River and lake gravity bentonite leaking stoppage and seepage prevention structure

Abstract

The utility model discloses a gravity bentonite leaking stoppage and seepage prevention structure for rivers and lakes, and relates to the technical field of non-drainage leaking stoppage and seepage prevention of rivers and lakes, in particular to a gravity leaking stoppage and seepage prevention structure adopting bentonite. The dynamic and still water surface gravity bentonite leaking stoppage anti-seepage sand layer counterweight structure sequentially comprises a lake bottom base layer, a gravity sand blanket anti-loss layer, a gravity bentonite leaking stoppage anti-seepage layer with the thickness of 50-100 mm, a gravity sand blanket protection layer and a river sand counterweight purification layer with the thickness larger than 100 mm from bottom to top. The static and dynamic water surface gravity bentonite leaking stoppage and seepage prevention aquatic plant soil layer balance weight structure sequentially comprises a river and lake bottom original base layer, a gravity sand blanket anti-loss layer, a gravity bentonite leaking stoppage and seepage prevention layer with the thickness of 50-100 mm, a gravity sand blanket protection layer and a balance weight aquatic plant soil layer with the thickness larger than 300 mm from bottom to top. According to the technical scheme, the problems that in the prior art, due to the fact that a water pumping construction mode is adopted, construction cost is increased, and destructive damage is caused to aquatic animals and plants are solved; and the problems of water quality damage, short anti-seepage service life, inconvenience in later maintenance and the like are caused by adopting coiled materials for seepage prevention and leakage stoppage.

Description

Technical Field

[0001] The utility model discloses a river and lake gravity bentonite leak-proof and anti-seepage structure, which relates to the technical field of leak-proof and anti-seepage for non-drained rivers and lakes, and in particular to a structure using bentonite gravity leak-proof and anti-seepage. Background Art

[0002] Leakage in rivers and lakes is a common occurrence in our daily lives, especially in man-made structures. To address this issue, the typical approach is to drain the water before proceeding with anti-seepage and leak-proofing. This approach typically uses various membranes, which not only fails to address the problem but also severely impacts water quality. The lifespan of anti-seepage measures is also a significant concern, as the current waterproofing market typically has a maximum aging index of 30 years, a significant mismatch with the lifespan of small or large-scale water conservancy projects. More importantly, pumping out the water before performing leak-proofing and leak-proofing not only increases investment significantly, but is also impossible for many projects involving deep or large water surfaces. Furthermore, draining the water can be devastating to aquatic life and significantly inconveniences subsequent maintenance.

[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to research and design a new type of river and lake gravity bentonite plugging and anti-seepage structure to overcome the problems existing in the prior art. Summary of the Invention

[0004] According to the above-mentioned existing technology, the method of pumping construction increases construction costs and causes devastating damage to aquatic plants and animals; the use of roll materials for anti-seepage and leak plugging has technical problems such as damaging water quality, short anti-seepage life, and inconvenience in later maintenance. A river and lake gravity bentonite leak plugging and anti-seepage structure is provided to solve the problems existing in the existing technology.

[0005] The technical means adopted by this utility model are as follows:

[0006] A river and lake gravity bentonite plugging and anti-seepage structure comprises: a dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure and a static and dynamic water surface gravity bentonite plugging and anti-seepage aquatic plant soil layer counterweight structure;

[0007] Furthermore, the weighted structure of the gravity bentonite plugging and anti-seepage sand layer on the dynamic and static water surfaces is, from bottom to top, as follows: lake bottom base layer, gravity sand blanket anti-loss layer, 50-100mm thick gravity bentonite plugging and anti-seepage layer, gravity sand blanket protective layer and >100mm thick river sand weight purification layer;

[0008] Furthermore, the weighted structures of the gravity bentonite plugging and anti-seepage aquatic plant soil layer on static and dynamic water surfaces are, from bottom to top, the original base layer of the river and lake bottom, the gravity sand blanket anti-loss layer, the 50-100mm thick gravity bentonite plugging and anti-seepage layer, the gravity sand blanket protective layer and the >300mm weighted aquatic plant soil layer.

[0009] Furthermore, the main body of the gravity sand blanket anti-loss layer is a gravity sand blanket; its structure includes: two layers of non-woven fabric and a fine sand weight layer in the middle, and the gravity sand blanket is made according to the processing method of bentonite blanket;

[0010] Furthermore, the non-woven fabric layer is made of non-woven fabric with water permeability;

[0011] Furthermore, the material of the fine sand weight layer is fine sand;

[0012] Furthermore, the thickness of the fine sand weight layer is greater than 8 mm.

[0013] Furthermore, the material of the 50-100 mm thick gravity bentonite plugging and anti-seepage layer is modified gravity sodium-based bentonite;

[0014] Furthermore, the specific gravity of the modified gravity sodium bentonite is greater than 1.2;

[0015] Furthermore, the anti-seepage coefficient of the modified gravity sodium-based bentonite is 5x10-11cm / s.

[0016] Furthermore, the structure of the gravity sand blanket protection layer is the same as that of the gravity sand blanket anti-loss layer, but the laying positions are different and the functions they play are different.

[0017] Furthermore, the >100mm thick river sand counterweight purification layer mainly refers to the thickness of the river sand, which is set by the counterweight. It is obtained according to the maximum water level pressure difference on both sides of the water area for many years X the safety factor. The construction method adopts one of the forms of water surface pipeline transportation and paving, and ton bag hanging and releasing paving according to the actual situation.

[0018] Furthermore, the counterweight in the >300mm counterweight aquatic plant soil layer mainly refers to the thickness of the soil set for the counterweight, and its thickness is obtained according to the long-term highest water level pressure difference on both sides of the water area X safety factor; the aquatic plant soil layer means the soil layer that needs to grow aquatic plants according to actual needs.

[0019] A construction method for a gravity bentonite leak-proof and anti-seepage structure for rivers and lakes includes: a construction method for a gravity bentonite leak-proof and anti-seepage sand layer counterweight structure for dynamic and static water surfaces; and a construction method for a gravity bentonite leak-proof and anti-seepage aquatic plant soil layer counterweight structure for static and dynamic water surfaces.

[0020] Furthermore, the construction method of the dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure includes the following steps:

[0021] A1. Lake bottom base construction: The lake bottom base is the intersection of the lake bed and the water. The lake bottom construction area should be designed according to the seepage geology, and loose objects protruding from the lake bottom should be removed before construction.

[0022] A2. Gravity Sand Blanket Anti-loss Layer Construction: This layer is used as a counterweight to prevent loss of the anti-seepage layer. The construction method is to follow the surface defense line - horizontal traction control - underwater camera observation and control - horizontal overlapping and sinking - gravity bentonite anti-seepage material is laid underwater at the corresponding overlapping distance requirements.

[0023] A3. Construction of 50-100mm thick gravity bentonite plugging and anti-seepage layer: The construction method is underwater camera observation and control - paving of gravity bentonite; the paving method of gravity bentonite is to use surface mechanical pipeline transportation and paving or tote bag hanging and dropping to spread gravity bentonite;

[0024] A4. Construction of Gravity Sand Blanket Protective Layer: This layer is used to protect the anti-seepage layer. The construction method is based on the water surface defense line - horizontal traction control - horizontal overlapping and sinking - underwater camera observation and control - river sand materials are piled up according to the corresponding requirements to fix the gravity sand blanket protective layer;

[0025] A5. Construction of river sand weight purification layer with thickness of >100mm: This layer is intended to protect the gravity bentonite anti-seepage layer and purify water; the construction method is underwater camera observation and control - gravity bentonite paving; the bentonite paving method is a method of using surface mechanical pipeline transportation for paving or ton bag lifting and sinking to release river sand for paving.

[0026] Furthermore, the construction method of the static and dynamic water surface gravity bentonite leak plugging and anti-seepage aquatic plant soil layer counterweight structure includes the following steps:

[0027] B1. Construction of the original base layer of rivers and lakes: The original base layer of rivers and lakes refers to the intersection of the riverbed and lakebed with the water. The lakebed construction area should be designed based on the seepage geology, and loose materials protruding from the lakebed should be removed before construction.

[0028] B2. Gravity Sand Blanket Anti-loss Layer Construction: This layer is used as a counterweight to prevent loss of the anti-seepage layer. The construction method is to follow the water surface defense line - horizontal traction control - underwater camera observation and control - horizontal overlapping and sinking - gravity bentonite anti-seepage material is laid underwater at corresponding overlapping distances.

[0029] B3. Construction of 50-100mm thick gravity bentonite plugging and anti-seepage layer: The construction method is underwater camera observation and control - paving of gravity bentonite; the paving method of gravity bentonite is to use surface mechanical pipeline transportation or ton bag hanging and dropping to spread the gravity bentonite;

[0030] B4. Gravity Sand Blanket Protection Layer Construction: This layer is used to protect the anti-seepage layer. The construction method is based on the water surface defense line - horizontal traction control - horizontal overlapping and sinking - underwater camera observation and control - river sand materials are piled up according to the corresponding requirements to fix the gravity sand blanket protection layer;

[0031] B5, Construction of counterweight aquatic plant soil layer >300mm: Use underwater camera for observation and control - ton bags are sunk and laid.

[0032] Furthermore, the water surface defense line is to master the construction position of gravity blanket, bentonite anti-seepage layer and counterweight layer, and accurately grasp the connection position and direction of each layer.

[0033] Furthermore, horizontal traction means that the gravity blanket must be horizontally overlapped and sunk within the specified water surface range. Horizontal overlap and sinking require pulling and stretching the blanket from the four corners of the water surface to sink it underwater.

[0034] Furthermore, horizontal overlapping and laying refers to laying the gravity sand blanket flat on the water surface and allowing it to sink to the bottom of the water in a horizontal posture and be laid at a designated position;

[0035] Furthermore, underwater camera observation and control refers to the use of underwater cameras to observe the underwater laying conditions and control the laying position of the gravity sand blanket;

[0036] Furthermore, ton bag lifting and spreading refers to loading bentonite into ton bags, lifting and sinking the entire bag to a designated location, and then opening the ton bags to spread the bentonite to the designated location.

[0037] Compared with the prior art, the utility model has the following advantages:

[0038] 1. The river and lake gravity bentonite plugging and anti-seepage structure provided by this utility model is very suitable for outdoor underwater anti-seepage and plugging projects of any original size. It is not restricted by water depth and shallowness, and does not require the use of the construction procedure of pumping and draining first, and does not affect any normal use function of the water surface.

[0039] 2. The river and lake gravity bentonite plugging and anti-seepage structure provided by this utility model is a natural inorganic material that is corrosion-resistant, non-aging, colorless, non-toxic, and non-polluting. It does not harm any plants or organisms in the water, and its waterproof life can reach more than a thousand years. At the same time, it is very convenient for later maintenance within the water area.

[0040] 3. The river and lake gravity bentonite plugging and anti-seepage structure provided by this utility model can be freely developed according to the actual construction conditions of the project and modern equipment; it has the characteristics of simple process, high construction efficiency and cost adaptability.

[0041] 4. The river and lake gravity bentonite plugging and anti-seepage structure provided by the utility model is suitable for underwater anti-seepage and plugging technology of various underwater submerged pipe channel projects.

[0042] In summary, the technical solution of the present invention solves the problems in the existing technology of using drainage and pumping construction methods, which increase construction costs and cause devastating damage to aquatic plants and animals; the use of roll materials for anti-seepage and leakage plugging damages water quality, and has a short anti-seepage life and inconvenience in later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0044] Figure 1 This is a schematic diagram of the counterweight structure of the dynamic and static water surface gravity bentonite leak plugging and anti-seepage sand layer of the utility model;

[0045] Figure 2 This is a schematic diagram of the utility model's static and dynamic water surface gravity bentonite leak plugging and anti-seepage aquatic plant soil layer counterweight structure;

[0046] Figure 3 This is a schematic diagram of the structure of the gravity sand blanket anti-loss layer of the utility model.

[0047] In the figure: 1. Lake bottom base layer 2. Gravity sand blanket anti-loss layer 21. Non-woven fabric layer 22. Fine sand weight layer 3. 50-100mm thick gravity bentonite plugging and anti-seepage layer 4. Gravity sand blanket protective layer 5.

[0048] 100mm thick river sand weighted purification layer 6, >300mm weighted aquatic plant soil layer 7, water 8, original base layer of river and lake bottom. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technology, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0053] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0056] Example 1

[0057] like Figure 1 As shown, the utility model provides a river and lake gravity bentonite plugging and anti-seepage structure using a dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure; the dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure is, from bottom to top, a lake bottom base layer 1, a gravity sand blanket anti-loss layer 2, a 50-100mm thick gravity bentonite plugging and anti-seepage layer 3, a gravity sand blanket protective layer 4, and a >100mm thick river sand counterweight purification layer 5;

[0058] like Figure 3 As shown, the main body of the gravity sand blanket anti-loss layer 2 is a gravity sand blanket; its structure includes: two upper and lower non-woven fabric layers 21 and a fine sand counterweight layer 22 in the middle, and the gravity sand blanket is made according to the processing method of the bentonite blanket; the non-woven fabric layer 21 is made of non-woven fabric with water permeability; the material of the fine sand counterweight layer 22 is fine sand; the thickness of the fine sand counterweight layer 22 is greater than 8mm.

[0059] The material of the 50-100 mm thick gravity bentonite plugging and anti-seepage layer 3 is modified gravity sodium-based bentonite; the specific gravity of the modified gravity sodium-based bentonite is greater than 1.2; and the anti-seepage coefficient of the modified gravity sodium-based bentonite is 5x10-11 cm / s.

[0060] The structure of the gravity sand blanket protection layer 4 is the same as that of the gravity sand blanket anti-loss layer 2, but the laying position is different and the functions are different.

[0061] The thickness of the 100mm thick river sand weight purification layer 5 needs to be calculated based on the maximum water level pressure difference on both sides of the water area for many years × the safety factor. Depending on the actual situation, one of the following methods can be used for construction: pipeline transportation and paving, ton bag hanging and sinking and paving.

[0062] The construction method of the dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure includes the following steps:

[0063] A1. Construction of Lake Bottom Base 1: Lake bottom base 1 is the intersection of the lake bed and the water. The lake bottom construction area should be designed based on the seepage geology, and loose objects protruding from the lake bottom should be removed before construction.

[0064] A2. Construction of Gravity Sand Blanket Anti-loss Layer 2: This layer is used as a counterweight to prevent loss of the anti-seepage layer. The construction method is to follow the surface defense line - horizontal traction control - underwater camera observation and control - horizontal overlapping and sinking - gravity bentonite anti-seepage material is laid underwater at the corresponding overlapping distance requirements.

[0065] A3. Construction of 50-100mm thick gravity bentonite plugging and anti-seepage layer 3: The construction method is underwater camera observation and control - paving of gravity bentonite; the paving method of gravity bentonite is to use surface mechanical pipeline transportation or ton bag hanging and dropping to spread the gravity bentonite;

[0066] A4. Construction of Gravity Sand Blanket Protective Layer 4: This layer serves as a protective anti-seepage layer. The construction method involves following the surface defense line – horizontal traction control – horizontal overlapping and sinking – underwater camera observation and control – and piling river sand materials to form a fixed protective layer of gravity sand blanket according to requirements.

[0067] A5. Construction of river sand weight purification layer 5 with thickness of >100mm: This layer is intended to protect the gravity bentonite anti-seepage layer and purify the water; the construction method is to use a water surface mechanical pipeline to transport and spread the river sand or to use ton bags to sink and release the river sand for spreading.

[0068] The water surface defense line is to master the construction position of gravity blanket, bentonite anti-seepage layer and counterweight layer, and accurately grasp the connection position direction of each layer.

[0069] The horizontal traction control means that the gravity blanket must be horizontally overlapped and sunk within the specified water surface range. The horizontal overlap sinking needs to be stretched out from the four corners of the water surface and sunk underwater.

[0070] The horizontal overlapping and laying refers to laying the gravity sand blanket flat on the water surface and letting it sink to the bottom of the water in a horizontal posture and laid at a designated position;

[0071] The underwater camera observation and control refers to the use of underwater cameras to observe the underwater laying conditions and control the laying position of the gravity sand blanket;

[0072] The ton bag lifting and spreading refers to loading bentonite into ton bags, lifting and sinking the entire bag into a designated location, and then opening the ton bags to spread the bentonite to the designated location.

[0073] Example 2

[0074] like Figure 2 As shown, (on the basis of Example 1,) the utility model also provides a river and lake gravity bentonite plugging and anti-seepage structure using a static and dynamic water surface gravity bentonite plugging and anti-seepage aquatic plant soil layer counterweight structure; the static and dynamic water surface gravity bentonite plugging and anti-seepage aquatic plant soil layer counterweight structure is from bottom to top: the original base layer 8 of the river and lake bottom, the gravity sand blanket anti-loss layer 2, the 50-100mm thick gravity bentonite plugging and anti-seepage layer 3, the gravity sand blanket protective layer 4 and the >300mm counterweight aquatic plant soil layer 6.

[0075] like Figure 3 As shown, the main body of the gravity sand blanket anti-loss layer 2 is a gravity sand blanket; its structure includes: two upper and lower non-woven fabric layers 21 and a fine sand counterweight layer 22 in the middle, and the gravity sand blanket is made according to the processing method of the bentonite blanket; the non-woven fabric layer 21 is made of non-woven fabric with water permeability; the material of the fine sand counterweight layer 22 is fine sand; the thickness of the fine sand counterweight layer 22 is greater than 8mm.

[0076] The material of the 50-100 mm thick gravity bentonite plugging and anti-seepage layer 3 is modified gravity sodium-based bentonite; the specific gravity of the modified gravity sodium-based bentonite is greater than 1.2; and the anti-seepage coefficient of the modified gravity sodium-based bentonite is 5x10-11 cm / s.

[0077] The structure of the gravity sand blanket protection layer 4 is the same as that of the gravity sand blanket anti-loss layer 2, but the laying position is different and the functions are different.

[0078] The counterweight in the >300mm counterweight aquatic plant soil layer 6 mainly refers to the thickness of the soil set for the counterweight, which is obtained based on the long-term maximum water level pressure difference on both sides of the water area × the safety factor; the aquatic plant soil layer means the soil layer that needs to grow aquatic plants according to actual needs.

[0079] The construction method of the static and dynamic water surface gravity bentonite leak plugging and anti-seepage aquatic plant soil layer counterweight structure includes the following steps:

[0080] B1. Construction of the original base layer 8 of the river and lake bottom: The original base layer 8 of the river and lake bottom refers to the intersection of the riverbed, lakebed and water. The lake bottom construction area should be designed according to the seepage geology, and loose materials protruding from the lake bottom surface should be removed before construction.

[0081] B2. Construction of Gravity Sand Blanket Anti-loss Layer 2: This layer is used as a counterweight to prevent loss of the anti-seepage layer. The construction method is to follow the water surface defense line - horizontal traction control - underwater camera observation and control - horizontal overlapping and sinking - gravity bentonite anti-seepage material is laid underwater at corresponding overlapping distances.

[0082] B3. Construction of 50-100mm thick gravity bentonite plugging and anti-seepage layer 3: The construction method is underwater camera observation and control - paving of gravity bentonite; the paving method of gravity bentonite is to use surface mechanical pipeline transportation or ton bag hanging and dropping to spread the gravity bentonite;

[0083] B4. Construction of Gravity Sand Blanket Protective Layer 4: This layer is used to protect the anti-seepage layer. The construction method is based on the water surface defense line - horizontal traction control - horizontal overlapping and sinking - underwater camera observation and control - river sand materials are piled up according to the corresponding requirements to fix the protective layer of gravity sand blanket;

[0084] B5, >300mm counterweight aquatic plant soil layer 6 construction: use underwater camera for observation and control - ton bags are lowered and laid.

[0085] The water surface defense line is to master the construction position of gravity blanket, bentonite anti-seepage layer and counterweight layer, and accurately grasp the connection position and direction of each layer

[0086] The horizontal traction control means that the gravity blanket must be horizontally overlapped and sunk within the specified water surface range. The horizontal overlap sinking needs to be stretched out from the four corners of the water surface and sunk underwater.

[0087] The horizontal overlapping and laying refers to laying the gravity sand blanket flat on the water surface and letting it sink to the bottom of the water in a horizontal posture and laid at a designated position;

[0088] The underwater camera observation and control refers to the use of underwater cameras to observe the underwater laying conditions and control the laying position of the gravity sand blanket;

[0089] The ton bag lifting and spreading refers to loading bentonite into ton bags, lifting and sinking the entire bag into a designated location, and then opening the ton bags to spread the bentonite to the designated location.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A river and lake gravity bentonite plugging and anti-seepage structure, characterized by: The river and lake gravity bentonite plugging and anti-seepage structure includes: a dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer counterweight structure and a static and dynamic water surface gravity bentonite plugging and anti-seepage aquatic plant soil layer counterweight structure; The dynamic and static water surface gravity bentonite plugging and anti-seepage sand layer weight structure is sequentially composed from bottom to top: lake bottom base (1), gravity sand blanket anti-loss layer (2), 50-100mm thick gravity bentonite plugging and anti-seepage layer (3), gravity sand blanket protective layer (4) and >100mm thick river sand weight purification layer (5); The static and dynamic water surface gravity bentonite plugging and anti-seepage aquatic plant soil layer counterweight structure is, from bottom to top, the original base layer of the river and lake bottom (8), the gravity sand blanket anti-loss layer (2), the 50-100 mm thick gravity bentonite plugging and anti-seepage layer (3), the gravity sand blanket protective layer (4) and the >300 mm counterweight aquatic plant soil layer (6).

2. The river and lake gravity bentonite leak-proof and anti-seepage structure according to claim 1, characterized in that: The main body of the gravity sand blanket anti-loss layer (2) is a gravity sand blanket; Its structure includes: two upper and lower non-woven fabric layers (21) and a fine sand weight layer (22) in the middle, and is made into a gravity sand blanket in the same way as a bentonite blanket; The non-woven fabric layer (21) is made of non-woven fabric with water permeability; The material of the fine sand counterweight layer (22) is fine sand; The thickness of the fine sand weight layer (22) is greater than 8 mm.

3. The river and lake gravity bentonite leak-proof and anti-seepage structure according to claim 1, characterized in that: The material of the 50-100 mm thick gravity bentonite plugging and anti-seepage layer (3) is modified gravity sodium-based bentonite; The specific gravity of the modified gravity sodium bentonite is greater than 1.2; The anti-seepage coefficient of the modified gravity sodium-based bentonite is 5x10-11cm / s.

4. The river and lake gravity bentonite leak-proof and anti-seepage structure according to claim 1, characterized in that: The structure of the gravity sand blanket protective layer (4) is the same as that of the gravity sand blanket anti-loss layer (2).

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