A flood control device and method for hydraulic engineering

Abstract

This invention relates to the field of water conservancy engineering equipment technology, and discloses a flood control device and method for water conservancy projects. The device includes a gate plate and a hydraulic telescopic mechanism installed between the riverbed and the embankment. A support block is fixedly connected to the riverbed, and a rotating block is rotatably connected to the upper end of the support block. The end of the rotating block away from the support block is fixedly connected to the gate plate. A hydraulic telescopic mechanism is provided on the side of the support block away from the gate plate. The lower end of the hydraulic telescopic mechanism is installed on the riverbed, and the upper end is installed on the gate plate. A sliding groove is provided on the side wall of the embankment, and a slider is slidably connected inside the groove. This invention, by setting slots, sewage troughs, and drainage troughs on the riverbed, allows the drainage gap created when the water-blocking plate is raised during flood discharge to guide debris such as mud, sand, and branches through the sewage trough into the drainage trough for discharge, avoiding the jamming caused by debris accumulation at the bottom of traditional gates.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering equipment technology, specifically to a flood control device and method for water conservancy projects. Background Technology

[0002] In water conservancy projects, to effectively defend against, control, and regulate floods and reduce their threat to human life, property, infrastructure, and the ecological environment, facilities such as dikes, sluice gates (such as tide gates and flood diversion gates), flood walls, and drainage pumping stations are commonly used to intercept, guide, or discharge floodwaters. Among these, the most widely used in river channels is the flap gate, which can automatically open and close to discharge floodwater during flood season and store water during receding water season, directly achieving flood control goals. It is suitable for urban waterlogging prevention, flood control in small and medium-sized rivers, and reservoir spillways.

[0003] As per existing technology, patent CN219410774U discloses a flap gate for hydraulic engineering, comprising a dam foundation, a gate plate body disposed above the dam foundation, a positioning shaft disposed on the gate plate body, and a notch disposed on one side of the outer surface of the gate plate body, with a mounting seat disposed within the notch, and a connecting member rotatably connected to the mounting seat via a fixed shaft. A fixed seat is fixedly installed on one side of the dam foundation, and a positioning port is disposed on the fixed seat, with a hydraulic cylinder rotatably connected within the positioning port. A fixing member is fixedly connected to the top of the hydraulic cylinder, and the fixing member is rotatably connected to the connecting member via a fixed shaft. In this flap gate for hydraulic engineering, the entire structure shares the force through the connecting member, auxiliary rod, and hydraulic cylinder, resulting in a more stable and uniform force distribution, and a firm and safe support connection. This effectively copes with the impact of water pressure, ensuring the stability and safety of the gate and extending its service life.

[0004] The aforementioned flap gate still has certain defects:

[0005] Although the aforementioned flap gate provides a more stable and uniform stress distribution and a secure and safe support connection, effectively coping with the impact of water pressure, it still has shortcomings in practical applications. There is an unsealed gap between the bottom of the gate panel and the dam foundation, and the bottom of the gate panel lacks a dedicated sealing structure. This design flaw allows debris such as mud, sand, and branches to easily intrude into the gap between the bottom of the gate panel and the dam foundation. Over time, this accumulation of debris can lead to severe mud and sand buildup and obstruction, directly causing the gate to malfunction and jam during opening and closing, thus affecting its normal use. Summary of the Invention

[0006] In view of the shortcomings of existing technologies, this invention provides a flood control device for water conservancy projects, which makes the gate opening and closing smoother and less prone to being blocked by debris.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flood control device for water conservancy projects, comprising a gate plate and a hydraulic telescopic mechanism installed between the riverbed and the embankment. A support block is fixedly connected to the riverbed, and a rotating block is rotatably connected to the upper end of the support block. The end of the rotating block away from the support block is fixedly connected to the gate plate. A hydraulic telescopic mechanism is provided on the side of the support block away from the gate plate. The lower end of the hydraulic telescopic mechanism is installed on the riverbed, and the upper end of the hydraulic telescopic mechanism is installed on the gate plate. A sliding groove is provided on the side wall of the embankment, and a slider is slidably connected inside the sliding groove. A water-blocking plate is provided on the side of the gate plate away from the support block. A slot matching the water-blocking plate is provided at the top of the riverbed. A drainage trough is provided on the riverbed near the gate plate. A sewage trough is provided at the top of the riverbed. One end of the sewage trough is connected to the slot, and the other end of the sewage trough is connected to the drainage trough. The water-blocking plate is installed between two sliders. A pressing mechanism is connected to the middle position of the side of the gate plate near the water-blocking plate.

[0008] The pressing mechanism includes a limiting block, a limiting plate, a second threaded post, a movable plate, a connecting plate, and a second nut. The limiting block is located on both sides of the gate plate and is fixedly connected to the gate plate. The limiting plate is slidably connected to the limiting block. The movable plate is located between the two limiting plates. The top of the movable plate is fixedly connected to the connecting plate. The second threaded post is fixedly connected to the top of the limiting plate near the movable plate. The upper end of the second threaded post passes through the connecting plate and extends to the upper end of the connecting plate. The second nut is threadedly connected to the second threaded post. A stop block is fixedly connected to the upper end of the baffle plate near the gate plate.

[0009] Furthermore, a positioning block is fixedly connected to the side of the slider near the water-blocking plate. Both ends of the water-blocking plate are provided with positioning grooves that match the positioning blocks. An installation groove is provided at the upper end of the water-blocking plate, and the installation groove is connected to the positioning groove. A first threaded post is fixedly connected to the top of the positioning block. A first nut is threadedly connected to the upper end of the first threaded post. The first nut is located inside the installation groove. An elastic sealing plug is slidably connected to the upper end of the installation groove. A handle is fixedly connected to the top of the elastic sealing plug.

[0010] Furthermore, multiple sets of fixing grooves are provided at the lower end of the gate plate near the support block. Fixing blocks are slidably connected inside the fixing grooves. Pressure plates are fixedly connected to the side walls of the fixing blocks. Third threaded columns are slidably connected to both ends of the pressure plates. Third nuts are threadedly connected to the upper ends of the third threaded columns. A horizontal plate is fixedly connected to the middle position of the water-blocking plate near the gate plate.

[0011] Furthermore, a sealing gasket is provided between the pressure plate and the gate plate, the bottom of the sealing gasket abuts against the bottom of the drainage channel, and the sealing gasket is mainly made of elastic material.

[0012] Furthermore, a baffle is provided between the rotating blocks, one end of the baffle is fixedly connected to the gate plate, and the other end of the baffle abuts against the support block.

[0013] Furthermore, the hydraulic telescopic mechanism is provided with partitions on both sides, one end of the partition is fixedly connected to the support block, and the bottom of the partition is fixed to the riverbed.

[0014] A method for using a flood control device in a water conservancy project includes the following steps:

[0015] Step 1: When storing water, first activate the hydraulic telescopic mechanism to change the gate plate from a horizontal state to a vertical state. During the conversion process, the baffle plate is pressed down by the pressing mechanism so that the lower end of the baffle plate is inserted into the slot.

[0016] Step 2: When the gate plate is in a vertical position, the gate plate, the baffle plate, and the pressing mechanism form a whole, which isolates the river channel formed by the riverbed and the embankment, thereby achieving the effect of water storage.

[0017] Step 3: During flood discharge, activate the hydraulic telescopic mechanism to change the gate plate from a vertical state to a horizontal state. During the conversion, the pressing mechanism separates from the baffle plate and no longer restricts the baffle plate. At the same time, during the rotation of the gate plate, the pressure plate will abut against the horizontal plate, thereby lifting the baffle plate and creating a drainage gap between the baffle plate and the riverbed to facilitate the discharge of silt.

[0018] Step 4: During the flood discharge process, baffles and barriers will protect the hydraulic telescopic mechanism to prevent debris from entering the mechanism and causing it to jam and become difficult to operate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This flood control device for water conservancy projects consists of a gate plate and a baffle plate forming a composite partition structure. When storing water, the lower end of the baffle plate is inserted into the slot at the bottom of the river through a pressing mechanism. With the help of an elastic sealing gasket, the water flow in the river is effectively blocked, solving the problem of leakage at the bottom gap of traditional gates. At the same time, slots, sewage channels, and drainage channels are set at the bottom of the river. When discharging floodwater, the drainage gap created after the baffle plate is lifted can guide mud, sand, branches and other debris into the drainage channel for discharge through the sewage channel, avoiding the jamming caused by the accumulation of debris at the bottom of traditional gates.

[0021] 2. This flood control device for water conservancy projects has a water-blocking plate that is inserted into the positioning groove of the slider through a positioning block, and is fixed with the first threaded column and nut. The installation groove design facilitates tool operation, and the elastic sealing plug is removable, so the gate does not need to be completely disassembled during maintenance.

[0022] 3. This flood control device for water conservancy projects has partitions on both sides of the hydraulic telescopic mechanism and baffles between the rotating blocks, which can prevent debris carried by floods from entering the mechanism, avoid jamming or wear of parts, and improve the stability of equipment operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a left view of the entire invention;

[0025] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0026] Figure 4 This is a schematic diagram of the overall open state of the present invention;

[0027] Figure 5 This is a left view of the entire invention in the open state;

[0028] Figure 6 This is a partial cross-sectional view of the gate plate of the present invention;

[0029] Figure 7 This is a left view of the gate plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the connection structure between the gate plate and the support block of the present invention;

[0031] Figure 9 This is a schematic diagram of the connection structure between the gate plate and the movable plate of the present invention;

[0032] Figure 10 This is a bottom view of the gate plate of the present invention;

[0033] Figure 11 This is a schematic diagram of the connection structure between the gate plate and the pressure plate of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of the pressure plate of the present invention;

[0035] Figure 13 This is a schematic diagram of the riverbed structure of the present invention;

[0036] Figure 14 This is a schematic diagram of the connection structure between the slider and the water-blocking plate of the present invention.

[0037] In the diagram: 1. Riverbed; 2. Embankment; 201. Slide chute; 3. Slot; 4. Sewage chute; 5. Drainage chute; 6. Support block; 7. Hydraulic telescopic mechanism; 8. Gate plate; 9. Baffle; 10. Rotating block; 11. Sliding block; 12. Positioning block; 13. First threaded post; 14. Water-blocking plate; 15. Positioning slot; 16. Installation slot; 17. First nut; 18. Elastic sealing plug; 19. Handle; 20. Horizontal plate; 21. Stop block; 22. Limiting block; 23. Limiting plate; 24. Second threaded post; 25. Movable plate; 26. Connecting plate; 27. Second nut; 28. Fixing slot; 29. ​​Sealing pad; 30. Pressure plate; 31. Fixing block; 32. Third threaded post; 33. Third nut; 34. Partition plate. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Please see Figures 1 to 14 A flood control device for water conservancy projects includes a gate plate 8 installed between a riverbed 1 and a dam 2, and a hydraulic telescopic mechanism 7. A support block 6 is fixedly connected to the riverbed 1, and a rotating block 10 is rotatably connected to the upper end of the support block 6. The end of the rotating block 10 away from the support block 6 is fixedly connected to the gate plate 8. The hydraulic telescopic mechanism 7 is provided on the side of the support block 6 away from the gate plate 8. The lower end of the hydraulic telescopic mechanism 7 is installed on the riverbed 1, and the upper end of the hydraulic telescopic mechanism 7 is installed on the gate plate 8. A sliding groove 2 is provided on the side wall of the dam 2. 01. The sliding block 11 is slidably connected inside the chute 201. A water-blocking plate 14 is provided on the side of the gate plate 8 away from the support block 6. A slot 3 matching the water-blocking plate 14 is opened at the top of the riverbed 1. A drainage trough 5 is opened at the position of the riverbed 1 near the gate plate 8. A sewage trough 4 is opened at the top of the riverbed 1. One end of the sewage trough 4 is connected to the slot 3, and the other end of the sewage trough 4 is connected to the drainage trough 5. The water-blocking plate 14 is installed between the two sliding blocks 11. A pressing mechanism is connected to the middle position of the side of the gate plate 8 near the water-blocking plate 14.

[0040] like Figures 1 to 14 As shown, a method for using a flood control device for water conservancy projects includes the following steps:

[0041] Step 1: When storing water, first activate the hydraulic telescopic mechanism 7 to change the gate plate 8 from a horizontal state to a vertical state. During the conversion process, the pressure mechanism presses down the baffle plate 14 so that the lower end of the baffle plate 14 is inserted into the slot 3.

[0042] Step 2: When the gate plate 8 is in a vertical position, the gate plate 8, the water-blocking plate 14 and the pressing mechanism form a whole, which isolates the river channel formed by the riverbed 1 and the embankment 2, thereby achieving the effect of water storage.

[0043] Step 3: During flood discharge, the hydraulic telescopic mechanism 7 is activated to change the gate plate 8 from a vertical state to a horizontal state. During the conversion, the pressing mechanism separates from the baffle plate 14 and no longer restricts the baffle plate 14. At the same time, during the flipping of the gate plate 8, the pressure plate 30 will abut against the horizontal plate 20, thereby lifting the baffle plate 14 and creating a drainage gap between the baffle plate 14 and the riverbed 1 to facilitate the discharge of mud, sand and other debris.

[0044] Step 4: During the flood discharge process, the baffle 34 and the baffle 9 will protect the hydraulic telescopic mechanism 7 to prevent debris from entering the hydraulic telescopic mechanism 7 and causing it to jam and have difficulty operating.

[0045] The flood control device for water conservancy projects of this invention, during operation, uses a hydraulic telescopic mechanism 7 to drive the gate plate 8 to rotate around the support block 6 via the rotating block 10 to achieve state switching. During the water storage stage, the hydraulic telescopic mechanism 7 pushes the gate plate 8 from horizontal to vertical. During this process, the pressing mechanism on the gate plate 8 simultaneously presses down the water-blocking plate 14, causing its lower end to insert into the slot 3 at the bottom of the river, forming a river channel barrier in conjunction with the elastic sealing gasket 29. During the flood discharge stage, the hydraulic telescopic mechanism 7 pulls the gate plate 8 back to horizontal, the pressing mechanism separates from the water-blocking plate 14, and when the gate plate 8 flips, the pressure plate 30 pushes against the water-blocking plate. The horizontal plate 20 of plate 14 lifts the water-blocking plate 14 from the slot 3. At this time, the mud, sand and other debris in the slot 3 are discharged into the drainage channel 5 through the connected sewage channel 4 and eventually flow into the downstream of the river. At the same time, the baffle 9 between the partition plate 34 on both sides of the hydraulic telescopic mechanism 7 and the rotating block 10 prevents debris from entering, realizing the coordinated operation of safe flood discharge and automatic silt removal. In addition, the structure of the gate plate 8 and the hydraulic telescopic mechanism 7 in this invention is similar to the prior art, which discloses a flap gate structure for water conservancy projects in the patent with patent authorization announcement number CN219410774U, so it will not be described in detail here.

[0046] As a preferred embodiment of the present invention, a positioning block 12 is fixedly connected to the side of the slider 11 near the water-blocking plate 14. Both ends of the water-blocking plate 14 are provided with positioning grooves 15 that match the positioning block 12. An installation groove 16 is provided at the upper end of the water-blocking plate 14. The installation groove 16 is connected to the positioning groove 15. A first threaded post 13 is fixedly connected to the top of the positioning block 12. A first nut 17 is threadedly connected to the upper end of the first threaded post 13. The first nut 17 is located inside the installation groove 16. An elastic sealing plug 18 is slidably connected to the upper end of the installation groove 16. A handle 19 is fixedly connected to the top of the elastic sealing plug 18.

[0047] Specifically, when installing the baffle plate 14, firstly, the positioning grooves 15 at both ends of the baffle plate 14 are inserted into the positioning blocks 12 on the slider 11, so that the first threaded post 13 on the top of the positioning block 12 passes through the positioning groove 15 and enters the installation groove 16. Then, the first nut 17 in the installation groove 16 is tightened to complete the fixation. Finally, the elastic sealing plug 18 is slid into the installation groove 16 to achieve a seal. The precise matching between the positioning block 12 and the positioning groove 15 improves the stability of the baffle plate 14 installation. The threaded connection combined with the hidden installation groove 16 design enhances the water pressure resistance of the connection structure. The elastic sealing plug 18 can effectively prevent water and mud from entering the positioning block 12 and the threaded assembly. The handle 19 is designed to facilitate quick disassembly of the elastic sealing plug 18 for maintenance in the later stage.

[0048] As a preferred embodiment of the present invention, the pressing mechanism includes a limiting block 22, a limiting plate 23, a second threaded post 24, a movable plate 25, a connecting plate 26, and a second nut 27. The limiting block 22 is located on both sides of the gate plate 8 and is fixedly connected to the gate plate 8. The limiting plate 23 is slidably connected to the limiting block 22. The movable plate 25 is located between the two limiting plates 23. The top of the movable plate 25 is fixedly connected to the connecting plate 26. The second threaded post 24 is fixedly connected to the top of the limiting plate 23 near the movable plate 25. The upper end of the second threaded post 24 passes through the connecting plate 26 and extends to the upper end of the connecting plate 26. The second nut 27 is threadedly connected to the second threaded post 24. A stop block 21 is fixedly connected to the upper end of the water-blocking plate 14 near the gate plate 8.

[0049] Specifically, the pressing mechanism is fixed to the gate plate 8 by the limiting block 22, the limiting plate 23 slides along the limiting block 22, and the movable plate 25 is located between the two limiting plates 23 and is connected to the second threaded post 24 and the second nut 27 through the connecting plate 26. During the process of the gate plate 8 changing from horizontal to vertical during water storage, the movable plate 25 moves down with the limiting plate 23 and presses down the stop block 21 on the water-blocking plate 14, so that the lower end of the water-blocking plate 14 is inserted into the slot 3 of the river bottom 1. Through the self-adaptive tight fit between the water-blocking plate 14 and the slot 3, the leakage problem caused by the lack of active pressing sealing structure in the traditional gate plate 8 is solved. At the same time, the rigid contact between the stop block 21 and the movable plate 25 can prevent the water-blocking plate 14 from shifting when the water pressure is too high, thereby improving the sealing stability and flood control reliability.

[0050] As a preferred technical solution of the present invention, a plurality of fixing grooves 28 are provided at the lower end of the gate plate 8 near the support block 6. A fixing block 31 is slidably connected inside the fixing groove 28. A pressure plate 30 is fixedly connected to the side wall of the fixing block 31. A third threaded post 32 is slidably connected to both ends of the pressure plate 30. A third nut 33 is threadedly connected to the upper end of the third threaded post 32. A horizontal plate 20 is fixedly connected to the middle position of the water-blocking plate 14 near the gate plate 8.

[0051] Specifically, a pressure plate 30 is installed at the lower end of the gate plate 8 near the support block 6 via a fixing groove 28 and a fixing block 31. During flood discharge, the gate plate 8 changes from vertical to horizontal. During the flipping process, the pressure plate 30 rotates with the gate plate 8 and abuts against the horizontal plate 20, thereby lifting the water-blocking plate 14 from the slot 3 at the riverbed 1. This allows the mud and other debris in the slot 3 to be discharged into the drainage channel 5 through the sewage channel 4 and eventually flow into the downstream of the river. This prevents the long-term accumulation of mud and sand in the slot 3, which would reduce the water-blocking effect of the water-blocking plate 14 and prevent leakage or opening / closing failure.

[0052] As a preferred technical solution of the present invention, a sealing gasket 29 is provided between the pressure plate 30 and the gate plate 8, the bottom of the sealing gasket 29 abuts against the bottom of the drainage groove 5, and the sealing gasket 29 is mainly made of elastic material.

[0053] Specifically, a sealing gasket 29 made of elastic material is provided between the pressure plate 30 on the side of the gate plate 8 near the support block 6 and the gate plate 8. When the gate plate 8 is in a vertical state during the water storage stage, the bottom of the sealing gasket 29 is tightly pressed against the bottom of the drainage channel 5. The elasticity of the material is used to achieve a dynamic seal between the bottom of the gate plate 8 and the drainage channel 5, thus preventing leakage.

[0054] As a preferred technical solution of the present invention, a baffle 9 is provided between the rotating blocks 10. One end of the baffle 9 is fixedly connected to the gate plate 8, and the other end of the baffle 9 abuts against the support block 6.

[0055] As a preferred technical solution of the present invention, the hydraulic telescopic mechanism 7 is provided with partitions 34 on both sides, one end of the partition 34 is fixedly connected to the support block 6, and the bottom of the partition 34 is fixed on the riverbed 1.

[0056] Specifically, one end of the baffle 9 between the rotating blocks 10 is fixedly connected to the gate plate 8, and the other end abuts against the support block 6, maintaining close contact with the support block 6 as the gate plate 8 rotates; one end of the partition 34 on both sides of the hydraulic telescopic mechanism 7 is fixed to the support block 6, and the bottom of the partition 34 is fixed to the riverbed 1, forming a protective barrier around the hydraulic components; during the opening and closing of the gate plate 8, the baffle 9 physically prevents mud, sand, branches and other debris from entering the gap between the rotating block 10 and the support block 6, while the partition 34 prevents debris from intruding into the operating space of the hydraulic telescopic mechanism 7; this solves the opening and closing failure caused by debris jamming in the rotating part of the traditional flap gate, and reduces the impact and wear of water flow on the rotating mechanism; at the same time, the partition 34 avoids problems such as oil leakage or jamming caused by the corrosion of hydraulic components by debris, improves the operational stability of the flood control device, reduces the maintenance frequency, extends the service life of the equipment, and simplifies daily cleaning needs.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A flood control device for water conservancy projects, comprising a gate plate (8) installed at the midpoint between the riverbed (1) and the embankment (2) and a hydraulic telescopic mechanism (7), characterized in that, A support block (6) is fixedly connected to the riverbed (1). A rotating block (10) is rotatably connected to the upper end of the support block (6). The end of the rotating block (10) away from the support block (6) is fixedly connected to the gate plate (8). A hydraulic telescopic mechanism (7) is provided on the side of the support block (6) away from the gate plate (8). The lower end of the hydraulic telescopic mechanism (7) is installed on the riverbed (1), and the upper end of the hydraulic telescopic mechanism (7) is installed on the gate plate (8). A sliding groove (201) is opened on the side wall of the embankment (2). A slider (11) is slidably connected inside the sliding groove (201). A water-blocking plate (14) is provided on the side of the gate panel (8) away from the support block (6). A slot (3) matching the water-blocking plate (14) is provided on the top of the riverbed (1). A drainage trough (5) is provided on the riverbed (1) near the gate panel (8). A sewage trough (4) is provided on the top of the riverbed (1). One end of the sewage trough (4) is connected to the slot (3), and the other end of the sewage trough (4) is connected to the drainage trough (5). The water-blocking plate (14) is installed between two sliders (11). A pressing mechanism is connected to the middle position of the side of the gate panel (8) near the water-blocking plate (14). The pressing mechanism includes a limiting block (22), a limiting plate (23), a second threaded post (24), a movable plate (25), a connecting plate (26), and a second nut (27). The limiting block (22) is located on both sides of the gate plate (8) and is fixedly connected to the gate plate (8). The limiting plate (23) is slidably connected to the limiting block (22). The movable plate (25) is located between the two limiting plates (23). The top of the movable plate (25) is fixedly connected to the connecting plate (26). The second threaded post (24) is fixedly connected to the top of the limiting plate (23) near the movable plate (25). The upper end of the second threaded post (24) passes through the connecting plate (26) and extends to the upper end of the connecting plate (26). The second nut (27) is threadedly connected to the second threaded post (24). The upper end of the water-blocking plate (14) is fixedly connected to the side of the gate plate (8) near the gate plate (8). A stop block (21) is fixedly connected to the side of the water-blocking plate (14) near the gate plate (8).

2. A flood control device for water conservancy projects according to claim 1, characterized in that, The slider (11) is fixedly connected to a positioning block (12) on the side near the water-blocking plate (14). Both ends of the water-blocking plate (14) are provided with positioning grooves (15) that match the positioning block (12). The upper end of the water-blocking plate (14) is provided with an installation groove (16). The installation groove (16) is connected to the positioning groove (15). The top of the positioning block (12) is fixedly connected to a first threaded post (13). The upper end of the first threaded post (13) is threadedly connected to a first nut (17). The first nut (17) is located inside the installation groove (16). The upper end of the installation groove (16) is slidably connected to an elastic sealing plug (18). The top of the elastic sealing plug (18) is fixedly connected to a handle (19).

3. A flood control device for water conservancy projects according to claim 2, characterized in that, The gate plate (8) has multiple sets of fixing grooves (28) at the lower end near the support block (6). The fixing groove (28) is slidably connected to a fixing block (31). The side wall of the fixing block (31) is fixedly connected to a pressure plate (30). Both ends of the pressure plate (30) are slidably connected to a third threaded column (32). The upper end of the third threaded column (32) is threadedly connected to a third nut (33). The water-blocking plate (14) is fixedly connected to a horizontal plate (20) at the middle position near the gate plate (8).

4. A flood control device for water conservancy projects according to claim 3, characterized in that, A sealing gasket (29) is provided between the pressure plate (30) and the gate plate (8). The bottom of the sealing gasket (29) abuts against the bottom of the drainage trough (5). The sealing gasket (29) is mainly made of elastic material.

5. A flood control device for water conservancy projects according to claim 4, characterized in that, A baffle (9) is provided between the rotating blocks (10). One end of the baffle (9) is fixedly connected to the gate plate (8), and the other end of the baffle (9) abuts against the support block (6).

6. A flood control device for water conservancy projects according to claim 5, characterized in that, The hydraulic telescopic mechanism (7) has partitions (34) on both sides. One end of the partition (34) is fixedly connected to the support block (6), and the bottom of the partition (34) is fixed on the riverbed (1).

7. The method of using a flood control device for water conservancy projects according to claim 6, characterized in that, Includes the following steps: Step 1: When storing water, first start the hydraulic telescopic mechanism (7) to change the gate plate (8) from a horizontal state to a vertical state. During the conversion process, the water baffle (14) is pressed down by the pressing mechanism so that the lower end of the water baffle (14) is inserted into the slot (3). Step 2: When the gate plate (8) is in a vertical state, the gate plate (8), the water-blocking plate (14) and the pressing mechanism form a whole, which isolates the river channel formed by the riverbed (1) and the embankment (2) to achieve the effect of water storage. Step 3: During flood discharge, the hydraulic telescopic mechanism (7) is activated to change the gate plate (8) from a vertical state to a horizontal state. During the conversion, the pressing mechanism separates from the baffle plate (14) and no longer restricts the baffle plate (14). At the same time, during the flipping of the gate plate (8), the pressure plate (30) will abut against the horizontal plate (20), thereby lifting the baffle plate (14) and creating a drainage gap between the baffle plate (14) and the riverbed (1) to facilitate the discharge of silt. Step 4: During the flood discharge process, the baffle (34) and the baffle (9) will protect the hydraulic telescopic mechanism (7) to prevent debris from entering the hydraulic telescopic mechanism (7) and causing it to jam and become difficult to operate.

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