A plugging device for dam breach and cofferdam closure

Abstract

The present invention relates to the technical field of dam breach plugging, and specifically to a plugging device for dam breaches and cofferdam closures, comprising a connecting cross bar, one side of which is movably connected to a positioning mechanism, a connecting groove being provided in the upper end of the connecting cross bar, a water bag plugging mechanism being fixedly installed in the connecting groove, and the connecting cross bar and the positioning mechanism being installed together, water is transported into the water bag plugging mechanism, so that the water bag plugging mechanism rises upward to plug the breach; after being injected with water, the water bag plugging mechanism moves upward and drives a protective mechanism connected thereto to move, the upper end of another protective mechanism is connected to the lower end of the protective mechanism that moves upward, and a plurality of protective mechanisms connected together follow the water bag plugging mechanism and move upward in sequence, so as to protect the surface of the water bag plugging mechanism, and prevent the water flow passing through the breach from carrying debris and causing damage to the surface of the water bag plugging mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of dam breach plugging, in particular to a plugging device for dam breach and cofferdam closure. Background Art

[0002] For example, a Chinese patent with announcement number CN207244571U discloses a sealing device for dam breach and cofferdam closure, including a flexible water bag with a water inlet and an exhaust port. The length L of the flexible water bag is greater than the width W of the dam breach. The two ends of the flexible water bag are respectively fixed at the upstream and downstream positions of the dam breach. The dam breach is sealed by water blocking. The weight of the flexible water bag after filling is utilized, and it is in a semi-floating state in the water. Under the combined force of the downstream water flow and the water flow at the breach, the flexible water bag is pushed to the dam breach.

[0003] However, the above scheme has the following shortcomings: in the above patent, water is injected into the flexible water bag to make the flexible water bag have sufficient strength, and the weight of the flexible water bag after filling is utilized, and the flexible water bag is in a semi-floating state in the water. Under the combined force of the downstream water flow and the water flow at the breach, the flexible water bag is pushed to the breach of the dam, so that the flexible water bag body completely blocks the breach of the dam, thereby achieving the sealing of the breach of the dam. However, when the dam breaches, the water flowing through the breach often carries various debris through the breach quickly, which is not conducive to the effective blocking of the breach. For a deep breach, it is often necessary to assemble multiple flexible water bags in sequence to seal the breach. Therefore, during the assembly of the flexible water bags, when the water flow passing through the breach carries debris and quickly hits the surface of the first installed flexible water bag, it may cause damage to the surface of the flexible water bag, causing the filled water in the flexible water bag to be discharged under the impact of the breach water flow, resulting in the flexible water bag being unable to seal the breach normally. For this reason, we have introduced a sealing device for dam breaches and cofferdam closures. Summary of the invention

[0004] The object of the present invention is to provide a blocking device for dam breach and cofferdam closure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A plugging device for dam breach and cofferdam closure, comprising a connecting crossbar, one side of the connecting crossbar is movably connected to a positioning mechanism, a connecting groove is provided in the upper end of the connecting crossbar, a water bag plugging mechanism is fixedly installed in the connecting groove, by installing the connecting crossbar and the positioning mechanism together, water source is transported into the water bag plugging mechanism, so that the water bag plugging mechanism rises upward to plug the breach, a plurality of connecting mechanisms are provided in the lower end of the connecting crossbar, and the upper end of another water bag plugging mechanism is connected to the connecting mechanism, so that water source can enter from one water bag plugging mechanism into another water bag plugging mechanism, a storage cavity is provided in the connecting crossbar, and the storage cavity is communicated with the connecting groove;

[0007] A plurality of protective mechanisms are provided in the storage cavity, the upper end of the protective mechanism on the left is connected to the water bag sealing mechanism, and one side of the protective mechanism on the right is fixedly connected to a plurality of push springs, and the push spring is fixedly connected to the storage cavity at one end away from the protective mechanism. After water is injected into the water bag sealing mechanism, the water bag sealing mechanism will move upward and drive the protective mechanism connected thereto to move. Under the elastic force of the push spring, the upper end of another protective mechanism is connected to the lower end of the protective mechanism that moves upward, and the water bag sealing mechanism is protected by a plurality of protective mechanisms connected together.

[0008] Preferably, the positioning mechanism includes a first positioning rod, the lower end of which is conically arranged, and the upper end of which is provided with a second positioning rod by bolts, and a T-shaped groove is provided in one side of the first positioning rod and the second positioning rod, and two T-shaped sliders are fixedly connected to one side of the connecting cross bar, and the T-shaped sliders are slidably connected in the T-shaped groove.

[0009] Preferably, the water bag sealing mechanism includes a foldable water bag, which is folded and arranged in a connecting groove, wherein the lower end of the foldable water bag is fixedly connected to the connecting groove, and the upper end of the foldable water bag is fixedly connected to a connecting plate.

[0010] Preferably, a plurality of connecting tubes are fixedly connected to the upper end of the connecting plate, the lower end of the connecting tube is connected to the folding water bag, a conical rubber ring is fixedly sleeved on the outer side of the connecting tube, a metal sheet is fixedly connected to the inside of the connecting tube, two mounting valves are fixedly connected to one side of the folding water bag, and lock holes are provided on both sides of the connecting tube.

[0011] Preferably, the connecting mechanism includes an internal threaded hole, which is opened in the lower end of the connecting cross bar, and two T-shaped limit rods are movably connected in the internal threaded hole. The lower end of the T-shaped limit rod is arranged in an arc shape, and a block is threaded in the lower end of the internal threaded hole. A U-shaped rod is provided on the upper side of the internal threaded hole, and the lower end of the U-shaped rod is fixedly connected to the connecting groove. The lower end of the U-shaped rod is fixedly connected to a conical rod, and the lower end of the conical rod extends into the internal threaded hole.

[0012] Preferably, one end of the T-shaped limit rod is slidably connected in the limit cavity, the limit cavity is opened in the connecting cross bar, a connecting spring is fixedly connected in the limit cavity, and the other end of the connecting spring is fixedly connected to the T-shaped limit rod.

[0013] Preferably, several of the protective mechanisms include a protective plate, the upper end of the protective plate is fixedly connected to a plug-in rod, both ends of the plug-in rod are provided with plug-in holes, the lower end of the protective plate is provided with a plug-in groove, both ends of the plug-in groove are fixedly connected to a locking rod, one side of the locking rod is arranged in an inclined shape, and a plug-in rod connected to the upper end of the protective plate is fixedly connected to the lower end of the connecting plate.

[0014] Preferably, one end of the locking rod is slidably connected to a storage cavity, the storage cavity is opened in the protective plate, a support spring is fixedly connected to the storage cavity, and the other end of the support spring is fixedly connected to the locking rod.

[0015] Preferably, a positioning groove is provided in the upper end of the connecting cross bar, and a clamping rod is fixedly connected to the lower end of the connecting cross bar.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by conveying water source into the water bag sealing mechanism, the water bag sealing mechanism rises upward to seal the breach, and the upper end of another water bag sealing mechanism is connected to the connecting mechanism, so that the water source can enter from one water bag sealing mechanism to another water bag sealing mechanism, and the water bag sealing mechanism will move upward after being injected with water source, and drive the protective mechanism connected to it to move, and under the elastic force of the push spring, the upper end of the other protective mechanism is connected to the lower end of the protective mechanism moving upward, and a number of protective mechanisms connected together follow the water bag sealing mechanism to move upward in turn, thereby protecting the surface of the water bag sealing mechanism, and preventing the water flow passing through the breach from carrying debris to damage the surface of the water bag sealing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the connection relationship between the connecting cross bar and the water bag blocking mechanism of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting cross bar of the present invention;

[0020] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the connection relationship between the tapered rod and the internal threaded hole of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the protective plate of the present invention;

[0023] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the connection relationship between the locking rod and the protective plate of the present invention.

[0024] In the figure: 1. connecting cross bar; 2. folding water bag; 3. connecting plate; 4. first positioning rod; 5. second positioning rod; 6. connecting pipe; 7. conical rubber ring; 8. metal sheet; 9. locking hole; 10. positioning groove; 11. clamping rod; 12. T-shaped slide groove; 13. installing valve; 14. plug-in rod; 15. protective plate; 16. plug-in groove; 17. locking rod; 18. plug-in hole; 19. connecting groove; 20. T-shaped slider; 21. U-shaped rod; 22. pushing spring; 23. storage chamber; 24. blocking block; 25. internal threaded hole; 26. conical rod; 27. connecting spring; 28. limiting chamber; 29. ​​T-shaped limiting rod; 30. supporting spring; 31. storage chamber. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-7 , the present invention provides a technical solution:

[0027] Embodiment 1:

[0028] A plugging device for dam breach and cofferdam closure, comprising a connecting cross bar 1, one side of the connecting cross bar 1 is movably connected to a positioning mechanism, a connecting groove 19 is provided in the upper end of the connecting cross bar 1, a water bag plugging mechanism is fixedly installed in the connecting groove 19, by installing the connecting cross bar 1 and the positioning mechanism together, water is transported into the water bag plugging mechanism, so that the water bag plugging mechanism rises upward to plug the breach, a plurality of connecting mechanisms are provided in the lower end of the connecting cross bar 1, when the depth of the dam breach is large, at this time, by connecting the upper end of another water bag plugging mechanism to the connecting mechanism, water can enter from one water bag plugging mechanism into another water bag plugging mechanism, and after the interconnected water bag plugging mechanisms are successively raised, the deeper dam breach is plugged, A storage chamber 23 is provided, and the storage chamber 23 is communicated with the connecting groove 19. Several protective mechanisms are provided in the storage chamber 23. The upper end of the left protective mechanism is connected to the water bag sealing mechanism, and one side of the right protective mechanism is fixedly connected to several pushing springs 22. The pushing spring 22 is fixedly connected to the storage chamber 23 at one end away from the protective mechanism. After the water source is injected, the water bag sealing mechanism will move upward and drive the protective mechanism connected to it to move. Under the elastic force of the pushing spring 22, the upper end of another protective mechanism is connected to the lower end of the protective mechanism moving upward. After the several protective mechanisms connected together rise together with the water bag sealing mechanism, the surface of the water bag sealing mechanism is protected to prevent debris in the water flow from hitting the surface of the water bag sealing mechanism, causing damage to it and affecting the sealing effect.

[0029] Embodiment 2:

[0030] On the basis of Example 1, in order to enable the two connecting cross bars 1 to move smoothly into the breach of the dam, the positioning mechanism includes a first positioning rod 4, the lower end of the first positioning rod 4 is conically arranged, and the upper end of the first positioning rod 4 is installed with a second positioning rod 5 by bolts. A T-shaped slide groove 12 is provided in one side of the first positioning rod 4 and the second positioning rod 5. Two T-shaped sliders 20 are fixedly connected to one side of the connecting cross bar 1, and the T-shaped slider 20 is slidably connected in the T-shaped slide groove 12. According to the depth of the dam, a number of second positioning rods 5 are installed at the upper end of the first positioning rod 4 by bolts. After the installation is completed, the lower end of the first positioning rod 4 is driven into the bottom of the dam, and the two T-shaped sliders 20 on one side of the connecting cross bar 1 are inserted into the T-shaped slide groove 12. By connecting the external water inlet pipe with the installation valve 13 on the lower side, connecting the water pipe used for exhaust with the installation valve 13 on the upper side, and opening all the installation valves 13, the lifting of the connecting cross bar 1 is released. At this time, the connecting cross bar 1 will move downward along the first positioning rod 4 and the second positioning rod 5;

[0031] The water bag blocking mechanism includes a foldable water bag 2, which is folded and arranged in a connecting groove 19. The lower end of the foldable water bag 2 is fixedly connected to the connecting groove 19, and the upper end of the foldable water bag 2 is fixedly connected to the connecting plate 3. Water is transported into the foldable water bag 2 by a water pump. After the foldable water bag 2 is injected with water, it will rise upward. When the foldable water bag 2 moves, it will drive the connecting plate 3 to move. A plurality of connecting pipes 6 are fixedly connected to the upper end of the connecting plate 3. The lower end of the connecting pipe 6 is connected to the foldable water bag 2. A conical rubber ring 7 is fixedly sleeved on the outer side of the connecting pipe 6. A metal sheet 8 is fixedly connected to the connecting pipe 6. Two mounting valves 13 are fixedly connected to one side of the foldable water bag 2. By connecting the external water inlet pipe to the mounting valve 13 on the lower side, the water pipe used for exhaust is connected to the mounting valve 13 on the upper side. When a plurality of connecting cross bars 1 are stacked and installed together, the water pipe used for exhaust is connected to the uppermost mounting valve 13, and the air in the foldable water bag 2 is discharged through the water pipe. Lock holes 9 are provided on both sides of the connecting pipe 6.

[0032] The connecting mechanism includes an internal threaded hole 25, which is provided in the lower end of the connecting cross bar 1. Two T-shaped limit rods 29 are movably connected in the internal threaded hole 25. The lower end of the T-shaped limit rod 29 is arranged in an arc shape. A block 24 is screwed in the lower end of the internal threaded hole 25. A U-shaped rod 21 is provided on the upper side of the internal threaded hole 25. The lower end of the U-shaped rod 21 is fixedly connected to the connecting groove 19. The lower end of the U-shaped rod 21 is fixedly connected to a cone rod 26. The lower end of the cone rod 26 extends into the internal threaded hole 25. When the connecting pipe 6 moves, the cone rod 26 connected to the lower end of the U-shaped rod 21 will puncture the metal sheet 8, so that the water source can flow in the two folding water bags 2.

[0033] One end of the T-shaped limit rod 29 is slidably connected to the limit cavity 28, and the limit cavity 28 is opened in the connecting cross bar 1. A connecting spring 27 is fixedly connected in the limit cavity 28, and the other end of the connecting spring 27 is fixedly connected to the T-shaped limit rod 29. During the insertion process, the conical rubber ring 7 connected to the outside of the connecting tube 6 will be squeezed and contracted together, and at the same time, the T-shaped limit rod 29 will be squeezed to move into the limit cavity 28, so that the connecting spring 27 is compressed. Several protective mechanisms include a protective plate 15, the upper end of the protective plate 15 is fixedly connected to the plug rod 14, and both ends of the plug rod 14 are provided with a plug hole 18, and the lower end of the protective plate 15 is provided with a plug groove 16, and both ends of the plug groove 16 are fixedly connected with a locking rod 17, and one side of the locking rod 17 is inclined. The plug-in rod 14 connected at the upper end is fixedly connected to the lower end of the connecting plate 3. Under the elastic force of the push spring 22, several protective plates 15 will be pushed to move to the left, so that the plug-in rod 14 connected to the upper end of one group of protective plates 15 moves to the plug-in slot 16 opened at the lower end of the upwardly moving protective plate 15. At this time, the locking rod 17 located in the plug-in slot 16 will be squeezed to move into the storage cavity 31. When the plug-in rod 14 completely enters the plug-in slot 16, under the elastic force of the support spring 30, the locking rod 17 will be inserted into the plug hole 18, and one end of the locking rod 17 is slidably connected to the storage cavity 31. The storage cavity 31 is opened in the protective plate 15, and a support spring 30 is fixedly connected to the storage cavity 31, and the other end of the support spring 30 is fixedly connected to the locking rod 17.

[0034] A positioning groove 10 is provided in the upper end of the connecting crossbar 1 , and a clamping rod 11 is fixedly connected to the lower end of the connecting crossbar 1 . The clamping rod 11 is clamped into the positioning groove 10 , so that the upper and lower connecting crossbars 1 can be aligned.

[0035] Working principle: when in use, a corresponding number of positioning mechanisms are installed according to the size of the breach of the dam. Specifically, a number of second positioning rods 5 are installed at the upper end of the first positioning rod 4 by bolts according to the depth of the dam. After the installation is completed, the lower end of the first positioning rod 4 is driven into the bottom of the dam, and the two T-shaped sliders 20 on one side of the connecting crossbar 1 are inserted into the T-shaped slide groove 12. By connecting the external water inlet pipe with the installation valve 13 on the lower side, the water pipe used for exhaust is connected to the installation valve 13 on the upper side, and all the installation valves 13 are opened and then the lifting of the connecting crossbar 1 is released. At this time, the connecting crossbar 1 will move downward along the first positioning rod 4 and the second positioning rod 5;

[0036] The water source is transported into the foldable water bag 2 through the water pump. After the foldable water bag 2 is injected with water, it will rise upward. When the foldable water bag 2 moves, it will drive the connecting plate 3 to move. The movement of the connecting plate 3 will drive the protective plate 15 connected to its lower end to move. When the protective plate 15 moves to a certain height, under the elastic force of the pushing spring 22, several protective plates 15 will be pushed to move to the left, so that the plug rod 14 connected to the upper end of one group of protective plates 15 moves to the plug groove 16 opened at the lower end of the upwardly moving protective plate 15. At this time, the locking rod 17 located in the plug groove 16 will be squeezed and moved into the storage cavity 31;

[0037] When the plug rod 14 is completely inserted into the plug slot 16, the lock rod 17 will be inserted into the plug hole 18 under the elastic force of the support spring 30. As the foldable water bag 2 is filled with water and moves upward, the connected protective plate 15 will be driven to move upward. When the foldable water bag 2 is completely raised, the surface of the foldable water bag 2 is protected by a plurality of mutually connected protective plates 15 to prevent the surface of the foldable water bag 2 from being damaged by collision with debris.

[0038] When the depth of the dam breach is large, resulting in the folding water bag 2 in a set of connecting cross bars 1 being unable to block the dam breach after being raised, at this time, the two connecting cross bars 1 are assembled together and then connected to the positioning mechanism. Specifically, the blocking block 24 screwed in the internal threaded hole 25 opened in the lower end of the upper connecting cross bar 1 is unscrewed, and after unscrewing, the internal threaded hole 25 opened in the lower end of the upper connecting cross bar 1 is inserted into the connecting pipe 6 connected to the upper end of the lower connecting plate 3. During the insertion process, the conical rubber ring 7 connected to the outside of the connecting pipe 6 will be squeezed and contracted together, and at the same time, the T-shaped limit rod 29 will be squeezed to The connecting tube 6 moves in the limiting cavity 28, so that the connecting spring 27 is compressed. When the conical rubber ring 7 passes through the internal threaded hole 25, the conical rubber ring 7 will pop outward, so that the connecting tube 6 cannot be moved out of the internal threaded hole 25. At the same time, under the elastic force of the connecting spring 27, the clamping end of the T-shaped limiting rod 29 will be clamped into the lock hole 9, and in the process of the connecting tube 6 moving, the conical rod 26 connected to the lower end of the U-shaped rod 21 will pierce the metal sheet 8, so that the water source can flow in the two folding water bags 2. Therefore, when the folding water bag 2 on the lower side is fully raised, the water source will enter the folding water bag 2 on the upper side through the connecting tube 6;

[0039] When the width of the dam breach is large, several connecting cross bars 1 can be installed according to the distance to block the breach. After the dam breach is sealed, steel trough piles are driven on the embankments on both sides of the breach as the starting positioning piles of the embankments on both sides, which play a role in reinforcing the embankments on both sides of the breach and preventing the breach from continuing to expand under the impact of floods. The positive and negative interlocking combination form is adopted to enhance the continuity and integrity of a whole row of steel trough piles. Every 2-3m is a piling and blocking stage. The on-site mechanical construction sequence is as follows: first drive the pile driver to the breach position to pile, and then withdraw the pile driver after completion, and then drive the loading truck loaded with soil and stone to the breach position, unload the soil and stone to fill the breach, and construct simultaneously from the left and right sides of the breach. When only the middle 2-3m breach is left, the water flow is turbulent, and the sealing stone can be filled into the breach from both sides at the same time. If necessary, use larger particle size gabion mesh to fill it, and then fill the soil to complete the complete blocking of the dam breach.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plugging device for dam breach and cofferdam closure, characterized in that: It comprises a connecting cross bar, one side of which is movably connected to the positioning mechanism, a connecting groove is provided in the upper end of the connecting cross bar, a water bag plugging mechanism is fixedly installed in the connecting groove, and water is transported into the water bag plugging mechanism by installing the connecting cross bar and the positioning mechanism together, so that the water bag plugging mechanism rises upward to plug the breach, a plurality of connecting mechanisms are provided in the lower end of the connecting cross bar, and the upper end of another water bag plugging mechanism is connected to the connecting mechanism, so that water source enters from one water bag plugging mechanism into another water bag plugging mechanism, and a storage cavity is provided in the connecting cross bar, and the storage cavity is communicated with the connecting groove; A plurality of protective mechanisms are provided in the storage cavity, the upper end of the protective mechanism on the left is connected to the water bag sealing mechanism, and one side of the protective mechanism on the right is fixedly connected to a plurality of push springs, and the push spring is fixedly connected to the storage cavity at one end away from the protective mechanism. After water is injected into the water bag sealing mechanism, the water bag sealing mechanism will move upward and drive the protective mechanism connected thereto to move. Under the elastic force of the push spring, the upper end of another protective mechanism is connected to the lower end of the protective mechanism that moves upward, and the water bag sealing mechanism is protected by a plurality of protective mechanisms connected together.

2. A plugging device for dam breach and cofferdam closure according to claim 1, characterized in that: The positioning mechanism includes a first positioning rod, the lower end of which is conically arranged, and the upper end of which is mounted with a second positioning rod via bolts. T-shaped grooves are provided in one side of the first positioning rod and the second positioning rod, and two T-shaped sliders are fixedly connected to one side of the connecting cross bar, and the T-shaped sliders are slidably connected in the T-shaped grooves.

3. A plugging device for dam breach and cofferdam closure according to claim 1, characterized in that: The water bag blocking mechanism comprises a foldable water bag, which is folded and arranged in a connecting groove, wherein the lower end of the foldable water bag is fixedly connected to the connecting groove, and the upper end of the foldable water bag is fixedly connected to a connecting plate.

4. A plugging device for dam breach and cofferdam closure according to claim 3, characterized in that: A plurality of connecting tubes are fixedly connected to the upper end of the connecting plate, the lower end of the connecting tube is connected to the folding water bag, a conical rubber ring is fixedly sleeved on the outer side of the connecting tube, a metal sheet is fixedly connected to the inside of the connecting tube, two mounting valves are fixedly connected to one side of the folding water bag, and lock holes are opened on both sides of the connecting tube.

5. The plugging device for dam breach and cofferdam closure according to claim 1, characterized in that: The connecting mechanism includes an internal threaded hole, which is opened in the lower end of the connecting cross bar. Two T-shaped limit rods are movably connected in the internal threaded hole. The lower end of the T-shaped limit rod is arranged in an arc shape. A block is screwed in the lower end of the internal threaded hole. A U-shaped rod is provided on the upper side of the internal threaded hole. The lower end of the U-shaped rod is fixedly connected to the connecting groove. The lower end of the U-shaped rod is fixedly connected to a tapered rod, and the lower end of the tapered rod extends into the internal threaded hole.

6. A plugging device for dam breach and cofferdam closure according to claim 5, characterized in that: One end of the T-shaped limiting rod is slidably connected in the limiting cavity, the limiting cavity is opened in the connecting cross bar, a connecting spring is fixedly connected in the limiting cavity, and the other end of the connecting spring is fixedly connected to the T-shaped limiting rod.

7. The device for sealing dam breach and cofferdam closure according to claim 3, characterized in that: Several of the protective mechanisms include a protective plate, the upper end of the protective plate is fixedly connected to a plug-in rod, both ends of the plug-in rod are provided with plug-in holes, the lower end of the protective plate is provided with a plug-in groove, both ends of the plug-in groove are fixedly connected to a locking rod, one side of the locking rod is arranged in an inclined shape, and a plug-in rod connected to the upper end of the protective plate is fixedly connected to the lower end of the connecting plate.

8. The device for sealing dam breach and cofferdam closure according to claim 7, characterized in that: One end of the locking rod is slidably connected to the storage cavity, the storage cavity is opened in the protective plate, a support spring is fixedly connected in the storage cavity, and the other end of the support spring is fixedly connected to the locking rod.

9. The plugging device for dam breach and cofferdam closure according to claim 1, characterized in that: A positioning groove is provided in the upper end of the connecting cross bar, and a clamping rod is fixedly connected to the lower end of the connecting cross bar.

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