A vertical inclined flood control irrigation dam and construction method thereof

Abstract

The present invention discloses a vertical inclined flood control irrigation dam and its construction method. The dam comprises: a river channel base, dam walls fixed on both sides of the river channel base, a water channel formed between the river channel base and the dam walls on both sides, and a plurality of positioning hooks arranged on the river channel base; a plurality of anchors fixed on an anchor platform; a movable water retaining plate pivotally connected to the water channel, a water inlet formed on the dam wall upstream of the movable water retaining plate, a water diversion channel connected to farmland provided on the outer side of the dam wall, and the water inlet diverts water from the water channel into the diversion channel; a plurality of water retaining plate pivoting wires fixed at intervals above and below the back surface of the movable water retaining plate, the water retaining plate pivoting wires passing through the threading tubes on the dam wall and connected to the corresponding anchors. When the river flow is low, the movable water retaining plate is raised. When a major flood strikes, the movable water retaining plate is promptly released to be level with the riverbed platform to allow the flood to pass smoothly. When the flood recedes, the water retaining plate is raised to continue irrigating the farmland.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy projects, and in particular relates to a vertical inclined flood control irrigation dam and a construction method thereof. Background Art

[0002] Using rivers to irrigate paddy fields fully utilizes water resources. In Northeast China, vast tracts of farmland lie along the banks of rivers. Every few kilometers along a river, a dam is needed to irrigate the fields. However, existing dams are not effective long-term. Some require repeated repairs throughout the spring, summer, and autumn, draining the village's resources.

[0003] Problems with existing traditionally constructed dams:

[0004] 1. The dam length, width and depth of the foundation platform are not enough. The platform built with rubble, mortar and cement is not solid, the solidification is not strong and there are holes.

[0005] 2. The stone retaining wall built on the dam foundation platform does not rise from the root of the foundation. An isolation layer is formed between the foundation platform surface and the stone retaining wall, which cannot withstand the impact of a large flood.

[0006] 3. Because the height difference between the stone retaining wall and the river banks on both sides is very small, when it rains continuously in July and August, the water levels of rivers and streams rise sharply. The flood washes away the fillings on the upper side of the vertical stone retaining wall. Since the vertical stone retaining wall cannot tilt, it cannot withstand the erosion of the flood and the dam is destroyed.

[0007] 4. Because the stone retaining wall is soaked in half water and half leaking all year round, it will crack when it encounters freezing damage in winter, causing the dam to be destroyed when floods come.

[0008] Therefore, how to provide a vertical inclined flood control irrigation dam and a construction method thereof is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0009] In view of this, the present invention provides a vertical inclined flood control irrigation dam and a construction method thereof, which can intercept water for irrigation when the water flow is small, and ensure the smooth passage of flood when flood occurs, thereby reducing the impact of flood on the dam body.

[0010] In order to achieve the above object, the present invention adopts the following technical solution: a vertical inclined flood control irrigation dam, comprising:

[0011] A river channel base, with dam walls fixed on both sides of the river channel base, a water channel is formed between the river channel base and the dam walls on both sides, and a plurality of positioning hooks are linearly arranged on the river channel base;

[0012] Anchoring platforms, there are two groups of anchoring platforms located on both sides of the water channel, and a plurality of anchoring pieces are fixed on the anchoring platforms;

[0013] A movable water baffle is flipped and connected to the water channel. A water inlet is opened on the dam wall upstream of the movable water baffle. A water diversion channel connected to farmland is provided on the outside of the dam wall. The water inlet diverts water in the water channel into the water diversion channel.

[0014] The water baffle flipping pull wire has multiple parts and is connected to the back water surface of the movable water baffle at intervals up and down. The water baffle flipping pull wire passes through the threading tube on the dam wall and is connected to the anchor at the corresponding end. A tensioner is connected between the water baffle flipping pull wire and the anchor. The water baffle flipping pull wire on the bottom side of the movable water baffle is connected to the positioning hook and is used to limit the flipping position of the movable water baffle.

[0015] The beneficial effects of the present invention are as follows: a riverbed is constructed in the riverbed, which serves as the foundation platform of the dam body. An anchoring platform is used to provide an anchoring foundation for controlling the flipping of a movable water baffle. The looseness of the water baffle flipping cable allows the movable water baffle to have different flipping angles, thereby achieving different functions of water blocking and water flow. Specifically, the flipping position of the movable water baffle needs to be achieved by a positioning hook on the riverbed, thereby ensuring the stable flipping of the movable water baffle and preventing it from shifting due to the impact of the water flow. The present invention is adjusted for use according to the amount of water used. When the river flow is small, the movable water baffle is raised. When a major flood hits, the movable water baffle is promptly released to be level with the riverbed to allow the flood to pass smoothly. When the flood recedes, the water baffle is raised to continue irrigating the fields for the people.

[0016] Preferably, the riverbed and the dam wall are cast in one piece, and a reef buffer zone for buffering the flood flow rate is provided on the riverbed downstream of the movable water retaining plate.

[0017] The resulting technical effect is that the riverbed and the dam wall are cast as one piece, the structure is highly stable and not easily damaged, and the reef buffer zone can reduce the flow rate of the flood when it comes, thereby reducing the impact of the flood on the dam body.

[0018] Preferably, there are multiple groups of positioning hooks fixed at intervals on the river channel base, and the positioning hooks are chicken claw hooks.

[0019] The resulting technical effect is: the positioning hook is used to locate the position of the movable water baffle, thereby ensuring its reliable working process, and the chicken claw hook has multiple claws, thereby increasing the limiting points of the bottom side water baffle flipping pull line.

[0020] Preferably, there are multiple threading tubes on the dam wall and they are arranged at intervals up and down. The number of threading tubes on the dam wall corresponds to the number of water retaining plate flip pull lines. One end of the threading tube is flared, and the flared end of the threading tube is close to one side of the water channel. The flared end on the threading tube is an asymmetric oblique trumpet mouth, and the long oblique side of the oblique trumpet mouth is close to the downstream of the water flow. A rubber water plug is fixed near the oblique trumpet mouth of the water retaining plate flip pull line. When the water retaining plate flip pull line is tightened, the rubber water plug seals the threading tube and prevents the water source inside the water channel from leaking out.

[0021] The resulting technical effect is: the threading tube provides a wall-penetrating foundation for the water retaining plate flipping pull wire, thereby establishing a connection relationship between the water retaining plate flipping pull wire and the anchor on the anchor platform. In addition, one end of the threading tube is designed with an oblique bell mouth, which is convenient for the oil wire rope to slip and prevents the oil wire rope from being rubbed against the rubberized outer skin when the tensioner is used to tighten the wire, thereby affecting the service life of the oil wire rope. Due to the setting of the oblique bell mouth, when vertically obliquely blocking water, when rapids flood the dam, it can also play a role in buffering the oil wire rope and the water retaining plate. It should be noted that the water blocking of the present invention is not water blocking in the full sense, but rather raises the upstream water level to a certain extent, thereby realizing water diversion to farmland.

[0022] Preferably, the anchoring platform is a concrete platform, the anchor is a wire fixing bottom ring, the water baffle flipping wire is an oil wire rope, the two ends of the oil wire rope are forked to form a ring, and the hooks at both ends of the tensioner are respectively connected to the ring and the wire fixing bottom ring on the corresponding side. An operating room is provided on the anchoring platform, and the anchor and tensioner are located in the operating room.

[0023] The resulting technical effect is: the anchor is a bottom ring for fixing the pull wire, the purpose of which is to provide a basis for pulling the water baffle flipping pull wire. Specifically, a tensioner is used to adjust the tightness of the entire water baffle flipping pull wire. It should be noted that since there are multiple water baffle flipping pull wires, the tightness of different water baffle flipping pull wires needs to be adjusted accordingly according to usage. The tensioner can be a manual tensioner or an electric tensioner, and can be selected according to needs. The operating room can meet the needs of multiple people operating, avoiding water immersion of anchors and tensioning equipment, and the operating room also provides installation space for subsequent electronic equipment.

[0024] Preferably, both ends of the movable water baffle extend to the dam wall on the corresponding side, and the movable water baffle includes a water-facing surface plywood, a rubber lining and a water-receiving surface plywood, and the water-facing surface plywood, the rubber lining and the water-receiving surface plywood are fixedly connected by plywood screws, and a plurality of hanging line noses are arranged on the water-receiving surface plywood, and the hanging line noses on the plurality of water-receiving surface plywood are arranged in rows, and the water baffle flipping pull line is passed through the hanging line noses in the corresponding row.

[0025] The resulting technical effect is: even if the movable water baffle is raised, it is impossible to avoid complete water blocking. A small amount of water will leak from the edge of the movable water baffle. This is an acceptable situation. Of course, the leakage amount must be smaller than the upstream water flow, thereby ensuring that the upstream water level rises and achieving the purpose of water diversion. Flow-stabilizing blocks are set at the corners of the downstream position where the water baffle is flipped.

[0026] The present invention also discloses a method for constructing a vertical inclined flood control irrigation dam, which comprises the following steps:

[0027] Step 1: Site selection: Choose a shallow river section above the irrigation field, with naturally high terrain;

[0028] Step 2: Foundation construction: dig a channel for the channel bed in the river channel, and ensure that the length of the channel bed corresponding to the water retaining surface is greater than the width of the river channel. The depth of the channel bed is determined according to different terrain and water storage capacity on the dam.

[0029] Step 3: The dam body is formed by pouring dam walls on both sides of the riverbed, opening water inlets on the dam walls, setting anchorage platforms on both sides of the riverbed, and pre-embedding multiple anchors on the anchorage platforms;

[0030] Step 4: Install the movable water baffle. Pass the water baffle flip cable through the hanging line nose on the back water surface of the movable water baffle. The water baffle flip cable on the bottom side is connected to multiple positioning hooks on the water channel and defines the flip axis of the movable water baffle. The multiple water baffle flip cables on the upper side pass through the threading tube on the dam wall and are connected to the anchor. Adjust the tension of the tensioner between the water baffle flip cable and the anchor to adjust the flip angle of the movable water baffle.

[0031] Step 5: Use the movable water baffle. When the water flow in the river is small, pull up the movable water baffle to block the water flow, raise the water level upstream, and divert irrigation water to the farmland through the water inlet. When the water flow in the river is large and a flood occurs, lay the movable water baffle flat and clear the water flow. At this time, the gate at the water inlet is closed to allow the flood to pass safely.

[0032] The beneficial effects of the present invention are: suitable site selection ensures that the irrigation field can be irrigated. The present invention can adjust the use according to the usage and river water conditions by flipping and adjusting the movable water baffle, thereby ensuring the irrigation effect and preventing the risk of dam collapse.

[0033] Preferably, in step 1, the terrain on both sides of the river channel is flat, the river section is straight, the drainage is smooth, and the discharged water will not impact the river banks on both sides.

[0034] The resulting technical effect is: the terrain on both sides of the river is flat and the river section is straight, the purpose of which is to ensure that the water flow will not impact the river banks on both sides during drainage.

[0035] Preferably, in step three, a reinforcing rib is fixed between the anchoring platform and the dam wall, the reinforcing rib is inclined toward the upstream side of the water flow, the anchors on the anchoring platform are staggered, and the number of the anchors on each end anchoring platform corresponds to the number of water retaining plate flip tension lines.

[0036] The resulting technical effect is: the anchor platform and the dam wall are connected by reinforcing ribs, and the reinforcing ribs are arranged obliquely to form an integral structure with strong stability, which can improve the base's ability to resist water flow impact. The staggered distribution of anchors can avoid concentrated force and make the force more uniform. Both ends of each water retaining plate flipping cable are connected to the anchor on the anchor platform through a tensioner.

[0037] Preferably, in step 4, a pipe hole adapted to the shape of a threading pipe is pre-opened on the dam wall, the threading pipe is arranged close to the upstream of the water head, and the threading pipes on the dam wall are arranged obliquely and staggered from top to bottom.

[0038] The resulting technical effect is: the purpose of arranging the threading pipe close to the upstream of the water head is to adjust the installation position of the water retaining plate, so that the force point of the water retaining plate is advanced, thereby reducing the impact of the water body on the structure. The threading pipe is arranged obliquely from top to bottom, so that the water retaining plate is tilted when it is in the water-blocking state, reducing the impact load of the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The overall structure of a vertical inclined flood control irrigation dam of the present invention Figure 1 ;

[0040] Figure 2 The overall structure of a vertical inclined flood control irrigation dam of the present invention Figure 2 ;

[0041] Figure 3 This is a diagram showing the movable water retaining plate of a vertical inclined flood control irrigation dam according to the present invention in cooperation with the water retaining plate flipping pull line;

[0042] Figure 4 This is a structural diagram of a tensioner for a vertical inclined flood control irrigation dam according to the present invention;

[0043] Figure 5 This is an application diagram of a vertical inclined flood control irrigation dam with an operating room according to the present invention;

[0044] Figure 6 This is a structural diagram of a movable water retaining plate of a vertical inclined flood control irrigation dam of the present invention;

[0045] Figure 7 This is a schematic diagram of the water-facing and water-receiving side plywood of a vertical inclined flood control irrigation dam of the present invention;

[0046] Figure 8This is a cross-sectional view of the water channel of a vertical inclined flood control irrigation dam according to the present invention.

[0047] 1. River channel base, 2. Dam wall, 3. Positioning hook, 4. Anchor platform, 5. Anchor, 6. Movable water retaining plate, 61. Water-facing surface splint, 62. Rubber lining, 63. Back-water surface splint, 7. Water inlet, 8. Water retaining plate flipping wire, 9. Tensioner, 10. Reef buffer zone, 11. Threading tube, 111. Oblique bell mouth, 12. Hanging nose, 13. Reinforcement rib. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See the attached Figures 1 to 8 According to an embodiment of the present invention, a vertical inclined flood control irrigation dam comprises:

[0050] A river channel base 1 is provided with dam walls 2 fixed on both sides of the river channel base 1. A water channel is formed between the river channel base 1 and the dam walls 2 on both sides. A plurality of positioning hooks 3 are linearly arranged at intervals on the river channel base 1. It is understood that the plurality of positioning hooks arranged at intervals are in a straight line.

[0051] Anchoring platforms 4, there are two groups of anchoring platforms 4 and are located on both sides of the water channel. A plurality of anchoring pieces 5 are fixed on the anchoring platforms 4;

[0052] The movable water retaining plate 6 is flipped and connected to the water channel. The dam wall 2 is provided with a water inlet 7 upstream of the movable water retaining plate 6. The outer side of the dam wall 2 is provided with a water diversion channel connected to the farmland. The water inlet 7 diverts the water flow in the water channel into the water diversion channel to achieve irrigation of the farmland.

[0053] The water baffle flip pull line 8 has multiple water baffle flip pull lines 8 and is arranged at intervals up and down on the back water surface of the movable water baffle 6. The water baffle flip pull line 8 passes through the threading tube 11 on the dam wall 2 and is connected to the anchor 5 at the corresponding end. A tensioner 9 is connected between the water baffle flip pull line 8 and the anchor 5. The tensioner has a variety of options, which can be a manual tensioner or a manual chain hoist. Where there is a power supply, it can be an electric tensioner, a battery-driven tensioner, a hydraulic tensioner, a gear-engaging transmission shaft tensioner. It can also be an intelligent remote control, remote operation and tensioning, etc. The arrangement is selected according to actual needs. The water baffle flip pull line at the bottom edge of the movable water baffle 6 is connected to the positioning hook 3 and is used to limit the flipping position of the movable water baffle 6 to avoid displacement of the movable water baffle.

[0054] In other embodiments, the riverbed 1 and the dam wall 2 are cast as one piece, and a reef buffer zone 10 for buffering the flood flow rate is provided on the riverbed 1 downstream of the movable water retaining plate 6 .

[0055] In some other embodiments, there are multiple groups of positioning hooks 3 fixed on the riverbed 1 at intervals of 1 m. The positioning hooks 3 are chicken claw hooks. The multiple claws of the chicken claw hooks increase the connection points, making the flipping of the movable water retaining plate more stable. The specific structure shall be subject to the actual product.

[0056] In some other specific embodiments, a plurality of threading tubes 11 are arranged on the dam wall 2 from top to bottom, and one end of the threading tube 11 is flared, and the flared end of the threading tube 11 is close to one side of the water channel. The flared end on the threading tube 11 is an asymmetric oblique trumpet mouth 111, and the long oblique side of the oblique trumpet mouth 111 is close to the downstream of the water flow. A rubber water plug is fixed near the oblique trumpet mouth of the water baffle flipping pull wire 8. When in the upright and oblique state, when the water baffle flipping pull wire 8 is tightened, the rubber water plug moves and blocks the threading tube 11, thereby preventing the water source inside the water channel from entering the operating room. The threading tube provides a wall penetration foundation for the water baffle flipping pull wire. The threading tube 11 at the top is close to the upstream of the water head, which ensures the inclined state of the water baffle when it is raised, and also reduces the impact of the water body on the overall structure. When pulling the wire, due to the setting of the oblique trumpet mouth of the threading tube, the degree of wear of the rubber coating of the oil wire rope can be reduced.

[0057] In other embodiments, the anchoring platform 4 is a concrete platform, the anchor 5 is a wire fixing bottom ring, and the water baffle flipping wire 8 is an oil wire rope. The oil wire rope has good anti-rust effect and is not easy to break. The two ends of the oil wire rope are forked to form a ring, and the hooks at both ends of the tensioner 9 are respectively connected to the ring and the wire fixing bottom ring on the corresponding side. An operating room is provided on the anchoring platform 4, and the anchor 5 and the tensioner 9 are located in the operating room. Specifically, the operating room is composed of a water-resistant board wall enclosure and a rainproof shed, which is waterproof and rainproof to ensure that the tensioning equipment and anchors are not soaked in water. The operating room has emergency operation space for less than 4 people to ensure future modification and installation of an automatic intelligent remote control equipment platform.

[0058] In some other specific embodiments, both ends of the movable water baffle 6 extend to the dam wall 2 on the corresponding side. The movable water baffle 6 includes a water-facing surface plywood 61, a rubber lining 62 and a water-receiving surface plywood 63. The water-facing surface plywood 61, the rubber lining 62 and the water-receiving surface plywood 63 are fixedly connected by plywood screws. The plywood screws should be made of stainless steel and treated with oil seal wax to prevent rust caused by long-term immersion in water. A plurality of hanging line noses 12 are arranged on the water-receiving surface plywood, at least three groups, one group on the top edge, one group in the middle, and one group on the bottom edge. The hanging line noses on the plurality of water-receiving surface plywood are arranged in rows. The water baffle flipping pull line 8 is passed through the hanging line nose 12 of the corresponding row, and the flipping state of the movable water baffle is controlled by the tightness of the water baffle flipping pull line.

[0059] It should be noted that there are actually many ways to implement the movable water baffle, and it is not limited to one or two situations shown in the drawings. It only needs to meet the need to raise the water level in the upright and inclined state, and no excessive requirements are made here.

[0060] The present invention also discloses a method for constructing a vertical inclined flood control irrigation dam, which comprises the following steps:

[0061] Step 1: Site selection: Choose a shallow river section above the irrigation field, with naturally high terrain;

[0062] Step 2: Build the foundation. Dig a casting trough for the riverbed in the river channel, and ensure that the length of the riverbed corresponding to the water retaining surface is greater than the width of the river channel. The depth of the riverbed is determined according to the different terrain and the water storage capacity of the dam. Taking a 50-meter river width as an example, the foundation is dug for 80 meters, the width of the dam base is 10-15 meters, and the depth of the dam base is determined according to the different terrain and the water storage capacity of the dam. It is based on measurement and is generally 1.5-2 meters. 15 meters at each end of the dam foundation is the anchoring platform pit for burying the guy wire. It should be appropriately deepened, and the guy wire pit should be tilted upwards to prevent pressure from being generated when the dam is filled with water.

[0063] Step 3: The dam body is formed by pouring dam walls on both sides of the riverbed, opening water inlets on the dam walls, setting anchorage platforms on both sides of the riverbed, and pre-embedded multiple anchors on the anchorage platforms; one anchor is staggered every 2.5 meters, and the number of anchors at each end of the dam head is set according to the number of guy wires;

[0064] The positioning hooks on the riverbed are calculated based on the dam foundation length, with one ring hook pointing upwards for every meter. The specific implementation is subject to the actual layout and use;

[0065] Step 4: Install the movable water baffle. Pass the water baffle flip cable through the hanging line nose on the back water surface of the movable water baffle. The water baffle flip cable on the bottom side is connected to multiple positioning hooks on the water channel and defines the flip axis of the movable water baffle. The multiple water baffle flip cables on the upper side pass through the threading tube on the dam wall and are connected to the anchor. Adjust the tension of the tensioner between the water baffle flip cable and the anchor to adjust the flip angle of the movable water baffle.

[0066] The length and height of the movable water retaining plate should be determined according to the length of the dam. The height standard is the horizontal plane of the riverbed platform, which is level with the bottom of the water inlet channel. The pull line for the water retaining plate should be made of oil wire rope, and its specifications should meet the requirements of dam foundation length, thickness and tensile strength.

[0067] Step 5: Use the movable water baffle. When the water flow in the river is small, pull up the movable water baffle to block the water flow, raise the water level upstream, and divert irrigation water to the farmland through the water inlet. When the water flow in the river is large and a flood occurs, lay the movable water baffle flat and clear the water flow. At this time, the gate at the water inlet is closed to allow the flood to pass safely.

[0068] In step one, the terrain on both sides of the river is flat, the river section is straight, the drainage is smooth, and the discharged water will not impact the river banks on both sides.

[0069] In step three, a reinforcing rib 13 is fixed between the anchoring platform 4 and the dam wall 2. The anchors on the anchoring platform 4 are staggered. The number of the anchors on each end of the anchoring platform corresponds to the number of the water retaining plate flip tension lines.

[0070] In step 4, the threading pipes 11 are arranged close to the upstream of the water head, and the threading pipes on the dam wall are arranged obliquely and staggered from top to bottom.

[0071] An operating room can also be set up at the anchoring platforms at both ends, where various special operating tools are kept.

[0072] Installation process:

[0073] When installing the movable water retaining plate, first thread the first oil wire rope underneath the movable water retaining plate, then pass the two ends of the oil wire rope through the threading tube through the dam wall. Then, connect the two ends of the oil wire rope ring to the tensioner hook. Then, connect the other end of the tensioner hook to the two ends of the cable fixing ring. Then, use the manual tensioner to lightly and simply fix the first oil wire rope as the first axis. Then, use a steel fiber to move the first axis to the platform chicken claw bottom ring hook, and then tighten the first axis to secure it. Then, connect the second and third oil wire ropes to the hanging nose and similarly pass through the dam wall to connect to the tensioner. The other end of the tensioner hook is connected to the cable fixing ring to secure it.

[0074] After all the oil wire ropes are threaded, dedicated personnel will be trained to conduct commissioning drills and carry out maintenance and repairs. Their use will be adjusted according to water consumption. When the river flow is low, the movable water retaining plate will be raised. When a major flood is approaching, the movable water retaining plate will be promptly lowered to the level of the riverbed platform to allow the flood to pass smoothly. When the flood recedes, the water retaining plate will be raised to continue irrigating the fields.

[0075] As for the devices and methods of use disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the methods.

[0076] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vertical inclined flood control irrigation dam, characterized in that: include: A river channel base (1), dam walls (2) are fixed on both sides of the river channel base (1), a water channel is formed between the river channel base (1) and the dam walls (2) on both sides, and a plurality of positioning hooks (3) are linearly arranged on the river channel base (1); Anchoring platforms (4), the anchoring platforms (4) having two groups and located on two outer sides of the water channel, and a plurality of anchoring pieces (5) fixed on the anchoring platforms (4); A movable water baffle (6), the movable water baffle (6) is flipped and connected to the water channel, the dam wall (2) is provided with a water inlet (7) upstream of the movable water baffle (6), the outer side of the dam wall (2) is provided with a water diversion channel connected to the farmland, the water inlet (7) diverts the water flow in the water channel into the water diversion channel, both ends of the movable water baffle (6) extend to the dam wall (2) on the corresponding side, the movable water baffle (6) includes a water-facing surface splint (61), a rubber lining (62) and a water-receiving surface splint (63), the water-facing surface splint (61), the rubber lining (62) and the water-receiving surface splint (63) are fixedly connected by splint screws, a plurality of hanging line noses (12) are arranged on the water-receiving surface splint (63), the hanging line noses on the plurality of water-receiving surface splints are arranged in a row, and the water baffle flipping pull line (8) is passed through the hanging line noses (12) in the corresponding row; A water baffle flip pull line (8) is provided. The water baffle flip pull lines (8) are arranged in a plurality of rows and spaced apart on the back surface of the movable water baffle (6). The water baffle flip pull lines (8) pass through a threading tube (11) on the dam wall (2) and are connected to the anchor (5) at the corresponding end. A tensioner (9) is connected between the water baffle flip pull line (8) and the anchor (5). The water baffle flip pull line at the bottom edge of the movable water baffle (6) is connected to a positioning hook (3) and is used to limit the flip position of the movable water baffle (6).

2. The vertical inclined flood control irrigation dam according to claim 1, characterized in that: The river channel base (1) and the dam wall (2) are cast in one piece, and a reef buffer zone (10) for buffering flood flow rate is provided on the river channel base (1) downstream of the movable water retaining plate (6).

3. The vertical inclined flood control irrigation dam according to claim 1, characterized in that: The positioning hooks (3) are in multiple groups and fixed at intervals on the riverbed (1); the positioning hooks (3) are chicken claw hooks.

4. The vertical inclined flood control irrigation dam according to claim 1, characterized in that: There are a plurality of threading tubes (11) on the dam wall (2) and they are arranged at intervals in the upper and lower parts. The number of threading tubes on the dam wall corresponds to the number of water retaining plate flipping pull wires (8). One end of the threading tube (11) is expanded. The expanded end of the threading tube (11) is close to one side of the water channel. The expanded end on the threading tube (11) is an asymmetric oblique trumpet mouth. The long oblique side of the oblique trumpet mouth is close to the downstream of the water flow. A rubber water plug is fixed near the oblique trumpet mouth of the water retaining plate flipping pull wire (8). When the water retaining plate flipping pull wire (8) is tightened, the rubber water plug seals the threading tube (11) and prevents the water source inside the water channel from leaking out.

5. The vertical inclined flood control irrigation dam according to claim 1, characterized in that: The anchoring platform (4) is a concrete platform, the anchoring piece (5) is a bottom ring for fixing a tension wire, the water baffle flipping tension wire (8) is an oil wire rope, the two ends of the oil wire rope are forked to form a ring, the hooks at both ends of the tensioner (9) are respectively connected to the ring and the bottom ring for fixing a tension wire on the corresponding side, and an operating room is provided on the anchoring platform (4), and the anchoring piece (5) and the tensioner (9) are located in the operating room.

6. A method for constructing a vertical inclined flood control irrigation dam according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Site selection: Choose a shallow river section above the irrigation field, with naturally high terrain; Step 2: Foundation construction: dig a channel for the channel bed in the river channel, and ensure that the length of the channel bed corresponding to the water retaining surface is greater than the width of the river channel. The depth of the channel bed is determined according to different terrain and water storage capacity on the dam. Step 3: The dam body is formed by pouring dam walls on both sides of the riverbed, opening water inlets on the dam walls, setting anchorage platforms on both sides of the riverbed, and pre-embedding multiple anchors on the anchorage platforms; Step 4: Install the movable water baffle. Pass the water baffle flip cable through the hanging line nose on the back water surface of the movable water baffle. The water baffle flip cable on the bottom side is connected to multiple positioning hooks on the water channel and defines the flip axis of the movable water baffle. The multiple water baffle flip cables on the upper side pass through the threading tube on the dam wall and are connected to the anchor. Adjust the tension of the tensioner between the water baffle flip cable and the anchor to adjust the flip angle of the movable water baffle. Step 5: Use the movable water baffle. When the water flow in the river is small, pull up the movable water baffle to block the water flow, raise the water level upstream, and divert irrigation water to the farmland through the water inlet. When the water flow in the river is large and a flood occurs, lay the movable water baffle flat and clear the water flow. At this time, the gate at the water inlet is closed to allow the flood to pass safely.

7. The method for constructing a vertical inclined flood control irrigation dam according to claim 6, characterized in that: In the step three, a reinforcing rib (13) is fixed between the anchoring platform (4) and the dam wall (2), the reinforcing rib (13) is inclined toward the upstream side of the water flow, the anchoring pieces on the anchoring platform (4) are staggered, and the number of the anchoring pieces on each end anchoring platform corresponds to the number of the water retaining plate flip tension lines.

8. The method for constructing a vertical inclined flood control irrigation dam according to claim 6, characterized in that: In the step 4, a pipe hole adapted to the shape of the threading pipe is pre-opened on the dam wall, the threading pipe (11) is arranged close to the upstream of the water head, and the threading pipes on the dam wall are arranged staggered from top to bottom.

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