Flexible Anti-seepage barrier structure

Abstract

The present invention relates to the technical field of environmental treatment devices, and particularly relates to a flexible anti-seepage barrier structure, comprising: a first cushion layer which is laid on contaminated soil; a second cushion layer which is arranged on the first cushion layer; a frame component which is arranged on the first cushion layer and the second cushion layer, and is internally provided with an accommodating cavity; a third cushion layer which is arranged in the accommodating cavity; a pesticide injection component which is arranged in the third cushion layer; and a water injection component which is arranged on the frame component, wherein one end of the water injection component is connected to a water source end, and water outlet ends of the water injection component are separately arranged on the frame component. The first cushion layer, the second cushion layer and the third cushion layer are laid on the contaminated soil, the first cushion layer blocks the contaminated soil, the second cushion layer separates water and the soil, the third cushion layer provides planting spaces for normal plants, the pesticide injection component provides the third cushion layer with pesticide and fertilizer, a partition plate component divides the frame component into separate regions, thereby facilitating precise water injection by the water injection component, and locking components are provided at the bottom of the frame component, thereby improving the connection stability of the frame component.

Description

A flexible seepage-proof structure Technical Field

[0001] This invention belongs to the field of environmental treatment equipment technology, and in particular relates to a flexible seepage-proof structure. Background Technology

[0002] Soil remediation is a technical measure to restore contaminated soil to its normal function. In the soil remediation industry, there are over one hundred existing technologies, with more than ten commonly used. These can be broadly categorized into physical, chemical, and biological methods. Since the 1980s, many countries worldwide, especially developed countries, have formulated and implemented contaminated soil remediation plans, thus creating a burgeoning soil remediation industry. Contaminated soil contains various elements, particularly heavy metals like lead, making it extremely difficult for plants to survive. Traditional remediation methods use devices to restore the soil, facilitating plant growth. However, these devices have several drawbacks: firstly, most remediation devices rely on exogenous additives such as organic matter, zeolite, and phosphates. Additives are used to regulate and alter the physicochemical properties of heavy metals in soil, causing a series of reactions such as precipitation, adsorption, ion exchange, humification, and redox reactions. However, the addition of these additives is inconvenient, requiring manual burial using shovels and other methods, making it difficult to place them at equal intervals, which is very troublesome and compromises the remediation coverage. Secondly, it is inconvenient to quickly till and bury the materials after adding them, leaving them exposed and resulting in low efficiency in the remediation process. Thirdly, the soil to be remediated cannot be properly loosened after adding the additives, leading to slow adsorption or exchange of heavy metals and a lengthy remediation process.

[0003] Soil barrier remediation technology is currently a commonly used and widely applied technique for contaminated site treatment. Its technical principle is to lay a barrier layer to block the migration and diffusion of pollutants in the soil, isolating the contaminated soil from the surrounding environment and achieving the goal of contaminated land remediation. An in-situ soil barrier remediation system generally consists of a soil barrier system, a cover system, and a monitoring system. The soil barrier system mainly consists of impermeable barrier materials such as HDPE membranes and mud walls, constructing a barrier layer around the contaminated area to confine the contaminated area to a specific range. The soil cover system typically consists of one or more layers of isolation, such as clay layers and geomembranes. The monitoring system mainly consists of monitoring wells upstream and downstream of the barrier area. Currently, soil barrier remediation covers a large area of ​​contaminated soil, wasting a significant amount of land resources.

[0004] As disclosed in patent number 202020061541.6, an in-situ barrier and covering treatment device for contaminated soil and groundwater includes a contaminated soil layer and a covering treatment device disposed on the contaminated soil layer. A barrier layer is disposed between the covering treatment device and the contaminated soil layer. The covering treatment device includes an outer shell, a net is disposed on the bottom inner side of the outer shell, an impermeable membrane is disposed on the top surface of the net, a topsoil layer is disposed on the top surface of the impermeable membrane, a vegetation treatment layer is disposed on the topsoil layer, and a fertilization device is disposed within the topsoil layer. By using the outer shell and laying a barrier layer and an impermeable membrane at the bottom of the outer shell, it prevents harmful substances in the contaminated soil from migrating to the topsoil layer, allowing crops or plants to be planted on the topsoil layer for cultivation or greening of the contaminated soil. However, it has the following disadvantages: 1) poor connection stability between the outer shell and the soil; 2) inability to accurately inject water into the interior of the outer shell; 3) inability to perform zoned management. Summary of the Invention

[0005] The purpose of this invention is to provide a flexible seepage-proof structure to solve the technical problems in the prior art, such as poor connection stability of the barrier device, inability to perform regional management, and inability to adjust soil moisture according to actual conditions.

[0006] To solve the above-mentioned technical problems, the specific technical solution of the present invention is as follows:

[0007] In some embodiments of this application, a flexible seepage-proof structure is provided, comprising:

[0008] The first cushion layer is laid on the contaminated soil;

[0009] The second cushion layer is disposed on the first cushion layer and seals the first cushion layer;

[0010] A frame component is disposed on a first pad and a second pad, and is fixedly connected to the first pad and the second pad, and has an internal receiving cavity;

[0011] The third padding layer is disposed within the receiving cavity and is connected to the second padding layer;

[0012] The drug injection component is located within the third padding layer and is connected to an external drug source.

[0013] The water injection component is located on the frame component, with one end connected to the water source and the water outlet located on the frame component, inside the receiving cavity.

[0014] In some embodiments of this application, a locking component is also provided at the bottom of the frame component, and the locking component is fixedly connected to the frame component;

[0015] The locking components include:

[0016] The main body has a tapered bottom structure with a first sliding cavity inside and a first opening at the top of the first sliding cavity;

[0017] The second sliding cavity is arranged in a ring array on the main body, and a limiting cavity is provided at the connection between the second sliding cavity and the first sliding cavity.

[0018] A support component is disposed in the first sliding cavity and is fixedly connected to the main body, and has a first through hole at its center.

[0019] The first sliding member is disposed in the second sliding cavity, with one end extending into the first sliding cavity. It is slidably connected to the main body and is provided with a limiting member, which is located in the limiting cavity.

[0020] An elastic component is disposed within a limiting cavity, with one end connected to a limiting member and the other end connected to the inner wall of the limiting cavity;

[0021] The second sliding member is disposed in the first sliding cavity. One end of the second sliding member is a conical hammer structure, and the other end passes through the first through hole. It is slidably connected to the support member.

[0022] The bracket component is mounted on the support component and is rotatably connected to the support component. It has a third sliding cavity inside and a connecting hole at its top. The third sliding cavity is threadedly connected to the first sliding member.

[0023] In some embodiments of this application, the second sliding member is provided with limiting grooves arranged in a ring array, and a protrusion is provided at the first through hole, and the protrusion and the limiting groove are slidably connected.

[0024] In some embodiments of this application, the frame component is provided with several partition components, and the receiving cavity is divided into several planting cavities arranged in a matrix by the partition components. The drug outlet of the drug injection component is located in each planting cavity, and the water outlet of the water injection component is located on the side wall of each planting cavity.

[0025] In some embodiments of this application, the frame component is provided with a first slot, the first slots are arranged in an array on the frame component, and the partition component is fitted into the first slot.

[0026] In some embodiments of this application, the partition component is composed of multiple spacer members, and a second locking groove is provided on the spacer member, and two adjacent spacer members are fitted and connected through the second locking groove.

[0027] In some embodiments of this application, a connector is provided on one side of the frame component and a connecting groove is provided on the other side, so that adjacent frame components can be connected through the connector and the connecting groove.

[0028] In some embodiments of this application, a water level groove is provided on one side of the frame component, and a third sliding member is provided in the water level groove. One end of the third sliding member is slidably connected to the water level groove, and the other end is provided with a floating ball.

[0029] In some embodiments of this application, the first cushion layer is filled with clay, the thickness of which is 40-50 cm, and the permeability coefficient K of the clay is selected as 1×10⁻⁶. -7 cm / s-1×10 -6 cm / s.

[0030] In some embodiments of this application, the second cushion layer is a geomembrane with a thickness of 6-8 mm.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: by laying a first cushion layer, a second cushion layer and a third cushion layer on the contaminated soil, the first cushion layer isolates the contaminated soil, the second cushion layer separates water and soil, the third cushion layer provides planting space for normal plants, the injection component provides the third cushion layer with medicine and fertilizer, the partition component divides the frame component into areas to facilitate precise water injection, and the locking component at the bottom of the frame component improves the connection stability of the frame component. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 is a schematic diagram of the internal structure of the whole provided in an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of the overall internal structure of the locking component provided in an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of the internal structure of the locking component provided in an embodiment of the present invention;

[0036] Figure 4 is a magnified view of part A in Figure 3;

[0037] Figure 5 is a schematic diagram of the splicing frame component structure provided in an embodiment of the present invention;

[0038] Figure 6 is a schematic diagram of the internal structure of the frame component provided in an embodiment of the present invention.

[0039] First cushion layer 1, second cushion layer 2, frame component 3, connector 301, connecting groove 302, water level groove 303, third sliding component 304, third cushion layer 4, injection component 5, water injection component 6, locking component 7, main body 701, first sliding cavity 7011, second sliding cavity 7012, limiting cavity 7013, support component 702, first sliding component 703, limiting component 7031, elastic component 704, second sliding component 705, bracket component 706, third sliding cavity 7061, partition component 8, partition component 801. Detailed Implementation

[0040] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0041] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0042] Referring to Figure 1, some embodiments of this application include:

[0043] First cushion layer 1, laid on the contaminated soil; first cushion layer 1 may be filled with clay, the thickness of which is 40-50cm, and the permeability coefficient K of the clay is selected as 1×10. -7 cm / s-1×10 -6 cm / s;

[0044] The second cushion layer 2 is a barrier membrane, which is used to block the first cushion layer 1 so that moisture can only be transferred downwards and not in the opposite direction. The second cushion layer 2 is placed on the first cushion layer 1 and seals the first cushion layer 1.

[0045] The frame component 3 is a rectangular frame structure. It can be an integral rectangular frame or a rectangular frame composed of multiple plates. The frame component 3 is disposed on the first pad 1 and the second pad 2, and is fixedly connected to the first pad 1 and the second pad 2. It has an internal receiving cavity.

[0046] The third cushion layer 4 is a nutrient soil layer. The third cushion layer 4 is located in the receiving cavity and is connected to the second cushion layer 2. By placing the third cushion layer 4 inside the frame component 3, it is convenient to protect the soil in the third cushion layer 4 and prevent leakage. Furthermore, by planting plants on the third cushion layer 4, it is convenient to achieve greening.

[0047] The injection component 5 is a pipeline structure. The injection component 5 is located inside the third cushion layer 4 and is connected to the external drug source. In other words, the external fertilizer is injected into the third cushion layer 4 in liquid form through the injection pump connected to the injection component 5, so that the third cushion layer 4 maintains a certain fertility. Similarly, pH regulators can be injected through the injection pump to adjust the pH balance in the third cushion layer 4. In order to operate accurately in each area, several electromagnetic control valves are provided on the drug outlet of the injection component 5, and the electromagnetic control valves control the opening and closing of the corresponding drug outlet.

[0048] The water injection component 6 is a pipe structure. It is mounted on the frame component 3, with one end connected to the water source and the outlet end located on the frame component 3 inside the receiving cavity. It is connected to the drug injection component 5 via a water injection pump, allowing external water to enter the receiving cavity in liquid form to provide the water source for the third cushion layer 4. Correspondingly, in order to facilitate the change of different water volume requirements in each area, an electromagnetic control valve is provided on the outlet end of the water injection component 6 to control the opening and closing of the corresponding outlet end.

[0049] The technical effects achieved by the above technical solution in the embodiments of this application are as follows:

[0050] By laying a first cushion layer 1 on the contaminated soil to seal the contaminated soil, and laying a second cushion layer 2 to completely block the spread of pollutants, a planting area is constructed through a frame component 3, and a third cushion layer 4 is laid inside the frame component 3 to provide planting space for vegetation. By adding a drug injection component 5 and a water injection component 6 to maintain the pH and humidity balance of the third cushion layer 4, it is beneficial to the growth of vegetation. This provides a basis for improving the stability of the barrier device, regional management, and regulating soil moisture.

[0051] Referring to Figures 2-4, in some embodiments of this application, the technical solutions in the above embodiments are adopted, wherein the bottom of the frame component 3 is further provided with a locking component 7, and the locking component 7 and the frame component 3 are fixedly connected.

[0052] Locking component 7 includes:

[0053] The main body 701 is a columnar structure with a tapered bottom, and has a first sliding cavity 7011 inside, and a first opening at the top of the first sliding cavity 7011;

[0054] The second sliding cavity 7012 is arranged in a ring array on the main body 701. A limiting cavity 7013 is provided at the connection between the second sliding cavity 7011 and the first sliding cavity 7012. The second sliding cavity 7012 is arranged at an angle, and the two opposite second sliding cavities 7012 are arranged in a V-shape.

[0055] The support component 702 has a ring-shaped structure, which is used to provide support and limit. The support component 702 is disposed in the first sliding cavity 7011 and is fixedly connected to the main body 701. A first through hole is provided at its center.

[0056] The first sliding member 703 is a rod-shaped structure. The first sliding member 703 is disposed in the second sliding cavity 7012, and one end of it extends into the first sliding cavity 7011. It is slidably connected to the main body 701. A limiting member 7031 is provided on it. The limiting member 7031 is located in the limiting cavity 7013. The first sliding member 703 can slide in the second sliding cavity 7012 and then extend outward from the second sliding cavity 7012 to contact the soil. At the same time, the limiting member 7031 slides in the limiting cavity 7013.

[0057] The elastic component 704 is a spring. The elastic component 704 is disposed in the limiting cavity 7013. One end of the elastic component 704 is connected to the limiting member 7031, and the other end is connected to the inner wall of the limiting cavity 7013. When the limiting member 7031 moves in the limiting cavity 7013, the elastic component 704 deforms. When it is necessary to close, the first sliding member 703 is reset and slid in the second sliding cavity 7012 under the action of the elastic component 704.

[0058] The second sliding member 705 is a columnar structure. The second sliding member 705 is disposed in the first sliding cavity 7011. One end of it is a conical hammer structure, and the other end passes through the first through hole. It is slidably connected to the support member 702.

[0059] To prevent the second sliding member 705 from rotating within the first sliding cavity 7011, the second sliding member 705 is provided with a limiting groove arranged in a ring array, and a protrusion is provided at the first through hole. The protrusion and the limiting groove are slidably connected. The constraint between the protrusion and the limiting groove ensures that the second sliding member 705 can only move longitudinally on the support member 702.

[0060] The bracket component 706 is a columnar frame structure. The bracket component 706 is mounted on the support component 702 and is rotatably connected to the support component 702. It has a third sliding cavity 7061 inside and a connecting hole (the connecting hole is cross, straight, or star-shaped, etc.) on its top. The third sliding cavity 7061 is threadedly connected to the first sliding member 703.

[0061] It should be noted that the support component 702 divides the first sliding cavity 7011 into an upper cavity and a lower cavity. One end of the conical hammer of the first sliding member 703 is located in the lower cavity, and the other end passes through the support component 702 to the upper cavity. The height of the bracket component 706 is less than the height of the upper cavity, and the bracket component 706 can rotate in the upper cavity. During the rotation, the bottom of the bracket component 706 slides on the support component 702, and at the same time, the internal thread in the third sliding cavity 7061 inside it rotates synchronously.

[0062] Based on the above technical solutions, the technical solutions generated in the embodiments of this application are as follows:

[0063] In use, the starting component passes through the first opening and connects to the connection hole at the top of the support component 706. By rotating the starting component, the support component 706 rotates. At the same time, the first sliding component 703 moves longitudinally under the action of the internal thread of the third sliding cavity 7061 and under the constraint of the protrusion of the support component 702. This causes one end of the conical hammer of the first sliding component 703 to move upward, causing the second sliding component 705 to move outward. At the same time, the elastic component 704 deforms, and the second sliding component 705 unfolds to form a V-shaped rod structure, so as to form a larger foundation area with the soil, thereby improving the stability of the connection. When it is necessary to release, the starting component is rotated in the opposite direction, causing the first sliding component 703 to move downward. The second sliding component 705 is reset under the action of the elastic component 704. By adopting a mechanical structure, the operation is more convenient and the transmission efficiency is higher. By using the V-shaped second sliding component 705 to contact the soil, the connection stability of the frame component 3 is improved.

[0064] Referring to Figure 5, in some embodiments of this application, the technical solutions in the above embodiments are adopted, wherein the frame component 3 is provided with a plurality of partition components 8, and the accommodating cavity is divided into a plurality of planting cavities arranged in a matrix by the partition components 8, the drug outlet of the drug injection component 5 is located in each planting cavity, and the water outlet of the water injection component 6 is located on the side wall of each planting cavity.

[0065] A first slot is provided on the frame component 3. The first slots are arranged in an array on the frame component 3. The partition component 8 is fitted into the first slot. The partition component 8 is composed of multiple partitions. A second slot is provided on the partition. Two adjacent partitions are fitted and connected through the second slot.

[0066] It should be noted that the number of planting cavities inside the frame component 3 is related to the number of partition components 8 and their arrangement. Intersecting partition components 8 are connected by the second locking groove. In order to meet the water demand of plants in different planting cavities, the height of the corresponding partition component can be selected according to the water demand of the corresponding planting cavity, so as to form planting cavities of different heights to meet the water demand of various plants without affecting each other.

[0067] To prevent the exchange of water and fluid in different planting chambers, sealing elements are provided in the second locking groove between the partition members 801 and the first locking groove between the partition members and the frame member 3, so as to create different planting environments.

[0068] To further facilitate the adjustment of the planting area, different frame components 3 can be connected. A connector 301 (the connector 301 is a U-shaped rod or a pin structure) is provided on one side of the frame component 3, and a connecting groove 302 is provided on the other side. Adjacent frame components 3 can be connected through the connector 301 and the connecting groove 302. By connecting the connector 301 and the connecting groove 302, different frame components 3 can be connected into one.

[0069] The technical effects achieved by the above technical solution in the embodiments of this application are as follows:

[0070] By adopting a split frame component 3 and partition component 8, it is not only easy to transport, but also easier to assemble through the plug-in connection method. Furthermore, by using partitions of different heights, planting cavities of different heights can be formed to meet different planting needs. Through the plug-in connection of connector 301 and connecting groove 302, different frame components 3 can be integrated into one unit, thereby further improving the stability of the overall planting area.

[0071] Referring to Figure 6, in some embodiments of this application, the technical solutions described above are adopted. To adjust the water volume and pH level according to actual conditions, a water level trough 303 is provided on one side of the frame component 3, and a third sliding member 304 (a rod-shaped structure) is provided in the water level trough 303. One end of the third sliding member 304 is slidably connected to the water level trough 303, and the other end is equipped with a floating ball. Correspondingly, a distance detection sensor is provided at the top of the water level trough 303, and a pH detection sensor is provided in the third cushion layer 4. It should be noted that when there is no water on the surface of the third cushion layer 4, humidity detection sensors are scattered throughout the third cushion layer 4 to detect soil moisture. Indispensablely, a control system, such as a PLC processor, a control terminal processor, or a computer with a management APP installed, is also provided. The control system divides different pH standards, water level standards, and soil moisture standards for different planting areas. By receiving detection signals from water level, humidity, and pH sensors and comparing them with preset values, the control system adjusts the water level by activating the solenoid valves of the water injection component 6 and / or the drug injection component 5 in the corresponding planting chamber when the water level is below the preset value. When the water level is above the preset value, the control system activates the solenoid valves of the water injection component 6 and / or the drug injection component 5 in the corresponding planting chamber and activates a water pump connected to the water injection component 6 to pump water in reverse, thereby lowering the water level. However, it should be noted that when there is no water on the third layer 4, the humidity in the third layer 4 is too high. The control system should activate an early warning message and send it to the manager for handling. The handling method is as follows: spread sawdust, soil moisture retention agent, etc. on the third layer 4. When adjusting the pH, inject substances of different pH values ​​through the drug injection component 5 to adjust the soil and maintain the pH balance in the third layer 4.

[0072] The technical effects achieved by the above technical solution in the embodiments of this application are as follows:

[0073] By adding a water level trough 303 to the frame component 3 and moving the third sliding member 304 in the water level trough 303, the water level height is determined. The humidity and pH of the soil are detected by humidity and pH sensors. In conjunction with the control system, the water injection component 6 and the chemical injection component 5 are operated to adjust the humidity and pH, thereby maintaining the humidity and pH balance inside the third cushion layer 4 and achieving real-time adjustment.

[0074] In some embodiments of this application, the technical solutions described above are adopted. To further enhance the barrier effect on contaminated soil, the first cushion layer 1 can be clay or a mixture of clay and gravel / biochar / sepiolite powder / magnesite powder. To remediate the contaminated soil, a microbial passivation solution can be used for passivation treatment. When clay is used, the clay thickness is 40-50 cm, and the permeability coefficient K of the clay is selected as 1×10⁻⁶. -7 cm / s-1×10 -6 cm / s, when the first cushion layer 1 is biochar, such as corn stalks or bamboo charcoal, it is mixed with clay and used as the first cushion layer 1. After being laid on the contaminated soil, a mixture of potassium permanganate, lanthanum nitrate and samarium nitrate is sprayed on it, and then the second cushion layer 2 is laid after being compacted by a compaction device.

[0075] The second layer 2 is a geomembrane with a thickness of 6-8mm. The geomembrane is made of HDPE or polyethylene geomembrane. The geomembrane has excellent waterproof performance and excellent puncture resistance, which can resist most plant roots. This prevents the roots of crops planted in the upper topsoil from penetrating into the barrier layer and causing the clay in the barrier layer to damage the plants. In addition, laying the barrier membrane can also prevent water and nutrients in the topsoil from seeping into the lower barrier layer, thus preventing the topsoil from losing its water and fertilizer retention function.

[0076] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0077] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0078] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0079] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0080] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible impervious barrier structure, characterized in that, include: The first cushion layer is laid on the contaminated soil; The second cushion layer is disposed on the first cushion layer and seals the first cushion layer; A frame component is disposed on a first pad and a second pad, and is fixedly connected to the first pad and the second pad, and has an internal receiving cavity; The third padding layer is disposed within the receiving cavity and is connected to the second padding layer; The drug injection component is located within the third padding layer and is connected to an external drug source. The water injection component is located on the frame component, with one end connected to the water source and the water outlet located on the frame component, inside the receiving cavity.

2. A flexible impervious barrier according to claim 1, wherein The bottom of the frame component is also provided with a locking component, and the locking component is fixedly connected to the frame component. The locking components include: The main body has a tapered bottom structure with a first sliding cavity inside and a first opening at the top of the first sliding cavity; The second sliding cavity is arranged in a ring array on the main body, and a limiting cavity is provided at the connection between the second sliding cavity and the first sliding cavity. A support component is disposed in the first sliding cavity and is fixedly connected to the main body, and has a first through hole at its center. The first sliding member is disposed in the second sliding cavity, with one end extending into the first sliding cavity. It is slidably connected to the main body and is provided with a limiting member, which is located in the limiting cavity. An elastic component is disposed within a limiting cavity, with one end connected to a limiting member and the other end connected to the inner wall of the limiting cavity; The second sliding member is disposed in the first sliding cavity. One end of the second sliding member is a conical hammer structure, and the other end passes through the first through hole. It is slidably connected to the support member. The bracket component is mounted on the support component and is rotatably connected to the support component. It has a third sliding cavity inside and a connecting hole at its top. The third sliding cavity is threadedly connected to the first sliding member.

3. A flexible impervious barrier according to claim 2, wherein, The second sliding member is provided with a limiting groove arranged in a ring array, and a protrusion is provided at the first through hole. The protrusion and the limiting groove are slidably connected.

4. The flexible impervious barrier according to claim 1, wherein, The frame component has several partition components inside, which divide the accommodating cavity into several planting cavities arranged in a matrix. The drug outlet of the drug injection component is located in each planting cavity, and the water outlet of the water injection component is located on the side wall of each planting cavity.

5. A flexible impervious barrier according to claim 4, wherein The frame component is provided with a first slot, which is arranged in an array on the frame component, and the partition component is fitted into the first slot.

6. A flexible impervious barrier according to claim 5, wherein The partition component is composed of multiple spacer parts, and a second locking groove is provided on the spacer part. Two adjacent spacer parts are connected by fitting together through the second locking groove.

7. A flexible impervious barrier according to claim 5, wherein The frame component has a connector on one side and a connecting groove on the other side, and adjacent frame components are connected through the connector and the connecting groove.

8. A flexible impervious barrier according to claim 6, wherein The frame component has a water level groove on one side, and a third sliding member is provided in the water level groove. One end of the third sliding member is slidably connected to the water level groove, and the other end is provided with a floating ball.

9. The flexible impervious barrier according to claim 1, wherein, The first cushion layer is clay filling, the thickness of the clay is 40-50 cm, the permeability coefficient K of the clay is selected as 1 x 10 -7 cm / s-1 x 10 -6 cm / s.

10. The flexible impervious barrier according to claim 1, wherein, The second bedding layer is a geomembrane with a thickness of 6-8 mm.

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