Lake bottom tunnel waterproof structure
By applying waterproof coating and attaching waterproof membrane to the outer wall of the lake-bottom tunnel, and by setting up a hollow reinforced concrete frame on the outside and installing diversion blocks and a pumping system inside, the problem of corrosion of the waterproof structure of the lake-bottom tunnel under high water pressure was solved, achieving effective waterproofing and timely maintenance.
Patent Information
- Application Number
- CN202520677484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Traditional underwater tunnel waterproofing structures are easily corroded and damaged under high water pressure, making it difficult to provide long-term and effective waterproofing.
Waterproof coating is applied to the outer wall of the concrete tunnel body and waterproof membrane is pasted on it. A hollow precast reinforced concrete frame is set up on the outside, with guide blocks, moisture sensors and water pumps installed inside. Water is extracted and monitored through drainage pipes and one-way valves.
It improved the waterproofing of the lake-bottom tunnel, enabled timely monitoring and drainage of infiltrated water, and extended the service life of the waterproof structure.
Smart Images

Figure CN223825011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel waterproofing technology, and more specifically to a waterproofing structure for a lake bottom tunnel. Background Technology
[0002] Underwater tunnels are passageways built beneath rivers, lakes, seas, and oceans for automobile and train transportation. They provide passageways for railways, urban roads, highways, subways, and various municipal utilities or dedicated pipelines across waterways. Some underwater road tunnels also include bicycle lanes and pedestrian walkways. Their advantages include being unaffected by weather, not disrupting navigation, requiring minimal land for approach roads, and concealing transportation facilities during wartime. The main part of an underwater tunnel is located within the rock and soil layers beneath the river or seabed.
[0003] However, during the implementation of the above technical solutions, at least the following technical problems were discovered.
[0004] Currently, traditional waterproofing measures mainly involve using waterproof concrete. However, these waterproofing structures are easily corroded and damaged under high water pressure, making it difficult to achieve long-term and effective waterproofing. Therefore, we propose a waterproofing structure for lake bottom tunnels. A hollow frame is installed on the outside of the lake bottom tunnel. Water from the lake will preferentially seep into the hollow frame. A water pump is installed inside the hollow frame to extract the water that seeps into the hollow frame, ensuring that the surface of the lake bottom tunnel does not come into contact with water, thereby improving the waterproofing effect of the lake bottom tunnel. Utility Model Content
[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a waterproof structure for lake bottom tunnels to solve the problems mentioned in the background art.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] A waterproof structure for a lakebed tunnel includes: a concrete tunnel body, characterized in that the outer wall of the concrete tunnel body is coated with a first waterproof coating, a protective component is provided on the outside of the concrete tunnel body, a waterproof membrane is pasted on the outer wall of the concrete tunnel body, the protective component includes a hollow frame, the hollow frame is fixedly connected to the outside of the waterproof membrane, the hollow frame is made of hollow precast reinforced concrete, and a flow guide block is provided on one side inside the hollow frame.
[0008] Furthermore, two moisture sensors are provided on the bottom surface inside the hollow frame, two drain pipes are provided inside the hollow frame, a water pump is fixedly connected inside the drain pipe, and two one-way valves are fixedly connected inside the drain pipe.
[0009] Further, the bottom of the concrete tunnel body is provided with a concrete bottom plate, two water baffle plates are arranged between the concrete bottom plate and the hollow frame, and the bottom surface of the concrete bottom plate is provided with a plurality of uplift piles.
[0010] Further, the outer part of the concrete bottom plate and the hollow frame is coated with a second waterproof coating, and the top surface of the hollow frame is provided with a scouring plate.
[0011] Further, the two one-way valves are in the same direction, and the outer wall surface of the drain pipe is provided with a through hole.
[0012] Further, the concrete used for the concrete bottom plate and the hollow frame is P12 or greater than P12.
[0013] Further, the top surface of the scouring plate is arc-shaped, and the waterproof coiled material is arranged between the hollow frame and the concrete tunnel body.
[0014] In summary, the utility model mainly has the following beneficial effects:
[0015] According to the application, the outer wall surface of the concrete tunnel body is coated with a first waterproof coating and a waterproof coiled material is pasted, so that after the waterproof coiled material and the first waterproof coating are arranged on the outer wall surface of the concrete tunnel body, the protective components outside the concrete tunnel body can prevent water from entering the inside of the concrete tunnel body after water seepage, thereby improving the waterproof effect of the surface of the concrete tunnel body,
[0016] When the hollow frame is fixedly connected outside the waterproof coiled material, the hollow frame is made of hollow prefabricated reinforced concrete, so that when water seeps into the hollow frame after long-term use in the river, the water seeped in will first enter the inside of the hollow frame, so that the water sensors on the two sides can timely monitor the water seepage of the hollow frame, thereby facilitating the maintenance of the water seepage part of the hollow frame by the staff in the later period, and when the hollow frame is water seeped, the water pump can pump the water in the hollow frame into the drain pipe, thereby facilitating the drainage of the water seeped in the hollow frame in the later period, thereby avoiding the water from seeping onto the surface of the waterproof coiled material, and thereby improving the waterproof effect of the outside of the concrete tunnel body.
[0017] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the concrete base plate structure of this utility model;
[0021] Figure 3 Here is a schematic diagram of the hollow frame structure of this utility model:
[0022] Figure 4 This is a schematic diagram of the drainage pipe structure of this utility model.
[0023] In the diagram: 1. Concrete tunnel body; 2. First waterproof coating; 3. Waterproof membrane; 4. Hollow frame; 5. Diverter block; 6. Moisture sensor; 7. Drainage pipe; 8. Water pump; 9. One-way valve; 10. Concrete base slab; 11. Water retaining plate; 12. Anti-uplift pile; 13. Second waterproof coating; 14. Anti-scour plate. Detailed Implementation
[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0027] This utility model provides an embodiment of a waterproof structure for a lakebed tunnel, such as... Figures 1-4 As shown, the waterproof structure of the lake bottom tunnel of this application firstly involves applying a first waterproof coating 2 to the outer wall of the concrete tunnel body 1. Protective components are installed on the outside of the concrete tunnel body 1 to protect its exterior. A waterproof membrane 3 is then pasted onto the outer wall of the concrete tunnel body 1. After the waterproof membrane 3 and the first waterproof coating 2 are applied to the outer wall of the concrete tunnel body 1, the protective components on the outside of the concrete tunnel body 1 prevent water from entering the interior of the concrete tunnel body 1 after water seepage, thereby improving the waterproof effect of the surface of the concrete tunnel body 1.
[0028] The protective component includes a hollow frame 4, which is fixedly connected to the outside of the waterproof membrane 3, so that the waterproof membrane 3 can be placed between the hollow frame 4 and the concrete tunnel body 1. This prevents water from seeping into the concrete tunnel body 1 when the hollow frame 4 is leaking after long-term use. The hollow frame 4 is made of hollow precast reinforced concrete, which gives it good compressive strength. A guide block 5 is provided on one side inside the hollow frame 4. The guide block 5 can guide the water inside the hollow frame 4 when it leaks, so as to facilitate the collection of the water seeping into the hollow frame 4 later.
[0029] Two moisture sensors 6 are installed on the bottom surface inside the hollow frame 4. The moisture sensors 6 can detect the moisture inside the hollow frame 4, so that the staff can know in time when water seeps into the hollow frame 4, which makes it easier for the staff to maintain the seeping part of the hollow frame 4 later. Two through holes are opened on the left and right sides of the hollow frame 4. Two drain pipes 7 are installed inside the hollow frame 4. Through holes are opened on the outer wall of the drain pipe 7. A water pump 8 is fixedly connected inside the drain pipe 7. Two one-way valves 9 are fixedly connected inside the drain pipe 7. The two one-way valves 9 are in the same direction, so that the water inside the drain pipe 7 can flow in one direction.
[0030] The bottom of the concrete tunnel body 1 is provided with a concrete base slab 10. Two water-blocking plates 11 are provided between the concrete base slab 10 and the hollow frame 4. The water-blocking plates 11 can block water between the concrete base slab 10 and the hollow frame 4. Several tension piles 12 are provided on the bottom surface of the concrete base slab 10. The concrete used for the concrete base slab 10 and the hollow frame 4 is P12 or larger, which makes the hollow frame 4 and the concrete base slab 10 have good seepage resistance. The exterior of the concrete base slab 10 and the hollow frame 4 is coated with a second waterproof coating 13 to improve the seepage resistance of the outer wall of the concrete base slab 10 and the hollow frame 4. The top surface of the hollow frame 4 is provided with an anti-scouring plate 14. The top surface of the anti-scouring plate 14 is arc-shaped to reduce the impact of water flow on the top surface of the hollow frame 4.
[0031] Working principle:
[0032] The waterproofing structure of this underwater tunnel involves first applying a first waterproof coating 2 and then attaching a waterproof membrane 3 to the outer wall of the concrete tunnel body 1. Once the waterproof membrane 3 and the first waterproof coating 2 are in place on the outer wall of the concrete tunnel body 1, the external protective components prevent water from entering the interior of the concrete tunnel body 1 after seepage, thereby improving the waterproofing effect of the surface of the concrete tunnel body 1.
[0033] After the hollow frame 4 is fixedly connected to the outside of the waterproof membrane 3, since the hollow frame 4 is made of hollow precast reinforced concrete, when water seeps into the hollow frame 4 after long-term use in the river, the seeping water will first enter the interior of the hollow frame 4, so that the moisture sensors 6 on both sides can detect the water seepage of the hollow frame 4 in time. This makes it easier for the staff to repair the seeping parts of the hollow frame 4 later. By setting up a water pump 8, when water seeps into the hollow frame 4, the water pump 8 can pump the water inside the hollow frame 4 into the drain pipe 7, which makes it easier to drain the water seeping into the hollow frame 4 later, thereby preventing water from seeping into the surface of the waterproof membrane 3, thus improving the waterproof effect of the outside of the concrete tunnel body 1.
[0034] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A waterproof structure for a lakebed tunnel, comprising: The concrete tunnel body (1) is characterized in that the outer wall of the concrete tunnel body (1) is coated with a first waterproof coating (2), a protective component is provided on the outside of the concrete tunnel body (1), a waterproof membrane (3) is pasted on the outer wall of the concrete tunnel body (1), the protective component includes a hollow frame (4), the hollow frame (4) is fixedly connected to the outside of the waterproof membrane (3), the hollow frame (4) is made of hollow precast reinforced concrete, and a guide block (5) is provided on one side inside the hollow frame (4).
2. The waterproof structure for a lakebed tunnel according to claim 1, characterized in that, Two moisture sensors (6) are provided on the bottom surface inside the hollow frame (4). Two drain pipes (7) are provided inside the hollow frame (4). A water pump (8) is fixedly connected inside the drain pipe (7). Two one-way valves (9) are fixedly connected inside the drain pipe (7).
3. The waterproof structure for a lakebed tunnel according to claim 1, characterized in that, The bottom of the concrete tunnel body (1) is provided with a concrete base plate (10), and two water-blocking plates (11) are provided between the concrete base plate (10) and the hollow frame (4). Several anti-uplift piles (12) are provided on the bottom surface of the concrete base plate (10).
4. The waterproof structure for a lakebed tunnel according to claim 3, characterized in that, The concrete base plate (10) and the hollow frame (4) are coated with a second waterproof coating (13), and the top surface of the hollow frame (4) is provided with an anti-impact plate (14).
5. A waterproof structure for a lakebed tunnel according to claim 2, characterized in that, The two one-way valves (9) are in the same direction, and the outer wall of the drain pipe (7) is provided with a through hole.
6. The waterproof structure for a lakebed tunnel according to claim 3, characterized in that, The concrete used for both the concrete base plate (10) and the hollow frame (4) is P12 or higher.
7. A waterproof structure for a lakebed tunnel according to claim 4, characterized in that, The top surface of the anti-collision plate (14) is arc-shaped, and the waterproof membrane (3) is located between the hollow frame (4) and the concrete tunnel body (1).