CN114960707A - Inclined wall geomembrane earth rock cofferdam structure suitable for higher manger plate flood peak of geomembrane - Google Patents
Inclined wall geomembrane earth rock cofferdam structure suitable for higher manger plate flood peak of geomembrane Download PDFInfo
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- CN114960707A CN114960707A CN202210574172.4A CN202210574172A CN114960707A CN 114960707 A CN114960707 A CN 114960707A CN 202210574172 A CN202210574172 A CN 202210574172A CN 114960707 A CN114960707 A CN 114960707A
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- 239000011435 rock Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 38
- 239000004575 stone Substances 0.000 claims description 24
- 239000004567 concrete Substances 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 17
- 238000004873 anchoring Methods 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 18
- 238000003466 welding Methods 0.000 abstract description 6
- 239000011378 shotcrete Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 241000124879 Grus leucogeranus Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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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
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses an inclined wall geomembrane earth-rock cofferdam structure suitable for a geomembrane with a higher water retaining head, which comprises a cofferdam body, an impervious wall arranged on the water facing side of the cofferdam body and a protective structure arranged at the top of the impervious wall and having a certain width; a berm with a certain width is arranged on a slope between the protective structure and the top of the cofferdam body, and a geomembrane is laid on the slope from top to bottom; all be provided with the anchor ditch that is used for fixed geomembrane on cofferdam body top and the packway, wherein the packway sets up two anchor ditches. The structural form has the characteristics of small difficulty in geomembrane welding construction, simple and convenient construction of the transverse expansion joint, high safety and stability of the cofferdam side slope and the like.
Description
Technical Field
The invention relates to the field of temporary water retaining of river upstream of foundation pit dry land construction of a retaining hub engineering in large and medium hydraulic and hydroelectric engineering, in particular to an inclined wall geomembrane earth-rock cofferdam structure suitable for a geomembrane with a higher water retaining head.
Background
The inclined wall geomembrane earth rock cofferdam has the characteristics of high ascending speed of weir body filling, convenience in geomembrane laying and welding, no mutual interference between weir body filling and geomembrane laying, convenience in later-stage maintenance and the like, is widely applied to hydraulic and hydroelectric construction engineering, has a water retaining head of the inclined wall geomembrane below 35m generally, and can reach 43m along with the development and construction of western giant hydroelectric engineering, such as the upper-stream inclined wall geomembrane earth rock cofferdam of brocade one-level and two hydroelectric engineering of white crane beach, and the water retaining head of the inclined wall geomembrane is greatly improved. Under the condition that the water retaining head of the geomembrane of the inclined wall is higher (more than 35m), the single-stage gradient of the cofferdam for laying the geomembrane is higher, and because an operation platform is lacked in the middle, the difficulty of laying construction and welding of the geomembrane is increased, and the anti-seepage performance of the geomembrane is indirectly influenced; secondly, the geomembrane is designed to have a high water retaining head, the deformation is correspondingly increased after water retaining, a corresponding expansion joint needs to be arranged, and the expansion joint is very inconvenient to arrange and construct on the slope of the earth and rock of the higher single-stage cofferdam, so that the construction quality of the geomembrane and the seepage-proofing performance after water retaining are influenced; finally, if the interlayer stability between the geomembrane and the cushion layer of the high (more than 35m) single-stage cofferdam earth-rock slope is partially not satisfied, the stability between the geomembrane and the cushion layer of the surrounding rock slope of the whole upper slope surface can be influenced under the action of gravity.
Based on the situation, the invention provides the inclined wall geomembrane earth-rock cofferdam structure suitable for the geomembrane with higher water retaining head, and the problems can be effectively solved.
Disclosure of Invention
In order to solve the problems, the invention mainly aims to provide a structural form of a geomembrane cofferdam applicable to inclined walls with geomembranes with higher water retaining heads (more than 35m), and the structural form has the characteristics of small difficulty in geomembrane welding construction, simple and convenient construction of transverse expansion joints, high safety and stability of cofferdam side slopes and the like.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the inclined-wall geomembrane earth-rock cofferdam structure suitable for the geomembrane with a higher water retaining head comprises a cofferdam body, an impervious wall arranged on the water facing side of the cofferdam body and a protective structure arranged at the top of the impervious wall and having a certain width; a berm with a certain width is arranged on a slope between the protective structure and the top of the cofferdam body, and a geomembrane is laid on the slope from top to bottom; all be provided with the anchor ditch that is used for fixed geomembrane on cofferdam body top and the packway, wherein set up two anchor ditches on the packway, make the geomembrane arrange and be the style of calligraphy of several.
Preferably, concrete slabs are arranged on bank slopes on two sides of the cofferdam body, the geomembrane is connected with the cap concrete on the top of the impervious wall and the concrete slabs in a burying or anchoring mode, and curtain grouting is arranged on the bottom of the impervious wall and the concrete slabs to form a closed impervious system.
Preferably, the cofferdam body comprises an anti-seepage section below the elevation of the protective structure and a water retaining section above the elevation, the anti-seepage section comprises large stones, second transition materials, fine stone slag materials, first transition materials, a cut-off prop dam, second stone slag materials and a drainage ridge body which are sequentially arranged along the water flow direction, and the water retaining section comprises rolled stone slag materials above the anti-seepage section.
Further preferably, the interception dike is positioned at the downstream side of the impervious wall, and the horizontal distance between the water-facing side slope foot of the interception dike and the axis of the impervious wall is not less than 15 m.
Preferably, the horse way is further provided with two geomembrane anchoring ditches, and the geomembrane is arranged in a shape like a Chinese character 'ji' and also plays a role of an expansion joint.
Preferably, the upper part of the geomembrane is provided with sprayed concrete, and the lower part of the geomembrane is paved with a bedding material and a third transition material.
Preferably, the reversed V-shaped road is arranged from the backwater side of the cofferdam body to the foundation pit at the backwater side of the cofferdam, and the width of the reversed V-shaped road is 5-10 m.
Preferably, the slope ratio of the side slope above the elevation of the protective structure is 1: 2-2.5, the slope ratio of the side slope below the elevation of the protective structure is 1:1.5, and the slope ratio of the side slope of the backwater is 1: 1.6-1.8.
Preferably, the width of the protective structure is not less than 20m, and the protective structure comprises dry masonry stones, a fourth transition material, a bedding material and gravel soil which are sequentially arranged from top to bottom.
Preferably, the streets have a width of 3 to 5 m.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the berm is arranged in the middle of the weir slope below the inclined wall geomembrane, so that the operation height of the single-stage side slope is reduced, an operation platform is added, the geomembrane construction welding is facilitated, and the geomembrane welding quality and the water retaining performance of the geomembrane are improved; (2) a first-level packway is arranged in the middle of a weir slope on which the inclined-wall geomembrane is laid, so that the stability of the upstream side slope of the cofferdam is improved; (3) set up the two anchor ditches of geomembrane on the packway, make the geomembrane be the odd font and play the telescopic joint effect concurrently, improved the aspect stability between geomembrane and the weir slope, be favorable to adapting to the deformation of geomembrane simultaneously, reduce the geomembrane and tear the possibility of destruction.
Drawings
FIG. 1 is a schematic view of a cofferdam planar arrangement of the present invention;
FIG. 2 is a schematic view of a representative cross-sectional configuration of a cofferdam of the present invention;
FIG. 3 is a detailed structural schematic diagram of the guard structure at A in FIG. 2;
fig. 4 is a detailed structural diagram of the street in fig. 2 at B.
Reference numerals: 1-curtain grouting; 2-a concrete slab; 3-riding a street; 4- "zigzag" shaped road; 5-closure prop dam; 601-first transition material; 602-a second transition material; 603-a third transition material; 604-fourth transition material; 701-first slag charge; 702 — second ballast; 8-fine ballast; 9-impervious wall; 901-capping concrete; 10-boulder; 11-drainage arris; 12-rolling stone slag; 13-bedding material; 14-geomembrane; 15-spraying concrete; 16-crushed rock soil; 17-dry masonry block stone; 18-a cover layer; 19-bedrock.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.
The present invention will be further described with reference to the following examples and figures 1-4, but the invention is not limited thereto.
As shown in fig. 1 to 4, the embodiment provides an inclined-wall geomembrane earth-rock cofferdam structure suitable for a geomembrane with a high water retaining head, which includes a cofferdam body, a cut-off wall 9 arranged on the water facing side of the cofferdam body, and a protective structure arranged on the top of the cut-off wall 9 and having a certain width; a ramp between the protective structure and the top of the cofferdam body is provided with a pavement 3 with a certain width, and a geomembrane 14 is laid on the ramp from top to bottom; the top of the cofferdam body and the berm 3 are both provided with double anchoring ditches for fixing the geomembrane 14, the geomembrane 14 on the berm 3 is combined with the double anchoring ditches to be shaped like a Chinese character 'ji', and the berm also plays a role of an expansion joint, and the width of the berm 3 is 3-5 m. 15 cm-20 cm of sprayed concrete is arranged above the geomembrane 14, the sprayed concrete 15 is partitioned into blocks according to the size of 3m multiplied by 3m, and a bedding material 13 and a third transition material 603 are laid below the geomembrane.
In this embodiment, the cofferdam body includes an anti-seepage section below the elevation of the protective structure and a water retaining section above the elevation, the anti-seepage section includes a large stone 10, a second transition material 602, a fine stone slag 8, a first stone slag 701, a first transition material 601, a cut-off embankment 5, a second stone slag 702 and a drainage ridge 11 which are arranged in sequence along the water flow direction, and the water retaining section includes a rolling stone slag 12 located above the anti-seepage section. The backwater side of the cofferdam body is provided with a zigzag road 4 to a foundation pit at the backwater side of the cofferdam, and the width of the zigzag road 4 is 5-10 m.
In this embodiment, concrete slabs 2 are arranged on the bank slopes on both sides of the cofferdam body, the geomembrane 14 is connected with the cap concrete 901 on the top of the impervious wall 9 and the concrete slabs 2 in a burying or anchoring manner, curtain grouting 1 is arranged on the bottom of the impervious wall 9 and the concrete slabs 2, and the curtain grouting 1 penetrates through the covering layer 18 and penetrates into the bedrock 19 to a certain depth according to the requirements of relevant specifications to form a closed impervious system.
Furthermore, the interception dike 5 is positioned at the downstream side of the impervious wall 9, and the horizontal distance between the water-facing side slope foot of the interception dike 5 and the axis of the impervious wall 9 is not less than 15 m.
In the embodiment, the slope ratio of the side slope above the elevation of the protective structure is 1: 2-2.5, the slope ratio of the lower side slope is 1:1.5, and the slope ratio of the backwater side slope is 1: 1.6-1.8. The width of the protective structure is not less than 20m, and the protective structure comprises dry masonry blocks 17, a fourth transition material 604, a bedding material 13 and gravel soil 16 which are sequentially arranged from top to bottom.
Based on the above structure, this embodiment further provides a construction method of a cofferdam structure, including the following steps:
1. filling the part below the height of the protective structure
And (3) excavating and supporting the bank slopes on two sides of the cofferdam, pouring concrete slabs 2 of the bank slopes on two sides → advancing of the cut-off dike 5, and beginning construction of curtain grouting 1 in the communication hole on two banks → filling of a first transition material 601 at the upstream of the dike → filling of fine stone slag 8 → filling of a first stone slag 701, filling of a second transition material 602 → filling of a large block stone 10 → filling of a drainage ridge 11 → filling of a second stone slag 702.
2. Filling above the height of the protective structure
And (3) filling the crushed stone slag material 12 → filling the third transition material 603 and the bedding material 13.
3. Construction of impervious wall 9
After the large stone 10 is finished, the construction of the impervious wall 9 and the curtain grouting 1 at the bottom of the impervious wall 9 is started while the filling construction of other parts is carried out.
3. Geomembrane 14 construction
Double anchoring ditches are excavated at the position of the middle berm 3 → the geomembrane 14 is laid along the upstream slope of the cofferdam from top to bottom → the geomembrane 14 is connected with the cap concrete 901 at the top of the impervious wall 9 and the concrete slabs 2 of the bank slopes on two sides in a burying or anchoring mode → the geomembrane 14 at the position of the anchoring ditches is filled with bedding materials 13.
4. Construction of sprayed concrete 15
And (3) spraying concrete with the thickness of 20cm on the surface of the geomembrane 14, and parting the sprayed concrete 15 according to the length of 3m multiplied by 3 m.
5. Construction of protective structures
And filling gravels 16, bedding materials 13, fourth transition materials 604 and dry masonry blocks 17 from bottom to top in sequence.
According to the description and the drawings of the invention, the inclined wall geomembrane earth rock cofferdam structure suitable for the geomembrane with higher water retaining head can be easily manufactured or used by the technical personnel in the field, and the positive effects recorded by the invention can be generated.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art by referring to the drawings as appropriate. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. Inclined wall geomembrane earth rock cofferdam structure suitable for higher manger plate flood peak of geomembrane, its characterized in that: the cofferdam comprises a cofferdam body, an impervious wall (9) arranged on the water facing side of the cofferdam body and a protective structure with a certain width arranged at the top of the impervious wall (9); a ramp between the protective structure and the top of the cofferdam body is provided with a berm (3) with a certain width, and a geomembrane (14) is paved on the ramp from top to bottom; and the top of the cofferdam body and the pavement (3) are both provided with anchoring ditches for fixing the geomembrane (14).
2. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: concrete plates (2) are arranged on bank slopes on two sides of the cofferdam body, the geomembrane (14) is connected with the cap concrete (901) on the top of the impervious wall (9) and the concrete plates (2) in a burying or anchoring mode, and curtain grouting (1) is arranged on the bottom of the impervious wall (9) and the concrete plates (2) to form a closed impervious system.
3. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: the cofferdam body comprises an anti-seepage section below the elevation of the protective structure and a water retaining section above the elevation, the anti-seepage section comprises large stones (10), second transition materials (602), fine stone slag materials (8), first stone slag materials (701), first transition materials (601), a closure dam (5), second stone slag materials (702) and a drainage ridge body (11) which are sequentially arranged along the water flow direction, and the water retaining section comprises rolling stone slag materials (12) located above the anti-seepage section.
4. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 3, characterized in that: the interception dike (5) is positioned at the downstream side of the impervious wall (9), and the horizontal distance between the water-facing side slope foot of the interception dike (5) and the axis of the impervious wall (9) is not less than 15 m.
5. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: the geomembrane on the berm (3) is combined with the double anchoring ditches to be shaped like a Chinese character 'ji', and the geomembrane also plays a role of an expansion joint.
6. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: concrete spraying (15) is arranged above the geomembrane (14), and a bedding material (13) and a third transition material (603) are laid below the geomembrane.
7. The inclined-wall geomembrane earth-rock cofferdam structure suitable for the geomembrane with the higher water retaining head according to claim 1, characterized in that: the backwater side of the cofferdam body is provided with a zigzag road (4) to a foundation pit at the backwater side of the cofferdam, and the width of the zigzag road (4) is 5-10 m.
8. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: the slope ratio of the side slope above the elevation of the protective structure is 1: 2-2.5, the slope ratio of the lower side slope is 1:1.5, and the slope ratio of the backwater side slope is 1: 1.6-1.8.
9. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: the width of the protective structure is not less than 20m, and the protective structure comprises dry masonry stones (17), a fourth transition material (604), a bedding material (13) and gravel soil (16) which are sequentially arranged from top to bottom.
10. The inclined-wall geomembrane earth rock cofferdam structure suitable for the higher water-retaining head of geomembrane of claim 1, characterized in that: the width of the pavement (3) is 3-5 m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574172.4A CN114960707A (en) | 2022-05-24 | 2022-05-24 | Inclined wall geomembrane earth rock cofferdam structure suitable for higher manger plate flood peak of geomembrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574172.4A CN114960707A (en) | 2022-05-24 | 2022-05-24 | Inclined wall geomembrane earth rock cofferdam structure suitable for higher manger plate flood peak of geomembrane |
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| CN114960707A true CN114960707A (en) | 2022-08-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314089A (en) * | 2014-11-10 | 2015-01-28 | 中国水利水电第十四工程局有限公司 | Method for composite geo-membrane sloping core cofferdam |
| CN204212121U (en) * | 2014-11-12 | 2015-03-18 | 中国电建集团成都勘测设计研究院有限公司 | Cushion pool and dam joining place side wall construction |
| CN204626402U (en) * | 2015-01-27 | 2015-09-09 | 北京锄禾环保技术有限公司 | A kind of intermediate anchoring structure for the long slope seepage control layer of super large liquid storage tank |
| CN205444109U (en) * | 2016-01-08 | 2016-08-10 | 中国电建集团华东勘测设计研究院有限公司 | Can automatic adapt to composite geomembrane seepage prevention structure that weir body warp |
| CN205604186U (en) * | 2015-12-03 | 2016-09-28 | 云南润晶水利电力工程技术股份有限公司 | Clay core morals and manners material dam |
| CN111197300A (en) * | 2020-01-09 | 2020-05-26 | 中电建十一局工程有限公司 | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method |
| CN217870559U (en) * | 2022-05-24 | 2022-11-22 | 浙江华东工程建设管理有限公司 | Inclined wall geomembrane earth-rock cofferdam structure suitable for higher manger plate flood peak of geomembrane |
-
2022
- 2022-05-24 CN CN202210574172.4A patent/CN114960707A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314089A (en) * | 2014-11-10 | 2015-01-28 | 中国水利水电第十四工程局有限公司 | Method for composite geo-membrane sloping core cofferdam |
| CN204212121U (en) * | 2014-11-12 | 2015-03-18 | 中国电建集团成都勘测设计研究院有限公司 | Cushion pool and dam joining place side wall construction |
| CN204626402U (en) * | 2015-01-27 | 2015-09-09 | 北京锄禾环保技术有限公司 | A kind of intermediate anchoring structure for the long slope seepage control layer of super large liquid storage tank |
| CN205604186U (en) * | 2015-12-03 | 2016-09-28 | 云南润晶水利电力工程技术股份有限公司 | Clay core morals and manners material dam |
| CN205444109U (en) * | 2016-01-08 | 2016-08-10 | 中国电建集团华东勘测设计研究院有限公司 | Can automatic adapt to composite geomembrane seepage prevention structure that weir body warp |
| CN111197300A (en) * | 2020-01-09 | 2020-05-26 | 中电建十一局工程有限公司 | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method |
| CN217870559U (en) * | 2022-05-24 | 2022-11-22 | 浙江华东工程建设管理有限公司 | Inclined wall geomembrane earth-rock cofferdam structure suitable for higher manger plate flood peak of geomembrane |
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