CN112921900A - Seepage-proofing structure for double-channel anchoring of geomembrane and asphalt concrete panel - Google Patents
Seepage-proofing structure for double-channel anchoring of geomembrane and asphalt concrete panel Download PDFInfo
- Publication number
- CN112921900A CN112921900A CN202110123371.9A CN202110123371A CN112921900A CN 112921900 A CN112921900 A CN 112921900A CN 202110123371 A CN202110123371 A CN 202110123371A CN 112921900 A CN112921900 A CN 112921900A
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- China
- Prior art keywords
- anchoring
- asphalt concrete
- concrete panel
- geomembrane
- boss
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention discloses an anti-seepage structure for double-channel anchoring of a geomembrane and an asphalt concrete panel, which comprises the following components: the reinforced concrete connecting plate is located on the high filling body at the bottom of the warehouse, and the top surface of one side of the reinforced concrete connecting plate is upwards bulged to form a boss; the geomembrane is paved on the top surface of the boss of the reinforced concrete connecting plate and is fixedly connected with the boss by adopting a first anchoring part; the bottom end of the asphalt concrete panel extends downwards to the step surface of the reinforced concrete connecting plate and is abutted with the side wall of the boss; excavating the top surface of the asphalt concrete panel close to one side of the boss to form a groove, and backfilling elastic concrete in the groove; one end of the cover plate is anchored on the top surface of the boss through a first anchoring part, and the other end of the cover plate is anchored on the elastic concrete through a second anchoring part; the geomembrane, the asphalt concrete panel, the reinforced concrete connecting plate and the cover plate form a double-anchoring anti-seepage structure with stronger adaptive deformability and reliable operation under the matching of the first anchoring piece and the second anchoring piece.
Description
Technical Field
The invention relates to the field of hydraulic and hydroelectric engineering, in particular to an anti-seepage structure for double-channel anchoring of a geomembrane and an asphalt concrete panel.
Background
With the rapid development of water conservancy and hydropower engineering, sites with excellent topographic and geological conditions are less and less. Under the condition of complex terrain and geology, in order to meet the requirement of damming and reservoir formation, certain reservoir basin seepage prevention measures are often adopted. When the hydrogeological conditions of the reservoir basin have obvious zoning characteristics or the requirements of deformation and bearing capacity of the foundation surface of different parts are met, a combined seepage-proofing mode is generally adopted.
The asphalt concrete panel has the characteristics of good anti-seepage performance, convenient construction and the like, and is adopted by more and more projects; in recent years, with the continuous progress of geosynthetics, geomembranes are increasingly applied to some high-filling warehouse basin seepage-proofing projects due to strong adaptive deformability.
In order to ensure that the connection of the anti-seepage structure is reliable, the peripheral lap joint in the geomembrane anti-seepage engineering needs to be mechanically anchored by bolts, and because the strength of asphalt concrete is low, the geomembrane is difficult to be directly anchored on an asphalt concrete panel, so that although the asphalt concrete and the geomembrane have better basic deformation adapting capability, the adoption of the asphalt concrete panel on the bank and the geomembrane on the bottom of the reservoir is a better anti-seepage type, but is limited by the factor that the anti-seepage bodies of the asphalt concrete panel and the geomembrane are difficult to be anchored and connected, and at present, an engineering example of the combined anti-seepage of the asphalt concrete panel and the geomembrane does.
For asphalt concrete panels and geomembranes on dams and high-fill bodies, large deformation is generated after water storage of reservoirs, and if the adaptive deformation capability of a lap joint structure is poor, concentrated leakage channels are likely to be generated to influence the safety of the dams.
Therefore, how to adopt certain engineering measures enables the connection structure of the geomembrane and the asphalt concrete panel to have stronger adaptive deformability under the action of reservoir water load and to operate reliably, and the connection structure is an important technology in water conservancy and hydropower engineering.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at asphalt concrete panels and geomembrane anti-seepage bodies, the double-channel anchoring anti-seepage connecting structure is safe, reliable, simple and easy in structure and convenient to construct.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure, which comprises:
the reinforced concrete connecting plate is located on the high filling body at the bottom of the warehouse, and the top surface of one side of the reinforced concrete connecting plate is upwards bulged to form a boss;
the geomembrane is paved on the top surface of the boss of the reinforced concrete connecting plate and is fixedly connected with the boss by adopting a first anchoring part;
the bottom end of the asphalt concrete panel extends downwards to the step surface of the reinforced concrete connecting plate and is abutted with the side wall of the boss; the top surface of the asphalt concrete panel close to one side of the boss is excavated to form a groove, and elastic concrete is backfilled in the groove and is tightly fused with the asphalt concrete panel; and
one end of the cover plate is anchored on the top surface of the boss through a first anchoring part, and the other end of the cover plate is anchored on the elastic concrete through a second anchoring part; the geomembrane, the asphalt concrete panel, the reinforced concrete connecting plate and the cover plate form a double-anchoring anti-seepage structure under the cooperation of the first anchoring piece and the second anchoring piece.
As a preferable technical solution of the present invention, the anchoring end of the cover plate on the side of the second anchoring member extends a length to the asphalt concrete panel, and then is adhered to the asphalt concrete panel, and the edge of the cover plate is sealed with an edge sealing agent.
As a preferable technical scheme of the invention, a plastic water stopping material is arranged between the asphalt concrete panel and the step surface of the reinforced concrete connecting plate.
As a preferable technical scheme of the invention, a section of length is reserved between the first anchoring piece and the second anchoring piece by the cover plate, and a plastic water stopping material is filled below the section of cover plate to form a bulge.
As a preferable technical scheme of the invention, the first anchoring piece and the second anchoring piece are both composed of expansion bolts and stainless steel angle steel.
As a preferable technical scheme of the invention, the top surface of the boss is flush with the top surface of the bottom end of the asphalt concrete panel.
As a preferred technical scheme of the invention, the cover sheet is a chloroprene rubber cover sheet.
As a preferable technical solution of the present invention, the elastic concrete is elastic epoxy concrete.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) set up the concrete connecting plate between asphalt concrete and the geomembrane, the connecting plate is located high filling body, adopts geomembrane, chloroprene rubber cover plate etc. to cover the connecting plate completely to adopt twice anchor fixed, avoided the concrete connecting plate probably to appear because of deformation fracture, asphalt concrete and local reasons such as throw off and then cause reservoir seepage scheduling problem with the connecting plate.
(2) The elastic modulus of the elastic epoxy concrete is only about one tenth of that of concrete, the elastic epoxy concrete has the characteristics of low elastic modulus, high tensile strength and good flexibility, and the elastic epoxy concrete is embedded into the asphalt concrete, can better adapt to the deformation of an asphalt concrete panel, is used as an anchoring body of a second anchoring structure, and has a more ideal anchoring effect.
(3) The chloroprene rubber cover sheet has better flexibility than a geomembrane, the chloroprene rubber cover sheet is arranged between the first anchoring structure and the second anchoring structure, and extends for a certain distance to the downstream asphalt concrete panel, so that the chloroprene rubber cover sheet is better in fitting property with the asphalt concrete panel, is easier to be bonded and connected, and has a better anti-seepage effect. The plastic water stop material is arranged under the chloroprene rubber cover plate, and gaps and defects generated by the connecting structure can be filled under the action of water pressure, so that water leakage is avoided.
(4) The mode of slotting on the asphalt concrete panel and filling the elastic epoxy concrete is adopted for anchoring, the structure is simple, and the construction is convenient.
In conclusion, two anchors are arranged on the reinforced concrete connecting plate, so that the connecting plate seepage-proofing structure on the high filling body can better adapt to deformation generated after water storage, and the seepage risk caused by the separation of the seepage-proofing joint after the connecting plate deforms is avoided.
Drawings
FIG. 1 is a schematic plan view of the present invention;
fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.
Reference numerals: 1-a geomembrane; 2-asphalt concrete panels; 3-reinforced concrete connecting plates; 4-high fill; 5-elastic concrete; 6-a first anchor; 7-a second anchor; 8-plastic water stop material; 9-cover plate; 10-edge sealing agent; 11-expansion bolts; 12-stainless steel angle iron; 13-a boss; 14-step surface.
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 are not to be construed as limiting the present patent.
The invention will be further described with reference to the accompanying figures 1 and 2 and examples, but without limiting the invention thereto.
As shown in fig. 1 and 2, the present embodiment provides an anti-seepage structure with two anchors for geomembrane and asphalt concrete panel, which comprises a geomembrane 1, an asphalt concrete panel 2, a reinforced concrete connecting plate 3 and a cover sheet 9, wherein the geomembrane 1 is connected with the asphalt concrete panel 2 by the reinforced concrete connecting plate 3, and two anchors are respectively arranged on the reinforced concrete connecting plate 3 and the elastic concrete 5 filled in the asphalt concrete panel 2 to form the anti-seepage structure.
In the embodiment, the reinforced concrete connecting plate 3 is positioned on the high filling body 4 at the bottom of the reservoir, and the top surface of one side of the reinforced concrete connecting plate is upwards raised to form a boss 13 in a step shape; the geomembrane 1 is paved on the top surfaces of the bosses 13 of the reinforced concrete connecting plates 3 and is fixedly connected with the bosses 13 through first anchoring parts 6.
In the embodiment, the bottom end of the asphalt concrete panel 2 extends downwards to the step surface 14 of the reinforced concrete connecting plate 3 and is abutted against the side wall of the boss 13; the top surface of the asphalt concrete panel 2 close to one side of the boss is excavated to form a groove, and elastic concrete 5 is backfilled in the groove and is tightly fused with the asphalt concrete panel 2; the elastic concrete 5 is preferably elastic epoxy concrete in this embodiment. The specific grooving size is determined according to the running water head of the reservoir, an indoor model test and the principle of no water seepage under the designed water head. After the asphalt concrete panel 2 is grooved, the thickness of the lower part still needs to meet the requirements of an anti-seepage panel.
In the embodiment, one end of the cover plate 9 is anchored on the top surface of the boss through a first anchoring part 6, and the other end is anchored on the elastic concrete 5 through a second anchoring part 7; the first anchoring piece 6 and the second anchoring piece 7 are both composed of expansion bolts 11 and stainless steel angle steels 12, and the expansion bolts 6 are anchored on the stainless steel angle steels 12 at equal intervals. The cover plate 9 is reserved with a length between the first anchoring piece 6 and the second anchoring piece 7, and a plastic water stopping material 8 is filled below the cover plate 9 to form a bulge. The preferred cover 9 of this embodiment is a neoprene cover.
Further, the anchoring end of the cover plate 9 on the side of the second anchoring member 7 extends to the asphalt concrete panel 2 for a certain length, and then is adhered to the asphalt concrete panel 2, and the edge of the cover plate 9 is sealed by the edge sealing agent 10. The geomembrane 1, the asphalt concrete panel 2, the reinforced concrete connecting plate 3 and the cover plate 9 form a double-anchoring anti-seepage structure under the cooperation of the first anchoring piece 6 and the second anchoring piece 7.
Further, a plastic water stop material 8 is arranged between the asphalt concrete panel 2 and the step surface 14 of the reinforced concrete connecting plate 3.
According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the impermeable structure of the invention for double-channel anchoring of geomembrane and asphalt concrete panels, and can generate the positive effects recorded in the invention.
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 in light of the specific circumstances in conjunction with the accompanying drawings.
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 (8)
1. The utility model provides an impervious structure of geomembrane and bituminous concrete panel double-track anchor which characterized in that includes:
the reinforced concrete connecting plate (3) is located on the high filling body (4) at the bottom of the warehouse, and the top surface of one side of the reinforced concrete connecting plate is upwards bulged to form a boss (13);
the geomembrane (1) is paved on the top surface of a boss (13) of the reinforced concrete connecting plate (3) and is fixedly connected with the boss (13) by adopting a first anchoring part (6);
the bottom end of the asphalt concrete panel (2) extends downwards to the step surface (14) of the reinforced concrete connecting plate (3) and is abutted against the side wall of the boss (13); the top surface of the asphalt concrete panel (2) close to one side of the boss (13) is excavated to form a groove, and elastic concrete (5) is backfilled in the groove and is tightly fused with the asphalt concrete panel (2); and
a cover plate (9), one end of which is anchored on the top surface of the boss (13) through a first anchoring piece (6), and the other end of which is anchored on the elastic concrete (5) through a second anchoring piece (7); the geomembrane (1), the asphalt concrete panel (2), the reinforced concrete connecting plate (3) and the cover plate (9) form a double-anchoring anti-seepage structure under the matching of the first anchoring piece (6) and the second anchoring piece (7).
2. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: and the anchoring end of the cover plate (9) on the side of the second anchoring piece (7) extends to the asphalt concrete panel (2) for a certain length and then is adhered to the asphalt concrete panel (2), and the edge of the cover plate (9) is sealed by adopting an edge sealing agent (10).
3. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: and a plastic water stopping material (8) is arranged between the asphalt concrete panel (2) and the step surface (14) of the reinforced concrete connecting plate (3).
4. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: the cover plate (9) is reserved with a length between the first anchoring piece (6) and the second anchoring piece (7), and a plastic water stop material (8) is filled below the cover plate (9) to form a bulge.
5. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: the first anchoring piece (6) and the second anchoring piece (7) are both composed of expansion bolts (11) and stainless steel angle steel (12).
6. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: the top surface of the boss (13) is flush with the top surface of the bottom end of the asphalt concrete panel (2).
7. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: the cover plate (9) is a chloroprene rubber cover plate.
8. The geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure according to claim 1, wherein: the elastic concrete (5) is elastic epoxy concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110123371.9A CN112921900B (en) | 2021-01-29 | 2021-01-29 | Geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110123371.9A CN112921900B (en) | 2021-01-29 | 2021-01-29 | Geomembrane and asphalt concrete panel double-channel anchoring anti-seepage structure |
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| Publication Number | Publication Date |
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| CN112921900A true CN112921900A (en) | 2021-06-08 |
| CN112921900B CN112921900B (en) | 2022-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463573A (en) * | 2021-06-16 | 2021-10-01 | 中国电建集团华东勘测设计研究院有限公司 | Asphalt concrete panel-geomembrane anti-seepage system and construction method thereof |
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| CN1213029A (en) * | 1998-10-15 | 1999-04-07 | 国家电力公司华东勘测设计研究院科学研究所 | Anti-leakage water-tight structure used for water conservancy and water power engineering |
| CN2892960Y (en) * | 2006-03-29 | 2007-04-25 | 中国水电顾问集团华东勘测设计研究院 | Structure for reservoir bottom filling burying waste slags |
| CN104120686A (en) * | 2014-07-28 | 2014-10-29 | 中国电建集团西北勘测设计研究院有限公司 | High elastic die cushion type composite dam |
| CN111305158A (en) * | 2019-12-25 | 2020-06-19 | 中国电建集团中南勘测设计研究院有限公司 | Seepage-proofing structure of concrete faced rockfill dam |
| CN210917260U (en) * | 2019-10-15 | 2020-07-03 | 中国电建集团中南勘测设计研究院有限公司 | Drainage structure under reservoir bottom anti-seepage geomembrane |
-
2021
- 2021-01-29 CN CN202110123371.9A patent/CN112921900B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213029A (en) * | 1998-10-15 | 1999-04-07 | 国家电力公司华东勘测设计研究院科学研究所 | Anti-leakage water-tight structure used for water conservancy and water power engineering |
| CN2892960Y (en) * | 2006-03-29 | 2007-04-25 | 中国水电顾问集团华东勘测设计研究院 | Structure for reservoir bottom filling burying waste slags |
| CN104120686A (en) * | 2014-07-28 | 2014-10-29 | 中国电建集团西北勘测设计研究院有限公司 | High elastic die cushion type composite dam |
| CN210917260U (en) * | 2019-10-15 | 2020-07-03 | 中国电建集团中南勘测设计研究院有限公司 | Drainage structure under reservoir bottom anti-seepage geomembrane |
| CN111305158A (en) * | 2019-12-25 | 2020-06-19 | 中国电建集团中南勘测设计研究院有限公司 | Seepage-proofing structure of concrete faced rockfill dam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463573A (en) * | 2021-06-16 | 2021-10-01 | 中国电建集团华东勘测设计研究院有限公司 | Asphalt concrete panel-geomembrane anti-seepage system and construction method thereof |
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| CN112921900B (en) | 2022-06-07 |
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