A composite water-stopping system for ship lock structural joints and its construction method

Abstract

The present invention discloses a composite waterstop system for a ship lock structural joint and a construction method thereof. The waterstop system comprises a surface waterstop system and a middle waterstop system. The surface waterstop system comprises a polyurea coating, a tire base fabric, an elastic filler, a V-shaped groove, and a rubber rod. The V-shaped groove is located at the top of the structural joint. The rubber rod is disposed in the V-shaped groove. The elastic filler is filled in the V-shaped groove. The polyurea coating is applied to the elastic filler, and the tire base fabric is composited within the polyurea coating. The middle waterstop system comprises a groutable rubber waterstop, a grouting pipe, a filter-type membrane bag, a fixing plate, a detachable grouting joint, and a compression-sealing assembly. The groutable rubber waterstop is connected to the fixing plate at both ends. The end opening of the filter-type membrane bag is sealed to the end of the groutable rubber waterstop. The detachable grouting joint is disposed on the fixing plate and extends out of the filter-type membrane bag. A compression-sealing assembly is provided at the junction with the filter-type membrane bag. One end of the grouting pipe is connected to the filter-type membrane bag. The composite waterstop system has a simple structure, is easy to install, has strong integrity, and is low in cost.

Description

Technical Field

[0001] The invention relates to a ship lock water-stopping structure, in particular to a ship lock structural joint composite water-stopping system and a construction method thereof. Background Art

[0002] Water transportation is an important part of modern transportation and plays a vital role in modern economic development.

[0003] As an important link in the dredging of waterways, the safety and smooth operation of locks are related to the development of the entire water transportation and even the entire national economy.

[0004] Structural joints are typically installed between lock structures such as the gate, chamber, and guide wall; between new and old buildings; and at locations with sudden changes in foundation soil elevation to prevent structural damage caused by internal and external factors such as thermal expansion and contraction, foundation settlement, and earthquakes. As the weakest link in the entire engineering structure, structural joints play a crucial role in ensuring the normal operation of the lock and protecting it from the adverse effects of various factors.

[0005] Waterstopping in structural joints is a crucial step in preventing water leakage in ship lock structures. Traditionally, rubber waterstops or copper sheets are used to seal structural joints. These materials have inherent flaws. Under the influence of temperature expansion and uneven settlement of adjacent structural sections, the waterstop structure is prone to oxidation corrosion, leading to water leakage. Furthermore, the concrete surrounding the waterstop material may also have quality defects (such as honeycombs, holes, and bubbles), damage the concrete due to ship impacts, or form leakage channels due to water pressure erosion, significantly impacting the long-term safe operation of the ship lock structure.

[0006] The primary difficulty in addressing leakage in shiplock structural joints lies in the multiple factors that can affect them, including repeated fluctuations in high water pressure, differential deformation of the concrete structure, and severe damage and aging of waterstop materials, which can lead to waterstop failure. In these situations, repair or replacement of waterstops is necessary. However, replacing waterstops is not only difficult and complex, requiring multiple steps and is extremely tedious, but also requires significant time, manpower, and financial resources, making this method unsuitable for long-term treatment of shiplock structural joints. Therefore, a new waterstop system with a simple structure, excellent durability, and overall newness, as well as excellent waterstopping effectiveness, is urgently needed for shiplock structural joints. Summary of the Invention

[0007] In view of the deficiencies of the existing technology, the present invention provides a novel composite water-stopping system for ship lock structural joints with simple structure and low cost, its construction method and ship lock, which can effectively solve the water-stopping problem of ship lock structural joints with large water head.

[0008] The technical solution adopted in the present invention is:

[0009] A composite water-stopping system for ship lock structural joints, used for water-stopping the structural joint between the left structural section and the right structural section, including a surface water-stopping system and a middle water-stopping system;

[0010] The surface water-stopping system includes a polyurea coating, a tire base fabric, an elastic filler, a V-shaped groove and a rubber rod;

[0011] A V-shaped groove is formed in the left and right structural sections, with the bottom of the V-shaped groove located at the top of the structural seam; the rubber rod is disposed at the bottom of the V-shaped groove; the elastic filler is filled in the V-shaped groove, and a portion of the elastic filler protrudes outside the V-shaped groove; the polyurea coating is applied to the elastic filler and the left and right structural sections, and a layer of tire base fabric is compounded within the polyurea coating;

[0012] The middle layer water stop system includes a groutable rubber water stop, a grouting pipe, a filter membrane bag, a fixing plate and a detachable grouting joint;

[0013] The groutable rubber waterstop is used to close the structural seam, and its two ends extend into the left structural section and the right structural section respectively and are connected to the fixing plate;

[0014] The end opening of the anti-filtration membrane bag is sealed in the end rubber of the groutable rubber waterstop, and the detachable grouting joint is provided on the fixed plate and its end extends out of the anti-filtration membrane bag;

[0015] One end of the grouting pipe is connected to the reverse filtration membrane bag, and the other end extends to the outside of the left structural section or the right structural section. The grouting pipe is used to inject slurry into the reverse filtration membrane bag to fill the gap.

[0016] Furthermore, the composite waterstop system of the lock structural joint also includes an outer waterstop system, which includes a copper waterstop plate, an upper caulking plate and a lower caulking plate; the upper caulking plate and the lower caulking plate are respectively installed on both sides of the structural joint, and the copper waterstop plate is installed between the upper caulking plate and the lower caulking plate, and the copper waterstop plate is located on the side of the groutable rubber waterstop away from the V-groove.

[0017] Furthermore, the ship lock structure joint composite waterstop system also includes a leakage detection system, which includes a temperature-sensitive optical fiber installed near the filter membrane bag and in contact with the groutable rubber waterstop;

[0018] The temperature-sensitive optical fiber is also installed between the upper caulking plate and the lower caulking plate and is located between the copper waterstop sheet and the groutable rubber waterstop. The temperature-sensitive optical fiber is used to sense temperature changes caused by water seepage.

[0019] Furthermore, the temperature-sensitive optical fiber is sequentially covered with a metal tube, a fiber mesh tube, a yarn sleeve and a filter membrane.

[0020] Furthermore, a surface interface groove is provided on the surface of the left structural segment and the right structural segment, the V-shaped groove is opened on the bottom wall of the surface interface groove, and an arc groove is provided between the two side walls and the bottom wall of the surface interface groove respectively, and the polyurea coating is applied to the bottom wall and the two ends extend into the arc groove respectively.

[0021] Furthermore, the bottom wall length L of the surface interface groove satisfies the following formula:

[0022]

[0023] τ u - Bond strength between polyurea coating and surface layer;

[0024] σ——tensile strength of polyurea coating;

[0025] δ——the thickness of polyurea coating;

[0026] d——preset surplus length.

[0027] Furthermore, the polyurea coating is covered with an elastic protective cover, the bottom layer of the elastic protective cover has the same shape as the surface structure of the polyurea coating, and the top layer of the elastic protective cover is flat.

[0028] The present invention also provides a construction method for a ship lock structure joint water-stopping system, comprising the steps of:

[0029] Perform steel cage binding construction, install the groutable rubber waterstop (3) in the middle of the structural joint (7), connect the grouting pipe to the grouting joint on the steel plate at the end of the groutable rubber waterstop, and fix the temperature-sensing optical fiber in the rubber ring on the groutable rubber waterstop;

[0030] Pour concrete on both sides to form surface interface grooves and V-shaped grooves;

[0031] After the concrete is poured and cured to reach the specified strength, grouting construction is carried out, and the expandable polymer is filled into the filter membrane bag through the grouting pipe;

[0032] Install the rubber rod at the bottom of the V-groove by hot melt or geo-nail, fill the V-groove with elastic filler, and design the top filler into an arc shape during construction;

[0033] Apply polyurea by hand scraping, applying 0.5-1mm each time, and after applying 2mm, cover with a layer of tire base cloth, and then continue applying polyurea until the thickness of the polyurea coating reaches 4mm;

[0034] After the polyurea coating reaches the specified strength through curing, a layer of elastic protective cover is installed on the coating surface.

[0035] Furthermore, after step (1) and before step (2), the method further includes the following steps: installing an upper caulking plate and a lower caulking plate at the reserved structural joint, and aligning the copper nose of the copper water stop with the middle seam of the caulking plate.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] Compared with the traditional structural joints that often use a single water-stopping method of rubber belts or copper sheets, the present invention adopts a double or even triple composite water-stopping system. The surface layer is composed of polyurea coating-elastic filler, and the physical advantages of polyurea such as high tensile strength, high elongation at break, strong adhesion, and excellent waterproof and anti-corrosion properties are utilized to achieve a good surface water-stopping effect; at the same time, the elastic filler has the characteristics of high plasticity, strong deformation adaptability, excellent aging resistance, outstanding anti-seepage performance, and strong bonding with concrete, and is easy to construct, so it is very suitable for anti-seepage treatment of lock structure joints; the V-groove is designed as a deep concave structure, and the entire surface is designed into an Ω shape. Traditional surfaces usually use steel strips, bolts and other anchoring systems to form a flat type. This design will result in poor deformation ability and a short service life due to problems such as unevenness of concrete and corrosion of the inner side of the cover plate by the filler. The Ω-shaped surface layer realizes the organic combination of chemical technology bonding coating and physical technology embedded anti-peeling anchoring system, so that the anti-seepage coating and elastic filler are basically completely bonded to the concrete, greatly enhancing the integrity and anti-seepage properties of the structure. At the same time, the coating is not higher than the concrete on both sides, and a protective cover plate is covered on the outside of the coating. This can not only effectively enhance the deformation resistance of the surface of the structural joint, but also effectively prevent the impact of ship collision.

[0038] The middle layer is equipped with a buried groutable rubber waterstop, and bolts for fixing the rubber waterstop are set at the ends of the structural joints. The grouting pipe uses a rubber hose. Unlike the steel grouting pipe, which needs to be installed in the steel cage before passing through the steel cage to connect to the waterstop, the hose can be combined with the waterstop into a whole and directly fixed to the steel cage, which is easy to install. At the same time, it also does not have the problem of low survival rate of steel grouting pipes. The end of the rubber waterstop is connected to a filter-type membrane bag wrapped around the steel plate. Compared with the traditional grouting method, the use of geotextile tape greatly enhances the integrity of the structure, improves the grouting efficiency, and has a more excellent density after grouting. The filter-type membrane bag is connected to the grouting pipe, and epoxy slurry is injected into the geotextile tape through the grouting pipe. The geotextile tape expands through grouting and then densifies the gaps between the concrete, improving the waterstop effect of the middle layer.

[0039] The final layer is a copper waterstop. This double-layer oxide film forms through the oxidation reaction of pure copper with air. Both oxides are difficult to react with weak acids and bases, giving the waterstop strong corrosion resistance. The copper waterstop also exhibits excellent ductility, adapting well to concrete deformation. Polyethylene closed-cell foam panels are used as upper and lower caulking panels to wrap the copper waterstop, further densifying the structural joints and enhancing the waterstop effect.

[0040] In addition to the three-layer progressive anti-seepage structure, the present invention also features a temperature-sensitive fiber optic leak detection system. This system utilizes the temperature changes caused by leaking water, which are displayed as temperature mutation points. Based on the location of the temperature mutation point and the severity of the temperature change, the leak can be located and quantitatively analyzed. The fiber is covered with a yarn sheath and a filter membrane. The yarn sheath significantly enhances the fiber's ability to detect water seepage, improving the sensitivity of the monitoring system. The filter membrane, wrapped around the yarn sheath, reduces damage to the fiber from mortar during construction and improves its activity. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic cross-sectional view of a new double structural seam composite water-stopping system according to an embodiment of the present invention.

[0042] Figure 2 This is a cross-sectional schematic diagram of a triple new structural joint composite water-stopping system according to an embodiment of the present invention.

[0043] Figure 3 This is a schematic cross-sectional view of a surface water-stopping system according to an embodiment of the present invention.

[0044] Figure 4 It is a three-dimensional schematic diagram of the middle layer water-stopping system according to an embodiment of the present invention.

[0045] Figure 5 This is a schematic cross-sectional view of the outer water-stopping system according to an embodiment of the present invention.

[0046] Figure 6 Schematic diagram of a leakage detection system according to an embodiment of the present invention.

[0047] Figure 7 This is a three-dimensional schematic diagram of the temperature-sensing optical fiber structure according to an embodiment of the present invention.

[0048] Figure 8 This is a three-dimensional schematic diagram of a groutable rubber waterstop according to an embodiment of the present invention.

[0049] Figure 9 This is a three-dimensional schematic diagram of the optical fiber installation distribution according to an embodiment of the present invention.

[0050] 1. Polyurea coating; 2. Elastic filler; 3. Groutable rubber waterstop; 4. Left structural section; 5. Right structural section; 6. Grouting pipe; 7. Structural joint; 8. Copper waterstop; 9. V-groove; 10. Upper caulking plate; 11. Lower caulking plate; 12. Elastic protective cover; 13. Stainless steel waterstop bolt; 14. Anti-filter membrane bag; 15. Rubber rod; 16. Steel plate; 17. Tire base fabric; 18. Temperature-sensing optical fiber; 19. Metal tube; 20. Fiber mesh tube; 21. Yarn sleeve; 22. Filter membrane; 23. Laser emitter; 24. Detection unit; 25. Surface interface groove; 26. Removable grouting joint; 27. Compression-sealing assembly; 28. Rubber ring DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0052] Example 1

[0053] This example provides a new composite waterstop system for ship lock structural joints, including a double-layer waterstop system or a triple-layer waterstop system.

[0054] Among them, the double-layer water-stopping system includes a surface water-stopping system, a middle water-stopping system and a leakage detection system; the three-layer water-stopping system is an outer water-stopping system based on the double-layer water-stopping system.

[0055] The surface waterstop system includes a polyurea coating, a base fabric, elastic filler, V-grooves, rubber rods, and surface interface grooves. This system mitigates damage to the surface of the structural joint caused by ship impacts through the construction of a pre-reserved surface interface groove. The system leverages the excellent properties of materials like polyurea to enhance the surface waterstop performance of the structural joint, improving the surface's corrosion resistance and durability.

[0056] The mid-level waterstop system includes a groutable rubber waterstop, grouting pipes, filter membrane bags, steel plates, removable grouting joints, and a compression-seal assembly. This system addresses deformation caused by concrete stress fluctuations and accommodates settlement deformation in structural joints. By grouting the gap between the gate chamber concrete and the rubber waterstop, it prevents leakage in hydraulic structures and enhances the mid-level waterstop performance of structural joints.

[0057] The outer waterstop system consists of a copper waterstop sheet, upper caulking plates, and lower caulking plates. This system utilizes copper oxidation to form oxides, which prevent leakage from the interface between pressurized water and concrete. This mitigates expansion and contraction deformation of the concrete joints and relative deformation across the joints, enhancing the structure's oxidation and compressive resistance.

[0058] The leak detection system consists of a temperature-sensing optical fiber, a laser transmitter, and a detection unit. The system uses the temperature-sensing optical fiber to detect temperature changes at the leak site, thereby pinpointing the leak and enabling timely repair measures.

[0059] Example 2

[0060] Reference Figures 1 to 9 As shown, the present invention provides a novel composite waterstop system for ship lock structural joints, including a double-layer waterstop system or a triple-layer waterstop system. The double-layer waterstop system includes a surface waterstop system, a middle waterstop system, and a leakage detection system; the triple-layer waterstop system combines the double-layer waterstop system with an outer waterstop system. This invention utilizes the synergistic effect of multiple waterstop components and temperature-sensitive fiber optic leakage detection to achieve both waterstopping and anti-seepage detection requirements for ship lock structural joints.

[0061] The surface water-stopping system includes a polyurea coating 1 , a tire base fabric 17 , an elastic filler 2 , a V-shaped groove 9 , a rubber rod 15 and a surface interface groove 25 .

[0062] The V-groove 9 is located at the top of the structural joint 7. A rubber rod 15 is installed at the bottom of the V-groove 9 via hot melt. The V-groove 9 is filled with an elastic filler 2 with a flat convex arc cross-section. The top of the elastic filler 2 is coated with a polyurea coating 1. A layer of tire base fabric 17 is laminated within the polyurea coating 1. The polyurea coating 1 is applied to the concrete interface on both sides of the V-groove 9 to a predetermined bond length. An elastic protective cover 12 is installed on the polyurea coating 1. The surface interface groove 25 has stepped sides, and the contact surface between the polyurea coating 1 and the concrete on both sides is an arc-shaped concave surface. The polyurea coating 1 is applied to the concrete in the surface interface groove 25. The length L of the surface interface groove can be determined based on the bonding properties of the polyurea coating 1 and the concrete:

[0063]

[0064] τ u ——Bond strength between polyurea and surface layer (MPa);

[0065] L - bonding length between polyurea and single-sided concrete (mm);

[0066] σ——tensile strength of polyurea (MPa);

[0067] δ——polyurea thickness (mm);

[0068] d——residual length (mm).

[0069] The top of the elastic filler 2 protrudes from the V-shaped groove 9 and includes a main body portion located in the V-shaped groove 9 and a protruding arc portion. At the connection between the arc portion and the main body portion, the area of ​​the arc portion is slightly larger than that of the main body portion, so that the arc portion partially extends to the bottom wall of the surface interface groove.

[0070] The polyurea coating 1 is arc-shaped in the middle and has flat structures on both sides. The polyurea coating 1 is roughly Ω-shaped.

[0071] The middle layer water stop system includes a groutable rubber water stop, a grouting pipe, a filter membrane bag, a steel plate, a detachable grouting joint and a compression-sealing assembly.

[0072] Among them, the groutable rubber waterstop 3 is buried in the middle of the structural joint 7, and the end of the groutable rubber waterstop 3 is connected to a steel plate 16. The anti-filtration membrane bag 14 is arranged on the outside of the steel plate 16, and the end opening of the anti-filtration membrane bag 14 is sealed in the rubber at the end of the groutable rubber waterstop 3. A detachable grouting joint 26 is arranged on the end steel plate 16 of the groutable rubber waterstop 3. The end of the detachable grouting joint 26 extends out of the anti-filtration membrane bag 14. A compression-sealing component 27 is provided at the junction of the detachable grouting joint 26 and the anti-filtration membrane bag 14 to avoid local leakage. Before the concrete is poured, a rubber hose is selected as the grouting pipe 6, and the anti-filtration membrane bag 14 is connected to the grouting pipe 6 as a whole and fixed to the steel cage. Since the hose does not affect the closure of the concrete formwork, it can be allowed to extend out of the surface of the concrete, so there is no need to excavate the concrete before grouting. When the concrete pouring is completed, grouting construction is carried out immediately, and the expandable polymer is injected into the filter membrane bag 14 through the grouting pipe 6 at a certain pressure to fill the gap tightly.

[0073] In the illustrated embodiment, the compression-sealing assembly 27 adopts a sealing rod. In other embodiments, the compression-sealing assembly 27 may adopt other structures as long as it can achieve a sealing effect.

[0074] The outer water-stop system includes copper water-stop plates, upper caulking plates and lower caulking plates.

[0075] The copper waterstop 8 is installed between the upper caulking plate 10 and the lower caulking plate 11, with the copper nose of the copper waterstop 8 aligned with the centerline of the structural joint 7. The copper waterstop 8 is installed between the upper and lower caulking plates 10, 11. The upper and lower caulking plates 10, 11 are tailored to the shape and size of the structural joint 7. During installation, the lower caulking plate 11 is installed first. The appropriate number of copper waterstops 8 is then welded to the circumference of the structural joint 7. Finally, the upper caulking plate 10 is installed.

[0076] The leakage detection system includes a temperature-sensing optical fiber, a laser transmitter and a detection unit.

[0077] The temperature-sensitive optical fiber 18 comprises a metal tube 19, a fiber mesh tube 20, a yarn sheath 21, and a filter membrane 22. Multiple rubber rings 28 are arranged on the inner side of the end of the groutable rubber waterstop 3, and the temperature-sensitive optical fiber 18 is fixed within the rubber rings 28. The temperature-sensitive optical fiber 18 is installed below the connection between the anti-filtration membrane bag 14 and the steel plate 16, between the upper caulking plate 10 and the lower caulking plate 11, and below the groutable rubber waterstop 3. The temperature-sensitive optical fiber 18 is pre-buried with the multiple waterstop system. A laser transmitter 23 is installed above the ship lock wall and is remotely connected to the monitoring system unit 24 via wireless transmission. To improve the accuracy of water leakage detection, a temperature-sensitive optical fiber 18 is buried in the concrete along with a groutable rubber waterstop 3. The installation position is at the connection between the filter-type membrane bag and the steel plate, in contact with the waterstop. Once a leak occurs at the seam of the bottom plate, the seepage water directly passes vertically over the temperature-sensitive optical cable, causing a significant temperature change in the temperature-sensitive optical cable, which can sensitively detect whether a leak has occurred and the size of the leak. Example 3:

[0078] This embodiment provides an actual construction and installation process, based on the novel composite water-stopping system for ship lock structural joints described in Example 2, including the following steps:

[0079] Step 1: Installation of water-stop components and temperature-sensing optical fibers

[0080] After the steel cage binding construction is completed, the groutable rubber waterstop 3 is installed in the middle of the structural joint 7, the grouting pipe 6 is connected to the grouting joint on the steel plate at the end of the groutable rubber waterstop 3, and the temperature-sensitive optical fiber 18 is fixed in the rubber ring on the groutable rubber waterstop 3 to form an integral module. If it is a triple waterstop structure, it is necessary to install a copper waterstop 8 on the outer layer of the structural joint. According to the form and size of the structural joint 7, the upper caulking plate 10 and the lower caulking plate 11 are cut. When installing, the lower caulking plate 11 is installed first, and then the corresponding number of copper waterstops 8 are selected according to the circumference of the structural joint 7 for welding. Finally, the upper caulking plate 10 is installed, and the copper nose of the copper waterstop 8 needs to be aligned with the middle seam of the caulking plate. After the waterstop component is installed, it is calibrated to ensure that the installation and welding are in place, and then prepare for the pouring of concrete on both sides. Ensure that the waterstop component is not damaged during pouring.

[0081] Step 2: Grouting construction

[0082] Before the concrete is poured, a rubber hose is used as a grouting pipe 6. The filter membrane bag 14 is connected to the grouting pipe 6 as a whole and fixed to the steel cage. The grouting pipe 6 is left on the concrete surface. After the concrete is cured and the strength meets the specification requirements, grouting construction is carried out. The filter membrane bag 14 is filled with polymer through the grouting pipe 6, thereby expanding the membrane bag and compacting the gap between it and the concrete.

[0083] Step 3: Surface water-stop system installation

[0084] According to the design requirements, the surface interface groove 25 and V-shaped groove 9 of a specific shape are cast. After the concrete is poured and cured to the specified strength, the surface water-stopping system is installed. Before embedding the water-stopping material, the SR matching primer should be brushed twice on the dry concrete. Since the elastic filler has the characteristic of condensing and hot melting, the water-stopping material should be fully heated on site to make it in a hot-melt state before filling to improve its plasticity and viscosity. The viscosity of the filler is used to fix the rubber rod 15 at the bottom of the V-shaped groove as a buffer between the filler and the caulking plate. During construction, the top filler is designed to be Ω-shaped. After the filler is filled, apply the interface agent on the concrete and filler on both sides of the V-shaped groove. After cooling, start applying polyurea, applying about 0.5-1mm each time. After applying 2mm, cover with a layer of tire base cloth 17. The polyurea coating is applied to a total of about 4mm. After the polyurea coating 1 is cured to the specified strength, install a layer of elastic protective cover 12 on the coating surface.

[0085] Step 4: Leak Detection System Installation

[0086] Connect the temperature-sensitive optical fiber 18 to the detection unit, and emit laser light to the temperature-sensitive optical fiber 18 through the laser emitter 23. The laser light is transmitted to the detection unit 24 of the lock office through the temperature-sensitive optical fiber 18 to detect the temperature change along the temperature-sensitive optical fiber and analyze whether leakage occurs and the location of the leakage.

[0087] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite water-stopping system for ship lock structural joints, used for water-stopping the structural joint between the left structural section and the right structural section, characterized in that: Including surface water-stop system and middle water-stop system; The surface water-stopping system includes a polyurea coating, a tire base fabric, an elastic filler, a V-shaped groove and a rubber rod; A V-shaped groove is formed between the left and right structural sections, with the bottom of the V-shaped groove located at the top of the structural seam; the rubber rod is disposed at the bottom of the V-shaped groove; the elastic filler fills the V-shaped groove, with a portion of the elastic filler protruding from the V-shaped groove; the polyurea coating is applied to the elastic filler and the left and right structural sections, with a layer of tire base fabric being composited within the polyurea coating; The middle layer water stop system includes a groutable rubber water stop, a grouting pipe, a filter membrane bag, a fixing plate, a detachable grouting joint and a compression-sealing assembly; The groutable rubber waterstop is used to close the structural seam, and its two ends extend into the left structural section and the right structural section respectively and are connected to the fixing plate; The end opening of the anti-filtration membrane bag is sealed in the end rubber of the groutable rubber waterstop, the detachable grouting joint is provided on the fixed plate and its end extends out of the anti-filtration membrane bag, and a compression-sealing component is provided at the junction of the detachable grouting joint and the anti-filtration membrane bag; One end of the grouting pipe is connected to the reverse filter membrane bag, and the other end extends to the outside of the left structural section or the right structural section. The grouting pipe is used to inject slurry into the reverse filter membrane bag to fill the gap; The composite water-stopping system for the ship lock structural joint also includes an outer water-stopping system, which includes a copper water-stopping sheet, an upper caulking plate, and a lower caulking plate; the upper caulking plate and the lower caulking plate are respectively installed on both sides of the structural joint, the copper water-stopping sheet is installed between the upper caulking plate and the lower caulking plate, and the copper water-stopping sheet is located on the side of the groutable rubber water-stop strip away from the V-shaped groove; The ship lock structure joint composite water-stopping system also includes a leakage detection system, which includes multiple temperature-sensitive optical fibers installed near the anti-filtration membrane bag and in contact with the groutable rubber waterstop; the temperature-sensitive optical fibers are also installed between the upper caulking plate and the lower caulking plate and between the copper waterstop sheet and the groutable rubber waterstop, and are used to sense temperature changes caused by water seepage; The surfaces of the left and right structural segments are provided with surface interface grooves, the V-shaped grooves are opened on the bottom wall of the surface interface grooves, and arc grooves are respectively provided between the two side walls and the bottom wall of the surface interface grooves, and the polyurea coating is applied to the bottom wall and the two ends extend into the arc grooves respectively; The bottom wall length L of the surface interface groove satisfies the following formula: τ u - Bond strength between polyurea coating and surface layer; — tensile strength of polyurea coating; - thickness of the polyurea coating; d——preset surplus length.

2. A ship lock structural joint water-stopping system according to claim 1, characterized in that: The temperature-sensitive optical fiber is sequentially covered with a metal tube, a fiber mesh tube, a yarn sleeve and a filter membrane.

3. The ship lock structural joint water-stopping system according to claim 1, characterized in that: The polyurea coating is covered with an elastic protective cover. The bottom layer of the elastic protective cover has the same shape as the surface structure of the polyurea coating, and the top layer of the elastic protective cover is a plane.

4. A construction method for a ship lock structural joint water-stopping system according to any one of claims 1 to 3, characterized in that: Including steps: Perform steel cage binding construction, install the groutable rubber waterstop (3) in the middle of the structural joint (7), connect the grouting pipe to the grouting joint on the steel plate at the end of the groutable rubber waterstop, and fix the temperature-sensing optical fiber in the rubber ring on the groutable rubber waterstop; Pour concrete on both sides to form surface interface grooves and V-shaped grooves; After the concrete is poured and cured to reach the specified strength, grouting construction is carried out, and the expandable polymer is filled into the filter membrane bag through the grouting pipe; Install the rubber rod at the bottom of the V-groove by hot melt or geo-nail, fill the V-groove with elastic filler, and design the top filler into an arc shape during construction; Apply polyurea by hand scraping, applying 0.5-1mm each time, and after applying 2mm, cover with a layer of tire base cloth, and then continue applying polyurea until the thickness of the polyurea coating reaches 4mm; After the polyurea coating reaches the specified strength through curing, a layer of elastic protective cover is installed on the coating surface.

5. The construction method according to claim 4, characterized in that: After step (1) and before step (2), the method further includes the following steps: installing an upper caulking plate and a lower caulking plate at the reserved structural joint, and aligning the copper nose of the copper water stop plate with the middle seam of the caulking plate.

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