Assembly type adjustable vertical seam fishway and mounting and adjusting method

Abstract

The invention discloses an assembly type adjustable vertical seam fishway and a mounting and adjusting method. Transverse partition plate assemblies arranged in the adjustable vertical seam fishway at intervals comprise partition plate components A, partition plate components B, partition plate components C and partition plate components D which are spliced into a whole through dovetail blocks and dovetail grooves, and longitudinal guide plates are mounted on one sides of the transverse partition plate assemblies; the lower sides of the transverse partition plate assemblies are embedded into horizontal sliding rails on the upper side of a bottom plate of the fishway groove body. The mounting and adjusting method comprises the steps that (S1) the partition plate component C, the partition plate component D, the partition plate component A and the partition plate component B are sequentially spliced into the transverse partition plate assembly mounted on a fishway groove body bottom plate. According to the method, the construction speed is high, the precision is high, the site requirement is low, the construction safety and economical efficiency are remarkably improved, the method can dynamically adapt to upstream hydrological changes and fish variety changes, and the ecological adaptability of the fishway is remarkably improved.

Description

Technical Field

[0001] This invention relates to a fishway facility for fish to migrate upstream through a dam, and particularly to a fishway and installation and commissioning method that uses factory prefabrication and on-site assembly of diaphragms, belonging to the field of water conservancy engineering technology. Background Technology

[0002] Fishways are artificial channels that allow fish to migrate safely and effectively. They are important ecological compensation facilities in modern water conservancy projects. They primarily utilize structures such as spaced baffles within the channel to dissipate water flow energy and create a suitable hydraulic environment for fish to migrate upstream. Currently, technically advanced fishways, especially vertical slotted fishways, are widely used due to their simple structure and strong adaptability to water level fluctuations. Traditional vertical slotted fishways are often constructed on-site using a method of integrated concrete pouring of the channel body and multiple baffles.

[0003] However, the aforementioned construction method of vertical slotted fishways has significant drawbacks: First, many existing water conservancy projects undergoing renovation or expansion lacked pre-planned space in their initial designs, resulting in relatively narrow construction sites for fishways. Traditional cast-in-place concrete construction in such confined spaces faces challenges such as difficulties in bringing in large equipment and cumbersome procedures, leading to low construction efficiency and long construction periods. Second, during the operational phase, once a traditional cast-in-place concrete fishway is built, its dimensions and internal flow patterns are permanently fixed, making it unable to adapt to dynamically changing water levels, flow rates, and the behavioral habits of different fish species. Existing fishway research primarily relies on numerical simulations and laboratory-scale physical model experiments. While related studies have demonstrated a correlation between scaled-down model test results and prototype test results, the randomness of fish migration upstream leads to discrepancies between prototype fishway results and laboratory results. This necessitates an adjustable structure for the prototype fishway. If the fish passage effect is unsatisfactory during operation, the fishway dimensions can be adjusted to modify water flow conditions to accommodate fish upstream migration, thereby improving project efficiency and avoiding investment waste. To achieve the goal of adjustability, prefabricated components have a natural advantage in engineering construction, and at the same time, they are in line with the development trend of domestic engineering construction. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated adjustable vertical slot fishway and its installation and debugging method, in order to solve the problems of low construction efficiency of traditional vertical slot fishways in narrow or confined spaces, permanent solidification of the structure after construction, inability to flexibly adjust according to actual hydrological conditions and the habits of target fish, resulting in failure to achieve the fishway's migratory effect.

[0005] This invention is achieved through the following technical solution: An adjustable, prefabricated vertical fishway includes a precast concrete fishway channel. A vertical wall panel on one side of the fishway channel has spaced-apart transverse guide plates perpendicular to the vertical wall panel. Spaced-apart transverse partition assemblies abut against the inner side of the vertical wall panel on the other side of the fishway channel. The transverse guide plates and transverse partition assemblies are staggered, with adjacent transverse guide plates and adjacent transverse partition assemblies forming their respective chambers. Each transverse partition assembly includes partition components A, B, C, and D, assembled as a single unit. The left and right adjacent sides of partition components A and B, and the left and right adjacent sides of partition components C and D... The sides are vertically connected by vertical dovetail blocks and vertical dovetail grooves; the upper and lower adjacent sides of partition components A and C, and the upper and lower adjacent sides of partition components B and D are horizontally connected by horizontal dovetail blocks and horizontal dovetail grooves; one side of the L-shaped longitudinal guide plate or the straight plate side is fixedly connected to one side of partition component B and partition component D through an adjustable connecting mechanism, thereby connecting the upper partition components A and B, and the lower partition components C and D into a horizontal partition assembly; the lower side of the horizontal partition assembly is embedded and fixed in the horizontal slide rails on the upper side of the bottom plate of the fish passage, and the horizontal slide rails are made of paired angle steel. The objective of this invention can also be achieved in one step through the following technical measures.

[0006] Furthermore, the partition components A, B, C, and D are all rectangular concrete slabs, and a rectangular frame welded from angle steel covers the perimeter of the rectangular concrete slabs. A vertical dovetail block extends from one side of partition member A. Horizontal dovetail grooves are provided at the bottom of partition member A and the bottom of partition member B. A vertical dovetail groove is provided on the side of partition member B adjacent to partition member A. Horizontal dovetail blocks extend upward from the top of partition member C and the top of partition member D. A vertical dovetail block is provided on the side of partition member C adjacent to partition member D. A vertical dovetail groove is provided on the side of partition member D adjacent to partition member C. Vertical rectangular grooves are provided on the other side of partition member B and the other side of partition member D. Partition components A and B, and partition components C and D are horizontally connected as a single unit through vertical insertion of adjacent vertical dovetail blocks and vertical dovetail slots. The horizontally connected partition components A and B are connected to partition components C and D through horizontal insertion of adjacent horizontal dovetail slots and horizontal dovetail blocks to form a horizontal partition assembly. A rectangular block at one end of an L-shaped longitudinal guide plate is inserted into a vertically penetrating rectangular slot on one side of partition component B and one side of partition component C, and is fixedly connected to the other side of partition component B and the other side of partition component D through an adjustable connecting mechanism. The other two sides of partition components B and D are partially covered with panels made of steel plates.

[0007] Furthermore, the rectangular block at one end of the straight longitudinal guide plate is inserted into a vertical rectangular groove that runs vertically through one side of the partition member B and one side of the partition member D, and is fixedly connected to the other side of the partition member B and the other side of the partition member D through an adjustable connecting mechanism.

[0008] Furthermore, the outer surfaces of the vertical dovetail block, the horizontal dovetail block, and the rectangular block, as well as the outer surfaces of the vertical dovetail groove, the horizontal dovetail groove, and the vertical rectangular groove, are respectively covered with protective steel plates; the thickness of the protective steel plates and the panel is 5-6 mm.

[0009] Furthermore, the fitting clearance between the vertical dovetail block and the vertical dovetail groove, the fitting clearance between the horizontal dovetail block and the horizontal dovetail groove, and the fitting clearance between the rectangular block and the vertical rectangular groove are all 3 to 4 mm.

[0010] Furthermore, the adjustable connection mechanism includes multiple rows of transverse holes in the partition components on the other side of the upper and lower connected partition component B and partition component D, and multiple rows of transverse holes in the rectangular blocks on the rectangular blocks at one end of the L-shaped longitudinal guide plate or the rectangular blocks at one end of the straight longitudinal guide plate. The transverse holes in the partition components and the transverse holes in the rectangular blocks are positioned correspondingly. Fastening bolts pass through the corresponding transverse holes in the partition components and the transverse holes in the rectangular blocks, and the L-shaped longitudinal guide plate or the straight longitudinal guide plate is fixed to the other side of the transverse partition assembly by tightening the nuts at one end of the fastening bolts to the required extension length.

[0011] An installation and adjustment method for a prefabricated adjustable vertical slot fishway includes the following steps: S1) Hoist the partition component C into the horizontal slide rail on the upper side of the bottom plate of the fish passage, and make one vertical side of the partition component C abut against the inner side of the vertical wall panel on the other side of the fish passage; then hoist the partition component D onto one side of the partition component C, and align the vertical dovetail groove adjacent to the partition component C with the vertical dovetail block of the partition component C; then lower the partition component D until the vertical dovetail groove and the vertical dovetail block are vertically inserted into each other, so that the partition component C and the partition component D are horizontally connected as one unit, and make the bottom surface of the partition component D abut against the bottom surface of the horizontal slide rail on the upper side of the bottom plate of the fish passage, thereby installing the partition component C and the partition component D on the bottom plate of the fish passage; S2) Hoist partition component B to the upper side of partition component A, and align the vertical dovetail groove on one side of partition component B with the vertical dovetail block on the other side of partition component A. Then lower partition component B so that the vertical dovetail groove is inserted into the vertical dovetail block, and horizontally connect partition component A and partition component B into one unit. Next, hoist the integrated partition component A and partition component B, align one end of the horizontal dovetail groove of partition component A with one end of the horizontal dovetail block at the top of partition component D, then horizontally move the horizontal dovetail groove into the horizontal dovetail block at the top of partition component D, and horizontally move the integrated partition component A and partition component B from the horizontal dovetail block at the top of partition component D to the horizontal dovetail block at the top of partition component C until one side of partition component A abuts against the inner side of the vertical wall panel on the corresponding side of the fish passage body, completing the tenon and mortise splicing of the horizontal partition assembly. S3) Insert the rectangular block at one end of the L-shaped longitudinal guide plate or the rectangular block at one end of the straight longitudinal guide plate into the vertical rectangular groove that runs vertically through one side of the partition component B and one side of the partition component D. Adjust the distance between the other end of the L-shaped longitudinal guide plate or the other end of the straight longitudinal guide plate and the corresponding end of the transverse guide plate to adjust the width of the vertical slot C. Align the transverse hole of the partition component with the transverse hole of the corresponding rectangular block. Then, pass the fastening bolts through the transverse holes of the corresponding partition component and the transverse holes of the rectangular block respectively. By tightening the nut at one end of the fastening bolt, fix the L-shaped longitudinal guide plate or the straight longitudinal guide plate to the other side of the partition component B and the partition component D according to the required extension length. This completes the installation of the L-shaped longitudinal guide plate or the straight longitudinal guide plate. S4) Weld and fix the bottom sides of the cuboid frames and the lower part of the panel of each of the partition components C and D to the upper side of the horizontal slide rail on the upper side of the bottom plate of the fish passage body; thereby installing the first transverse partition assembly on the bottom plate of the fish passage body. S5) Repeat steps S1) to S4) multiple times to complete the installation of the remaining transverse partition components in the fishway tank; then fill the gap between the rectangular block and the vertical rectangular groove with corresponding rubber strips, and embed waterproof sealing strips at all joints of the transverse partition components for sealing.

[0012] The present invention has the following beneficial effects: All diaphragm components of this invention can be prefabricated in a factory. The four diaphragm components are assembled in a "building block" style using dovetail blocks and dovetail grooves with mortise and tenon joints, making the four diaphragm components of the cross-jointed diaphragm assembly firmly connected and difficult to separate, thus improving the reliability of the diaphragm assembly. It completely eliminates the complex processes of tying reinforcing bars, erecting formwork, and pouring and curing in cast-in-place concrete construction. It offers fast construction speed, high precision, and low site requirements, improving the manufacturing accuracy of the diaphragm assembly and significantly enhancing construction safety and economy.

[0013] The installation and adjustment method of this invention adjusts the width of the vertical slot by adjusting the front and rear position of the rectangular block at one end of the longitudinal guide plate in the rectangular groove of the transverse diaphragm assembly. By selecting different longitudinal guide plates, such as L-shaped longitudinal guide plates and straight longitudinal guide plates, multi-dimensional, flexible and precise control of the hydraulic morphology of the fishway is achieved. It has a dual adjustment mechanism of adjusting the slot width by sliding the longitudinal guide plate and adjusting the flow direction by changing the longitudinal guide plate. This allows the constructed fishway to dynamically adapt to upstream water level fluctuations, flow changes and the swimming habits of different types of fish (such as bottom fish and mid-to-upper-level fish), greatly improving the ecological adaptability of the fishway.

[0014] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0015] Figure 1 This is a top view of the adjustable vertical slotted fishway, with a straight longitudinal guide plate installed at one end of the transverse diaphragm assembly. Figure 2 This is a top view of the adjustable vertical slotted fishway's transverse diaphragm assembly with an L-shaped longitudinal guide plate at one end. Figure 3 This is a three-dimensional diagram of partition components A, B, C, and D arranged in two rows before assembly. Figure 4 This is a three-dimensional view of the assembled partition components A, B, C, and D, along with the straight longitudinal guide plate. Figure 5 This is a three-dimensional view of the assembled partition components A, B, C, and D, and the L-shaped longitudinal guide plate. Figure 6 yes Figure 4 A magnified view from direction A; Figure 7 yes Figure 6 Enlarged partial sectional view of BB; Figure 8 yes Figure 2 Enlarged cross-sectional view of DD. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 and Figure 8As shown, the prefabricated adjustable vertical slot fishway of this embodiment includes a precast concrete fishway channel 1. A transverse guide plate 2 is arranged at center-to-center intervals A = 3500 mm on the inner side of a vertical wall panel 11 on one side of the fishway channel 1. The transverse guide plate 2 is perpendicular to the vertical wall panel 11, and the inner distance B between the vertical wall panels 11 of the fishway channel 1 is 3400 mm. A transverse partition assembly 3, arranged at intervals, rests against the inner side of the vertical wall panel 11 on the side of the fishway channel. The transverse guide plates 2 and the transverse partition assemblies 3 are staggered, and adjacent transverse guide plates 2 and adjacent transverse partition assemblies 3 respectively form their own pool chambers 13.

[0018] like Figures 3-5 As shown, the transverse partition assembly 3 includes partition components A31, B32, C33, and D34, which are spliced ​​together as a single unit. The left and right adjacent sides of partition components A31 and B32, and the left and right adjacent sides of partition components C33 and D34, are vertically connected by vertical dovetail blocks 311 and vertical dovetail grooves 321, respectively. The upper and lower adjacent sides of partition components A31 and C33, and the upper and lower adjacent sides of partition components B32 and D34, are horizontally connected by horizontal dovetail blocks 331 and horizontal dovetail grooves 312, respectively, forming a transverse partition assembly 3 with a height of 2m and a width of 1.68m. Figure 8 The right side of the L-shaped longitudinal guide plate 42 is fixedly connected to the left side of the partition component B32 and the partition component D34 via the adjustable connecting mechanism 5. The bottom of the transverse partition assembly 3 is embedded in the horizontal slide rail 121 fixed on the upper side of the bottom plate 12 of the fish passage. The horizontal slide rail 121 is made of 14# angle steel in pairs.

[0019] Partition components A31, B32, C33 and D34 are all rectangular concrete slabs. A rectangular frame 313 made of #5 angle steel covers the perimeter of the rectangular concrete slabs to improve the dimensional accuracy of the partition components and prevent damage to the edges and corners of the rectangular concrete slabs.

[0020] like Figure 3 As shown, partition member A31 has a vertical dovetail block 311 extending from its right side, and a horizontal dovetail groove 312 at its bottom. Partition member B32 has a vertical dovetail groove 321 on its left side adjacent to partition member A31, and a horizontal dovetail groove 312 at its bottom. Partition member C33 and partition member D34 each have their own horizontal dovetail blocks 331 extending upwards from their tops. Partition member C33 has a vertical dovetail block 311 on its right side adjacent to partition member D34, and a vertical dovetail groove 321 on its left side adjacent to partition member C33.

[0021] like Figure 3 , Figure 4 and Figure 5As shown, partition components A31 and B32 are horizontally connected as a single unit through the vertical insertion of adjacent vertical dovetail blocks 311 and vertical dovetail grooves 321. The horizontally connected partition components A31 and B32 are then connected to partition components C33 and D34 through the horizontal insertion of adjacent horizontal dovetail grooves 312 and horizontal dovetail blocks 331 to form a horizontal partition assembly 3. The rectangular block 411 at the left end of the L-shaped longitudinal guide plate 42 or the rectangular block 411 at the left end of the straight longitudinal guide plate 42 is inserted into the vertical rectangular grooves 322 that run vertically through the right side of partition component B32 and the right side of partition component C33, respectively. The adjustable connecting mechanism 5 fixes the L-shaped longitudinal guide plate 42 to the right side of partition component B32 and the right side of partition component D34. The two sides of the partition components B32 and D34 are partially covered with steel plate panels 324, which facilitates the insertion and fixing of the transverse partition assembly 3 with the straight longitudinal guide plate 41 or the L-shaped longitudinal guide plate 42 through the adjustable connection mechanism 5.

[0022] The outer surfaces of the vertical dovetail block 311, horizontal dovetail block 331, and rectangular block 411, as well as the outer surfaces of the vertical dovetail groove 321, horizontal dovetail groove 312, and vertical rectangular groove 322, are respectively covered with protective steel plates 323. The thickness of the protective steel plates 323 and the panel 324 is 5mm. This structure prevents damage to the dovetail blocks and dovetail grooves, and the rectangular blocks and rectangular grooves, from collisions during insertion, and effectively improves the dimensional accuracy of the dovetail blocks, dovetail grooves, rectangular blocks, and rectangular grooves. The fitting clearance between the vertical dovetail block 311 and the vertical dovetail groove 321, the horizontal dovetail block 331 and the horizontal dovetail groove 312, and the rectangular block 411 and the vertical rectangular groove 322 are all 4mm, which facilitates the insertion and fixing of the transverse partition assembly 3 to the straight longitudinal guide plate 41 or the L-shaped longitudinal guide plate 42 via the adjustable connecting mechanism 5.

[0023] like Figures 4-7 As shown, the adjustable connecting mechanism 5 includes five columns and four rows of transverse holes 51 on the right side of the upper and lower connected partition members B32 and D34, respectively, and five columns and four rows of transverse holes 412 on the left side of the rectangular block 411 or the rectangular block 411 on the left side of the L-shaped longitudinal guide plate 42. The positions of the partition member transverse holes 51 and the rectangular block transverse holes 412 are corresponding. The fastening bolts 52 pass through the corresponding partition member transverse holes 51 and rectangular block transverse holes 412, respectively. By tightening the nuts 53 on the right side of the fastening bolts 52, the L-shaped longitudinal guide plate 42 or the straight longitudinal guide plate 41 is fixed to the right side of the transverse partition assembly 3 according to the required extension length.

[0024] like Figures 1 to 8 As shown, a method for installing and adjusting a prefabricated adjustable vertical slot fishway includes the following steps: S1) The partition component C33 is hoisted into the horizontal slide rail 121 on the upper side of the bottom plate 13 of the fish passage 1, and one vertical side of the partition component C33 is placed against the inner side of the vertical wall plate 11 on the other side of the fish passage 1. Then, the partition component D34 is hoisted onto one side of the partition component C33, and the vertical dovetail groove 321 adjacent to the partition component C33 is aligned with the vertical dovetail block 311 of the partition component C33. Then, the partition component D34 is lowered until the vertical dovetail groove 321 and the vertical dovetail block 311 are vertically inserted into each other, so that the partition component C33 and the partition component D34 are horizontally connected as one unit, and the bottom surface of the partition component D34 is placed against the bottom surface of the horizontal slide rail 121 on the upper side of the bottom plate 13 of the fish passage 1, thereby installing the partition component C and the partition component D on the bottom plate 13 of the fish passage 1.

[0025] S2) Hoist the partition member B32 to the upper side of the partition member A31, and align the vertical dovetail groove 321 on one side of the partition member B32 with the vertical dovetail block 311 on the other side of the partition member A31. Then lower the partition member B32 so that the vertical dovetail groove 321 is inserted into the vertical dovetail block 311, and connect the partition member A31 and the partition member B32 into one unit. Then, lift the integrated partition components A31 and B32, align one end of the horizontal dovetail groove 312 of partition component A31 with one end of the horizontal dovetail block 331 at the top of partition component D34, then move the horizontal dovetail groove 312 horizontally into the horizontal dovetail block 331 at the top of partition component D34, and move the integrated partition components A31 and B32 laterally from the horizontal dovetail block 331 at the top of partition component D34 to the horizontal dovetail block 331 at the top of partition component C33, until one side of partition component A31 abuts against the inner side of the vertical wall panel 11 on the corresponding side of the fish passage trough body 1, thus completing the mortise and tenon splicing of the horizontal partition assembly 3.

[0026] S3) Insert the rectangular block 411 at one end of the L-shaped longitudinal guide plate 42 or the rectangular block 411 at one end of the straight longitudinal guide plate 41 into the vertical rectangular groove 322 that runs vertically through one side of the partition member B32 and one side of the partition member D34. For example... Figure 1 and Figure 2 As shown, the width of the vertical slit C can be adjusted by adjusting the distance between the other end of the L-shaped longitudinal guide plate 42 or the other end of the straight longitudinal guide plate 41 and the end of the corresponding transverse guide plate 2. The transverse hole 51 of the partition component is aligned with the transverse hole 412 of the corresponding rectangular block. Then, the fastening bolt 52 is passed through the transverse hole 51 of the corresponding partition component and the transverse hole 412 of the rectangular block, respectively. By tightening the nut 53 at one end of the fastening bolt 51, the L-shaped longitudinal guide plate 42 or the straight longitudinal guide plate 41 is fixed to the other side of the partition component B32 and the partition component D34 according to the required extension length, thus completing the installation of the L-shaped longitudinal guide plate 42 or the straight longitudinal guide plate 41.

[0027] S4) The bottom sides of the cuboid frames 313 of the partition components C33 and D34 and the lower side of the panel 324 are respectively welded and fixed to the upper side of the horizontal slide rail 121 on the upper side of the bottom plate 13 of the fish passage, thereby installing the first transverse partition assembly 3 on the bottom plate of the fish passage.

[0028] S5) Repeat steps S1) to S4) multiple times to complete the installation of the remaining transverse partition assemblies 3 in the fishway trough 1. Then fill the gaps between the rectangular block 411 and the vertical rectangular groove 322 with corresponding rubber strips 6, and seal all joints of the transverse partition assembly 3 with waterproof sealing strips 7.

[0029] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution and equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A prefabricated adjustable vertical slot fishway, comprising a precast concrete fishway channel, wherein transverse guide plates are spaced apart and perpendicular to the vertical wall panel on the inner side of one side of the fishway channel; characterized in that, A series of spaced-apart horizontal partition assemblies rest on the inner side of a vertical wall panel on the other side of the fishway. The horizontal guide plates and partition assemblies are staggered, with adjacent horizontal guide plates and adjacent partition assemblies forming their respective chambers. The partition assembly comprises partition members A, B, C, and D, joined together. The left and right adjacent sides of partition members A and B, and the left and right adjacent sides of partition members C and D, are vertically connected by vertical dovetail blocks and vertical dovetail grooves. The upper and lower adjacent sides of partition component C, and the upper and lower adjacent sides of partition components B and D are horizontally connected by horizontal dovetail blocks and horizontal dovetail grooves, respectively; one side of the L-shaped longitudinal guide plate or the straight plate side is fixedly connected to one side of partition component B and partition component D through an adjustable connecting mechanism, thereby connecting the upper partition components A and B, and the lower partition components C and D into a horizontal partition assembly; the lower side of the horizontal partition assembly is embedded and fixed in the horizontal slide rails on the upper side of the bottom plate of the fish passage, and the horizontal slide rails are made of paired angle steel.

2. The prefabricated adjustable vertical slot fishway as described in claim 1, characterized in that, The partition components A, B, C and D are all rectangular concrete slabs, and a rectangular frame made of angle steel covers the perimeter of the rectangular concrete slabs. A vertical dovetail block extends from one side of partition member A. Horizontal dovetail grooves are provided at the bottom of partition member A and the bottom of partition member B. A vertical dovetail groove is provided on the side of partition member B adjacent to partition member A. Horizontal dovetail blocks extend upward from the top of partition member C and the top of partition member D. A vertical dovetail block is provided on the side of partition member C adjacent to partition member D. A vertical dovetail groove is provided on the side of partition member D adjacent to partition member C. Vertical rectangular grooves are provided on the other side of partition member B and the other side of partition member D. Partition components A and B, and partition components C and D are horizontally connected as a single unit through vertical insertion of adjacent vertical dovetail blocks and vertical dovetail slots. The horizontally connected partition components A and B are connected to partition components C and D through horizontal insertion of adjacent horizontal dovetail slots and horizontal dovetail blocks to form a horizontal partition assembly. A rectangular block at one end of an L-shaped longitudinal guide plate is inserted into a vertically penetrating rectangular slot on one side of partition component B and one side of partition component C, and is fixedly connected to the other side of partition component B and the other side of partition component D through an adjustable connecting mechanism. The other two sides of partition components B and D are partially covered with panels made of steel plates.

3. The prefabricated adjustable vertical slot fishway as described in claim 2, characterized in that, A rectangular block at one end of a straight longitudinal guide plate is inserted into a vertical rectangular groove that runs vertically through one side of partition member B and one side of partition member D, and is fixedly connected to the other side of partition member B and the other side of partition member D through an adjustable connecting mechanism.

4. The prefabricated adjustable vertical slot fishway as described in claim 2, characterized in that, The outer surfaces of the vertical dovetail block, horizontal dovetail block, and rectangular block, as well as the outer surfaces of the vertical dovetail groove, horizontal dovetail groove, and vertical rectangular groove, are respectively covered with protective steel plates; the thickness of the protective steel plates and the panel is 5-6 mm.

5. The prefabricated adjustable vertical slot fishway as described in claim 4, characterized in that, The fitting clearance between the vertical dovetail block and the vertical dovetail groove, the fitting clearance between the horizontal dovetail block and the horizontal dovetail groove, and the fitting clearance between the rectangular block and the vertical rectangular groove are all 3 to 4 mm.

6. The prefabricated adjustable vertical slot fishway as described in claim 2, characterized in that, The adjustable connection mechanism includes multiple rows of transverse holes in the partition components on the other side of the upper and lower connected partition component B and partition component D, and multiple rows of transverse holes in the rectangular blocks on the rectangular blocks at one end of the L-shaped longitudinal guide plate or the rectangular blocks at one end of the straight longitudinal guide plate. The transverse holes in the partition components and the transverse holes in the rectangular blocks are positioned correspondingly. Fastening bolts pass through the corresponding transverse holes in the partition components and the transverse holes in the rectangular blocks, and the L-shaped longitudinal guide plate or the straight longitudinal guide plate is fixed to the other side of the transverse partition assembly by tightening the nuts at one end of the fastening bolts to the required extension length.

7. A method for installing and adjusting a prefabricated adjustable vertical slot fishway as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1) Hoist the partition member C into the horizontal slide rail on the upper side of the bottom plate of the fish passage, and make one vertical side of the partition member C abut against the inner side of the vertical wall panel on the other side of the fish passage; then hoist the partition member D onto one side of the partition member C, and align the vertical dovetail groove adjacent to the partition member C with the vertical dovetail block of the partition member C; then lower the partition member D until the vertical dovetail groove and the vertical dovetail block are vertically inserted into each other, so that the partition member C and the partition member D are horizontally connected as one unit, and make the bottom surface of the partition member D abut against the bottom surface of the horizontal slide rail on the upper side of the bottom plate of the fish passage, thereby installing the partition member C and the partition member D on the bottom plate of the fish passage; S2) Hoist partition component B to the upper side of partition component A, and align the vertical dovetail groove on one side of partition component B with the vertical dovetail block on the other side of partition component A. Then lower partition component B so that the vertical dovetail groove is inserted into the vertical dovetail block, and horizontally connect partition component A and partition component B into one unit. Next, hoist the integrated partition component A and partition component B, align one end of the horizontal dovetail groove of partition component A with one end of the horizontal dovetail block at the top of partition component D, then horizontally move the horizontal dovetail groove into the horizontal dovetail block at the top of partition component D, and horizontally move the integrated partition component A and partition component B from the horizontal dovetail block at the top of partition component D to the horizontal dovetail block at the top of partition component C until one side of partition component A abuts against the inner side of the vertical wall panel on the corresponding side of the fish passage body, completing the tenon and mortise splicing of the horizontal partition assembly. S3) Insert the rectangular block at one end of the L-shaped longitudinal guide plate or the rectangular block at one end of the straight longitudinal guide plate into the vertical rectangular groove that runs vertically through one side of the partition component B and one side of the partition component D. Adjust the distance between the other end of the L-shaped longitudinal guide plate or the other end of the straight longitudinal guide plate and the corresponding end of the transverse guide plate to adjust the width of the vertical slot C. Align the transverse hole of the partition component with the transverse hole of the corresponding rectangular block. Then, pass the fastening bolts through the transverse holes of the corresponding partition component and the transverse holes of the rectangular block respectively. By tightening the nut at one end of the fastening bolt, fix the L-shaped longitudinal guide plate or the straight longitudinal guide plate to the other side of the partition component B and the partition component D according to the required extension length. This completes the installation of the L-shaped longitudinal guide plate or the straight longitudinal guide plate. S4) Weld and fix the bottom sides of the cuboid frame and the lower part of the panel of each of the partition components C and D to the upper side of the horizontal slide rail on the upper side of the bottom plate of the fish passage body, thereby installing the first transverse partition assembly on the bottom plate of the fish passage body. S5) Repeat steps S1) to S4) multiple times to complete the installation of the remaining transverse partition components in the fishway tank; then fill the gap between the rectangular block and the vertical rectangular groove with corresponding rubber strips, and embed waterproof sealing strips at all joints of the transverse partition components for sealing.

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