Connecting structure for lapping geomembrane and asphalt concrete panel through concrete gallery

Abstract

The utility model relates to a connecting structure for lap joint of a geomembrane and an asphalt concrete panel through a concrete gallery. The method is suitable for water conservancy and hydropower engineering. According to the technical scheme, the geomembrane is arranged at the bottom of the reservoir; the asphalt concrete panel is arranged on the reservoir bank slope section of the reservoir, and the bottom of the asphalt concrete panel is provided with an asphalt concrete panel sliding layer used for lap joint; the concrete gallery is arranged at the joint of the reservoir bottom and the reservoir bank slope section of the reservoir, and the top slope surface is connected with an asphalt concrete panel sliding layer; the first anchoring structure is used for anchoring the geomembrane at the top of the concrete gallery; the first anti-seepage layer is arranged between the foundation surface of the first anchoring structure and the geomembrane, and the first anti-seepage layer is used for enhancing the anti-seepage capability of the first anchoring structure; and the second impermeable layer is arranged between the geomembrane and the first anchoring structure, and the second impermeable layer is used for enhancing the impermeable capacity of the lap joint part between the geomembrane and the asphalt concrete panel.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy and hydropower engineering technical field especially a kind of connecting structure of earthwork membrane and asphalt concrete faceplate through concrete corridor lap joint. BACKGROUND

[0002] For the reservoir periphery groundwater level lower or reservoir basin exists seepage channel reservoir, commonly used full reservoir basin seepage prevention scheme, full reservoir basin seepage prevention type is various, asphalt concrete faceplate seepage prevention with its construction convenient and fast, good deformation adaptability is adopted by a large number of engineering.And in recent years, with the continuous development of geomembrane material, its performance index greatly improves.Geomembrane is welded by hot melting, construction is more convenient, and deformation adaptability is better, and the engineering of seepage prevention using geomembrane is more and more.But geomembrane is greatly influenced by external environment, commonly used in reservoir bottom.Therefore, the joint seepage prevention type that reservoir periphery uses asphalt concrete faceplate and reservoir bottom uses geomembrane will become the first choice of more engineering.

[0003] Since geomembrane needs to be anchored and fixed, it is commonly anchored directly on reinforced concrete, while asphalt concrete faceplate is soft, and is prone to cracking and breaking after anchoring force, so it is difficult to form a complete seepage prevention system with geomembrane.Meanwhile, asphalt concrete faceplate is generally directly overlapped with reinforced concrete, and the overlapping part is often a weak link, and multiple engineering overlapping parts exist seepage.

[0004] Therefore, how to design a structure that can ensure smooth connection between geomembrane and asphalt concrete faceplate and form a complete and reliable seepage prevention system is an important technology in selecting the joint seepage prevention engineering of the two seepage prevention bodies. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is: in view of the above problems, a connecting structure of earthwork membrane and asphalt concrete faceplate through concrete corridor lap joint is provided.

[0006] The technical scheme adopted by the utility model is: a connecting structure of earthwork membrane and asphalt concrete faceplate through concrete corridor lap joint, characterized by comprising:

[0007] Earthwork membrane, arranged at the bottom of reservoir;

[0008] Asphalt concrete faceplate, arranged on the slope section of reservoir bank, the bottom of asphalt concrete faceplate is provided with asphalt concrete faceplate sliding layer for lap joint;

[0009] Concrete corridor, arranged at the junction of the bottom of reservoir and the slope section of reservoir bank, the top slope surface of concrete corridor is connected with asphalt concrete faceplate sliding layer;

[0010] The first anchoring structure is used to anchor the geomembrane to the top of the concrete gallery;

[0011] The first anti-seepage layer is arranged between the base surface of the first anchoring structure and the geomembrane, and is used to enhance the anti-seepage capability of the first anchoring structure;

[0012] The second anti-seepage layer is arranged between the geomembrane and the first anchoring structure, and extends to the side of the asphalt concrete panel until covering the joint between the concrete gallery and the asphalt concrete panel, and is used to enhance the anti-seepage capability of the overlapping part between the geomembrane and the asphalt concrete panel.

[0013] By means of the above technical means, the concrete gallery is used as the overlapping structure of the geomembrane and the asphalt concrete panel, the geomembrane is anchored to the top of the concrete gallery through the first anchoring structure, the asphalt concrete panel overlaps the concrete gallery, the first anti-seepage layer is used to enhance the anti-seepage capability of the first anchoring structure, and the second anti-seepage layer is used to cover the overlapping part of the geomembrane and the concrete panel, so as to improve the anti-seepage capability of the overlapping part.

[0014] In some embodiments, the first anti-seepage layer comprises, in sequence from the base surface of the first anchoring structure to the geomembrane, an SR primer, an SR slip layer and an SR anti-seepage strip.

[0015] In some embodiments, the SR primer and the SR slip layer both extend to the side of the bank slope section.

[0016] In some embodiments, the SR primer is 10-15 cm wide, the SR slip layer is 6 mm thick, and the SR anti-seepage strip is 6 mm thick.

[0017] In some embodiments, the second anti-seepage layer comprises an SR anti-seepage cover layer, and the SR primer and the SR anti-seepage cover layer are arranged in sequence from bottom to top between the geomembrane and the first anchoring structure, the SR anti-seepage cover layer extends to the bank slope section until the length of the SR anti-seepage cover layer covering the asphalt concrete panel is not less than 20 cm.

[0018] In some embodiments, the SR anti-seepage cover layer located at the part of the bank slope section is anchored through the second anchoring structure, and the covering part of the SR anti-seepage cover layer located at the top of the asphalt concrete panel is covered by a sand bag.

[0019] In some embodiments, the first anchoring structure and the second anchoring structure both comprise stainless steel angle steel and stainless steel chemical bolts, the anchoring interval of the first anchoring structure is 30-45 cm, and the anchoring interval of the second anchoring structure is 60-90 cm.

[0020] In some embodiments, the edges of the first anchoring structure and the second anchoring structure are both edged with elastic edge sealant.

[0021] In some embodiments, the bottom of the geomembrane is sequentially arranged from bottom to top with a lower cushion layer and a three-dimensional composite drainage net, the bottom of the asphalt concrete panel is arranged with a reservoir bank cushion material, the lower cushion layer and the reservoir bank cushion material are both arranged with a drainage pipe, the drainage pipe opens into the inside of the passageway of the concrete gallery, and the drainage pipe is used to collect the catchment of the water infiltration of the geomembrane to the lower cushion layer and the water infiltration of the asphalt concrete panel to the reservoir bank cushion material.

[0022] The utility model has the advantages of:

[0023] 1. The concrete gallery is used as the lap joint structure of the geomembrane and the asphalt concrete panel, the geomembrane is anchored on the top of the concrete gallery through the first anchoring structure, and the asphalt concrete panel is connected to the top of the concrete gallery through the asphalt concrete panel sliding layer, thereby solving the problem that the two impermeable bodies cannot be anchored. Meanwhile, the first anchoring structure is enhanced in impermeability by the first impermeable layer, and the lap joint part between the geomembrane and the asphalt concrete panel is covered by the second impermeable layer, wherein the second impermeable layer extends to cover the joint between the asphalt concrete panel and the concrete gallery, thereby reducing the risk of the formation of a leakage channel at the lap joint part of the asphalt concrete panel and the concrete, and improving the impermeability of the lap joint part.

[0024] 2. The concrete gallery can be used as the lap joint structure of the two impermeable bodies and as a monitoring passageway for the leakage water of the reservoir bottom and the reservoir bank, thereby improving the convenience of monitoring the leakage water of the reservoir basin.

[0025] 3. The geomembrane is anchored on the top of the concrete gallery by the stainless steel chemical bolts and the stainless steel angle steel in the first anchoring structure, and the bolt anchoring force is uniformly transmitted to the angle steel by the characteristics of the large rigidity of the angle steel and the large anchoring force of the chemical bolts, so that the bolt anchoring force can be well transmitted to the angle steel, and the reliability of the connection between the geomembrane and the concrete gallery is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a sectional structure schematic view of the application.

[0027] Fig. 2 It is a detailed view of the lap joint part in the application.

[0028] BRIEF DESCRIPTION OF DRAWINGS:

[0029] 1, concrete corridor; 2, geomembrane; 3, asphalt concrete panel; 4, reservoir bank cushion material; 5, lower cushion; 6, first anchoring structure; 7, second anchoring structure; 8, asphalt concrete panel slip layer; 9, three-dimensional composite drainage network; 10, SR primer; 11, SR slip layer; 12, SR impermeable adhesive strip; 13, SR impermeable cover sheet layer; 14, stainless steel chemical bolt; 15, stainless steel angle steel; 16, elastic sealing agent; 17, sand bag; 18, drain pipe.

[0030] This specification includes references to“one embodiment” or“the embodiment.” The appearance of the phrases“in one embodiment” or“in an embodiment” does not necessarily refer to the same embodiment. Particular features, structures, or characteristics can be combined in any suitable way in an embodiment that is consistent with this disclosure.

[0031] “includes”, this term is open. As used in the appended claims, this term does not exclude additional structures or steps.

[0032] “first”,“second”, and the like. As used herein, these terms act as labels for the nouns that they modify, and do not necessarily indicate any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0033] In order to make the technical personnel in the technical field better understand the technical scheme of the present application, the technical scheme of the present application will be further described in combination with specific embodiments.

[0034] In combination Figs. 1-2 As shown in the drawings, the embodiment is a connecting structure for connecting a geomembrane and an asphalt concrete panel through a concrete corridor, comprising a geomembrane 2, an asphalt concrete panel 3, a concrete corridor 1, a first anchoring structure 6, a first impermeable layer, and a second impermeable layer. The geomembrane 2 is arranged on the reservoir bottom, the asphalt concrete panel 3 is arranged on the reservoir bank slope section, the reservoir bottom and the reservoir bank slope section are connected by the concrete corridor 1, the geomembrane 2 is anchored to the top of the concrete corridor 1 through the first anchoring structure 6, the bottom of the asphalt concrete panel 3 is provided with an asphalt concrete panel slip layer 8, and the asphalt concrete panel 3 is connected to the top of the concrete corridor 1 through the asphalt concrete panel slip layer 8. In this way, the concrete corridor 1 is used as the connecting structure of the geomembrane 2 and the asphalt concrete panel 3. The first anchoring structure 6 is provided with a first impermeable layer between the base surface and the geomembrane 2, and the first impermeable layer is used to enhance the impermeability of the first anchoring structure 6. The second impermeable layer is provided between the geomembrane 2 and the first anchoring structure 6, extends to the side of the asphalt concrete panel 3, and covers the joint between the concrete corridor 1 and the asphalt concrete panel 3. The second impermeable layer is used to enhance the impermeability of the connecting part between the geomembrane 2 and the asphalt concrete panel 3.

[0035] Further, the lap joint length of the asphalt concrete panel slip layer 8 and the concrete gallery 1 needs to meet the seepage path requirement, generally not less than 1m.

[0036] In some embodiments, the bottom of the geomembrane 2 is sequentially arranged with the lower cushion layer 5 and the three-dimensional composite drainage net 9 from bottom to top, and the bottom of the asphalt concrete panel 3 is arranged with the reservoir bank cushion material 4. The lower cushion layer 5 and the reservoir bank cushion material 4 are both arranged with the drainage pipe 18, which leads to the inside of the passage of the concrete gallery 1. Specifically, the end of the drainage pipe 18 is arranged at the bottom of both sides of the passage of the concrete gallery 1. The drainage pipe 18 is used to collect the water collected by the lower cushion layer 5 and the reservoir bank cushion material 4, so that the concrete gallery 1 not only serves as the lap joint structure of the two impermeable bodies, but also can be used as a drainage and monitoring facility for the seepage water of the reservoir bank and the reservoir bottom, thereby improving the convenience of monitoring the seepage water of the reservoir basin.

[0037] In some embodiments, the first impermeable layer sequentially includes the SR primer 10, the SR slip layer 11 and the SR impermeable adhesive tape 12 from the base surface of the first anchoring structure 6 to the geomembrane 2. Specifically, the base surface of the anchoring part of the first anchoring structure 6 is polished and drilled, then the SR primer 10 is brushed, which is 10cm-15cm wide, then the SR slip layer 11 is laid, which is about 6mm thick, then the SR impermeable adhesive tape 12 is laid, which is about 6mm thick with the SR material facing upward, then the geomembrane 2 and the second impermeable layer are laid, and then the first anchoring structure 6 is anchored.

[0038] Further, the SR primer 10 and the SR slip layer 11 both extend to the side of the reservoir bank slope section, and the width is determined according to the length of the extension to the reservoir bank.

[0039] Further, the second impermeable layer includes the SR impermeable cover sheet layer 13, which is sequentially arranged with the SR primer 10 and the SR impermeable cover sheet layer 13 from bottom to top between the geomembrane 2 and the first anchoring structure 6, that is, after the geomembrane 2 is laid, the SR primer 10 and the SR impermeable cover sheet layer 13 are brushed, and then the first anchoring structure 6 is anchored. The SR impermeable cover sheet layer 13 extends to the reservoir bank slope section until the length of the SR impermeable cover sheet layer 13 covering the asphalt concrete panel 3 is not less than 20cm. The part of the SR impermeable cover sheet layer 13 located in the reservoir bank slope section is anchored by the second anchoring structure 7, and the covering part of the SR impermeable cover sheet layer 13 located on the top of the asphalt concrete panel 3 is pressed by the sand bag 17, which can reduce the risk of seepage channel at the lap joint part of the asphalt concrete panel 3 and the concrete. The use of the SR impermeable cover sheet layer 13 to extend and cover the joint between the asphalt concrete panel 3 and the concrete gallery 1 improves the reliability of the anchoring joint and ensures the safety of the entire impermeable body.

[0040] Further, the first anchoring structure 6 and the second anchoring structure 7 each include a stainless steel angle steel 15 and a stainless steel chemical bolt 14, the anchoring spacing of the first anchoring structure 6 is 30-45 cm, the anchoring spacing of the second anchoring structure 7 is 60-90 cm, the anchoring spacing of the second anchoring structure 7 can be appropriately increased, and the main role is to ensure that the SR impervious cover sheet 13 is kept stable on the slope section of the reservoir bank. The edges of the first anchoring structure 6 and the second anchoring structure 7 are each sealed with an elastic sealing agent 16.

[0041] The geomembrane 2 is anchored on the top of the concrete gallery 1 by the stainless steel chemical bolt 14 and the stainless steel angle steel 15, the bolt anchoring force can be uniformly transmitted to the angle steel by the characteristics of the large rigidity of the angle steel and the large anchoring force of the chemical bolt, the geomembrane 2 has good pressure covering, and the reliability of the connection between the geomembrane 2 and the concrete gallery 1 is ensured.

[0042] The above are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A connecting structure of a geomembrane and an asphalt concrete panel by a concrete gallery lap, characterized by, The application relates to a reservoir seepage prevention structure, which comprises the following components: a geomembrane (2) arranged at the bottom of a reservoir; an asphalt concrete panel (3) arranged at the slope section of the reservoir bank, the bottom of the asphalt concrete panel (3) being provided with an asphalt concrete panel sliding layer (8) for lapping; a concrete gallery (1) arranged at the joint of the bottom and the slope section of the reservoir bank, the top slope surface of the concrete gallery (1) being connected with the asphalt concrete panel sliding layer (8); a first anchoring structure (6) for anchoring the geomembrane (2) to the top of the concrete gallery (1); a first seepage prevention layer arranged between the base surface of the first anchoring structure (6) and the geomembrane (2), which is used for enhancing the seepage prevention capability of the first anchoring structure (6); a second seepage prevention layer arranged between the geomembrane (2) and the first anchoring structure (6), which extends to the side of the asphalt concrete panel (3) until covering the joint of the concrete gallery (1) and the asphalt concrete panel (3), and is used for enhancing the seepage prevention capability of the lapped part between the geomembrane (2) and the asphalt concrete panel (3).

2. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 1, characterized in that: The first seepage prevention layer comprises, from the base surface of the first anchoring structure (6) to the geomembrane (2) in sequence, an SR bottom adhesive (10), an SR sliding layer (11) and an SR seepage prevention adhesive strip (12).

3. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 2, characterized in that: Both the SR bottom adhesive (10) and the SR sliding layer (11) extend to the side of the slope section of the reservoir bank.

4. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 2, characterized in that: The SR bottom adhesive (10) is 10-15 cm wide, the SR sliding layer (11) is 6 mm thick, and the SR seepage prevention adhesive strip (12) is 6 mm thick.

5. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 1, characterized in that: The second seepage prevention layer comprises an SR seepage prevention cover sheet layer (13), which is arranged between the geomembrane (2) and the first anchoring structure (6) in sequence from bottom to top, and extends to the side of the slope section of the reservoir bank until the length of the SR seepage prevention cover sheet layer (13) covering the asphalt concrete panel (3) is not less than 20 cm.

6. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 5, characterized in that: The part of the SR seepage prevention cover sheet layer (13) located at the slope section of the reservoir bank is anchored by a second anchoring structure (7), and the covering part of the SR seepage prevention cover sheet layer (13) located at the top of the asphalt concrete panel (3) is covered by a sand bag (17).

7. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 6, characterized in that: Both the first anchoring structure (6) and the second anchoring structure (7) comprise stainless steel angle steel (15) and stainless steel chemical bolts (14), the anchoring interval of the first anchoring structure (6) is 30-45 cm, and the anchoring interval of the second anchoring structure (7) is 60-90 cm.

8. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 6, characterized in that: The edges of the first anchoring structure (6) and the second anchoring structure (7) are both sealed by an elastic sealing agent (16).

9. The connecting structure of the geomembrane and the asphalt concrete panel through the concrete gallery lap joint according to claim 1, characterized in that: The bottom of the geomembrane (2) is sequentially arranged from bottom to top with a lower cushion (5) and a three-dimensional composite drainage net (9), the bottom of the asphalt concrete panel (3) is arranged with a reservoir bank cushion material (4), the lower cushion (5) and the reservoir bank cushion material (4) are both arranged with a drainage pipe (18), the drainage pipe (18) opens into the inside of the passageway of the concrete gallery (1), and the drainage pipe (18) is used for collecting the catchment of the percolation of the geomembrane (2) to the lower cushion (5) and the percolation of the asphalt concrete panel (3) to the reservoir bank cushion material (4).

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