A drainage shutter for a dike construction and a construction method thereof

Abstract

The application provides a drainage gate for embankment engineering and a construction method thereof. The drainage gate comprises a gate body and a gate, a drainage port is arranged on the gate body, vertical sliding grooves are arranged on the inner walls on both sides of the drainage port, the gate is arranged in the sliding grooves, and a filtering device is further arranged. The filtering device comprises a sliding cylinder and a sliding plate. One side of the top of the sliding cylinder is abutted against the bottom of the gate body, the sliding cylinder is provided with a sliding cavity with an open top, the sliding plate is movably inserted into the sliding cavity, the top of the sliding plate is connected with the gate, and a plurality of residue filtering holes are arranged on the sliding plate along the water flow direction. The application can avoid the situation that stones, branches and other large foreign matters flow into the bottom of the drainage port by adding the filtering device on the basis of the original drainage gate, so that the function of the drainage gate in flood control, tide control or water level rising in the upstream is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of embankment engineering equipment, in particular to a drainage gate for embankment engineering and a construction method thereof. BACKGROUND

[0002] The drainage gate is a low-head hydraulic structure built on the river and channel to control the flow and regulate the water level by the gate. Closing the gate can block the flood, tide or raise the upstream water level to meet the needs of irrigation, power generation, navigation, aquaculture, environmental protection, industrial and domestic water, etc. Opening the gate can discharge the flood, waterlogging, abandoned water or waste water, and also can supply water to the downstream river or channel. In water conservancy engineering, the water gate is widely used as a building for retaining, discharging or taking water.

[0003] In the prior art, a drainage gate for water conservancy and hydropower embankment engineering is disclosed in the patent with the publication number CN218263762U, which includes a gate body, a slide rail fixedly connected to the inner wall of the gate body, and a gate slidingly connected in the slide rail. In this drainage gate, the gate body has a drainage port, and the gate is installed in the drainage port and can move up and down. During implementation, the height position of the gate in the drainage port is changed to control whether the water in the dam can be discharged through the drainage port and the flow rate when the water in the dam is discharged through the drainage port, thereby playing the role of water storage, flood control, tide control or raising the upstream water level. However, there are usually a large number of stones and branches in the water of the river dam. The above-mentioned drainage gate structure is too simple, and the water flow may carry part of the stones or branches and other large debris when passing through the drainage port and be stuck in the drainage port. When the gate is lowered to close the drainage port, the stones or branches and other large debris will be blocked, making it difficult for the water gate to completely close the drainage port, and thus greatly affecting the effect of the drainage gate on flood control, tide control or raising the upstream water level.

[0004] In view of the problem that the stones or branches and other large debris will be blocked when passing through the drainage port, a drainage gate for water conservancy embankment engineering is disclosed in the patent with the publication number CN216973331U. The filter screen is welded to the lower position of the front of the external frame. When the water flow goes downstream, the impurities in the water flow need to be filtered and intercepted by the filter screen, and the impurities are limited in the upstream area.

[0005] However, in actual use, impurities are easily adsorbed on the filter screen, which easily causes the filter screen to be blocked. In CN216973331U, a double-shaft motor is used to drive the two winding discs on both sides to rotate, the hanging rope is wound to drive the garbage collection assembly to move upward, and then the scraper is used to scrape and clean the filter screen when moving upward. Therefore, in the drainage gate of CN216973331U, the cleaning of the filter screen cannot be completed synchronously with the lifting of the gate, and an additional mechanism is required for cleaning, that is, a double-shaft motor is required to drive the garbage collection assembly to move upward and then drive the scraper to clean the filter screen. The structure is complex and the operation is troublesome. SUMMARY

[0006] The main purpose of the present application is to provide a drainage gate for dike engineering and a construction method thereof, aiming to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, on the one hand, the present application provides a drainage gate for dike engineering, which comprises a gate body and a gate, a drainage port is arranged on the gate body, vertical sliding grooves are arranged on the inner walls on both sides of the drainage port, the two sides of the gate are arranged in the sliding grooves, and a filter device is further arranged, wherein the filter device comprises a sliding cylinder and a sliding plate; one side of the top of the sliding cylinder abuts against the bottom of the gate body, the sliding cylinder is provided with a sliding cavity with an open top, the sliding plate is movably inserted into the sliding cavity, the top of the sliding plate is connected with the gate, and a plurality of residue filtering holes are arranged on the sliding plate along the water flow direction.

[0008] Preferably, the filter device is arranged at a lower position on the upstream side of the gate body, and the downstream side surface of the sliding plate abuts against the upstream side surface of the gate body.

[0009] Preferably, the length of the sliding plate is greater than or equal to the depth of the sliding cavity, and the depth of the sliding cavity is greater than the height of the gate.

[0010] Preferably, the sliding plate and the gate are connected through a connecting seat, the connecting seat is arranged at a lower position on the upstream side surface of the gate, the two end surfaces of the connecting seat are in sliding contact with the inner wall surfaces on both sides of the drainage port, and the upstream side surface of the connecting seat abuts against the downstream side surface of the sliding plate.

[0011] Preferably, the connecting seat and the gate are connected through bolts, and the connecting seat and the sliding plate are connected through bolts.

[0012] Preferably, a sand discharge seat is arranged on the bottom of the gate body, a residue discharge groove is arranged on the top of the sand discharge seat, the top of the residue discharge groove is in communication with the drainage port, a residue discharge hole is arranged on the downstream side surface of the sand discharge seat close to the bottom position, and the residue discharge hole is in communication with the residue discharge groove.

[0013] Preferably, the bottom surface of the slag discharge groove is provided with an inclined surface which is inclined downward from the upstream side to the downstream side.

[0014] Preferably, the lower end of the gate is inserted into the slag discharge groove, and a rubber pad is arranged on the inner wall of the slag discharge groove.

[0015] On the other hand, the application also provides a construction method of the drainage gate for the dike engineering, comprising the following steps:

[0016] S1: design the installation position of the gate body while designing the dike construction drawing;

[0017] S2: open an installation groove for installing the sliding cylinder at the installation position before the construction of the dike;

[0018] S3: place the sliding cylinder in the installation groove and fill the gap between the sliding cylinder and the installation groove with cement, after the cement is dry, place the gate body on the top of the sliding cylinder, and weld the sliding cylinder and the gate body into an integral whole, and then construct the dike according to the dike construction drawing;

[0019] S4: after the construction of the dike is completed, assemble the sliding plate into the sliding cavity of the sliding cylinder, assemble the gate onto the drainage opening of the gate body, and finally connect the top of the sliding plate to the gate.

[0020] Preferably, in step S3, before constructing the dike according to the dike construction drawing, a cover plate for closing the sliding cavity is laid on the sliding cylinder, and the cover plate is detachably connected to the sliding cylinder through bolts.

[0021] Due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0022] (1) The application avoids the occurrence of the situation that stones, branches and other larger foreign matters flow into the bottom of the drainage opening by adding the filtering device on the basis of the original drainage gate, so that the drainage opening can be completely closed by the gate, thereby guaranteeing the functions of the drainage gate, such as flood control, tide control or raising the upstream water level.

[0023] (2) In the present application, the sliding plate in the filter device is movably inserted into the sliding cavity, and the top of the sliding plate is connected with the gate. When the gate moves, the sliding plate also moves, and the sliding plate has a plurality of filter residue holes opened along the water flow direction, which serves as a channel for the water body to pass through and filters large foreign matters in the water body. When the gate moves downward, the sliding plate also moves downward, and the inner cavity of the sliding cylinder scrapes off the dirt and impurities on the surface of the sliding plate. Therefore, the filter device in the present application can scrape off and clean the dirt and impurities attached to the sliding plate during the closing of the gate, without the need for other additional mechanisms to operate, and has a simple structure and convenient operation.

[0024] (3) In the present application, the filter device is arranged at the lower position on the upstream side of the gate body, and the downstream surface of the sliding plate abuts against the upstream surface of the gate body. When the gate drives the sliding plate to move upward, the filter residue holes of the sliding plate are exposed to the sliding cavity, and at this time, the water on the upstream can pass through the filter residue holes and pass through the gap between the bottom wall of the drain outlet and the gate. In this process, the water body is filtered, and the large foreign matters such as stones and branches carried in the water body are blocked. After the flood discharge, irrigation or lowering of the upstream water level is completed, the bottom of the drain outlet will not have large foreign matters such as stones and branches, so that the gate moves downward to close, and the gate and the bottom of the drain outlet can abut more closely.

[0025] (4) In the present application, the sand discharge seat is arranged at the bottom of the gate body, and the small foreign matters remaining on the bottom wall of the drain outlet after passing through the filter residue holes can enter the residue discharge groove and be discharged from the residue discharge hole, so as to ensure the sealing property of the gate bottom and the bottom wall of the drain outlet after the gate is closed. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of the drawings shown.

[0027] Figure 1 is a front view of the drainage gate plate for the dike engineering provided by the present application;

[0028] Figure 2 is Figure 1 is a sectional view of B-B in the figure;

[0029] Figure 3 is Figure 2 is an enlarged schematic view of the structure at A in the figure;

[0030] Figure 4 Fig. 1 is a schematic view of the present application.

[0031] BRIEF DESCRIPTION OF DRAWINGS 1, gate body; 11, drainage opening; 12, chute; 2, gate; 3, filtering device; 31, sliding cylinder; 32, sliding plate; 33, sliding cavity; 34, filter residue hole; 4, connecting seat; 5, sand discharge seat; 51, residue discharge groove; 52, residue discharge hole; 6, rubber pad; 7, cover plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the embodiments in the present application are within the scope of protection of the present application.

[0033] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0034] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms “set”, “install”, “connect”, “connect” appear, they should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Embodiment 1:

[0036] Please refer to Figure 1 , Figure 2As shown, the dam engineering drainage flap provided by the embodiment is installed on a dam for drainage, and comprises a gate body 1 and a gate 2. The gate body 1 is provided with a drainage opening 11, and the gate 2 is movably installed in the drainage opening 11. The gate body 1 and the gate 2 are not described in detail herein as prior art. Specifically, the dam engineering drainage flap disclosed in the embodiment further comprises a filtering device 3. The filtering device 3 is used for filtering out large foreign matters in water when the dam engineering drainage flap is used for drainage. Specifically, the filtering device 3 comprises a sliding cylinder 31 and a sliding plate 32. The top side of the sliding cylinder 31 abuts against the bottom of the gate body 1. The sliding cylinder 31 is provided with a top open sliding cavity 33. The sliding plate 32 is movably inserted into the sliding cavity 33. The top of the sliding plate 32 is connected with the gate 2. A plurality of filter holes 34 are formed in the sliding plate 32 along the water flow direction. The filter holes 34 are used as channels for water to pass through and are used for filtering large foreign matters in water. In order to avoid impurities and foreign matters from entering the area between the gate 2 and the bottom wall of the drainage opening 11, the filtering device 3 is arranged at the lower position on the upstream side of the gate body 1. The downstream side surface of the sliding plate 32 abuts against the upstream side surface of the gate body 1. Since the downstream side surface of the sliding plate 32 abuts against the upstream side surface of the gate body 1, impurities and foreign matters can be prevented from entering the gap between the sliding plate 32 and the gate body 1. Since the sliding plate 32 is arranged on the upstream side of the gate body 1, the sliding plate 32 can be tightly attached to the upstream side surface of the gate body 1 under the impact of water flow, thereby further preventing impurities and foreign matters from entering. Specifically, in the embodiment, the side of the sliding cavity 33 close to the gate body 1 is on the same vertical line as the side of the gate body 1 close to the sliding cavity 33. After the sliding plate 32 is inserted into the sliding cavity 33, the part of the sliding plate 32 extending out of the sliding cavity 33 and close to the gate body 1 can abut against the gate body 1, so that no channel for large foreign matters in water to pass through is formed between the sliding plate 32 and the gate body 1.

[0037] In use, when flood discharge, irrigation or lowering of the upstream water level is needed, the gate 2 closed in the drainage opening 11 of the gate body 1 is moved upward, so that a gap for water to pass through is formed between the bottom wall of the drainage opening 11 and the bottom surface of the gate 2. A lifting device can be assembled on the top of the gate body 1 to move the gate 2 upward or downward, which is not described in detail herein as prior art. When water storage, flood retention, tide blocking or raising of the upstream water level is needed, the gate 2 is moved downward, so that the gap for water to pass through formed between the bottom wall of the drainage opening 11 and the bottom surface of the gate 2 is closed.

[0038] Specifically, when flood discharge, irrigation or lowering the upstream water level is needed, in the process of moving the gate 2 upward, the gate 2 drives the sliding plate 32 to move upward in the sliding cavity 33 of the sliding cylinder 31, so that the filter hole 34 of the sliding plate 32 is exposed to the sliding cavity 33, at this time, the water upstream can pass through the filter hole 34 through the gap between the drain outlet 11 and the gate 2, in this process, the water is filtered, and the larger foreign matters such as stones and branches carried in the water are blocked, and then after the flood discharge, irrigation or lowering the upstream water level is completed, the bottom of the drain outlet 11 will not have larger foreign matters such as stones and branches, and then when the gate 2 moves downward to close the gap between the bottom wall of the drain outlet 11 and the bottom surface of the gate 2, the bottom surface of the gate 2 and the bottom wall of the drain outlet 11 can be abutted more tightly, wherein the smaller foreign matters at the bottom of the drain outlet 11 are crushed by the gravity of the gate 2 or the force when the gate 2 moves downward, and the closing quality of the gate 2 to close the drain outlet 11 is not affected or the effect is small and can be ignored. When the gate 2 moves downward, the sliding plate 32 also moves downward with the gate 2, at this time, the inner cavity opening of the sliding cylinder 31 plays a scraping effect on the surface of the sliding plate 32. Therefore, by adopting the filtering device in the application, the dirt and impurities attached to the sliding plate 32 can be scraped and cleaned in the process of closing the gate 2, without the need for other additional mechanisms to operate, and the structure is simple and convenient to operate.

[0039] The application avoids the situation that larger foreign matters such as stones and branches flow into the bottom of the drain outlet 11 by adding the filtering device 3 on the basis of the original drainage gate, so that the bottom wall of the drain outlet 11 can be completely closed by the gate 2, and the effect of the drainage gate on flood control, tide control or raising the upstream water level is guaranteed.

[0040] In the embodiment, the length of the sliding plate 32 is greater than or equal to the depth of the sliding cavity 33, and after the sliding plate 32 is assembled into the sliding cavity 33, the top of the sliding plate 32 is ensured to extend out of the sliding cavity 33, and then the top of the sliding plate 32 is conveniently connected to the gate 2. Further, the depth of the sliding cavity 33 is greater than the height of the gate 2, and then when the gate 2 is moved to the highest position in the drain outlet 11, the bottom of the sliding plate 32 is still ensured to be in the sliding cavity 33, and then the water filtering quality of the filtering device 3 is guaranteed.

[0041] Embodiment 2:

[0042] On the basis of embodiment 1, vertical sliding grooves 12 are formed on the inner walls on both sides of the drain outlet 11, and the two sides of the gate 2 are arranged in the sliding grooves 12, that is, the gate 2 can slide up and down in the sliding grooves 12. Considering that in this connection mode, there is a gap between the upstream side surface of the gate 2 and the upstream side surface of the gate body 1, in order to ensure that the connection between the gate 2 and the sliding plate 32 is not affected by the above gap, the sliding grooves 12 are combined with the sliding plate 32 to form a sliding cavity 33, and the sliding plate 32 is arranged in the sliding cavity 33. Figure 2As shown, the sliding plate 32 is connected with the gate 2 through the connecting seat 4, the connecting seat 4 is located at the lower position of the upstream side surface of the gate 2, the two end surfaces of the connecting seat 4 are in sliding contact with the two side inner wall surfaces of the drain port 11, the connecting seat 4 avoids the formation of a gap between the connecting seat 4 and the two side inner wall surfaces of the drain port 11, which allows impurities to enter, and the upstream side surface of the connecting seat 4 abuts against the downstream side surface of the sliding plate 32. In this connecting structure connected to the connecting seat 4, the connecting seat 4 also plays a role of sealing the gap between the gate 2 and the sliding plate 32, so that the sliding plate 32 and the gate 2 cannot form a channel for large foreign matters in the water supply body to pass through.

[0043] As a preferred scheme of the above embodiment, the connecting seat 4 is connected with the gate 2 and the sliding plate 32 through bolts.

[0044] As a preferred scheme of the above embodiment, when the gate 2 closes the drain port 11, in order to reduce the influence of small foreign matters at the bottom of the drain port 11 on the closing quality of the gate 2 closing the drain port 11, in combination with Figure 2 、 Figure 3 As shown, a deslagging seat 5 is arranged at the bottom of the gate body 1; a deslagging groove 51 is arranged at the top of the deslagging seat 5, the top of the deslagging groove 51 is communicated with the drain port 11, a deslagging hole 52 is arranged at the downstream side surface of the deslagging seat 5 close to the bottom position, and the deslagging hole 52 is communicated to the deslagging groove 51. In order to facilitate the discharge of foreign matters in the deslagging groove 51, the bottom surface of the deslagging groove 51 is arranged as an inclined surface, which is inclined downward from the upstream side to the downstream side.

[0045] By adopting the above structure, small foreign matters staying on the bottom wall of the drain port 11 enter the deslagging groove 51 through the deslagging hole 34, and due to the inclined surface at the bottom of the deslagging groove 51, the small foreign matters in the deslagging groove 51 slide to the side with lower horizontal height, and since the deslagging hole 52 is arranged at the side with lower horizontal height, the small foreign matters in the deslagging groove 51 can be automatically discharged. In the specific use process, when the gate 2 moves downward to close the gap between the bottom wall of the drain port 11 and the bottom surface of the gate 2, since there is no small foreign matter in the deslagging groove 51, the gate 2 and the drain port 11 can be abutted more closely, thereby ensuring the closing quality of the gate 2 closing the drain port 11.

[0046] As a preferred scheme of the above embodiment, the lower end of the gate 2 can be inserted into the deslagging groove 51, and a rubber pad 6 is arranged on the inner wall of the deslagging groove 51. After the gate 2 is inserted into the deslagging groove 51 at the bottom, the rubber pad 6 arranged in the deslagging groove 51 makes the gate 2 and the deslagging groove 51 abut more closely, thereby further ensuring the closing quality of the gate 2 closing the drain port 11.

[0047] Embodiment 3:

[0048] The embodiment discloses a construction method of the drainage shutter plate for the dike engineering in the embodiment 1, and comprises the following steps.

[0049] S1: design the installation position of the shutter body 1 while designing the dike construction drawing;

[0050] S2: open the installation groove for installing the sliding cylinder 31 in the installation position before the dike construction;

[0051] S3: place the sliding cylinder 31 in the installation groove and fill the cement in the gap between the sliding cylinder 31 and the installation groove, place the shutter body 1 on the top of the sliding cylinder 31 after the cement is dry, and weld the sliding cylinder 31 and the shutter body 1 into an integral whole, and then construct the dike according to the dike construction drawing;

[0052] S4: assemble the sliding plate 32 into the sliding cavity 33 of the sliding cylinder 31 after the dike construction is completed, assemble the gate 2 on the drainage port 11 of the shutter body 1, and finally connect the top of the sliding plate 32 to the gate 2.

[0053] The construction method adopts the pre-embedded mode to complete the assembly of the drainage shutter plate for the dike engineering on the dike, so that the drainage shutter plate and the dike form an integral whole, the structure is stable, and the service life of the shutter body is greatly prolonged.

[0054] As a preferred scheme of the above-mentioned embodiment, before the dike is constructed according to the dike construction drawing in step S3, in order to avoid the foreign matters in the sliding cavity 33 on the sliding cylinder 31 from affecting the installation quality of the sliding plate 32, a cover plate 7 for closing the sliding cavity 33 is arranged on the sliding cylinder 31, the cover plate 7 is detachably connected with the sliding cylinder 31 through bolts, the sliding cavity 33 is closed through the arranged cover plate 7 when the dike is constructed, so that the foreign matters are prevented from entering the sliding cavity 33, and the cover plate 7 is detached from the sliding cylinder 31 after the dike construction is completed. Figure 4

[0055] In conclusion, the embodiment of the present application provides a drainage shutter plate for the dike engineering, the structure of the original drainage shutter plate is improved, the added filter device 3 is used to avoid the occurrence of the situation that the stones, branches and other larger foreign matters flow into the bottom wall of the drainage port 11, and it is ensured that the drainage port 11 can be completely closed by the gate 2; the construction method makes the drainage shutter plate for the dike engineering adopt the pre-embedded mode to complete the assembly when the dike is constructed, so that the drainage shutter plate and the dike form an integral whole, the structure is stable, and the service life of the shutter body 1 is greatly prolonged.

[0056] ​The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural changes made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A drainage gate for dike engineering, comprising a gate body (1) and a gate (2), wherein a drainage outlet (11) is provided on the gate body (1), and vertical grooves (12) are provided on the inner walls on both sides of the drainage outlet (11), and the two sides of the gate (2) are placed in the grooves (12), characterized in that: Further comprising a filtering device (3), The filtering device (3) comprises a sliding cylinder (31) and a sliding plate (32); the top side of the sliding cylinder (31) abuts against the bottom of the gate body (1), the sliding cylinder (31) is provided with a top open sliding cavity (33), the sliding plate (32) is movably inserted into the sliding cavity (33), and the top of the sliding plate (32) is connected with the gate (2); a plurality of residue filtering holes (34) are formed on the sliding plate (32) along the water flow direction. The filtering device (3) is arranged at a lower position on the upstream side of the gate body (1), and the downstream side surface of the sliding plate (32) abuts against the upstream side surface of the gate body (1).

2. A drainage flap for a dike construction according to claim 1, characterized in that: The length of the sliding plate (32) is greater than or equal to the depth of the sliding cavity (33), and the depth of the sliding cavity (33) is greater than the height of the gate (2).

3. A drainage flap for use in a dike engineering according to claim 1, characterized in that: The sliding plate (32) and the gate (2) are connected through a connecting seat (4) located at a lower position on the upstream side surface of the gate (2), the two end surfaces of the connecting seat (4) are in sliding contact with the inner wall surfaces on both sides of the drainage opening (11), and the upstream side surface of the connecting seat (4) abuts against the downstream side surface of the sliding plate (32).

4. A drainage flap for a dike construction according to claim 3, characterized in that: The connecting seat (4) and the gate (2) are connected through bolts, and the connecting seat (4) and the sliding plate (32) are also connected through bolts.

5. A drainage flap for use in a dike engineering according to claim 1, characterized in that: A sand discharging seat (5) is arranged at the bottom of the gate body (1); a residue discharging groove (51) is formed at the top of the sand discharging seat (5), the top of the residue discharging groove (51) is communicated with the drainage opening (11), a residue discharging hole (52) is arranged at a lower position close to the bottom of the sand discharging seat (5), and the residue discharging hole (52) is communicated with the residue discharging groove (51).

6. A drainage flap for a dike construction according to claim 5, characterized in that: The bottom surface of the residue discharging groove (51) is arranged as an inclined surface which is inclined downward from the upstream side to the downstream side.

7. A drainage flap for a dike construction according to claim 5, characterized in that: The lower end of the gate (2) can be inserted into the residue discharging groove (51), and a rubber pad (6) is arranged on the inner wall of the residue discharging groove (51).

8. A construction method of the drainage shutter plate for the embankment work according to claim 1, characterized by, The method comprises the following steps: S1: design the installation position of the gate body (1) while designing the dam construction drawing; S2: form an installation groove for installing the sliding cylinder (31) at the installation position before dam construction; S3: place the sliding cylinder (31) in the installation groove, fill the gap between the sliding cylinder (31) and the installation groove with cement, place the gate body (1) on the top of the sliding cylinder (31) after the cement is dry, and weld the sliding cylinder (31) and the gate body (1) into one body, then construct the dam according to the dam construction drawing; S4: after the dam construction is completed, assemble the sliding plate (32) into the sliding cavity (33) of the sliding cylinder (31), assemble the gate (2) onto the drainage opening (11) of the gate body (1), and finally connect the top of the sliding plate (32) to the gate (2).

9. The construction method of a drainage shutter plate for a dike work according to claim 8, characterized by: In step S3, before the embankment is constructed according to the embankment construction drawing, a cover plate (7) for closing the sliding cavity (33) is laid on the sliding cylinder (31), and the cover plate (7) is detachably connected with the sliding cylinder (31) through bolts.

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