An ecological restoration device for preventing sediment from entering inland rivers and lakes by tidal currents and its application

Abstract

The present invention provides a tidal wave intrusion prevention and sediment control ecological restoration device for inland rivers and lakes and its application. The ecological restoration device includes a rubber dam and a net cage structure, and the net cage structure is located above the rubber dam. The net cage structure includes a motor, a shaft rod, two iron chains, a roller, a stepped grid frame and several net cages. The shaft rod is connected to the output shaft of the motor. The roller is located on the side of the shaft rod facing the sea. The stepped grid frame is arranged facing the sea. The two iron chains are arranged in parallel on both sides of the stepped grid frame, and the corresponding ends of the two iron chains are respectively fixedly connected to both sides of the bottom row of grids of the stepped grid frame, and the corresponding other ends are respectively fixedly connected to the shaft rod. At the same time, the two iron chains are abutted against the roller and are in rolling connection with the roller. Several net cages are arranged in the grids of the stepped grid frame. The motor is fixed to the shore, and the roller is in rolling connection with the shore. A fixed biofilm carrier is arranged in the net cage. The ecological net cages of the ecological restoration device can be replaced regularly, and can well complete the ecological restoration of the water body.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological restoration, and particularly relates to an ecological restoration device for preventing sediment in inland rivers and lakes from the sea tide and its application. Background Art

[0002] A rubber sluice, a barrage, a rubber dam or a rubber water dam is a bag-shaped water retaining dam formed by using a high-strength synthetic fiber fabric as a stress-bearing skeleton, coating rubber inside and outside as a protective layer, processing it into a rubber cloth, and then anchoring it on the bottom plate to form a closed dam bag, and inflating it with water (gas) through a filling and discharging pipeline. The top of the dam can overflow, and the dam height can be adjusted according to needs to control the upstream water level so as to play the benefits of irrigation, power generation, shipping, flood control, tide prevention, etc.

[0003] The rubber dam belongs to a thin-walled flexible structure and is a new type of hydraulic structure that emerged with the development of polymer synthetic materials.

[0004] However, for the existing tide-proof rubber dam, because the overflow water during high tide carries sediment, garbage or other contaminants, if it enters the inland lake, it will affect the water quality and ecological environment of the inland lake. Summary of the Invention

[0005] Technical problems to be solved: Aiming at the shortcomings of the existing technology, the present invention provides an ecological restoration device for preventing sediment in inland rivers and lakes from the sea tide and its application. The ecological restoration device builds a rubber dam at the junction of the sea water and the inland river or lake, and places a stepped grid frame that can be raised or lowered at its sea inlet end. An ecological net cage containing an immobilized biofilm carrier is built inside, and the ecological net cage can be replaced regularly, which can well complete the ecological restoration of the water body.

[0006] Technical solution: An ecological restoration device for preventing sediment in inland rivers and lakes from the sea tide. The ecological restoration device is arranged at the junction of the sea water and the inland river or lake, and includes a rubber dam and a net cage structure. The net cage structure is parallel to the length direction of the rubber dam and the net cage structure is located above the rubber dam; the net cage structure includes a motor, a shaft rod, two iron chains, a roller, a stepped grid frame and several net cages. The shaft rod is connected to the output shaft of the motor and is located directly above the rubber dam. The roller is located on the side of the shaft rod facing the sea and the horizontal height of the roller is not lower than that of the shaft rod. The stepped grid frame faces the sea and is located between the shaft rod and the rubber dam. Two iron chains are arranged in parallel on both sides of the stepped grid frame, and the corresponding ends of the two iron chains are respectively fixedly connected to both sides of the bottom row of grids of the stepped grid frame, and the corresponding other ends of the two iron chains are respectively fixedly connected to the shaft rod. At the same time, the two iron chains are abutted against the roller and are in rolling connection with the roller. Several net cages are arranged in the grids of the stepped grid frame. The motor is fixed to the shore, and the roller is in rolling connection with the shore; an immobilized biofilm carrier is arranged in the net cage.

[0007] The rubber dam described above is a liquid dam or an air shield dam.

[0008] When the bottom end of the stepped grid frame described above is flush with the bottom end of the rubber dam filled with water or gas, the top row of grids of the stepped grid frame is located between the shaft rod and the rubber dam.

[0009] The immobilized biofilm carrier in the above-mentioned net cage is oyster shell, ceramsite or polyurethane film-hanging filler.

[0010] Application of the above-mentioned ecological restoration device for preventing sediment in the process of tide entering inland rivers and lakes and carrying out ecological restoration.

[0011] Application of an ecological restoration device for preventing sediment in tide entering inland rivers and lakes is as follows:

[0012] 1) When the tide is rising, fill the rubber dam with gas or water. The bottom end of the stepped grid frame contacts the water bottom. When seawater flows into the inland river or lake, it passes through the stepped grid frame and the upper end of the rubber dam in turn. The immobilized biofilm carrier in the net cage contacts the water body to form a highly efficient biofilm, completing the degradation of organic matter pollutants in the water body, and the rubber dam completes the blocking of sediment in the water body;

[0013] 2) During the flood season or ebb tide period, evacuate the rubber dam and start the motor. The shaft rod rotates accordingly, driving the rotation of 2 iron chains. While the iron chains are wound around the shaft rod, the stepped grid frame is lifted accordingly. At this time, the rubber dam lies flat on the water bottom, allowing the water in the inland river or lake to carry sediment and flow into the sea;

[0014] 3) When the tide rises again, fill the rubber dam with gas or water, and start the motor to reverse the rotation direction of the shaft rod relative to that in step 2). The iron chains lower the stepped grid frame along the roller, making the bottom end of the stepped grid frame contact the water bottom, and carrying out a new round of ecological restoration of the water body.

[0015] Beneficial effects: An ecological restoration device for preventing sediment in tide entering inland rivers and lakes and its application provided by the present invention have the following beneficial effects:

[0016] 1. This ecological restoration device has the advantages of being able to lift and lower freely, low construction cost, short construction period, strong functionality, etc., and can optimize the urban ecological livable environment and provide green kinetic energy for the sustainable development of the city.

[0017] 2. This ecological restoration device is set at the junction of seawater and inland rivers and lakes. A stepped grid frame that can be raised or lowered is placed at its sea inlet end, and an independent ecological net cage containing an immobilized biofilm carrier is built inside. The ecological net cage can be replaced regularly, and can well complete the ecological restoration of the water body.

[0018] 3. The ecological net cage set in this ecological restoration device has good hydrophobicity of the immobilized biofilm carrier in the ecological net cage. It contacts the water body to form a highly efficient biofilm, and can effectively degrade organic matter pollutants in the water body.

[0019] 4. During the flood season or ebb tide period, the stepped grid structure is lifted, and the water or gas in the rubber dam is evacuated, causing the rubber dam to lie flat on the bottom of the inner river or lake, so that the water in the inner river can carry sediment and flow out to the open sea smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural view of the ecological restoration device of the present invention.

[0021] In the figure: 1. Rubber dam; 2. Cage structure; 21. Motor; 22. Shaft rod; 23. Iron chain; 24. Roller; 25. Stepped grid frame; 251. Grid; 26. Cage. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, contents and advantages of the present invention clearer, the present invention will be further described below with reference to the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art's various equivalent modifications of the present invention all fall within the scope defined by the appended claims of this application.

[0023] This embodiment provides a tidal wave intrusion into the inner river or lake anti-sediment ecological restoration device. The ecological restoration device is arranged at the junction of the sea water and the inner river or lake, and includes a rubber dam 1 and a cage structure 2. The cage structure 2 is parallel to the length direction of the rubber dam 1 and the cage structure 2 is located above the rubber dam 1; the cage structure 2 includes a motor 21, a shaft rod 22, two iron chains 23, a roller 24, a stepped grid frame 25 and several cages 26. The shaft rod 22 is connected to the output shaft of the motor 21 and is located directly above the rubber dam 1. The roller 24 is located on the side of the shaft rod 22 facing the sea and the horizontal height of the roller 24 is not lower than that of the shaft rod 22. The stepped grid frame 25 faces the sea and is located between the shaft rod 22 and the rubber dam 1. The two iron chains 23 are arranged in parallel on both sides of the stepped grid frame 25, and the corresponding ends thereof are respectively fixedly connected to both sides of the bottom row grid of the stepped grid frame 25, and the corresponding other ends are respectively fixedly connected to the shaft rod 22. At the same time, the two iron chains 23 are abutted against the roller 24 and are in rolling connection with the roller 24. Several cages 26 are arranged in the grids 251 of the stepped grid frame 25. The motor 21 is fixed to the shore, and the roller 24 is in rolling connection with the shore; a fixed biofilm carrier is arranged in the cage 26.

[0024] Preferably, the rubber dam 1 is a liquid dam or an air shield dam. In the present invention, the type selection of the rubber dam 1 is not limited and can be selected according to the actual situation. If necessary according to the actual situation, the rubber dam 1 can also be replaced with a steel gate.

[0025] Preferably, when the bottom end of the stepped grid frame 25 is flush with the bottom end of the rubber dam 1 filled with water or gas, the top row of grids of the stepped grid frame 25 is located between the shaft rod 22 and the rubber dam 1. This setting can comprehensively and effectively degrade the organic pollutants in the seawater body flowing into the inland river or lake.

[0026] Preferably, the immobilized biofilm carriers in the net cage are oyster shells, ceramsite or polyurethane film-hanging fillers. These carriers can all come into contact with the water body to form an efficient biofilm and effectively degrade the organic pollutants in the water body.

[0027] Preferably, the number of rows of the stepped grid frame 25 and the number of each row are set according to actual needs, mainly determined by the water depth of the river course and the width of the river surface.

[0028] Preferably, the net cages 26 are also arranged at intervals in each row or arranged in sequence according to actual needs. The density of the net cages should be such that the water permeability is good and the immobilized biofilm carriers are ensured not to break away from the net cages.

[0029] Preferably, the roller 24 can be a hollow tube to save costs.

[0030] The application of an ecological restoration device for preventing sediment when the sea tide flows into an inland river or lake is as follows:

[0031] 1) When the tide is rising, fill the rubber dam 1 with gas or water. The bottom end of the stepped grid frame 25 contacts the water bottom. When the seawater flows into the inland river or lake, it passes through the stepped grid frame 25 and the upper end of the rubber dam 1 in sequence. The immobilized biofilm carriers in the net cage 26 come into contact with the water body to form an efficient biofilm, completing the degradation of the organic pollutants in the water body, and the rubber dam 1 completes the blocking of the sediment in the water body;

[0032] 2) During the flood season or the ebb tide period, evacuate the rubber dam 1 and turn on the motor 21. The shaft rod 22 rotates accordingly, driving the two iron chains 23 to rotate. While the iron chains 23 are wound around the shaft rod 22, the stepped grid frame 25 is lifted accordingly. At this time, the rubber dam 1 lies flat on the water bottom, allowing the water in the inland river or lake to carry sediment and flow into the sea;

[0033] 3) When the tide is rising again, fill the rubber dam 1 with gas or water, and turn on the motor 21 to reverse the rotation direction of the shaft rod 22 relative to that in step 2. The iron chains 23 lower the stepped grid frame 25 along the roller 24, making the bottom end of the stepped grid frame 25 contact the water bottom to carry out a new round of ecological restoration of the water body.

[0034] Regarding the selection of the rubber dam: For the spoiler dam, due to the variable states of seawater, flow rate and velocity, and reasons such as the overflow flow rate of the dam, the rubber dam may have an overall vibration situation, and then the spoiler plate needs to be used to solve it. When the water overflows the dam, the spoiler plate infiltrates air downward under the dam, reducing the negative pressure downstream of the dam, thereby reducing the vibration of the rubber dam bladder and keeping the dam bag stable.

[0035] The construction process of the rubber dam mainly involves two aspects: one is civil engineering; the other is the customization of the rubber dam bag. (1) Civil engineering. Civil engineers ensure the preconditions for the construction of the rubber dam. The projects involved in civil engineering mainly include excavating the foundation pit and burying relevant control and observation pipelines. (2) Customization of the dam bag. For the customization of the dam bag, several manufacturers should be consulted, and their performance and reputation should be carefully analyzed to ensure the quality of the dam bag. It is necessary to focus on checking whether they have the product quality certificate issued by the state and the quality inspection report of the dam bag. Before production, the dam bag and its bottom gasket should be strictly manufactured according to the design drawings. After leaving the factory, it is necessary to strictly check whether the size and other information are consistent.

[0036] The above embodiments have described the implementation manners of the present invention in detail. However, the present invention is not limited to the above implementation manners. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention. The above are only the preferred and feasible embodiments of the present invention, and thus do not limit the scope of the rights of the present invention. Any equivalent structural changes made by using the content of the specification of the present invention are included within the scope of the rights of the present invention.

Claims

1. An ecological restoration device for preventing sediment in inland rivers and lakes from being affected by tidal currents, characterized in that: The ecological restoration device is arranged at the junction of seawater and inland rivers and lakes, and includes a rubber dam (1) and a cage structure (2). The cage structure (2) is parallel to the length direction of the rubber dam (1) and the cage structure (2) is located above the rubber dam (1). The cage structure (2) includes a motor (21), a shaft rod (22), two iron chains (23), a roller (24), a stepped grid frame (25) and several cages (26). The shaft rod (22) is connected to the output shaft of the motor (21) and is located directly above the rubber dam (1). The roller (24) is located on the side of the shaft rod (22) facing the sea, and the horizontal height of the roller (24) is not lower than that of the shaft rod (22). The stepped grid frame (25) is arranged facing the sea and is located between the shaft rod (22) and the rubber dam (1). The two iron chains (23) are arranged in parallel on both sides of the stepped grid frame (25), and the corresponding ends of the two iron chains (23) are respectively fixedly connected to both sides of the bottom row grid of the stepped grid frame (25), and the corresponding other ends of the two iron chains (23) are respectively fixedly connected to the shaft rod (22). At the same time, the two iron chains (23) abut against the roller (24) and are in rolling connection with the roller (24). Several cages (26) are arranged in the grids (251) of the stepped grid frame (25). The motor (21) is fixed to the shore, and the roller (24) is in rolling connection with the shore. An immobilized biofilm carrier is arranged in the cage (26).

2. The ecological restoration device for preventing sediment in inland rivers and lakes from tidal inflow according to claim 1, characterized in that: The rubber dam (1) is a liquid dam or a pneumatic shield dam.

3. The ecological restoration device for preventing sediment in inland rivers and lakes with tidal inflow according to claim 2, characterized in that: When the bottom end of the stepped grid frame (25) is flush with the bottom end of the rubber dam (1) filled with water or gas, the top row grid of the stepped grid frame (25) is located between the shaft rod (22) and the rubber dam (1).

4. The ecological restoration device for preventing sediment in inland rivers and lakes with tidal inflow according to claim 3, characterized in that: The immobilized biofilm carrier in the cage (26) is oyster shell, ceramsite or polyurethane film hanging filler.

5. Application of the ecological restoration device for preventing sediment and ecological restoration during the process of seawater flowing into inland rivers and lakes as described in any one of claims 1-4.

6. The application of an ecological restoration device for preventing sediment in inland rivers and lakes with tide inflow according to claim 5, characterized in that The process is as follows: 1) When the tide is rising, fill the rubber dam (1) with gas or water. The bottom end of the stepped grid frame (25) contacts the water bottom. When seawater flows into the inland river and lake, it passes through the stepped grid frame (25) and the upper end of the rubber dam (1) in sequence. The immobilized biofilm carrier in the cage (26) contacts the water body to form a high-efficiency biofilm, completing the degradation of organic matter pollutants in the water body. The rubber dam (1) completes the blocking of sediment in the water body. 2) During the flood season or the ebb tide period, evacuate the rubber dam (1) and start the motor (21). The shaft rod (22) rotates accordingly, driving the two iron chains (23) to rotate. While the iron chains (23) are wound around the shaft rod (22), the stepped grid frame (25) is lifted accordingly. At this time, the rubber dam (1) lies flat on the water bottom, allowing the water in the inland river and lake to carry sediment and flow into the sea. 3) When the tide is rising again, fill the rubber dam (1) with gas or water, and start the motor (21) to reverse the rotation direction of the shaft rod (22) relative to that in step 2). The iron chains (23) lower the stepped grid frame (25) along the roller (24), making the bottom end of the stepped grid frame (25) contact the water bottom for a new round of ecological restoration of the water body.

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