proofing reinforcement treatment below the elevation is carried out under the water level;
performing dam foundation excavation, excavation of shore toe boards and foundation grouting gallery structure foundations and excavation of two-shore traffic gallery foundations, wherein the foundation grouting gallery structure foundations are formed by groove excavation according to body types of the foundation grouting gallery structure foundations, and bottom anchoring grooves are excavated in the positions corresponding to the structural joint I of the foundation grouting gallery structure;
pouring a foundation grouting gallery structure body, wherein the foundation grouting gallery structure body comprises a copper sheet water stop I pre-buried in the foundation grouting gallery structure body, a water collecting well is arranged at the lowest elevation position of a bottom plate of a river bed part, and water stop copper sheets II connected with shore toe boards are pre-buried at the end parts of two sides of the foundation grouting gallery structure body;
pouring a concrete gallery structure of the two-bank traffic gallery;
performing consolidation grouting and curtain grouting construction on the foundation of the foundation grouting gallery structure according to the sequence of consolidation and curtain grouting;
drilling holes in the range of the shore toe board foundation to install foundation anchor bars;
pouring a shore toe board;
performing consolidation grouting and curtain grouting construction on the shore toe board foundation according to the sequence of consolidation and curtain grouting;
and constructing the part above the ground according to the construction process requirement of the concrete panel rock-fill dam.
The invention has the beneficial effects that: the foundation grouting gallery structure is adopted as a part of the toe board structure at the bottom of the concrete panel rock-fill dam panel, the grouting gallery in the foundation grouting gallery structure is communicated with the downstream outside of the dam body through the traffic galleries at two banks, and the concrete panel rock-fill dam consolidation grouting and the curtain grouting have construction conditions after water storage, so that the operation flexibility of the concrete panel rock-fill dam is further improved, the operation benefit of a reservoir is improved, and the operation and maintenance cost of the reservoir is reduced.
Drawings
Fig. 1 is a schematic plan view of the embodiment.
FIG. 2 is a typical structure diagram of the dam body at the shore toe board position in the embodiment.
FIG. 3 is a typical structure diagram of a dam at the structural body part of the foundation grouting gallery in the embodiment.
Fig. 4 is a schematic sectional view of a water stopping structure i in the embodiment.
Fig. 5 is a schematic sectional view (vertical grouting gallery direction) of the water stopping structure ii in the embodiment.
Fig. 6 is a schematic sectional view (vertical traffic corridor direction) of the water stopping structure ii in the embodiment.
Fig. 7 is a typical structure diagram of a traffic corridor in the embodiment.
1. A reservoir bank; 2. a riverbed; 3. concrete face rockfill dams; 4. a concrete panel; 5. a foundation grouting gallery structure; 6. a shore toe board; 7. a concrete gallery structure; 8. a wave wall; 9. peripheral seams; 10. stopping water at the top; 11. foundation anchor bars; 12. consolidation grouting; 13. grouting a curtain; 14. special bedding materials; 16. stopping water for the copper sheet I; 17. a bottom anchoring groove; 18. surface bulge type water stopping I; 19. a rock anchoring groove; 20. stopping water from the copper sheet II; 21. a toe plate lower anchoring groove; 22. surface bulge type water stopping II; 23. a foundation anchoring groove; 24. a transition material area.
Detailed Description
The embodiment is a concrete panel rock-fill dam structure with a foundation grouting gallery, wherein the concrete panel rock-fill dam is constructed across a river and is located on a river bed and a bank, the upstream of the concrete panel rock-fill dam is impermeable by adopting a concrete panel, a toe board structure at the bottom of the upstream surface of the concrete panel rock-fill dam is divided into a foundation grouting gallery structure body arranged in a low-elevation area corresponding to the river bed and two banks and an on-bank toe board arranged in a high-elevation area corresponding to the two banks, and the grouting gallery in the foundation grouting gallery structure body is communicated to the outside of the downstream dam body of the concrete panel rock-fill dam through a traffic gallery at the two banks.
In this example, a horizontal joint and a top water stop are provided between the top of the concrete panel and the wave wall on the top of the concrete panel rock-fill dam, and a peripheral joint and a water stop are provided between the bottom of the concrete panel and the foundation grouting gallery structure and the shore toe board.
The structure seam I of basic grout corridor structure body is equipped with stagnant water structure I in this embodiment, and stagnant water structure I is including burying copper sheet stagnant water I in the concrete and the surface swell type stagnant water I that forms by the packing of plastic filler.
In the embodiment, a copper sheet water stop I is buried in a foundation grouting gallery structure body and is positioned on the upstream side of the grouting gallery, one end of the copper sheet water stop I is connected with a bottom copper sheet water stop of a peripheral seam by adopting a T-shaped joint, and the other end of the copper sheet water stop I extends into a bottom anchoring groove below the foundation grouting gallery structure body and is anchored by adopting pouring expansion concrete; the surface bulge type water stop I is arranged along the top structural joint I of the foundation grouting gallery structure in a cross-joint covering mode, one end of the surface bulge type water stop I is connected with the surface bulge type water stop on the peripheral joints into a whole, and the other end of the surface bulge type water stop I extends into a rock anchoring groove on the rock mass on the upstream side of the foundation grouting gallery structure.
In the embodiment, a structural joint II is arranged between the foundation grouting gallery structure body and the onshore toe board, a water stopping structure II is arranged corresponding to the structural joint, and the water stopping structure II comprises a copper sheet water stopping structure II and a surface bulge type water stopping structure II.
In the embodiment, a copper sheet water stop II is arranged across a structural joint II, two sides of the copper sheet water stop II are respectively connected with a foundation grouting gallery structure body and a shore toe board, one end of the copper sheet water stop II is connected with a bottom copper sheet water stop of a peripheral joint on the upstream surface of the concrete panel rock-fill dam by adopting a T-shaped joint, and the other end of the copper sheet water stop II is anchored in a toe board lower anchoring groove below the shore toe board; and the surface bulge type water stop II is arranged along the top of the structural joint II between the foundation grouting gallery and the shore toe board in a joint-spanning covering manner, one end of the surface bulge type water stop II is connected with the surface bulge type water stop of the peripheral joint into a whole, and the other end of the surface bulge type water stop II extends into a foundation anchoring groove at the upstream end of the structural joint and the top of the foundation grouting gallery structure.
In the embodiment, foundation anchor bars, consolidation grouting and curtain grouting are arranged on toe board foundations below the shore toe boards; and the foundation below the foundation grouting gallery structure body is provided with consolidation grouting and curtain grouting.
In the embodiment, the traffic corridor adopts a concrete corridor structure embedded in a dam body of a concrete panel rock-fill dam, the foundation of the concrete corridor structure is located on an excavated natural foundation, and a transition material area with the thickness not less than 1m is arranged between the outer part of the concrete corridor structure and the dam body. In the embodiment, special cushion materials are arranged at the downstream side of the peripheral gap in the concrete panel rock-fill dam body.
The bottom plate both sides of the interior grout corridor of basic grout corridor structure body in this embodiment are equipped with the escape canal, and the portion that the grout corridor corresponds the bank slope is equipped with the pedestrian's step.
The specific construction method of the embodiment is as follows:
determining the arrangement elevation of the foundation grouting gallery structure according to the reservoir operation requirement, the topographic and geological conditions and investment analysis; the elevation is typically a water level sensitive to operation or a limit level of an existing flare. The foundation seepage-proofing reinforcing treatment above the elevation is carried out by reducing the operating water level, and the foundation seepage-proofing reinforcing treatment below the elevation can be carried out under the water level.
And (3) performing dam foundation excavation, shore toe board and foundation grouting gallery structure foundation excavation and traffic gallery foundation excavation according to the design requirements of the concrete panel rock-fill dam, wherein the foundation grouting gallery structure is formed by groove excavation according to the body type of the foundation grouting gallery structure, and expanding and excavating anchoring grooves in the structural joint I part of the foundation grouting gallery structure.
Pouring a foundation grouting gallery structure body of a river bed and two banks, wherein copper sheet water stopping I is pre-buried in concrete of the gallery structure body corresponding to a structural joint I; and a water collecting well is arranged at the lowest elevation position of the bottom plate at the river bed part, and water stopping copper sheets II connected with shore toe boards are embedded in the end parts of the two sides of the foundation grouting gallery structure body.
And pouring a concrete gallery structure of the traffic galleries on both sides. The method comprises the following steps of firstly pouring an upstream part intersected with a foundation grouting gallery structure body, wherein traffic galleries in the concrete panel rock-fill dam body can be arranged according to the dam body construction time sequence.
And performing consolidation grouting and curtain grouting construction on the foundation of the foundation grouting gallery structure body according to the sequence of consolidation and curtain grouting.
And drilling holes in the range of the shore toe board foundation to install foundation anchor bars.
And pouring the shore toe board, wherein the shore toe board comprises a pre-embedded copper sheet water stop in a structural seam of the toe board.
And performing shore toe board foundation consolidation grouting and curtain grouting construction according to the sequence of consolidation and curtain grouting.
The construction method comprises the following steps of constructing the parts above the ground according to the construction process requirements of the concrete panel rock-fill dam, and comprising peripheral joint downstream special bedding materials, dam body filling, concrete panels, wave walls, surface water stopping structures, downstream dam face protection and the like.
Claims (10)
1. The utility model provides a take concrete panel rock-fill dam structure of basic grout corridor which characterized in that: the toe board structure of the upstream surface of the concrete panel rock-fill dam is divided into a foundation grouting gallery structure body corresponding to a riverbed and a low-elevation area of two banks and an onshore toe board corresponding to a high-elevation area of the two banks;
grouting galleries in the foundation grouting gallery structure body are communicated to the outside of a downstream dam body of the concrete panel rock-fill dam through traffic galleries at two banks.
2. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: a water stopping structure I is arranged at the position corresponding to the structural joint I of the foundation grouting gallery structure; and a structural joint II is arranged between the foundation grouting gallery structure body and the shore toe board, and a water stopping structure II is arranged corresponding to the structural joint II.
3. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 2, wherein: the water stopping structure I comprises a copper sheet water stopping I and a surface bulge type water stopping I;
the copper sheet water stop I is positioned in the foundation grouting gallery structure body and on the upstream side of the grouting gallery, one end of the copper sheet water stop I is connected with a bottom copper sheet water stop of a peripheral seam on the upstream surface of the concrete panel rock-fill dam, and the other end of the copper sheet water stop I extends into a bottom anchoring groove below the foundation grouting gallery structure body and is anchored;
the surface bulge type water stopping I is arranged along the top structural joint I of the foundation grouting gallery structure in a cross-joint covering mode, one end of the surface bulge type water stopping I is connected with the surface bulge type water stopping on the peripheral joints into a whole, and the other end of the surface bulge type water stopping I extends into a rock anchoring groove on the rock mass on the upstream side of the foundation grouting gallery structure.
4. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 2, wherein: the water stopping structure II comprises a copper sheet water stopping structure II and a surface bulge type water stopping structure II;
the copper sheet water stop II is arranged across a structural joint II, two sides of the copper sheet water stop II are respectively connected with the foundation grouting gallery structure body and the shore toe board, one end of the copper sheet water stop II is connected with a bottom copper sheet water stop of a peripheral joint on the upstream surface of the concrete panel rock-fill dam, and the other end of the copper sheet water stop II is anchored in a toe board lower anchoring groove below the shore toe board;
and the surface bulge type water stop II is arranged along the top of the structural joint II between the foundation grouting gallery and the shore toe board in a spanning manner, one end of the surface bulge type water stop II is connected with the surface bulge type water stop of the peripheral joint into a whole, and the other end of the surface bulge type water stop II extends into the foundation anchoring groove at the upper end of the structural joint II and the top of the foundation grouting gallery structure.
5. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: and the toe board foundation below the shore toe board is provided with foundation anchor bars, consolidation grouting and curtain grouting.
6. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: and the foundation below the foundation grouting gallery structure body is provided with consolidation grouting and curtain grouting.
7. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: and special cushion materials are arranged in the dam body of the concrete panel rock-fill dam on the downstream side of the peripheral seams.
8. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: the two sides of the bottom plate of the grouting gallery in the foundation grouting gallery structure are provided with drainage ditches, and the part of the grouting gallery corresponding to the bank slope is provided with a pedestrian step.
9. The concrete panel rock-fill dam structure with a foundation grouting gallery of claim 1, wherein: the traffic corridor adopts the concrete corridor structure of burying concrete panel rock-fill dam body, and concrete corridor structure basis is located on the natural basis after the excavation, is equipped with the transition material district that is not less than 1m thick between the dam body and the concrete corridor structure outside.
10. A construction method of a concrete panel rock-fill dam structure with a foundation grouting gallery according to any one of claims 1 to 9, characterized in that:
determining the arrangement elevation of the foundation grouting gallery structure, wherein the elevation is a water level operation sensitive water level or a designed emptying facility limiting water level, the foundation seepage-proofing reinforcement treatment above the elevation is carried out by reducing the operation water level, and the foundation seepage-proofing reinforcement treatment below the elevation is carried out under the water level;
performing dam foundation excavation, excavation of shore toe boards and foundation grouting gallery structure foundations and excavation of two-shore traffic gallery foundations, wherein the foundation grouting gallery structure foundations are formed by groove excavation according to body types of the foundation grouting gallery structure foundations, and bottom anchoring grooves are excavated in the positions corresponding to the structural joint I of the foundation grouting gallery structure;
pouring a foundation grouting gallery structure body, wherein the foundation grouting gallery structure body comprises a copper sheet water stop I pre-buried in the foundation grouting gallery structure body, a water collecting well is arranged at the lowest elevation position of a bottom plate of a river bed part, and water stop copper sheets II connected with shore toe boards are pre-buried at the end parts of two sides of the foundation grouting gallery structure body;
pouring a concrete gallery structure of the two-bank traffic gallery;
performing consolidation grouting and curtain grouting construction on the foundation of the foundation grouting gallery structure according to the sequence of consolidation and curtain grouting;
drilling holes in the range of the shore toe board foundation to install foundation anchor bars;
pouring a shore toe board;
performing consolidation grouting and curtain grouting construction on the shore toe board foundation according to the sequence of consolidation and curtain grouting;
and constructing the part above the ground according to the construction process requirement of the concrete panel rock-fill dam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171645.1A CN112832204A (en) | 2021-02-08 | 2021-02-08 | Concrete face rockfill dam structure with foundation grouting gallery and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110171645.1A CN112832204A (en) | 2021-02-08 | 2021-02-08 | Concrete face rockfill dam structure with foundation grouting gallery and its construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1572696A (en) * | 1975-11-22 | 1980-07-30 | Vredestein Nv | Injection-sealable water-stop and method of installing same |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
| CN203440801U (en) * | 2013-09-13 | 2014-02-19 | 中国水电顾问集团成都勘测设计研究院有限公司 | Curtain grouting drainage gallery for underground powerhouse |
| CN104131536A (en) * | 2014-07-11 | 2014-11-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam concrete panel horizontal structure seam setting method and structure |
| CN215977136U (en) * | 2021-02-08 | 2022-03-08 | 中国电建集团华东勘测设计研究院有限公司 | Concrete panel rock-fill dam structure with foundation grouting gallery |
-
2021
- 2021-02-08 CN CN202110171645.1A patent/CN112832204A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1572696A (en) * | 1975-11-22 | 1980-07-30 | Vredestein Nv | Injection-sealable water-stop and method of installing same |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
| CN203440801U (en) * | 2013-09-13 | 2014-02-19 | 中国水电顾问集团成都勘测设计研究院有限公司 | Curtain grouting drainage gallery for underground powerhouse |
| CN104131536A (en) * | 2014-07-11 | 2014-11-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam concrete panel horizontal structure seam setting method and structure |
| CN215977136U (en) * | 2021-02-08 | 2022-03-08 | 中国电建集团华东勘测设计研究院有限公司 | Concrete panel rock-fill dam structure with foundation grouting gallery |
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