A method and apparatus for protecting against underwater explosions

Abstract

The application provides a protection method and equipment for underwater blasting, comprising the following steps: step one, determining the blasting area, protection area and laying position; step two, making a prefabricated shock-absorbing plate; step three, installing a shock-absorbing and isolating device; step four, forming a bubble curtain; and step five, monitoring the blasting data. The triple protection of the two bubble curtains and the prefabricated shock-absorbing plate enhances the reduction of underwater shock waves, reduces the harm of underwater shock waves to underwater organisms, construction personnel and marine buildings, improves the protection level, and in addition, the prefabricated shock-absorbing plate is assembled by multiple standard prefabricated shock-absorbing plates, and the height and width of the underwater buildings and other protection objects to be protected can be adjusted according to the needs, which is convenient and flexible and improves the efficiency.

Description

Technical Field

[0001] This invention relates to the field of underwater blasting protection technology, specifically to a method and equipment for underwater blasting protection. Background Technology

[0002] Underwater blasting is a blasting operation conducted underwater and is widely used in water conservancy and hydropower projects. In recent years, the number of underwater blasting projects, such as cofferdam demolition and underwater foundation excavation, has been increasing. During underwater blasting, the explosive force generated can damage underwater structures, underwater equipment near the blast area, and marine life. Therefore, protection against underwater blasting shock waves is receiving increasing attention.

[0003] Bubble curtains are widely used in underwater shock wave protection. Bubble curtain technology involves introducing high-pressure gas between the blast zone and the protected object to form a continuously rising, dense bubble curtain. This curtain utilizes the abrupt change in wave impedance between the media to impede the propagation of underwater shock waves. However, the bubble curtain is composed of small bubbles with gaps between them. Some underwater shock waves can easily pass through these gaps, affecting the protected object, thus limiting the effectiveness of bubble curtains in reducing underwater shock waves. Furthermore, bubble curtain tubes are mounted on a single piece of steel plate. To protect underwater structures of varying heights and widths, construction workers need to select suitable steel plates to secure the bubble curtain tubes, resulting in lower efficiency.

[0004] Therefore, we propose a protection method and equipment for underwater blasting. Summary of the Invention

[0005] The purpose of this invention is to provide a method and equipment for protecting against underwater blasting, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for protecting against underwater blasting, comprising the following steps: Step 1: Determine the explosive zone, protection zone, and deployment location: Determine the explosive zone and protection zone according to the construction requirements, determine the placement location of the seismic isolation and damping device between the explosive zone and protection zone, and determine the placement location of the monitoring device on both sides of the explosive zone.

[0007] The monitoring devices are equidistantly positioned on both sides of the detonation zone. Each monitoring device includes a gravity platform and a sensor, which are connected by a steel wire rope.

[0008] Step 2: Fabrication of prefabricated damping panels: The prefabricated damping panels are made by connecting multiple standard prefabricated damping panels, and the standard prefabricated damping panels have a vibration isolation and damping structure inside.

[0009] The vibration isolation and damping structure includes a polyurethane foam board, damping rubber, springs, and a steel mesh. Both sides of the steel mesh are connected to the damping rubber via springs, and the outer side of the damping rubber is connected to the polyurethane foam board.

[0010] Step 3: Install the seismic isolation and damping device: The seismic isolation and damping device includes prefabricated damping plates, foot wing supports, and bubble curtain generating mechanisms. Install the foot wing supports at the lower end of the prefabricated damping plates, and install the bubble curtain generating mechanisms on both sides of the prefabricated damping plates.

[0011] The bubble curtain generating mechanism includes a bubble curtain tube and several nozzles. The bubble curtain tube and the nozzles are connected by rubber hoses. The nozzles are rotatably mounted on a prefabricated shock-absorbing plate. The bubble curtain tube is connected to a bubble generator through an air pipe. The bubble generator is connected to an air compressor through an air pipe.

[0012] The bubble curtain generating mechanism also includes a parallel control system, and several nozzles are connected to the parallel control system. The parallel control system controls the movement of the several nozzles on the prefabricated damping plate.

[0013] The nozzle includes a spray body, one end of which is shaped like a spherical head. The spherical head is connected to a hinge seat, which is located on a prefabricated damping plate. The other end of the spray body is provided with a top spray and a side spray, and both the top spray and the side spray are provided with multiple spray holes.

[0014] The standard prefabricated damping plate has a first steel bar on one side and a steel groove on the opposite side of the first steel bar. The steel groove cooperates with the first steel bar. The horizontal installation of the standard prefabricated damping plate is assembled by the cooperation of the steel groove and the first steel bar. The vertical installation of the standard prefabricated damping plate is assembled by connectors.

[0015] The lower end of the prefabricated damping plate is connected to a foot wing support, and the end of the foot wing support away from the prefabricated damping plate is connected to the underwater rock surface.

[0016] Step 4: Forming a Bubble Curtain: The bubble curtain generating mechanism is activated to inflate and generate a bubble curtain, which forms on both sides of the prefabricated damping plate, separating the detonation zone from the protection zone. The prefabricated damping plate and the bubble curtain located on both sides of the prefabricated damping plate resist the shock wave generated by the explosion.

[0017] Step 5: Monitor blasting data: Install monitoring devices at the locations where monitoring devices are deployed on both sides of the blasting zone. The monitoring devices are used to measure blasting data and adjust the bubble curtain based on the blasting data.

[0018] Secondly, the present invention provides a protective device for underwater blasting, including a vibration isolation and damping device and a monitoring device. The vibration isolation and damping device is installed between the detonation zone and the protection zone, and the monitoring device is installed on both sides of the detonation zone. The vibration isolation and damping device includes a prefabricated damping plate, a foot wing support, and a bubble curtain generating mechanism disposed on both sides of the prefabricated damping plate. The prefabricated damping plate is made of multiple standard prefabricated damping plates connected together. The standard prefabricated damping plate has a vibration isolation and damping structure inside. The foot wing support is installed at the lower end of the prefabricated damping plate. The bubble curtain generating mechanism inflates to generate a bubble curtain, and the bubble curtain is formed on both sides of the prefabricated damping plate.

[0019] The aforementioned underwater blast shock wave protection equipment is used for the protection of aquatic organisms, construction workers, and underwater marine structures.

[0020] Compared with the prior art, the present invention has the following technical effects: In this invention, a bubble curtain generating mechanism is located on both sides of a prefabricated damping plate. The prefabricated damping plate contains a vibration isolation and damping structure. The bubble curtain generating mechanism can generate two bubble curtains, with the prefabricated damping plate positioned between them. After the underwater blast shock wave is attenuated by the first bubble curtain, some of the shock wave still passes through it. The prefabricated damping plate and the second bubble curtain effectively absorb the remaining underwater blast shock wave and dissipate its energy, reducing the harm of underwater shock waves to aquatic life, construction workers, and marine structures. This triple protection of the two bubble curtains and the prefabricated damping plate enhances the reduction of underwater shock waves. The prefabricated damping plate is assembled from multiple standard prefabricated damping plates, allowing workers to adjust the height and width of the underwater structures and other objects to be protected, providing convenience, flexibility, and improved efficiency.

[0021] Furthermore, the bubble curtain tube is equipped with a parallel control system. The parallel control system controls the nozzle to swing freely on the prefabricated damping plate through wires, so that the nozzle has a larger range of motion, and the generated bubbles cover a larger area, forming a thicker bubble curtain. This enhances the reduction effect of the bubble curtain on underwater shock waves, effectively reducing the risk of shock waves and vibrations during the explosion propagating to surrounding underwater structures and other protected objects, and improving the level of protection.

[0022] Furthermore, by deploying monitoring devices at equal intervals to monitor the pressure and wave velocity of underwater explosions, it is possible to obtain the impact level of underwater shock waves on protected objects such as underwater structures after the explosion. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an underwater blast protection device according to an embodiment of the present invention; Figure 2 This is a side view of the nozzle according to an embodiment of the present invention; Figure 3 This is a front view schematic diagram of the nozzle according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the bubble curtain tube according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a standard prefabricated damping plate according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the connection of a standard prefabricated damping plate according to an embodiment of the present invention; Figure 7 This is a schematic diagram showing the connection between the prefabricated damping plate and the rock surface in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached diagram: 1. Explosion-proof zone; 2. Protection zone; 3. Gravity platform; 4. Steel wire rope; 5. Sensor; 6. Air compressor; 7. Air pipe; 8. Bubble generator; 9. Support plate; 10. Prefabricated shock-absorbing plate; 11. Nozzle; 111. Spray body; 112. Top spray; 113. Side spray; 12. Hinge seat; 13. Bubble curtain tube; 14. Compression fitting; 15. Wire; 16. Parallel control system; 17. Rubber hose; 18. Standard prefabricated shock-absorbing plate; 181. Steel plate; 182. Polyurethane foam board; 183. Shock-absorbing rubber; 184. Spring; 185. Reinforcing mesh; 19. First reserved hole; 20. Fastening bolt; 21. Steel channel; 22. First steel bar; 23. Second reserved hole; 24. Connector; 25. Third reserved hole; 26. Second steel bar; 27. Foot wing support. Detailed Implementation

[0025] To make the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are merely one implementation method and do not represent all embodiments.

[0026] Example 1 For example, please refer to Figures 1 to 7This embodiment provides a protective device for underwater blasting, including a vibration isolation and damping device and a monitoring device. The vibration isolation and damping device is installed between the blasting zone 1 and the protection zone 2, and the monitoring device is installed on both sides of the blasting zone 1. The vibration isolation and damping device includes a prefabricated damping plate 10, foot wing supports 27, and a bubble curtain generating mechanism located on both sides of the prefabricated damping plate 10. The prefabricated damping plate 10 is assembled from multiple standard prefabricated damping plates 18, each with a width of 10m and a height of 20m. The standard prefabricated damping plate 18 has a vibration isolation and damping structure inside. The foot wing supports 27 are installed at the lower end of the prefabricated damping plate 10. The bubble curtain generating mechanism inflates to generate a bubble curtain, which forms on both sides of the prefabricated damping plate 10. The prefabricated damping plate 10 and the bubble curtains located on both sides of the prefabricated damping plate 10 resist the shock wave generated by the blast. The bubble curtain generating mechanism is located on both sides of the prefabricated damping plate 10. The prefabricated damping plate 10 has an internal vibration isolation and damping structure. The bubble curtain generating mechanism can generate two bubble curtains, with the prefabricated damping plate 10 positioned between them. After the underwater blast shock wave is attenuated by the first bubble curtain, some of the underwater blast shock wave still passes through it. The prefabricated damping plate 10 and the second bubble curtain effectively absorb the remaining underwater blast shock wave and dissipate its energy, reducing the harm of underwater shock waves to aquatic life, construction workers, and marine structures. Through the triple protection of the two bubble curtains and the prefabricated damping plate 10, the reduction of underwater shock waves is enhanced. The prefabricated damping plate 10 is assembled from multiple standard prefabricated damping plates 18, allowing for adjustment of the height and width of the underwater structures and other protected objects as needed, providing convenience, flexibility, and improved efficiency.

[0027] Specifically, the seismic isolation and damping structure, from the outside to the inside, consists of polyurethane foam board 182, damping rubber 183, springs 184, and steel mesh 185. The steel mesh 185 acts as a framework. Springs 184 are welded to both sides of the steel mesh 185. The end of the spring 184 away from the steel mesh 185 is bonded to the damping rubber 183. The outer side of the damping rubber 183 connects to the inner side of the polyurethane foam board 182. The outer side of the damping rubber 183 refers to the side of the damping rubber 183 away from the springs 184. The inner side of the polyurethane foam board 182 refers to the side of the polyurethane foam board 182 away from the steel plate 181. A waterproof coating is applied to the edges of the polyurethane foam board 182 for waterproofing. The outer side of the polyurethane foam board 182 connects to the steel plate 181. The outer side of the polyurethane foam board 182 refers to the side of the polyurethane foam board 182 away from the damping rubber 183. All layers of materials are tightly connected. The seismic isolation and damping structure is used to absorb underwater blast shock waves and dissipate their energy.

[0028] Specifically, the bubble curtain generating mechanism includes a bubble curtain tube 13, which is fixed to the prefabricated damping plate 10 by a clamp 14. Several nozzles 11 are evenly installed on the prefabricated damping plate 10. The bubble curtain tube 13 is connected to one side of each nozzle 11 through a rubber hose 17. The lower end of the bubble curtain tube 13 is connected to the bubble generator 8 through an air pipe 7. The side of the bubble generator 8 away from the bubble curtain tube 13 is connected to the air compressor 6 through the air pipe 7. The air pipe 7 is a 50 mm rubber tube. In use, the air compressor 6 supplies compressed air to the bubble generator 8 through the air pipe 7. The compressed air enters the bubble generator 8 to generate bubbles. The bubbles enter the bubble curtain pipe 13 through the air pipe 7. The bubbles move in the bubble curtain pipe 13. When they move to the position of the rubber hose 17, the bubbles enter the nozzle 11 through the rubber hose 17. The bubbles are sprayed out through several nozzles 11 to form a bubble curtain. The bubble curtain can effectively weaken the pressure peak of the underwater shock wave and play a protective role for underwater structures and other protected objects.

[0029] Specifically, when the bubble generator 8 sinks to the bottom of the water, it needs to be equipped with a steel wire rope 4 of sufficient weight to ensure that the bubble generator 8 sinks smoothly to the bottom of the water. After sinking to the bottom of the water, two 300kg positioning anchors are installed at both ends of the bubble generator 8 to prevent the bubble generator 8 from moving when supplying air.

[0030] Specifically, a parallel control system 16 is provided at the upper end of the bubble curtain tube 13. A common wire 15 connects some of the nozzles 11 to the parallel control system 16, and another common wire 15 connects other nozzles 11 to the parallel control system 16. The two groups of nozzles 11 are connected in parallel, so that when one group of nozzles 11 cannot swing freely, the remaining nozzles 11 can still swing freely. The parallel control system 16 includes a status sensor and a control unit. The status sensor is installed near the nozzles 11 to monitor their operating status. The status sensor transmits the acquired data to the control unit via the wire 15. Based on the data provided by the sensor, the control unit uses a pre-set control algorithm to calculate the action that the nozzles 11 should take, generates a corresponding control signal based on the calculation result, and transmits it to the nozzles 11 via the wire 15. The nozzles 11 adjust their position and attitude according to the received control signal.

[0031] The parallel control system 16 controls the nozzle 11 to swing freely on the prefabricated damping plate 10 via the wire 15. This allows the nozzle 11 to have a larger range of motion, and the generated bubbles cover a larger area, forming a thicker bubble curtain. This enhances the reduction effect of the bubble curtain on underwater shock waves, effectively reducing the risk of shock waves and vibrations during the explosion propagating to surrounding underwater structures and other protected objects, thus improving the level of protection.

[0032] Specifically, the nozzle 11 includes a nozzle body 111, one end of which is spherical and connected to a hinge seat 12 via a ball joint. The hinge seat 12 is tightly fixed to the prefabricated shock-absorbing plate 10. The nozzle 11's connection to the hinge seat 12 via the ball joint allows for a greater range of motion and freedom of movement, forming a larger bubble curtain and enhancing its effectiveness in reducing underwater shock waves. The other end of the nozzle body 111 has a top spray 112 and three side sprays 113. The three side sprays 113 are evenly arranged facing the sides of the nozzle body 111, while the top spray 112 is located in the middle of the three side sprays 113, facing the front of the nozzle body 111. This allows the nozzle 11 to generate more and denser bubbles, forming a thicker bubble curtain, effectively reducing the risk of shock waves and vibrations during an explosion propagating to surrounding underwater structures and other protected objects, thus improving the level of protection. Both the top spray 112 and the side spray 113 have evenly distributed spray holes, through which bubbles are ejected to form a bubble curtain.

[0033] Specifically, the monitoring device includes a gravity platform 3, which is connected to a sensor 5 via a steel cable 4. The sensor 5 is a PCB-138A01 model and contains a wireless communication module. After an underwater explosion, the shock wave spreads outwards. The sensor 5 monitors the pressure and wave velocity of the underwater explosion and transmits the monitoring data to the gravity platform 3 via the wireless communication module. Based on the monitoring data, personnel assess the impact of the underwater shock wave on underwater structures and other protected objects, and adjust the bubble curtain accordingly. The monitoring devices are evenly spaced on both sides of the detonation zone 1, enabling more effective monitoring of the pressure and wave velocity of the underwater explosion.

[0034] Specifically, the standard prefabricated damping plate 18 has first reserved holes 19 around its perimeter for installing fastening bolts 20. A first steel strip 22 is provided on one side of the standard prefabricated damping plate 18, and a steel channel 21 is provided on the opposite side of the first steel strip 22. The steel channel 21 and the first steel strip 22 cooperate with each other. The lateral installation of the standard prefabricated damping plate 18 is achieved through the cooperation of the steel channel 21 and the first steel strip 22, and the fixing with the fastening bolts 20. During lateral installation, the first steel strip 22 of one standard prefabricated damping plate 18 is assembled with the steel channel 21 of another standard prefabricated damping plate 18, and then the fastening bolts 20 are inserted into the first reserved holes 19 for fixation. The standard prefabricated damping plate 18 has a second reserved hole 23 in the vertical direction. The connector 24 has a second steel bar 26 that mates with the second reserved hole 23. The connector 24 also has a third reserved hole 25 that mates with the first reserved hole 19 in the horizontal direction of the standard prefabricated damping plate 18. The vertical installation of the standard prefabricated damping plate 18 is achieved by assembling the second steel bar 26 with the second reserved hole 23 and fixing it with fastening bolts 20. During vertical installation, the second steel bar 26 on the connector 24 is inserted into the second reserved hole 23, and then the fastening bolts 20 are inserted into the first reserved hole 19 and the third reserved hole 25 for fixing. Then, the second reserved hole 23 of another standard prefabricated damping plate 18 is aligned with the second steel bar 26 at the bottom of the connector 24, inserted into the connector 24, and then the fastening bolts 20 are inserted into the first reserved hole 19 and the third reserved hole 25 for fixing.

[0035] Specifically, the lower end of the prefabricated damping plate 10 is provided with a foot support 27. The end of the foot support 27 away from the prefabricated damping plate 10 is fixed to the underwater rock surface by fastening bolts 22. The upper surface of the foot support 27 is provided with a third steel strip that mates with the second reserved hole 23. The prefabricated damping plate 10 and the foot support 27 are assembled by the cooperation of the third steel strip and the second reserved hole 23 and the fixing of the fastening bolts 22. During installation, the foot support 27 is first fixed to the underwater rock surface by fastening bolts 22, then the third steel strip on the foot support 27 is inserted into the second reserved hole 23, and then the fastening bolts 22 are inserted into the first reserved hole 19 in the transverse direction of the standard prefabricated damping plate 18 for fixing.

[0036] Specifically, a support plate 9 is provided on the side of the prefabricated damping plate 10 away from the detonation zone 1, and the support plate 9 provides support for the prefabricated damping plate 10.

[0037] Example 2 As an example, this embodiment provides a protection method for underwater blasting, using the equipment described in Embodiment 1, and includes the following steps: Step 1: Determine the locations of the detonation zone 1, the protection zone 2, and the vibration isolation and monitoring devices: Determine the area of ​​the detonation zone 1 and the area of ​​the protection zone 2 according to the construction requirements. Determine the location of the vibration isolation and monitoring devices between the detonation zone 1 and the protection zone 2. Determine the location of the monitoring devices on both sides of the detonation zone 1.

[0038] Step 2: Fabrication of prefabricated damping plate 10: The prefabricated damping plate 10 is made of multiple standard prefabricated damping plates 18 and fixed with fastening bolts 20. The standard prefabricated damping plate 18 has a vibration isolation and damping structure inside.

[0039] Step 3: Install the seismic isolation and damping device: The seismic isolation and damping device includes a prefabricated damping plate 10, a foot support 27, and a bubble curtain generating mechanism. The foot support 27 is installed at the lower end of the prefabricated damping plate 10, and the bubble curtain generating mechanism is installed on both sides of the prefabricated damping plate 10.

[0040] Step 4: Forming a bubble curtain: The assembled vibration isolation and damping device is lowered to the deployment position, and the bubble curtain generating mechanism is activated to inflate and generate a bubble curtain. The bubble curtain is formed on both sides of the prefabricated damping plate 10, separating the detonation zone 1 from the protection zone 2.

[0041] Step 5: Monitor blasting data: Install monitoring devices at equal intervals on both sides of the blasting zone 1. The monitoring devices are used to measure blasting data. The staff will use the blasting data to assess the impact of the underwater shock wave on underwater structures and other protected objects after the explosion, and adjust the bubble curtain accordingly.

[0042] The specific embodiments of the present invention have been described in detail above with reference to the figures, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A protective method for underwater blasting, characterized in that, Includes the following steps: Step 1: Determine the explosive zone, protection zone, and deployment location: Determine the explosive zone and protection zone according to the construction requirements, determine the placement location of the vibration isolation and damping device between the explosive zone and protection zone, and determine the placement location of the monitoring device on both sides of the explosive zone. Step 2: Fabrication of prefabricated damping panels: The prefabricated damping panels are made by connecting multiple standard prefabricated damping panels, and the standard prefabricated damping panels have a vibration isolation and damping structure inside; Step 3: Install the seismic isolation and damping device: The seismic isolation and damping device includes prefabricated damping plates, foot wing supports, and bubble curtain generating mechanism. Install the foot wing supports at the lower end of the prefabricated damping plates, and install the bubble curtain generating mechanism on both sides of the prefabricated damping plates. Step 4: Forming a bubble curtain: Activate the bubble curtain generating mechanism to inflate and generate a bubble curtain. The bubble curtain is formed on both sides of the prefabricated damping plate, separating the detonation zone from the protection zone. The prefabricated damping plate and the bubble curtain located on both sides of the prefabricated damping plate resist the shock wave generated by the explosion. Step 5: Monitor blasting data: Install monitoring devices at the locations where monitoring devices are deployed on both sides of the blasting zone. The monitoring devices are used to measure blasting data and adjust the bubble curtain based on the blasting data.

2. The underwater blasting protection method according to claim 1, characterized in that, The vibration isolation and damping structure includes a polyurethane foam board, damping rubber, springs, and a steel mesh. Both sides of the steel mesh are connected to the damping rubber via springs, and the outer side of the damping rubber is connected to the polyurethane foam board.

3. The underwater blasting protection method according to claim 1, characterized in that, The bubble curtain generating mechanism includes a bubble curtain tube and several nozzles. The bubble curtain tube and the nozzles are connected by rubber hoses. The nozzles are rotatably mounted on a prefabricated shock-absorbing plate. The bubble curtain tube is connected to a bubble generator through an air pipe. The bubble generator is connected to an air compressor through an air pipe.

4. The underwater blasting protection method according to claim 3, characterized in that, The bubble curtain generating mechanism also includes a parallel control system, and several nozzles are connected to the parallel control system. The parallel control system controls the movement of the several nozzles on the prefabricated damping plate.

5. The underwater blasting protection method according to claim 3, characterized in that, The nozzle includes a spray body, one end of which is shaped like a spherical head. The spherical head is connected to a hinge seat, which is located on a prefabricated damping plate. The other end of the spray body is provided with a top spray and a side spray, and both the top spray and the side spray are provided with multiple spray holes.

6. The underwater blasting protection method according to claim 1, characterized in that, The monitoring devices are equidistantly positioned on both sides of the detonation zone. Each monitoring device includes a gravity platform and a sensor, which are connected by a steel wire rope.

7. The underwater blasting protection method according to claim 1, characterized in that, The standard prefabricated damping plate has a first steel bar on one side and a steel groove on the opposite side of the first steel bar. The steel groove cooperates with the first steel bar. The horizontal installation of the standard prefabricated damping plate is assembled by the cooperation of the steel groove and the first steel bar. The vertical installation of the standard prefabricated damping plate is assembled by connectors.

8. The underwater blasting protection method according to claim 1, characterized in that, The lower end of the prefabricated damping plate is connected to a foot wing support, and the end of the foot wing support away from the prefabricated damping plate is connected to the underwater rock surface.

9. A protective device for underwater blasting, characterized in that, The device includes a seismic isolation and damping device and a monitoring device. The seismic isolation and damping device is installed between the detonation zone and the protection zone, and the monitoring device is installed on both sides of the detonation zone. The seismic isolation and damping device includes a prefabricated damping plate, foot wing supports, and a bubble curtain generating mechanism located on both sides of the prefabricated damping plate. The prefabricated damping plate is made up of multiple standard prefabricated damping plates connected together. The standard prefabricated damping plate has a seismic isolation and damping structure inside. The foot wing supports are installed at the lower end of the prefabricated damping plate. The bubble curtain generating mechanism inflates to generate a bubble curtain, which is formed on both sides of the prefabricated damping plate.

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