Detachable tidal overflow structure for ecological management

Abstract

The utility model relates to the technical field of novel ecological management, in particular to a detachable tidal overflow structure for ecological management, which comprises water retaining cofferdams, a water storage unit is arranged on one side of each water retaining cofferdam far away from tidal water, and a plurality of groups of water retaining cofferdams are horizontally and parallelly buried at the bottoms of the water retaining cofferdams. The two ends of each group of overflow pipes respectively extend to the water storage unit and the tidewater area through bent pipes, and the end parts of the overflow pipes can be vertically connected with extension pipes in a pipe connection manner, so that when water storage operation is carried out in the water storage unit, the pipe top elevation of one side of the water storage unit in the overflow pipes is adjusted to be lower than the pipe top elevation of the tidewater area; and water in the tidal water area is guided to overflow to the water storage unit, so that temporary water pumps mostly utilized in most existing treatment areas are replaced for water storage and drainage work, and the problems that the cost for large-area water storage treatment is high at present, and a diesel engine is adopted to drive a large number of water pumps to work, so that the oil overflow risk is generated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of novel ecological management, in particular to a disassembly type tidal overflow structure for ecological management. Background Art

[0002] The commonly used physical method for the treatment of Spartina alterniflora is "mowing + flooding", that is, first build a cofferdam at the edge of the treatment area, build a dividing sub-weir between each water storage unit, and set up reasonable drainage facilities, then mow the above-ground part of the Spartina alterniflora plants in each water storage unit with water, and finally store water and flood the land. The key to this treatment method is water storage. The water depth for mowing with water is 40cm. After mowing, the flooding depth should be maintained at no less than 60cm, and the continuous flooding time should be no less than 180d. During the flooding period, the water lost by evaporation and leakage should be replenished in time to maintain the flooding depth.

[0003] However, in actual operation, temporary water pumps are used for water storage and drainage in most treatment areas. The cost of water storage for large-scale flooding management is high, and there is a risk of oil spills caused by the use of diesel engines to drive a large number of water pumps. Utility Model Content

[0004] The purpose of the utility model is to provide a detachable tidal overflow structure for ecological management, which is used to solve the problem that most of the existing management areas use temporary water pumps for water storage and drainage, the cost of water storage for large-scale flooding management is high, and there is a risk of oil spills caused by using diesel engines to drive a large number of water pumps.

[0005] To achieve the above-mentioned purpose, the utility model provides a detachable tidal overflow structure for ecological management, including a water retaining cofferdam, a water storage unit is provided on the side away from the tidal water, a plurality of groups of water retaining cofferdams are buried horizontally and in parallel at the bottom of the water retaining cofferdam, and both ends of each group of overflow pipes extend to the water storage unit and the tidal water area respectively through curved pipes, and the ends of the overflow pipes can be vertically connected to extension pipes;

[0006] When water is stored in the water storage unit, the top elevation of the overflow pipe on one side of the water storage unit is adjusted to be lower than the top elevation of the overflow pipe in the tidal area, so as to guide the water in the tidal area to overflow to the water storage unit.

[0007] As a further solution of the utility model, the extension pipe is connected to the end of the overflow pipe through threads.

[0008] As a further solution of the utility model, multiple groups of extension tubes can be fixedly connected in sequence by threads.

[0009] Compared with the prior art, the utility model controls the elevation of the overflow pipe top through a detachable extension pipe, utilizes the water level difference between the water storage unit and the tidal area on the outer sea side to achieve gravity storage and drainage, saves temporary water pump costs and reduces environmental risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic structural diagram of a disassembled tidal overflow structure for ecological management.

[0011] In the attached figure: 1. overflow pipe; 2. water retaining cofferdam; 3. water storage unit; 4. tidal zone; 5. extension pipe. DETAILED DESCRIPTION

[0012] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0013] like Figure 1 As shown, in an embodiment of the utility model, a detachable tidal overflow structure for ecological management includes a water retaining cofferdam 2, a water storage unit 3 is provided on the side away from the tide, the bottom of the water retaining cofferdam 2 is horizontal and multiple groups of water retaining cofferdams 2 are buried in parallel, and both ends of each group of overflow pipes 1 extend to the water storage unit 3 and the tidal area 4 respectively through curved pipes, and the end of the overflow pipe 1 can be vertically connected with an extension pipe 5. When water storage operation is performed in the water storage unit 3, the top elevation of the overflow pipe 1 on the side of the water storage unit 3 is adjusted to be lower than the top elevation of the tidal area 4, so as to guide the water in the tidal area 4 to overflow to the water storage unit 3.

[0014] Specifically, the overflow pipe 1 is arranged perpendicular to the long side direction of the water retaining cofferdam 2. The overflow pipe 1 is located below the water retaining cofferdam 2 and is a straight pipe. The ends of the overflow pipes 1 on both sides of the water retaining cofferdam 2 extend out of the water surface through curved pipes. The initial top elevation of the overflow pipe 1 is 40 cm higher than the bottom of the water storage unit 3. The overflow pipes 1 on both sides of the water retaining cofferdam 2 are threaded, and extension pipes 5 can be added step by step.

[0015] In the initial stage of water storage, the initial top elevation of the overflow pipe 1 on both sides of the water retaining cofferdam 2 is kept low. When the tidal area 4 on the outer sea side encounters high tide, the tidal water can flow into the water storage unit 3 through the overflow pipe 1. When the water level in the water storage unit 3 reaches the pipe mouth, it means that the water storage unit 3 has reached the water-carrying elevation of 40 cm. At this time, two 20 cm extension pipes 5 can be added to the water storage unit 3 to make the overflow pipe 1 in the water storage unit 3 higher than the highest tidal level on the outer sea side, thereby playing a blocking role.

[0016] During mowing with water, if extreme weather occurs, the high tide may overflow the top of the cofferdam 2 and enter the water storage unit 3. The two 20 cm extension pipes 5 in the water storage unit 3 are pulled out, and the water in the water storage unit 3 during low tide can flow out to the open sea side through the overflow pipe 1 to ensure that the requirement of "water depth 40 cm during mowing with water" is met. After the water recedes, two 20 cm extension pipes 5 are added to the water storage unit 3 to achieve blocking.

[0017] After the mowing with water is completed, according to the requirement that "the flooding depth should be maintained at no less than 60cm", emergency water replenishment is needed. At this time, a 20cm extension pipe 5 is pulled out in the water storage unit 3. When the tide level in the open sea is higher than the elevation of the top of the overflow pipe 1, it can flow into the water storage unit 3 by gravity. When the water level in the water storage unit 3 reaches the elevation of the overflow pipe 1 in the water storage unit 3, extension pipes 5 are added step by step so that it can continue to overflow into the water storage unit 3 at high tide until the water storage depth in the water storage unit 3 reaches 80cm.

[0018] During flooding, the water level in the water storage unit 3 is easily lowered due to evaporation and leakage. In order to maintain a flooding depth of not less than 60 cm, the elevation of the overflow pipe 1 in the water storage unit 3 can be gradually increased. When the tide level on the open sea side is higher than the elevation of the overflow pipe 1, water can be replenished by gravity. After the water is replenished, the extension pipe 5 is raised to achieve blocking.

[0019] After the flooding time reaches 180 days, the water storage unit 3 is in the water withdrawal period, and the extension pipe 5 can be removed step by step to accelerate the drainage of water in the water storage unit 3.

[0020] like Figure 1 As shown, in an embodiment of the utility model, the extension tube 5 is connected to the end of the overflow pipe 1 by a thread, and multiple groups of the extension tubes 5 can be fixedly connected in sequence by threads. When connecting, the extension tube 5 and the overflow pipe 1 are connected by the internal thread of the extension tube 5 and the external thread on the overflow pipe 1, and multiple extension tubes 5 can be connected by internal and external threads.

[0021] In summary, the utility model controls the top elevation of the overflow pipe 1 through the detachable extension pipe 5, and utilizes the water level difference between the water storage unit 3 and the tidal area 4 on the outer sea side to realize gravity storage and drainage, thereby saving temporary water pump costs and reducing environmental risks.

[0022] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A detachable tidal overflow structure for ecological management, characterized in that: It includes a water retaining cofferdam, a water storage unit is arranged on the side away from the tidal water, a plurality of water retaining cofferdams are buried horizontally and in parallel at the bottom of the water retaining cofferdam, both ends of each overflow pipe extend to the water storage unit and the tidal water area respectively through curved pipes, and the end of the overflow pipe is connected to an extension pipe; When water is stored in the water storage unit, the top elevation of the overflow pipe on one side of the water storage unit is adjusted to be lower than the top elevation of the overflow pipe in the tidal area, so as to guide the water in the tidal area to overflow to the water storage unit.

2. A detachable tidal overflow structure for ecological management according to claim 1, characterized in that: The extension pipe is connected to the end of the overflow pipe through threads.

3. A detachable tidal overflow structure for ecological management according to claim 2, characterized in that: The plurality of extension tubes are fixedly connected in sequence through threads.

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