A face dam underwater surface sealing cover plate edge sealing structure

Abstract

This utility model belongs to the field of underwater water-stopping repair construction technology for panel dams, and particularly relates to an underwater surface water-stopping cover plate sealing structure for panel dams. It includes a surface water-stopping cover plate and sealing components. Pressure strips are installed on the two long sides of the surface water-stopping cover plate, and anchor bolts are installed on the pressure strips. There are two sets of sealing components, and the two sets of sealing components are respectively installed on the two pressure strips. The sealing components include an inverted U-shaped groove template, which covers the pressure strips. The two long side areas of the U-shaped groove template are divided into an embedded part and a fixing part. The embedded part is embedded to the bottom of the pressure strip, and the fixing part is fixed to the concrete base surface by a fixing component. Sealing agent is injected into the U-shaped groove template. This utility model strengthens the fixing effect of the surface water-stopping cover plate on the base concrete by using the U-shaped groove template, and effectively ensures the sealing quality of the surface water-stopping cover plate underwater by injecting sealing agent into the inside of the U-shaped groove template.

Description

Technical Field

[0001] This utility model belongs to the field of underwater water-stopping repair construction technology for panel dams, and particularly relates to an underwater surface water-stopping cover sealing structure for panel dams. Background Technology

[0002] As an important hydraulic structure, the core of the seepage prevention system of concrete-faced dams is the concrete face and the surface water-stop structure. The surface water-stop structure directly affects the seepage prevention performance and long-term stability of the dam. During operation, due to factors such as water erosion, temperature deformation, and material aging, leakage problems easily occur at the joint between the surface water-stop cover and the concrete base, requiring underwater repair. Traditional underwater sealing methods mainly rely on divers manually filling sealing materials or directly injecting sealing agents, but these methods have the following significant drawbacks: First, the complex underwater environment makes the sealing agent susceptible to water flow disturbance, leading to incomplete filling and the formation of leakage channels; second, formwork fixing often relies on drilling and anchoring into the concrete base, which not only damages the face structure but also makes it difficult to guarantee drilling accuracy, easily resulting in poor adhesion between the formwork and the base; third, there is a lack of effective monitoring methods for the sealing process, making it impossible to judge the filling status of the sealing agent in real time, easily leaving cavities or air holes, affecting sealing durability.

[0003] While some existing technologies employ prefabricated molding strips or bolt anchoring structures combined with edge sealing agents, these technologies are primarily designed for surface construction and lack underwater adaptability. For instance, adhesive-based fixing methods are limited by poor underwater curing conditions and low bond strength; while conventional bolt-anchored templates can improve stability, they require frequent drilling, exacerbating damage to the base concrete.

[0004] This utility model designs an underwater surface water-stopping cover edge sealing structure for panel dams to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An underwater surface waterproofing cover plate sealing structure for a panel dam includes a surface waterproofing cover plate and sealing components. Pressure strips are installed on the two long sides of the surface waterproofing cover plate, and anchor bolts are installed on the pressure strips. One end of each anchor bolt passes through the surface waterproofing cover plate and is fixed to the concrete base surface. The lower end face of the pressure strip is tightly attached to the upper end face of the surface waterproofing cover plate. Two sets of sealing components are provided, each set installed on one of the two pressure strips. Each sealing component includes an inverted U-shaped groove template covering the pressure strips. The two long sides of the U-shaped groove template are divided into an embedded part and a fixed part. The embedded part is embedded to the bottom of the pressure strip, and the fixed part is fixed to the concrete base surface by a fixing component. Sealing agent is injected into the interior of the U-shaped groove template.

[0006] As a preferred embodiment, the fixing component includes several steel strips installed on the upper end of the U-shaped channel template. One end of the steel strip is fixedly connected to the U-shaped channel template, and the other end of the steel strip extends to the top of the fixing part and is threaded with a fastening bolt. The lower end of the fastening bolt abuts against the upper surface of the fixing part, and the lower surface of the fixing part abuts against the concrete base surface.

[0007] As a preferred option, the steel strips are welded and fixed to the U-shaped channel template.

[0008] As a preferred option, rubber waterstops are provided on the bottom surfaces of the two long sides of the surface waterstop cover plate, one end of the anchor bolt passes through the rubber waterstop, and the rubber waterstop is bonded to the base concrete.

[0009] As a preferred option, an observation hole is provided at the top of the U-shaped groove template, and a rubber plug is provided on the observation hole.

[0010] Compared with existing technologies, the advantages of this utility model are: 1. This utility model strengthens the fixing effect of the surface waterstop cover plate on the base concrete by using a U-shaped groove template, and can effectively ensure the sealing quality of the surface waterstop cover plate underwater by injecting sealing agent into the inside of the U-shaped groove template.

[0011] 2. This utility model deforms the U-shaped channel template by tightening bolts, causing the fixing part to bend downward and press against the concrete surface, increasing the stress points between the U-shaped channel template and the concrete, strengthening the fixing effect of the U-shaped channel template, thereby improving the stability of the surface waterstop cover plate. Moreover, this fixing method does not require additional drilling in the concrete, reducing the damage to the base concrete during the installation of the surface waterstop cover plate.

[0012] 3. The observation hole designed in this utility model allows divers to check the fullness of the sealing agent filling underwater when the side sealing agent is poured into the U-shaped groove template. When the sealing agent overflows at the observation hole, it indicates that the inner side of the U-shaped groove template is filled tightly. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the present invention.

[0014] Fig. 2 This is a front view schematic diagram of this utility model.

[0015] Fig. 3 This is a schematic diagram of the edge-sealing component of this utility model.

[0016] The labels in the diagram are as follows: 1. Surface waterstop cover plate; 2. Pressure strip; 3. Anchor bolt; 4. Rubber waterstop strip; 10. Edge sealing assembly; 11. U-shaped channel template; 12. Embedded part; 13. Fixing part; 14. Steel strip; 15. Fastening bolt; 16. Observation hole; 17. Rubber plug. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following embodiments or drawings are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0018] A sealing structure for the underwater surface waterproof cover plate of a panel dam, such as Figs. 1 to 3 As shown, it includes a surface water-stop cover plate 1 and an edge sealing assembly 10. Pressure strips 2 are installed on the two long sides of the surface water-stop cover plate 1. The pressure strips 2 are made of stainless steel. Anchor bolts 3 are installed on the pressure strips 2. One end of the anchor bolt 3 passes through the surface water-stop cover plate 1 and is fixed to the concrete base surface. The lower end face of the pressure strip 2 is in close contact with the upper end face of the surface water-stop cover plate 1. There are two sets of edge sealing components 10, and the two sets of edge sealing components 10 are respectively installed on two pressure strips 2. The edge sealing component 10 includes an inverted U-shaped channel template 11, which covers the pressure strip 2. The two long side areas of the U-shaped channel template 11 are divided into an embedded part 12 and a fixing part 13. The embedded part 12 is embedded into the bottom of the pressure strip 2, and the fixing part 13 is fixed to the concrete base surface by a fixing component. The U-shaped channel template 11 is filled with edge sealing agent. The pressure strip 2 and anchor bolt 3 provide a basic fixing function for the surface waterstop cover plate 1, while the inner part 12 of the U-shaped channel template 11 is fixed between the pressure strip 2 and the surface waterstop cover plate 1. The U-shaped channel template 11 is fixed to the concrete base surface through the fixing components, thereby strengthening the fixing effect of the surface waterstop cover plate 1 on the base concrete. By injecting sealing agent into the inside of the U-shaped channel template 11, the sealing quality of the surface waterstop cover plate 1 underwater can be effectively guaranteed.

[0019] like Fig. 3 As shown, the fixing component includes several steel strips 14 installed on the upper end of the U-shaped channel template 11. One end of the steel strip 14 is welded and fixedly connected to the U-shaped channel template 11, and the other end of the steel strip 14 extends to the upper part of the fixing part 13 and is threaded with a fastening bolt 15. The lower end of the fastening bolt 15 abuts against the upper end face of the fixing part 13, and the lower end face of the fixing part 13 abuts against the concrete base surface. By rotating the fastening bolt 15, it moves downward relative to the steel strip 14, and the lower end of the fastening bolt 15 abuts against the upper end of the fixing part 13. Since the inner part 12 is embedded in the bottom of the pressure strip 2, the U-shaped channel template 11 keeps its position fixed. After the fixing part 13 receives a downward force, the U-shaped channel template 11 will undergo slight deformation, and the fixing part 13 will be bent downward. This makes the fixing part 13, which was originally only in contact with the concrete surface, abut against the concrete surface. Therefore, before the fixing part 13 separates from the concrete surface by deformation at other angles, the U-shaped channel template 11 will not shift its position due to external force. By strengthening the fixing of the U-shaped channel template 11, the stability of the surface waterstop cover 1 is improved. Compared with the traditional fixing method of the surface waterstop cover 1, the number of holes drilled in the concrete is reduced, and the damage to the base concrete is reduced.

[0020] like Fig. 3 As shown, rubber waterstops 4 are provided on the bottom surfaces of the two long sides of the surface waterstop cover plate 1. One end of the anchor bolt 3 passes through the rubber waterstop 4, and the rubber waterstop 4 is bonded to the base concrete. The rubber waterstop 4 can not only increase the fixing effect of the surface waterstop cover plate 1 on the base concrete, but also play a waterproofing role on the inner side of the surface waterstop cover plate 1.

[0021] The top of the U-shaped channel template 11 has an observation hole 16, and a rubber plug 17 is installed on the observation hole 16. When the side sealing agent is poured into the U-shaped channel template 11, the observation hole 16 allows the diver to check the fullness of the sealing agent filling underwater. When the sealing agent overflows at the observation hole 16, it indicates that the inside of the U-shaped channel template 11 is filled tightly. The rubber plug 17 can then be fixed at the observation hole 16 to complete the sealing agent pouring operation inside the U-shaped channel template 11.

[0022] Installation steps of surface waterproof cover plate 1 and edge sealing assembly 10: 1. Installation of surface waterstop cover plate 1: At the designated underwater location, the diver combines the surface waterstop cover plate 1 and the rubber waterstop strip 4 together and places them on the base concrete. Pressure strips 2 are attached to the upper surfaces of the two long sides of the surface waterstop cover plate 1. An underwater drilling rig is used to drill anchor holes in the base concrete through the pressure strips 2 and the surface waterstop cover plate 1. Epoxy anchoring agent is filled into the anchor holes. Then, the anchor bolts 3 are inserted into the anchor holes through the pressure strips 2 and the surface waterstop cover plate 1 for anchoring.

[0023] 2. Installation of edge sealing component 10: On the ground, first weld the steel strip 14 to the U-shaped channel template 11. The end of the steel strip 14 above the fixing part 13 is provided with a threaded hole for the fastening bolt 15. The diver takes the assembled U-shaped channel template 11 underwater and inserts the inner part 12 of the U-shaped channel template 11 into the bottom of the pressure strip 2. The fixing part 13 is attached to the base concrete. Then, the fastening bolt 15 is passed through the threaded hole and tightened to form internal force to compress the fixing part 13, so that the fixing part 13 of the U-shaped channel template 11 is tightly attached to the base concrete.

[0024] 3. Underwater injection of sealing agent: The bottom of the U-shaped channel template 11 is sealed with flexible filler. Then, the sealing agent is poured from the top of the U-shaped channel template 11. The diver observes the overflow of the sealing agent through the observation hole 16 underwater. When material overflows through the observation hole 16, it indicates that the sealing agent has been injected to this height. The rubber stopper 17 is inserted into the observation hole 16 to block it. The observation holes 16 are observed and blocked from bottom to top until the entire U-shaped channel template 11 is filled with sealing agent.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A sealing structure for an underwater surface waterproofing cover plate of a panel dam, characterized in that: The system includes a surface water-stop cover plate (1) and an edge sealing assembly (10). The surface water-stop cover plate (1) has pressure strips (2) installed on its two long sides. Anchor bolts (3) are installed on the pressure strips (2). One end of the anchor bolts (3) passes through the surface water-stop cover plate (1) and is fixed to the concrete base. The lower end of the pressure strip (2) is close to the upper end of the surface water-stop cover plate (1). The edge sealing assembly (10) consists of two sets, and the two sets of edge sealing assemblies (10) are installed on the two pressure strips (2) respectively. The edge sealing assembly (10) includes an inverted U-shaped groove template (11). The U-shaped groove template (11) covers the pressure strip (2). The two long side areas of the U-shaped groove template (11) are divided into an embedded part (12) and a fixed part (13). The embedded part (12) is embedded to the bottom of the pressure strip (2). The fixed part (13) is fixed to the concrete base through a fixing assembly. The U-shaped groove template (11) is filled with an edge sealing agent.

2. The underwater surface sealing cover plate edge sealing structure for a panel dam according to claim 1, characterized in that: The fixing component includes several steel strips (14) installed on the upper end of the U-shaped channel template (11). One end of the steel strip (14) is fixedly connected to the U-shaped channel template (11), and the other end of the steel strip (14) extends to the upper part of the fixing part (13) and is threaded with a fastening bolt (15). The lower end of the fastening bolt (15) abuts against the upper end face of the fixing part (13), and the lower end face of the fixing part (13) abuts against the concrete base surface.

3. The underwater surface sealing cover plate edge sealing structure for a panel dam according to claim 2, characterized in that: The steel strip (14) is welded and fixed to the U-shaped channel template (11).

4. The underwater surface waterproofing cover sealing structure for a panel dam according to claim 1, characterized in that: The surface waterstop cover plate (1) has rubber waterstop strips (4) on the bottom surface of its two long sides. One end of the anchor bolt (3) passes through the rubber waterstop strip (4), and the rubber waterstop strip (4) is bonded to the base concrete.

5. The underwater surface sealing cover plate edge sealing structure for a panel dam according to claim 1, characterized in that: The top of the U-shaped groove template (11) is provided with an observation hole (16), and a rubber stopper (17) is provided on the observation hole (16).

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