Underwater tunnel sealing device

Abstract

This utility model discloses an underwater tunnel sealing device, which includes: telescopic sealing structures at both ends of a floating sluice gate in the height direction; a support structure disposed on the large surface of the floating sluice gate, the support structure including a driving component and a rotatable support rod, the driving component being connected to the support rod to adjust the angle of the support rod to avoid or contact the tunnel wall; one end of an umbilical cable being connected to the large surface on the other side of the floating sluice gate, and the other end of the umbilical cable being used to connect to a power source and signal system located on land. According to this application, the underwater tunnel sealing device dynamically adjusts buoyancy through the filling and emptying chambers of the floating sluice gate, precisely positioning and moving it to the underwater tunnel; the telescopic sealing structures at both ends make uniform contact with the tunnel wall, thereby sealing the water surface of the tunnel and draining the water behind the floating sluice gate, forming a dry area behind the floating sluice gate, reducing the risks of underwater operations.

Description

Technical Field

[0001] This utility model relates to the field of underwater construction technology, and in particular to an underwater tunnel sealing device. Background Technology

[0002] Power station tunnels are underwater structures used for flood discharge, water diversion, or venting. Due to long-term use, these structures can suffer damage. If not repaired promptly, the damage can spread, potentially endangering the entire structure. When the project involves large reservoirs or high dams, the section upstream of the tunnel gate is often a permanent underwater structure, making dry-land construction difficult. Currently, tunnel sealing methods primarily include backfilling with soil and rock, sandbag stacking, concrete grouting, or precast concrete walls. These methods have the following drawbacks: Low efficiency: They require significant manpower and resources, and construction is particularly difficult and time-consuming in underwater environments, making it difficult to cope with emergencies such as sudden water or sand inrushes. High cost: They consume large amounts of materials, and the sealing material (such as concrete) must be removed afterward, resulting in resource waste and secondary pollution. Utility Model Content

[0003] The main purpose of this utility model is to provide an underwater tunnel sealing device to solve the problem that underwater tunnels are not easy to seal.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The underwater tunnel sealing device according to this application includes:

[0006] A floating box type water-retaining gate, wherein both ends of the floating box type water-retaining gate in the height direction are provided with telescopic sealing structures, and the working surface of the telescopic sealing structure can be adjusted in height to protrude out of the floating box type water-retaining gate or at least partially retract into the floating box type water-retaining gate;

[0007] A support structure is provided on the large surface of the floating box-type water-retaining gate. The support structure includes a driving component and a rotatable support rod. The driving component is connected to the support rod to adjust the angle of the support rod to avoid or contact the inner wall of the tunnel.

[0008] An umbilical cable, one end of which is connected to the floating sluice gate, and the other end of which is used to connect to a power source and signaling system located on land.

[0009] According to the underwater tunnel sealing device of this application, both ends of the floating box-type water-blocking gate are provided with mounting grooves, the telescopic sealing structure is installed in the mounting grooves, and a filling device is provided inside the floating box-type water-blocking gate. The filling device is connected to the inner cavity of the telescopic sealing structure through a pipeline, and the filling device is used to fill the inner cavity of the telescopic sealing structure with a medium.

[0010] Optionally, the filling device includes a medium storage tank, a booster pump, and a flow regulating valve. The booster pump is located on the pipeline between the medium storage tank and the telescopic sealing structure, and the flow regulating valve is located at the outlet end of the booster pump.

[0011] Optionally, a cover is fixed in the mounting groove, and an avoidance opening is provided on the cover. The telescopic sealing structure is provided with a fixing part and a sealing part provided on the fixing part. The sealing part passes through the avoidance opening. A guide slope is provided on the inner surface of the cover. The guide slope is provided on all sides of the avoidance opening. The guide slope is inclined in a direction that gradually moves away from the mounting groove as it gradually approaches the avoidance opening.

[0012] Optionally, the inner surface of the cover is provided with a snap protrusion, and the fixing part is provided with a snap-fit ​​groove, wherein the snap protrusion is snapped into the snap-fit ​​groove.

[0013] Optionally, the sealing part is configured as a flexible corrugated tube; and / or the free end of the sealing part is provided with a plurality of protruding sealing strips spaced sequentially along the thickness direction of the floating sluice gate.

[0014] Optionally, a friction block is hinged to the free end of the support rod, and the working surface of the friction block is provided with anti-slip texture.

[0015] Optionally, the underwater tunnel sealing device further includes a housing, which is located on the same side of the floating sluice gate as the supporting structure, and the housing is fixedly connected to the floating sluice gate. There are multiple supporting rods and multiple driving components, and multiple supporting rods and multiple driving components are arranged sequentially at intervals on both sides of the length direction of the housing. The length direction of the housing is perpendicular to the large surface of the floating sluice gate.

[0016] Optionally, the drive component is configured as a cylinder and a connecting rod connected to the output end of the cylinder, the other end of the connecting rod being hinged to the support rod.

[0017] According to the underwater tunnel sealing device of this application, the umbilical cable includes an independent power transmission line and a signal transmission line. The power transmission line is covered with a pressure-resistant protective sleeve, the signal transmission line is made of optical fiber, and an electromagnetic shielding layer is provided between the power transmission line and the signal transmission line. The filling device and the driving component are both electrically connected to one end of the power transmission line, and the other end of the power transmission line is electrically connected to the power source. The filling device and the driving component are also connected to one end of the signal transmission line, and the other end of the signal transmission line is used for electrical connection to the signal system.

[0018] The technical solution provided by the utility model embodiments has the following advantages compared with the prior art:

[0019] The underwater tunnel sealing device provided in this application dynamically adjusts buoyancy through the filling and emptying chambers of the pontoon-type water-retaining gate, adapting to complex underwater environments and precisely positioning itself to move into the underwater tunnel. Once the pontoon-type water-retaining gate is in place, the telescopic sealing structures at both ends can change state, protruding from the pontoon-type water-retaining gate to ensure uniform contact with the tunnel wall, thereby sealing the water surface of the tunnel and draining the water behind the pontoon-type water-retaining gate, creating a dry area. The drive component provides driving force to the support rod after the pontoon-type water-retaining gate is in place, driving the support rod to adjust its angle and evenly distribute the contact force with the tunnel wall. The umbilical cable can transmit signals to the power supply and signal system on shore, facilitating shore-based control of the underwater tunnel sealing device and reducing the risks of underwater operations. Attached Figure Description

[0020] Figure 1 A schematic diagram of the underwater tunnel sealing device provided in this embodiment of the utility model during operation;

[0021] Figure 2 A schematic diagram of the underwater tunnel sealing device provided in this embodiment of the present invention in its working state;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 A schematic diagram of the underwater tunnel sealing device provided in the embodiment of this utility model in the avoidance state;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0025] Labeling: Floating box type water gate 10, mounting groove 11, cover 12, clearance opening 121, guide slope 122, locking protrusion 123, telescopic sealing structure 20, fixing part 21, sealing part 22, support structure 30, driving component 31, support rod 32, friction block 33, connecting rod 34, cylinder 35, box body 50. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] like Figure 1 and Figure 2 As shown, the underwater tunnel sealing device according to an embodiment of this application includes a floating gate 10, a support structure 30, and an umbilical cable.

[0028] Specifically, both ends of the floating sluice gate 10 in the height direction are provided with telescopic sealing structures 20. The working surface of the telescopic sealing structure 20 can be adjusted in height to protrude from the floating sluice gate 10 or at least partially retract into the floating sluice gate 10. The support structure 30 is provided on the large surface of the floating sluice gate 10. The support structure 30 includes a drive component 31 and a rotatable support rod 32. The drive component 31 is connected to the support rod 32 to adjust the angle of the support rod 32 to avoid or contact the inner wall of the tunnel. The umbilical cable is connected to the floating sluice gate 10. The other end of the umbilical cable is used to connect to the power supply and signal system located on land.

[0029] In the above embodiments, such as Figure 2 and Figure 3 As shown, when the underwater tunnel sealing device is in operation, the working surface of the telescopic sealing structure 20 protrudes beyond the floating sluice gate 10; as Figure 4 and Figure 5 As shown, when the underwater tunnel sealing device is in the avoidance state, the working surface of the telescopic sealing structure 20 is at least partially retracted into the floating box-type water gate 10.

[0030] According to the underwater tunnel sealing device of this application embodiment, the buoyancy of the floating pontoon gate 10 is dynamically adjusted by filling and draining the chambers, allowing it to adapt to complex underwater environments and accurately position itself within the underwater tunnel. Once the floating pontoon gate 10 is in place, the telescopic sealing structures 20 at both ends can change their state, protruding from the floating pontoon gate 10 to ensure uniform contact with the tunnel wall, thereby sealing the water surface of the tunnel. Similarly, since the working surface of the telescopic sealing structure 20 is adjustable, when it protrudes from the floating pontoon gate 10 and contacts the tunnel wall, its elasticity allows it to fit tightly against the tunnel wall based on the amount of filling medium and its own deformation, ensuring a sealing effect. After the water behind the floating sluice gate 10 is drained, a dry area is formed behind the floating sluice gate 10. The drive component 31 can provide driving force to the support rod 32 after the floating sluice gate 10 is moved into place. The drive support rod 32 adjusts the angle and the contact force with the tunnel wall is evenly distributed. The umbilical cable can transmit signals to the power supply and signal system on the shore to facilitate the control of the underwater tunnel sealing device on the shore and reduce the risk of underwater operations.

[0031] like Figure 3 and Figure 5As shown, in the underwater tunnel sealing device according to the embodiment of this application, both ends of the floating box type water-blocking gate 10 are provided with mounting grooves 11, and a filling device is provided inside the floating box type water-blocking gate 10. The filling device is connected to the inner cavity of the telescopic sealing structure 20 through a pipeline, and the filling device is used to fill the inner cavity of the telescopic sealing structure 20 with a medium.

[0032] In the above embodiments, the pontoon structure can flexibly change its buoyancy by adjusting its water filling or drainage. During underwater tunnel sealing operations, the pontoon-type water-retaining gate 10 can be positioned at a designated location based on different water depths, flow conditions, and the specific location of the tunnel, ensuring its stable working position. The pontoon-type water-retaining gate 10 possesses sufficient strength and rigidity to withstand underwater water pressure and flow impact. During sealing, it effectively blocks water flow through the tunnel, providing a stable foundation for subsequent sealing and support work. The mounting groove 11 provides a precise installation position for the telescopic sealing structure 20, ensuring that the telescopic sealing structure 20 can be accurately installed at both ends of the pontoon-type water-retaining gate 10, ensuring a precise positional relationship between the telescopic sealing structure 20 and the tunnel inner wall, and providing a good sealing effect. The filling device precisely controls the expansion and contraction of the telescopic sealing structure 20 by filling the inner cavity with a medium (such as gas or liquid). When sealing is required, the filling medium causes the sealing structure to expand and bulge out, tightly fitting against the tunnel wall. When removal or adjustment is needed, the medium is discharged, causing the sealing structure to retract. Understandably, the pressure of the filling medium can be adjusted according to the actual sealing requirements and the tunnel's water pressure, thereby changing the contact pressure between the sealing structure and the tunnel wall to ensure a good sealing effect.

[0033] The filling medium can be water or air.

[0034] In some embodiments, the filling device includes a medium storage tank, a booster pump, and a flow regulating valve. The booster pump is disposed on the pipeline between the medium storage tank and the telescopic sealing structure 20, and the flow regulating valve is disposed at the outlet end of the booster pump.

[0035] In detail, the media storage tank is used to store media such as water or high-pressure gas. A pressure transmitter is installed on the top of the tank to monitor the media pressure inside the storage tank in real time. A booster pump is used to quickly increase the media pressure, thereby ensuring that the telescopic seal structure 20 can expand rapidly. The flow regulating valve can use a stainless steel housing with an IP68 protection rating, which can operate continuously in an environment at least 100 meters underwater.

[0036] like Figure 3 and Figure 5As shown, in some embodiments, a cover 12 is fixed in the mounting groove 11, and an avoidance opening 121 is provided on the cover 12. The telescopic sealing structure 20 is provided with a fixing part 21 and a sealing part 22 provided on the fixing part 21. The sealing part 22 passes through the avoidance opening 121. A guide slope 122 is provided on the inner surface of the cover 12. Guide slopes 122 are provided on all sides of the avoidance opening 121. The guide slopes 122 are inclined in a direction that gradually moves away from the mounting groove 11 as they gradually approach the avoidance opening 121.

[0037] In the above embodiments, the mounting groove 11 is a structure pre-set at both ends of the floating box-type water-blocking gate 10, providing installation space and positioning foundation for the cover 12 and the telescopic sealing structure 20. The shape and size of the mounting groove 11 are adapted to the cover 12 and the telescopic sealing structure 20, ensuring accurate installation and stable connection of each component. The clearance opening 121 on the cover 12 matches the size and shape of the sealing part 22 of the telescopic sealing structure 20, allowing the sealing part 22 to pass smoothly and extend normally to contact the tunnel inner wall to achieve the sealing function. The guide slope 122 can limit the displacement of the telescopic sealing structure while providing space for the deformation of the telescopic sealing structure after filling with medium, so that the telescopic sealing structure 20 can better adapt to the unevenness of the tunnel inner wall. Even if there is a certain tilt or unevenness in the tunnel inner wall, the sealing part 22 can extend smoothly under the guidance of the guide slope 122 and fit tightly against the tunnel wall. The fixing part 21 is fixed to the cover 12 by snap-fit, which can ensure the overall stability of the telescopic sealing structure 20. The sealing part 22 can expand and contract under the action of the filling device. It is inserted into the clearance opening 121 of the cover 12 and can fit against the inner wall of the tunnel when it extends, thereby preventing water from flowing through.

[0038] like Figure 3 and Figure 5 As shown, in some embodiments, the inner surface of the cover 12 is provided with a snap protrusion 123, and the fixing part 21 is provided with a snap groove, in which the snap protrusion 123 is snapped.

[0039] In the above embodiments, the cover 12 and the telescopic sealing structure 20 are connected by the snap protrusion 123 and the snap groove to form a more stable overall structure. When working underwater, it can better withstand the impact and pressure of water flow and reduce the risk of seal failure caused by loosening or displacement of components.

[0040] In some embodiments, the sealing part 22 is configured as a flexible corrugated tube, which allows the sealing part 22 to adaptively bend at a certain angle with the unevenness of the tunnel wall, ensuring that the sealing surface of the sealing part 22 is in full contact with the tunnel wall.

[0041] In some embodiments, the free end of the sealing part 22 is provided with a plurality of protruding sealing strips spaced sequentially along the thickness direction of the floating box-type water-blocking gate 10.

[0042] When water pressure exists in the underwater tunnel, the outermost sealing strip (farthest from the floating gate 10) first contacts the tunnel wall and bears most of the water pressure, forming the first sealing barrier. If this sealing strip suffers local damage or its sealing performance deteriorates, the adjacent inner sealing strip will immediately take effect and continue to prevent water flow, and so on. Experimental tests have shown that in a simulated tunnel environment, even after the outermost sealing strip fails, the subsequent two sealing strips can still block more than 70% of the water flow, greatly improving the reliability of the sealing structure and effectively avoiding sealing failure caused by the damage of a single sealing component.

[0043] The serrated or wavy design of the free end of the sealing strip increases the contact area and friction with the tunnel wall. When the sealing part 22 contacts the tunnel wall, these uneven structures can fit into tiny gaps or uneven areas on the tunnel wall surface, further improving the sealing accuracy.

[0044] like Figure 2 and Figure 4 As shown, in some embodiments, the free end of the support rod 32 is hinged to a friction block 33, and the working surface of the friction block 33 is provided with anti-slip texture.

[0045] In the above embodiment, the free end of the support rod 32 is hinged to the friction block 33. This allows the friction block 33 to adjust its posture within a certain angle range, better adapting to the irregular shape of the tunnel wall. For example, when there are local protrusions or depressions on the tunnel wall, the friction block 33 can automatically adjust its angle. Figure 2 At the same time, the friction block 33 adjusts to a suitable angle according to the tunnel wall to ensure that the working face can fully contact the tunnel wall, such as Figure 4 At that time, friction block 33 is in its natural state.

[0046] The working surface of the friction block 33 is provided with anti-slip textures. The texture shapes are commonly sawtooth, grid, or stripe. The anti-slip textures on the working surface of the friction block 33 significantly increase the friction between it and the tunnel wall. When the underwater tunnel sealing device is subjected to external forces such as water flow impact and water pressure changes, the friction block 33 firmly "grips" the tunnel wall by relying on the anti-slip textures, effectively preventing the entire support structure 30 from slipping, ensuring the stability of the underwater tunnel sealing device in the tunnel, and ensuring that the sealing work can be carried out continuously and reliably.

[0047] like Figure 2 and Figure 4As shown, in some embodiments, the underwater tunnel sealing device further includes a housing 50, which is disposed on the same side of the floating box-type water-blocking gate 10 and the housing 50 is fixedly connected to the floating box-type water-blocking gate 10. There are multiple support rods 32 and driving components 31, which correspond one-to-one. Multiple support rods 32 and multiple driving components 31 are sequentially spaced on both sides of the length direction of the housing 50. The length direction of the housing 50 is perpendicular to the large surface of the floating box-type water-blocking gate 10.

[0048] In the above embodiments, when the floating gate 10 is subjected to external forces such as water pressure and water flow impact, these support rods 32 can distribute and transfer the load to the inner wall of the tunnel. Compared with single-point or few-point support, multi-point support greatly increases the support area and reduces the pressure per unit area, thereby improving the stability of the entire device underwater. When encountering local unevenness or uneven pressure distribution on the inner wall of the tunnel, each drive component 31 can independently adjust the angle and support force of the corresponding support rod 32 according to actual needs, so that the entire support structure 30 can better adapt to the complex tunnel environment and further enhance the stability and reliability of the support.

[0049] In some embodiments, the component that provides power in the drive component 31 is an electric motor.

[0050] like Figure 2 and Figure 4 As shown, in some embodiments, the drive component 31 is configured as a cylinder 35 and a connecting rod 34 connected to the output end of the cylinder 35, with the other end of the connecting rod 34 hinged to the support rod 32. The cylinder 35, as the drive component 31, provides a relatively stable and controllable driving force. By controlling the air pressure within the cylinder 35, the output force can be precisely adjusted to adapt to different working conditions. For example, when it is necessary to fix the floating gate 10 in a tunnel with different water pressures, the air pressure of the cylinder 35 can be adjusted according to the actual water pressure, so that the support rod 32 can press against the tunnel wall with appropriate force, ensuring the stability of the gate. The connecting rod 34 hinges the output end of the cylinder 35 to the support rod 32. This connection method can effectively transmit the driving force of the cylinder 35 while allowing the support rod 32 to rotate flexibly within a certain range. The support rod 32 can adjust its angle under the drive of the connecting rod 34 according to the shape of the tunnel wall and actual needs, better fitting against the tunnel wall and improving the stability and sealing of the support.

[0051] According to the underwater tunnel sealing device of this application embodiment, the umbilical cable includes an independent power transmission line and a signal transmission line. The power transmission line is covered with a pressure-resistant protective sleeve, the signal transmission line is made of optical fiber, and an electromagnetic shielding layer is provided between the power transmission line and the signal transmission line. The filling device and the driving component 31 are both electrically connected to one end of the power transmission line, and the other end of the power transmission line is electrically connected to the power source. The filling device and the driving component 31 are also connected to one end of the signal transmission line, and the other end of the signal transmission line is used to electrically connect to the signal system.

[0052] In the above embodiments, the power transmission line and the signal transmission line are independent of each other, meaning that high current and high voltage fluctuations during power transmission will not directly interfere with signal transmission. The pressure-resistant protective sleeve covering the power transmission line is typically made of high-strength, water-pressure-resistant materials, such as specially made metal armor or high-strength rubber composite materials. In the high-pressure environment of underwater tunnels, it can effectively resist external water pressure and prevent the power transmission line from being squeezed, deformed, or broken. The signal transmission line uses optical fiber, which has extremely strong anti-electromagnetic interference capabilities. The underwater environment is complex and contains various sources of electromagnetic interference, such as electromagnetic fields generated by surrounding electrical equipment. Optical fiber signal transmission is unaffected by these interferences and can transmit signals at high speed and low loss. For example, in emergency sealing scenarios requiring rapid response, the instructions issued by the signal system can be quickly and accurately transmitted to the filling device and drive component 31 through the optical fiber signal transmission line, enabling them to react in a timely manner and improving sealing efficiency and reliability. The electromagnetic shielding layer set between the power transmission line and the signal transmission line is generally composed of metal foil or metal braided mesh. It can effectively block electromagnetic radiation generated by the power transmission line from leaking into the signal transmission line, and also prevent external electromagnetic interference from entering the signal transmission line.

[0053] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0054] The above are merely specific embodiments of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An underwater tunnel sealing device, characterized in that, include: A floating box type water-retaining gate, wherein both ends of the floating box type water-retaining gate in the height direction are provided with telescopic sealing structures, and the working surface of the telescopic sealing structure can be adjusted in height to protrude out of the floating box type water-retaining gate or at least partially retract into the floating box type water-retaining gate; A support structure is provided on the large surface of the floating box-type water-retaining gate. The support structure includes a driving component and a rotatable support rod. The driving component is connected to the support rod to adjust the angle of the support rod to avoid or contact the inner wall of the tunnel. An umbilical cable, one end of which is connected to the floating sluice gate, and the other end of which is used to connect to a power source and signaling system located on land.

2. The underwater tunnel plugging device according to claim 1, characterized in that, Both ends of the floating box-type water-retaining gate are provided with mounting grooves, and the telescopic sealing structure is installed in the mounting grooves. A filling device is provided inside the floating box-type water-retaining gate. The filling device is connected to the inner cavity of the telescopic sealing structure through a pipeline. The filling device is used to fill the inner cavity of the telescopic sealing structure with a medium.

3. The underwater tunnel sealing device according to claim 2, characterized in that, The filling device includes a medium storage tank, a booster pump, and a flow regulating valve. The booster pump is installed on the pipeline between the medium storage tank and the telescopic sealing structure, and the flow regulating valve is installed at the outlet end of the booster pump.

4. The underwater tunnel sealing device according to claim 2, characterized in that, A cover is fixed inside the mounting groove. The cover has an clearance opening. The telescopic sealing structure has a fixing part and a sealing part on the fixing part. The sealing part passes through the clearance opening. The inner surface of the cover has a guide slope. The clearance opening is provided with guide slopes on all sides. The guide slopes are inclined in a direction that gradually moves away from the mounting groove as they approach the clearance opening.

5. The underwater tunnel sealing device according to claim 4, characterized in that, The inner surface of the cover is provided with a snap protrusion, and the fixing part is provided with a snap groove, in which the snap protrusion is snapped.

6. The underwater tunnel sealing device according to claim 4, characterized in that, The sealing part is configured as a flexible corrugated tube; and / or the free end of the sealing part is provided with a plurality of protruding sealing strips spaced sequentially along the thickness direction of the floating sluice gate.

7. The underwater tunnel sealing device according to claim 2, characterized in that, The free end of the support rod is hinged to a friction block, and the working surface of the friction block is provided with anti-slip texture.

8. The underwater tunnel sealing device according to claim 7, characterized in that, It also includes a housing, which is located on the same side of the floating box-type water-retaining gate as the supporting structure, and the housing is fixedly connected to the floating box-type water-retaining gate. There are multiple supporting rods and multiple driving components, and multiple supporting rods and multiple driving components are arranged at intervals on both sides of the length direction of the housing. The length direction of the housing is perpendicular to the large surface of the floating box-type water-retaining gate.

9. The underwater tunnel sealing device according to claim 8, characterized in that, The drive component is configured as a cylinder and a connecting rod connected to the output end of the cylinder, the other end of the connecting rod being hinged to the support rod.

10. The underwater tunnel sealing device according to any one of claims 2-9, characterized in that, The umbilical cable includes independent power transmission lines and signal transmission lines. The power transmission line is covered with a pressure-resistant protective sleeve, and the signal transmission line is made of optical fiber. An electromagnetic shielding layer is provided between the power transmission line and the signal transmission line. The filling device and the driving component are both electrically connected to one end of the power transmission line, and the other end of the power transmission line is electrically connected to the power source. The filling device and the driving component are also connected to one end of the signal transmission line, and the other end of the signal transmission line is used for electrical connection to the signal system.

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