Conical fishway structure

Abstract

The utility model provides a conical fishway structure which comprises a fishway inlet section, a fishway main body structure section and a fishway outlet section which are connected in sequence, and is characterized in that the fishway main body structure section comprises a conical base, and a foundation supporting structure is arranged below the conical base; a plurality of circles of fishway retaining walls which take the vertex of the conical base as the circle center and spirally climb upwards along the bottom of the conical base are arranged on the conical base, the higher the climbing height of the fishway retaining walls on the conical base is, the radius of the fishway retaining walls is gradually reduced, and a fishway for fish to pass through is formed between every two adjacent circles of fishway retaining walls; the fishway is spirally lifted along the bottom of the conical base in a variable radius mode, the lifting gradient is smaller and smaller, and the climbing difficulty of fishes is lowered. The conical base is easy to manufacture, meanwhile, the using amount of building materials is reduced, and cost is saved; and a foundation supporting structure is adopted below the conical base, so that the overall construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy engineering and environmental protection engineering, in particular to a conical fishway structure. Background Art

[0002] There are many types of fishways, mainly technical fishways and ecological fishways such as vertical seam fishways, pool fishways, baffle fishways (Daniel fishways), etc. Traditional fishways often use reinforced concrete cast-in-place structures, which have a long construction period, complex layout, large land area, and cannot be directly arranged on stepped excavation surfaces with large height differences.

[0003] Although a spiral lifting fishway structure with authorization announcement number CN 217419537 U solves the above problems, the cantilever structure is difficult to construct and the spiral climbing slope of the fishway structure is too steep, making it difficult for fish to spiral upward in the fishway. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a tapered fishway structure, which can solve the problems of the existing fishway structure being difficult to construct, the fishway climbing slope being steep, and the difficulty of fish climbing in the fishway.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] A conical fishway structure comprises a fishway inlet section, a fishway main structure section and a fishway outlet section which are connected in sequence, and is characterized in that the fishway main structure section comprises a conical base, a basic support structure is arranged below the conical base, and a fishway retaining wall is arranged on the conical base, which spirally climbs upward for several circles along the bottom of the conical base with its vertex as the center of the circle, and the radius of the fishway retaining wall gradually decreases as the height of the fishway retaining wall climbing on the conical base increases, and a fishway for fish passing is formed between two adjacent circles of the fishway retaining wall.

[0007] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0008] The basic support structure includes a plurality of columns of different heights, wherein the column located below the apex of the conical base is the tallest.

[0009] The retaining walls on both sides of the fishway inlet section are connected to one end of the fishway retaining wall located at the highest point of the conical base, and the fishway inlet section is communicated with the upstream river water.

[0010] The retaining walls on both sides of the fishway exit section are connected to one end of the fishway retaining wall located at the lowest point of the conical base, and the fishway exit section is communicated with downstream river water.

[0011] A number of stone thresholds are arranged in the fishway.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects: the main structural section of the fishway adopts a conical base, and the fishway is lifted in a variable-radius spiral along the bottom of the conical base, the lifting slope becomes smaller and smaller, and the climbing difficulty of fish is reduced; the conical base is simple to manufacture, while reducing the amount of building materials and saving costs; a basic support structure is adopted under the conical base, which reduces the overall construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view of the utility model.

[0014] Figure 2 It is a typical cross-sectional view of the utility model. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation scheme of the present utility model is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent elements with the same or similar functions. However, it should be understood that the accompanying drawings are only used for illustrative purposes and cannot be understood as limitations on the present utility model. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted, and the positional relationship described in the accompanying drawings is only used for illustrative purposes and cannot be understood as limitations on the present utility model.

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0017] The utility model provides a conical fishway structure, comprising a fishway inlet section 1, a fishway main structure section 2 and a fishway outlet section 4 which are connected in sequence, and is characterized in that the fishway main structure section 2 comprises a conical base 21, a basic support structure 3 is arranged below the conical base 21, and a fishway retaining wall 22 is arranged on the conical base 21, which spirally climbs upward for several circles along the bottom of the conical base 21 with its vertex as the center of the circle, and the radius of the fishway retaining wall 22 gradually decreases as the height at which the fishway retaining wall 22 climbs on the conical base 21 is higher, and a fishway for fish passing is formed between two adjacent circles of the fishway retaining wall 22.

[0018] The function of the fishway is that when the river channel is cut off due to the construction of water-retaining structures, fish need to migrate from the upstream to the downstream of the river through the fishway, and when the fish flow back, they migrate from the downstream to the upstream. Therefore, the above-mentioned fishway inlet section 1 and fishway outlet section 4 are only used as a distinction in naming. In fact, in both cases of fish migration upstream and downstream, the fishway inlet section 1 and the fishway outlet section 4 can both be used as the entrance / exit of fish.

[0019] The basic support structure 3 includes a number of columns of different heights, wherein the column located below the apex of the conical base 21 is the tallest.

[0020] The retaining walls on both sides of the fishway inlet section 1 are connected to one end of the fishway retaining wall 22 located at the highest point of the conical base 21, and the fishway inlet section 1 is connected to the upstream river water. The fishway inlet section 1 also needs to be connected to the water retaining structure of the river-blocking building.

[0021] The retaining walls on both sides of the fishway exit section 4 are connected to the end of the fishway retaining wall 22 located at the lowest part of the conical base 21, and the fishway exit section 4 is connected to the downstream river water.

[0022] The fishway outlet section 4 needs to be lower than the lowest water level downstream of the dam structure. When the downstream water level is high and the fishway outlet section 4 is flooded, the fishway with the outer circle of the fishway main structure section 2 contacting the water surface needs to be used as a temporary inlet / outlet.

[0023] The main structural section 2 of the fishway adopts a conical base 21. The fishway is lifted in a variable radius spiral along the bottom of the conical base 21, and the lifting slope becomes smaller and smaller. When the fish migrate from downstream to upstream, they enter the fishway from the downstream fishway outlet section 4 and climb to the upstream along the slope of the conical base 21. The slope of the conical base 21 is small, and the climbing difficulty is reduced. Finally, they swim out from the upstream fishway inlet section 1.

[0024] A plurality of stone sills 23 are provided in the fishway, the bottom of which is fixed on the conical base 21, one side of the stone sill 23 is connected to the inner side of the fishway retaining wall 22, and the other side of the stone sill 23 is located in the middle of the fishway. The stone sills 23 are used to simulate the flow state of the riverbed water and construct a resting area for fish.

[0025] The fishway inlet section 1, the foundation support structure 3 and the fishway outlet section 4 are all cast-in-place reinforced concrete structures, which can be adjusted according to the structure of the dam building and the excavation terrain. The fishway main structure section 2 can be a prefabricated reinforced concrete structure, thereby further improving the construction efficiency.

[0026] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the tapered fishway structure of the present invention, and can produce the positive effects recorded in the present invention.

[0027] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0028] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

[0029] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and affect variations to the disclosed embodiments by studying the drawings, disclosure, and appended claims. In addition, in the claims and the specification, words such as "comprises", "comprising", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0030] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A conical fishway structure, comprising a fishway inlet section (1), a fishway main structure section (2) and a fishway outlet section (4) connected in sequence, characterized in that: The main fishway structure section (2) comprises a conical base (21), a basic support structure (3) is provided below the conical base (21), and a fishway retaining wall (22) is provided on the conical base (21), which spirally climbs upward along the bottom of the conical base (21) for a plurality of circles with its vertex as the center of the circle, and the radius of the fishway retaining wall (22) gradually decreases as the height of the fishway retaining wall (22) climbing on the conical base (21) increases, and a fishway for fish passing is formed between two adjacent circles of the fishway retaining wall (22).

2. A tapered fishway structure as claimed in claim 1, characterized in that: The basic support structure (3) comprises a plurality of columns of different heights, wherein the column located below the apex of the conical base (21) is the tallest.

3. A tapered fishway structure as claimed in claim 1, characterized in that: The retaining walls on both sides of the fishway inlet section (1) are connected to one end of the fishway retaining wall (22) located at the highest point of the conical base (21), and the fishway inlet section (1) is in communication with upstream river water.

4. A tapered fishway structure as claimed in claim 1, characterized in that: The retaining walls on both sides of the fishway exit section (4) are connected to an end of the fishway retaining wall (22) located at the lowest point of the conical base (21), and the fishway exit section (4) is in communication with downstream river water.

5. A tapered fishway structure as claimed in claim 1, characterized in that: A number of stone thresholds (23) are arranged in the fishway.

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