Super-long large-diameter irregular immersed tube waterproof air bag and assembling and disassembling method thereof

Abstract

The invention relates to the field of immersed tube construction, in particular to a super-long large-diameter irregular immersed tube waterproof air bag and an assembling and disassembling method thereof. The super-long large-diameter irregular immersed tube waterproof air bag comprises an air bag body, a sealing device, a water injection pipe and an exhaust pipe; a through hole is formed in the middle of each air bag body, sealing devices are arranged at the two ends of each air bag body, and the multiple air bag bodies divide the immersed tube into multiple cavities. The water injection pipe and the exhaust pipe penetrate through the through holes in the middle of the air bag body respectively, the water injection pipe is connected with the two-way water pump, the exhaust pipe is provided with exhaust branch pipes at the two ends of each cavity respectively, in the water injection sinking process of the sinking pipe, the sinking pipe is divided into the multiple cavities through the air bag body, water in the cavities is injected or pumped out through the water injection pipe, and balance of the sinking pipe is adjusted. And meanwhile, the exhaust pipe is used for exhausting. The interior of the pipeline can be divided into a plurality of cavities, even if the posture of a pipe section loses balance in the water injection sinking process, balance can be recovered by injecting water into the cavities on the raised sides, and larger deformation of the pipeline is effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of immersed tube construction, in particular to an irregular immersed tube air bag for super-long large-diameter immersed tube and a method for assembling and disassembling the same. BACKGROUND

[0002] Long-distance U-shaped immersed tube construction usually adopts the method of injecting water into the tube, allowing it to slowly sink under the action of gravity, and then using mechanical assistance to rotate and fall into the base slot. Due to the strong fluidity of water, direct water injection is difficult to achieve real-time uniform distribution of water in the super-long U-shaped immersed tube. If the internal water of the tube section is slightly unbalanced, it will easily concentrate towards the low point of the tube section, one end will be raised and the other end will be lowered. Under the combined action of gravity and buoyancy, the moment of force is unbalanced, resulting in torsional deformation and causing structural damage. The common practice is to use a large number of steel pontoons to assist floating to reduce the impact of unbalanced distribution of water flow, so that it can be horizontally sunk underwater; then fill the internal space with water, and combine with water surface mechanical assistance to adjust the posture of the tube section, and rotate and position.

[0003] Therefore, there is an urgent need for an irregular immersed tube air bag for super-long large-diameter immersed tube and a method for assembling and disassembling the same. SUMMARY

[0004] In order to avoid the above-mentioned problems existing in the prior art, the purpose of the present application is to provide an irregular immersed tube air bag for super-long large-diameter immersed tube and a method for assembling and disassembling the same, which effectively prevents the pipe from deforming more.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an irregular immersed tube air bag for super-long large-diameter immersed tube, comprising an air bag body, a sealing device, a water injection pipe and an exhaust pipe; The middle part of the air bag body is provided with a through hole, the two ends of the air bag body are provided with the sealing device, and a plurality of air bag bodies are arranged in the internal space of the immersed tube to divide the immersed tube into a plurality of cavities; The water injection pipe and the exhaust pipe respectively pass through the through hole in the middle part of the air bag body, the water injection pipe is connected with a bidirectional water pump, the bidirectional water pump is signal connected with an external control system, and is used for injecting water or pumping water into the cavity; the exhaust pipe is provided with an exhaust branch pipe at each end of each cavity, and is used for exhausting gas in the cavity.

[0006] During the water injection and sinking process of the immersed tube, the immersed tube is divided into a plurality of cavities by the air bag body, water is injected or pumped out of each cavity by the water injection pipe, and the balance of the immersed tube is adjusted, and exhaust is performed through the exhaust pipe.

[0007] The cross section of the air bag body is circular ring shape, the air bag body is in the shape of a cylinder with a hole in the middle after inflation, and there are rubber hoses extending outside the hole.

[0008] The sealing device comprises a sealing sleeve, an outer side of the through hole is provided with an extended rubber tube, the sealing sleeve is sleeved outside the rubber tube, and the rubber tube is filled with polyurethane foam glue.

[0009] The sealing sleeve can be an integrated cylindrical sleeve or a detachable clamping sleeve; the clamping sleeve is composed of two openable semicircular metal tubes, one side of the semicircular metal tube is hinged, and the other side is provided with a matched buckle for fixing when closed.

[0010] The sealing device seals the gap between the air bag body and the water injection pipe and the exhaust pipe penetrating the middle part.

[0011] The air bag body is further provided with a remote control air valve, and the remote control air valve is signal connected with an external control system.

[0012] After the sinking pipe is completed, the remote control air valve is opened to release air, and the air bag body after releasing air is pulled out together with the water injection pipe and the exhaust pipe.

[0013] The water injection pipe is connected with an independent bidirectional water pump by using an independent water injection hose in each cavity, and the part of the water injection pipe penetrating the air bag body is a hard pipe.

[0014] The part of the exhaust pipe penetrating the air bag body is a hard pipe, and each exhaust pipe at the two ends of each cavity is connected with an exhaust branch pipe.

[0015] The exhaust branch pipe is a hose, and the exhaust branch pipe comprises an air inlet, a supporting plate and an automatic valve. The automatic valve comprises a rubber plug, a supporting rod, a spring and a floating ball, one end of the supporting rod is connected with the rubber plug, the other end of the supporting rod is connected with the floating ball, the rubber plug is arranged at the air inlet, one side of the rubber plug is hinged with one side of the air inlet, one end of the spring is connected with the bottom of the supporting rod, and the other end of the spring is connected with the exhaust branch pipe.

[0016] The air inlet is provided below the supporting plate and the counterweight, the supporting plate is a foam plate, and the counterweight is arranged below the foam plate to avoid overturning, so that the air inlet is always exposed on the water surface. The exhaust branch pipe is provided at the end with a valve composed of a conical rubber plug, a floating ball and a spring lever, which can be automatically opened and closed according to the liquid level. When the liquid level rises to a certain degree, the floating ball is lifted to close the conical rubber plug, and when the water level drops, the spring drives the rubber plug to reset to open the air inlet.

[0017] The invention is further provided with a drainage pipe on the exhaust pipe at both ends of the immersed tube, and a one-way valve is arranged on the drainage pipe.

[0018] A soft branch pipe is arranged outside both ends of the immersed tube to discharge a small amount of water occasionally splashed into the air inlet and incompletely penetrated, so as to prevent the water flow from blocking the exhaust pipe. The drainage pipe is a one-way valve that can discharge water, and the one-way valve is hung with a counterweight to reduce the elevation and facilitate drainage.

[0019] The invention is further provided with a safety hook, which comprises a pull rope, a claw and a protective sleeve, the claw is arranged in the protective sleeve, and an elastic element is arranged between the claw and the protective sleeve, a drag hook is arranged at the center of the claw, one end of the pull rope is arranged on the shore, and the other end is connected to the drag hook.

[0020] After the construction is completed, the pull rope is pulled on the shore, the claw is pulled out of the protective sleeve and pierces the air bag body as the pull rope drives the claw and the protective sleeve to tightly adhere to the air bag body, and the pull rope is continuously pulled out. The elastic element connects the claw and the protective sleeve to prevent the protective sleeve from being washed off by the strong water flow during the water injection process, and the air bag body is pierced during the construction process.

[0021] The invention is further provided with a water level gauge and an acceleration sensor, the water level gauge is arranged at both ends of each cavity, the acceleration sensor is arranged on the immersed tube, and the water level gauge and the acceleration sensor are respectively connected to the external control system.

[0022] According to the data collected by the water level gauge and the acceleration sensor, the direction and flow of the bidirectional water pump are automatically adjusted or manually intervened to adjust the posture of the pipeline.

[0023] The invention also relates to a method for assembling and disassembling an ultra-long large-diameter irregular immersed tube water isolation air bag, which comprises the following steps: S1: Before the immersed tube is launched into water, the air bag body is installed in the immersed tube to divide the immersed tube into multiple cavities; S2: The pull rope of the safety hook and the exhaust pipe and the water injection pipe required by the cavity are passed through the through hole of the air bag body, the rubber tube outside the through hole is coated with glue, the inside of the rubber tube and the rope are filled with foaming glue, the sealing sleeve is opened and closed outside the rubber tube before the foaming glue expands, and then the air bag body is inflated, and the next air bag body is installed in reverse; S3: After the installation of the air bag body is completed, the immersed tube is launched; the bidirectional water pump simultaneously injects water into the cavities at the same speed to make the immersed tube sink uniformly, and the sinking speed of the whole pipe section is controlled by controlling the water injection speed during the sinking process; S4: After the immersed tube is immersed underwater, the bidirectional water pump injects water to the middle bending part, and the bidirectional water pump at both ends of the pipe section pumps water, so that the average density of the whole pipe section is kept substantially equal to the water density, and the pipe section is in a floating state in the water, and after the immersed tube is rotated by 90°, the water injection and pumping are stopped; S5: Water is injected into the pipe section again, and the water injection rate in each cavity is calculated in advance according to the form of the pipe section to keep the vertical sinking; S6: After being immersed in the foundation groove, the remote control air valve releases the air in the air bag body in sequence, and if there is a signal transmission problem, the safety hook pierces the air bag body, and the soft tube is pulled on the shore to take out the air bag body, and thus the immersed tube construction is completed.

[0024] In summary, the beneficial effects of the above technical solutions of the present application are as follows: The present application provides a water isolation air bag suitable for large-diameter long-distance immersed tube, which can divide the pipe into multiple cavities, so that even if the posture of the pipe section loses balance during water injection sinking, the water flow concentration point can be dispersed to multiple places, and the balance can be restored by injecting water into the cavity on the high side, effectively preventing the pipe from deforming more. When rotating, water can be injected into only the cavity in the middle part to achieve the effect of controlling rotation without the aid of large machinery. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used for the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a schematic view of the air bag body installed in the immersed tube; Figure 2 It is a schematic view of the air bag body; Figure 3 It is a schematic view of the exhaust branch pipe; Figure 4 It is a schematic view of the drain pipe; Figure 5 It is a schematic view of the safety hook.

[0027] In the drawings, the meanings of the reference signs are as follows: 100. Submerged tube; 200. Airbag body; 210. Rubber hose; 300. Water injection pipe; 400. Exhaust pipe; 410. Exhaust branch pipe; 411. Support plate; 412. Counterweight; 413. Air inlet; 414. Rubber plug; 415. Support rod; 416. Float; 417. Drain pipe; 418. One-way valve; 500. Sealing sleeve; 600. Safety hook; 601. Protective casing; 602. Spike; 603. Pull hook; 604. Elastic element. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of the present invention.

[0029] Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0030] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0031] Example 1: like Figures 1-5 As shown, this is a preferred embodiment of the present invention, an ultra-long diameter irregular submerged pipe water-proof airbag, including an airbag body 200, a sealing device, a water injection pipe 300 and an exhaust pipe 400; The airbag body 200 has a through hole in the middle and the airbag body 200 has a sealing device at both ends. Several airbag bodies 200 are arranged inside the submerged tube 100, dividing the submerged tube into multiple cavities. The water injection pipe 300 and the exhaust pipe 400 pass through the through hole in the middle of the airbag body 200. The water injection pipe 300 is connected to a bidirectional water pump, which is connected to an external control system for injecting or pumping water into the cavity. The exhaust pipe 400 has an exhaust branch pipe 410 at each end of each cavity for discharging gas from the cavity.

[0032] During the process of water injection and sinking of the immersed tube 100, the airbag body 200 divides the immersed tube 100 into multiple cavities. Water is injected into or extracted from each cavity through the water injection pipe 300 to adjust the balance of the immersed tube 100. At the same time, air is vented through the vent pipe 400.

[0033] Combination Figure 2 As shown, the cross-section of the airbag body 200 is circular. After the airbag body is inflated, it is shaped like a cylinder with a hole in the middle, and there is a rubber tube protruding from the outside of the hole.

[0034] The sealing device comprises a sealing sleeve 500, an outer side of the through hole is provided with an extended rubber tube 210, the sealing sleeve 500 is sleeved outside the rubber tube 210, and polyurethane foam is filled between the sealing sleeve 500 and the rubber tube 210.

[0035] The sealing sleeve 500 can adopt an integrated cylindrical sleeve or a clamping dismounting clamping sleeve; the clamping sleeve is composed of two openable semicircular metal tubes, one side of the semicircular metal tube is hinged, and the other side is provided with a matched buckle, and the buckle is buckled and fixed when closed. The sealing device seals the gap between the air bag body 200 and the water injection pipe 300 and the exhaust pipe 400 penetrating the middle part.

[0036] The air bag body 200 is also provided with a remote control air valve, and the remote control air valve is signal connected with an external control system. After the sinking pipe is finished, the remote control air valve is opened to release gas, and the air bag body 200 after releasing gas is pulled out together with the water injection pipe 300 and the exhaust pipe 400.

[0037] The water injection pipe 300 is connected with an independent bidirectional water pump by using an independent water injection hose in each cavity, and the part penetrating the air bag body 200 is a hard pipe.

[0038] The part penetrating the air bag body 200 of the exhaust pipe 400 is a hard pipe, and each exhaust pipe 400 at the two ends of each cavity is connected with an exhaust branch pipe 410.

[0039] Combined Figure 3 As shown, the exhaust branch pipe 410 adopts a hose, the exhaust branch pipe 410 comprises an air inlet 413, a supporting plate 411 and an automatic valve; the supporting plate 411 is arranged below the air inlet 413, the supporting plate 411 is provided with a counterweight 412 at the bottom, and the air inlet 413 is provided with an automatic valve; The automatic valve comprises a rubber plug 414, a supporting rod 415, a spring and a floating ball 416, one end of the supporting rod 414 is connected with the rubber plug 414, the other end is connected with the floating ball 416, the rubber plug 414 is arranged at the air inlet 413, one side of the rubber plug 414 is hinged with one side of the air inlet 413, one end of the spring is connected with the bottom of the supporting rod 414, and the other end of the spring is connected with the exhaust branch pipe 410.

[0040] Supporting plate 411 and counterweight 412 are arranged below air inlet 413. Supporting plate 411 is made of foam plate, and counterweight 412 is arranged below the foam plate to avoid overturning, so that air inlet 413 is always exposed above the water surface. A valve composed of conical rubber plug 414, floating ball 416 and spring lever is arranged at the end of exhaust branch pipe 410, which can be automatically opened and closed according to the liquid level. When the water level rises to a certain degree, floating ball 416 is lifted to close conical rubber plug 414, and when the water level drops, spring drives rubber plug 414 to reset to open air inlet 413.

[0041] In combination Figure 4 As shown in the drawings, the exhaust pipes 400 at both ends of the immersed tube 100 are also provided with drain pipes 417, and the drain pipes 417 are provided with one-way valves 418. A soft branch pipe is arranged outside the immersed tube 100 at both ends to discharge a small amount of water occasionally splashed into and incompletely penetrated into the air inlet 413, so as to prevent water flow from blocking the exhaust pipe. The one-way valves 418 arranged on the drain pipes 417 are water-out valves, and the one-way valves 418 are hung with counterweights to reduce the elevation and facilitate drainage.

[0042] As Figure 5 shown, the super-long large-diameter irregular immersed tube water isolation air bag also includes a safety grappling hook 600, the safety grappling hook 600 includes a pull rope, a grappling claw 602 and a protective sleeve 601, the grappling claw 602 is arranged in the protective sleeve 601, and an elastic element 604 is arranged between the grappling claw 602 and the protective sleeve 601, a drag hook 603 is arranged at the center of the grappling claw 602, one end of the pull rope is arranged on the shore, and the other end is connected to the drag hook 603.

[0043] After the construction is completed, the pull rope is pulled on the shore, the grappling claw 602 is pulled out of the protective sleeve 601 together with the protective sleeve 601 and is tightly attached to the air bag body 200, and the grappling claw 602 is pulled out of the protective sleeve 601 by the drag hook 603 with the continuous pulling of the pull rope, and the air bag body 200 is pierced. The elastic element connects the grappling claw 602 and the protective sleeve 601, prevents the protective sleeve 601 from being washed off by strong water flow during the water injection process, and pierces the air bag body 200 during the construction process.

[0044] The super-long large-diameter irregular immersed tube water isolation air bag also includes a water level gauge and an acceleration sensor, the water level gauge is arranged at both ends of each cavity, and the acceleration sensor is arranged on the immersed tube 100. The water level gauge and the acceleration sensor are respectively connected to an external control system.

[0045] According to the data collected by the water level gauge and the acceleration sensor, the direction and flow of the bidirectional water pump are automatically adjusted or manually intervened to adjust the posture of the pipeline.

[0046] Example 2: The application also relates to a method for assembling and disassembling an ultra-long large-diameter irregular immersed tube water-stop air bag, which comprises the following steps. S1: before launching into water, the air bag body 200 is installed in the immersed tube 100, and the immersed tube 100 is divided into multiple cavities; Double-end water injection can be used to improve efficiency, or single-end water injection can be used to simplify construction. When single-end water injection is used, the rubber tube 210 in the middle hole of the air bag body 200 at the end of the pipe section is tied and sealed, and the next air bag body 200 is installed after being inflated.

[0047] S2: the exhaust pipe 400, the water injection pipe 300 and the safety hook 600 are passed through the through hole of the air bag body 200, the rubber tube 210 outside the through hole is coated with glue, the inside of the rubber tube 210 is filled with foaming glue, the sealing sleeve 500 is opened and closed outside the rubber tube 210 before the foaming glue expands, and then the air bag body 200 is inflated, and the next air bag body 200 is installed in reverse; S3: after the air bag body 200 is completely installed, the immersed tube 100 is launched; the double-way water pump simultaneously injects water into the cavities at the same speed, so that the immersed tube 100 uniformly sinks, and the sinking speed of the whole pipe section is controlled by controlling the water injection speed during the sinking process; S4: after the immersed tube 100 sinks into water, the double-way water pump injects water into the middle bending part, and the double-way water pumps at both ends of the pipe section pump water, the average density of the whole pipe section of the immersed tube 100 is kept substantially equal to the water density during the process, so that the pipe section is in a floating state in water, and the immersed tube 100 is rotated by 90 degrees, and then the water injection and pumping are stopped; S5: water is injected into the pipe section again, and the water injection rate in each cavity under this state is calculated in advance according to the form of the pipe section, so that the immersed tube 100 keeps sinking vertically; S6: after sinking into the foundation trench, the remote control air valve releases the air in the air bag body 200 in sequence, if there is a signal transmission problem, the safety hook 600 pierces the air bag body 200, the hose is pulled on the shore, and the air bag body 200 is taken out, and thus the immersed tube construction is completed.

[0048] The above only describes the preferred embodiments of the application, and the protection scope of the application is not limited to the above-described embodiments, and any technical scheme falling within the idea of the application belongs to the protection scope of the application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the application are also regarded as the protection scope of the application.

Claims

1. An ultra-long large diameter irregular immersed tube water-tight airbag, characterized in that, The airbag body, the sealing device, the water injection pipe and the exhaust pipe; The middle part of the airbag body is provided with a through hole, and the two ends of the airbag body are provided with the sealing device, and a plurality of airbag bodies are arranged in the interior of the immersed tube to divide the immersed tube into a plurality of cavities; The water injection pipe and the exhaust pipe respectively pass through the through hole in the middle part of the airbag body, the water injection pipe is connected with a bidirectional water pump, the bidirectional water pump is signal connected with an external control system, and is used for injecting water or pumping water into the cavity; the exhaust pipe is provided with an exhaust branch pipe at each end of each cavity, and is used for exhausting gas in the cavity.

2. An ultra-long large diameter irregular immersed tube water-tight airbag according to claim 1, characterized in that, The sealing device comprises a sealing sleeve, an outer side of the through hole is provided with an extended rubber tube, the sealing sleeve is sleeved outside the rubber tube, and the inside of the rubber tube is filled with foaming glue.

3. An ultra-long large diameter irregular immersed tube water-tight airbag according to claim 2, characterized in that, The airbag body is further provided with a remote control air valve, and the remote control air valve is signal connected with an external control system.

4. An ultra-long large diameter irregular immersed tube water-barrier airbag according to claim 1, characterized in that, The water injection pipe is connected with an independent bidirectional water pump by using an independent water injection hose in each cavity, and the part of the water injection pipe passing through the airbag body is a hard pipe.

5. An ultra-long large diameter irregular immersed tube water-barrier airbag according to claim 1, characterized in that, The part of the exhaust pipe passing through the airbag body is a hard pipe, and each exhaust pipe at the two ends of each cavity is connected with an exhaust branch pipe.

6. An ultra-long large diameter irregular immersed tube water-barrier airbag according to claim 5, characterized in that, The exhaust branch pipe adopts a hose, and the exhaust branch pipe comprises an air inlet, a supporting plate and an automatic valve; the supporting plate is arranged below the air inlet, the bottom of the supporting plate is provided with a counterweight, and the air inlet is provided with the automatic valve; The automatic valve comprises a rubber plug, a supporting rod, a spring and a floating ball, one end of the supporting rod is connected with the rubber plug, the other end of the supporting rod is connected with the floating ball, the rubber plug is arranged at the air inlet, one side of the rubber plug is hinged with one side of the air inlet, one end of the spring is connected with the bottom of the supporting rod, and the other end of the spring is connected with the exhaust branch pipe.

7. An ultra-long large diameter irregular immersed tube water-barrier airbag according to claim 6, characterized in that, The exhaust pipes at the two ends of the immersed tube are further provided with a drain pipe, and the drain pipe is provided with a one-way valve.

8. An ultra-long large diameter irregularly shaped pipe sinking water-tight air bag according to claim 1, wherein, The super-long large-diameter irregular immersed tube water isolation airbag further comprises a safety hook, the safety hook comprises a pull rope, a claw and a protective sleeve, the claw is arranged in the protective sleeve, an elastic element is arranged between the claw and the protective sleeve, a drag hook is arranged at the center of the claw, and one end of the pull rope is arranged on the shore, and the other end of the pull rope is connected with the drag hook.

9. An ultra-long large diameter irregular immersed tube water-barrier airbag according to claim 1, characterized in that, The super-long large-diameter irregular immersed tube water isolation airbag further comprises a water level meter and an acceleration sensor, the water level meter is arranged at the two ends of each cavity, the acceleration sensor is arranged on the immersed tube, and the water level meter and the acceleration sensor are signal connected with an external control system.

10. A method for assembling and disassembling an ultra-long large-diameter irregular immersed tube water-stop air bag, characterized in that, The method comprises the following steps: S1: before the immersed tube is launched into water, the airbag body is installed in the immersed tube to divide the immersed tube into a plurality of cavities; S2: the exhaust pipe, the water injection pipe and the pull rope of the safety hook required by the cavity pass through the through hole of the airbag body, the rubber tube outside the through hole is coated with glue, the inside of the rubber tube is filled with foaming glue, the sealing sleeve is opened and closed and locked outside the rubber tube before the foaming glue expands, then the airbag body is inflated, and the next section of the airbag body is installed in reverse; S3: After the installation of the air bag body is completed, the sinking pipe is launched; the double-way water pump injects water into the cavity at the same speed, so that the sinking pipe sinks uniformly, and in the sinking process, the sinking speed of the whole pipe section is controlled by controlling the water injection speed; S4: After the sinking pipe sinks into the water, the double-way water pump injects water into the middle bending part, and the double-way water pump at both ends of the pipe section pumps water, and in the process, the average density of the whole section of the sinking pipe and the water density remain basically equal, so that the pipe section is in a floating state in the water, and after the sinking pipe rotates 90°, the water injection and pumping are stopped; S5: Water is injected into the pipe section again, and the water injection rate in each cavity in this state should be calculated in advance according to the form of the pipe section, so that it keeps sinking vertically; S6: After sinking into the foundation trench, the remote control air valve releases the air in the air bag body in order, and if there is a signal transmission problem, the safety hook pierces the air bag body, and the soft pipe is pulled on the shore to take out the air bag body, and thus the sinking pipe construction is completed.

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