Dam foundation drainage structure of gravity dam

Abstract

The utility model discloses a gravity dam foundation drainage structure which comprises a gallery bottom plate, drainage ditches are formed in the outer portion of the gallery bottom plate, drainage holes are formed in the gallery bottom plate, a concrete anchor block is fixedly connected to the top of the gallery bottom plate, a dredging mechanism is arranged at the top of the concrete anchor block, and the dredging mechanism is connected with the drainage ditches. And an adjusting mechanism is arranged at the top of the corridor bottom plate. According to the gravity dam foundation drainage structure, the rotating handle is rotated to drive the second magnet to move to influence the first magnet, so that the first magnet impacts the inner wall of the fixed shell, the interior of the water pipe vibrates, the blocking condition of fine particles is relieved, the dredging effect is achieved under the assistance of water pressure, operation is simple, and the drainage effect is good. And meanwhile, after the rotating handle is loosened, the rotating handle can automatically and reversely rotate under the action of the torsional spring, so that the operation of the operator is more convenient, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower and water conservancy projects, in particular to a gravity dam foundation drainage structure. Background Art

[0002] Gravity dams are a common type of dam, often used for water storage and power generation. They maintain stability by using their own weight to resist water pressure. Typically constructed of materials such as concrete or masonry, gravity dams offer excellent flood resistance and structural stability. When designing and constructing gravity dams, engineers consider factors such as geological conditions, hydrological conditions, and engineering economics to ensure their safety and reliability.

[0003] For example, a Chinese utility model patent (CN 215210883 U) discloses a gravity dam foundation drainage structure, which states: "By setting up a reasonable and feasible concrete gravity dam foundation drainage hole processing structure, the seepage pressure and leakage rate of the dam foundation drainage holes are accurately measured to ensure the long-term safe operation of the dam." It also states: "Allowing the dam foundation drainage holes to drain freely will further aggravate the patency of the leakage channel over time, and fine particles in the geological defective parts of the dam foundation may be gradually carried out, resulting in prominent problems with the seepage stability of the dam foundation; although it is known that the water outflowing from the drainage holes has a certain seepage pressure, it cannot be accurately measured, so it is difficult to accurately calculate the dam foundation uplift pressure coefficient, which in turn affects the accuracy of the dam body stability review of this dam section; it is impossible to accurately measure the leakage rate of individual drainage holes with large water output, and it is difficult to monitor its changing development trend over time in real time." Technical problems.

[0004] To sum up, it can be seen that the existing technology uses drainage holes with large water volume for sealing and pressure gauge detection to solve the problem of seepage stability caused by fine particles in the geological defect parts of the dam foundation being gradually carried out and the problem of inaccurate measurement of seepage pressure. However, this method has the following technical problems: fine particles will enter the inside of the drainage pipe, and may cause blockage of water flow, thereby affecting the detection results of the pressure gauge, and making the calculation of the dam foundation uplift pressure coefficient inaccurate. For this reason, this application proposes a gravity dam foundation drainage structure to provide a new technical solution to solve the technical problems mentioned in the above patents. Utility Model Content

[0005] Based on this, it is necessary to provide a gravity dam foundation drainage structure to address the above technical problems. The fixed block is driven to rotate by turning the rotating handle, and the movement of the second magnet on the fixed block affects the first magnet, so that the first magnet hits the inner wall of the fixed shell, thereby causing vibration inside the water pipe, thereby slowing down the blockage of fine particles. With the assistance of water pressure, the dredging effect is achieved. The simple operation makes it convenient for the operator to clean the inside of the water pipe. At the same time, when the rotating handle is loosened after rotation, the rotating handle will automatically rotate in the opposite direction under the action of the torsion spring, making the operator's operation more convenient and improving the cleaning efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A gravity dam foundation drainage structure is used to prevent the clogging of a drainage pipe by fine particles.

[0008] The gravity dam foundation drainage structure specifically includes:

[0009] The corridor comprises a floor plate, a drainage ditch is provided on the outside of the floor plate, a drainage hole is provided on the inside of the floor plate, a concrete anchor block is fixedly connected to the top of the floor plate, a dredging mechanism is provided on the top of the floor plate, an adjustment mechanism is provided on the top of the floor plate, a water pipe is fixedly connected to the inside of the drainage hole, the water pipe is fixedly connected to the inside of the concrete anchor block, a pressure gauge is fixedly connected to the inside of the water pipe, and a valve is fixedly installed on the inside of the water pipe;

[0010] The dredging mechanism includes a movable shell movably connected to the top of the concrete anchor pier, the interior of the movable shell is rotatably connected to a rotating shaft, and one end of the rotating shaft located outside the movable shell is fixedly connected to a rotating handle.

[0011] As a preferred embodiment of the gravity dam foundation drainage structure provided by the present invention, the exterior of the rotating shaft is fixedly connected to a fixed block, and the inner wall of the fixed block is fixedly connected to a second magnet.

[0012] As a preferred embodiment of the gravity dam foundation drainage structure provided by the utility model, a torsion spring is provided on the outside of the rotating shaft, one end of the torsion spring is fixedly connected to the inner wall of the movable shell, and the other end of the torsion spring is fixedly connected to the outer wall of the fixed block.

[0013] As a preferred embodiment of the gravity dam foundation drainage structure provided by the utility model, the interior of the water pipe is fixedly connected to a fixed shell, the inner wall of the fixed shell is fixedly connected to a return spring, the end of the return spring away from the fixed shell is fixedly connected to a rubber sleeve, and the inner wall of the rubber sleeve is fixedly connected to a first magnet.

[0014] As a preferred embodiment of the gravity dam foundation drainage structure provided by the utility model, the adjustment mechanism includes a threaded rod fixedly connected to the top of the corridor bottom plate, and the outside of the movable shell is fixedly connected to a connecting plate, which is sleeved on the outside of the threaded rod.

[0015] As a preferred embodiment of the gravity dam foundation drainage structure provided by the utility model, the outside of the threaded rod and the upper and lower sides of the connecting plate are respectively threadedly connected with limiting blocks, the top of the concrete pier is fixedly connected with a fixing rod, and the movable shell is slidably connected to the outside of the fixing rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The gravity dam foundation drainage structure provided by the utility model drives the fixed block to rotate by turning the rotating handle, and then affects the first magnet through the movement of the second magnet on the fixed block, so that the first magnet hits the inner wall of the fixed shell, thereby causing the inside of the water pipe to vibrate, thereby alleviating the blockage of fine particles. With the assistance of water pressure, the dredging effect is achieved, and the simple operation makes it convenient for the operator to clean the inside of the water pipe. At the same time, when the rotating handle is loosened after rotation, the rotating handle will automatically rotate in the opposite direction under the action of the torsion spring, thereby making the operator's operation more convenient and improving the cleaning efficiency.

[0018] The gravity dam foundation drainage structure provided by the utility model changes the height of the movable shell by moving the movable shell along the direction of the fixed rod and the threaded rod, thereby changing the second magnet to correspond to the first magnet that affects the movement. The movable shell can then be adjusted according to the location of the blockage to improve the overall cleaning and dredging effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the gravity dam foundation drainage structure provided by the utility model;

[0021] Figure 2 A schematic diagram of the cross-sectional structure of the gallery bottom plate of the gravity dam foundation drainage structure provided by the utility model;

[0022] Figure 3 A schematic diagram of the internal structure of the water pipe of the gravity dam foundation drainage structure provided by the utility model;

[0023] Figure 4 A schematic diagram of the internal structure of the movable shell of the gravity dam foundation drainage structure provided by the utility model;

[0024] Figure 5 A schematic diagram of the internal structure of the fixed shell of the gravity dam foundation drainage structure provided by the utility model;

[0025] Figure 6 A schematic diagram of the cross-sectional structure of the fixed shell of the gravity dam foundation drainage structure provided by the utility model;

[0026] Figure 7 This is an enlarged structural diagram of the adjustment mechanism of the gravity dam foundation drainage structure provided by the utility model.

[0027] The markings in the figure are as follows:

[0028] 1. Corridor floor; 2. Drainage ditch; 3. Drainage hole; 4. Concrete anchor pier; 5. Water pipe; 6. Pressure gauge; 7. Valve; 8. Dredging mechanism; 9. Adjustment mechanism; 10. Fixed housing; 11. Return spring; 12. Rubber sleeve; 13. First magnet; 14. Movable housing; 15. Rotating shaft; 16. Rotating handle; 17. Fixed block; 18. Second magnet; 19. Torsion spring; 20. Fixed rod; 21. Threaded rod; 22. Connecting plate; 23. Limiting block. DETAILED DESCRIPTION

[0029] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] As mentioned in the background art, fine particles entering the drainage pipe may cause water flow blockage, thereby affecting the detection result of the pressure gauge and making the calculation of the dam foundation uplift pressure coefficient inaccurate.

[0031] In order to solve this technical problem, the utility model provides a gravity dam foundation drainage structure, which is applied to the gravity dam foundation drainage structure to prevent fine particles inside the drainage pipe from being blocked.

[0032] Specifically, please refer to Figures 1-4 The gravity dam foundation drainage structure specifically includes:

[0033] The corridor comprises a floor plate 1, a drainage ditch 2 is provided on the outside of the corridor floor plate 1, a drainage hole 3 is provided on the inside of the corridor floor plate 1, a concrete anchor 4 is fixedly connected to the top of the corridor floor plate 1, a dredging mechanism 8 is provided on the top of the concrete anchor 4, an adjustment mechanism 9 is provided on the top of the corridor floor plate 1, a water pipe 5 is fixedly connected to the inside of the drainage hole 3, the water pipe 5 is fixedly connected to the inside of the concrete anchor 4, a pressure gauge 6 is fixedly connected to the inside of the water pipe 5, and the pressure gauge 6 is a special type of pressure detection gauge with anti-interference ability. A valve 7 is fixedly installed on the inside of the water pipe 5;

[0034] The dredging mechanism 8 includes a movable shell 14 movably connected to the top of the concrete anchor pier 4. The interior of the movable shell 14 is rotatably connected to a rotating shaft 15, and one end of the rotating shaft 15 located outside the movable shell 14 is fixedly connected to a rotating handle 16.

[0035] The gravity dam foundation drainage structure provided by the present invention drives the fixed block 17 to rotate by rotating the rotating handle 16, and then affects the first magnet 13 through the movement of the second magnet 18 on the fixed block 17, so that the first magnet 13 hits the inner wall of the fixed shell 10, thereby causing the inside of the water pipe 5 to vibrate, thereby alleviating the blockage of fine particles. With the assistance of water pressure, the dredging effect is achieved, and the simple operation facilitates the operator to clean the inside of the water pipe 5. At the same time, when the rotating handle 16 is released after rotation, the rotating handle 16 will automatically rotate in the opposite direction under the action of the torsion spring 19, thereby making the operator's operation more convenient and improving the cleaning efficiency.

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example 1:

[0038] Please refer to Figures 1-6 , a gravity dam foundation drainage structure, comprising:

[0039] The outside of the rotating shaft 15 is fixedly connected to a fixed block 17, and the inner wall of the fixed block 17 is fixedly connected to a second magnet 18. The second magnet 18 cooperates with the first magnet 13 to generate vibration inside the water pipe 5, thereby relieving blockage, avoiding perforation of the water pipe 5, reducing water leakage on the water pipe 5, and improving the stability of the device.

[0040] A torsion spring 19 is provided on the outside of the rotating shaft 15. The torsion spring 19 can be deformed as the rotating handle 16 is rotated. When the rotating handle 16 is released, the torsion spring 19 releases the rotational force, driving the second magnet 18 to move again, reducing the number of turns required by the operator, thereby making the device more convenient. One end of the torsion spring 19 is fixedly connected to the inner wall of the movable housing 14, and the other end of the torsion spring 19 is fixedly connected to the outer wall of the fixed block 17.

[0041] The interior of the water pipe 5 is fixedly connected to a fixed shell 10, and the inner wall of the fixed shell 10 is fixedly connected to a return spring 11. The end of the return spring 11 away from the fixed shell 10 is fixedly connected to a rubber sleeve 12. The rubber sleeve 12 protects the first magnet 13, reduces damage to the first magnet 13, and thereby extends the service life of the first magnet 13. The inner wall of the rubber sleeve 12 is fixedly connected to the first magnet 13.

[0042] Through the above-mentioned structural design, when the inside of the water pipe 5 needs to be cleaned, the rotating handle 16 is turned, thereby driving the rotating shaft 15 to rotate, and then the fixed block 17 drives the second magnet 18 to move. During this process, the torsion spring 19 is deformed. When the second magnet 18 faces the position of the first magnet 13, the first magnet 13 is attracted by the second magnet 18 and approaches the second magnet 18, causing the reset spring 11 to deform and be compressed. As the second magnet 18 continues to move, the suction force of the second magnet 18 on the first magnet 13 decreases. Under the action of the elastic force of the reset spring 11, the first magnet 13 collides with the inner wall of the fixed shell 10, thereby causing the inside of the water pipe 5 to vibrate, thereby loosening the blocked fine particles, thereby achieving a clearing effect.

[0043] Example 2:

[0044] The gravity dam foundation drainage structure provided in Example 1 is further optimized. Specifically, Figure 7 As shown, the adjustment mechanism 9 includes a threaded rod 21 fixedly connected to the top of the corridor floor 1 , and a connecting plate 22 is fixedly connected to the outside of the movable housing 14 , and the connecting plate 22 is sleeved on the outside of the threaded rod 21 .

[0045] Limiting blocks 23 are respectively threadedly connected to the outside of the threaded rod 21 and located on the upper and lower sides of the connecting plate 22. The top of the concrete anchor pier 4 is fixedly connected to the fixing rod 20, and the movable shell 14 is slidably connected to the outside of the fixing rod 20.

[0046] Through the above-mentioned structural design, when the height of the movable housing 14 needs to be changed due to the blocking position, the limiting block 23 above the connecting plate 22 is rotated to the appropriate position, and the movable housing 14 is pulled to keep the movable housing 14 in the appropriate position. Then, the limiting block 23 below the connecting plate 22 is rotated so that the limiting block 23 below limits the falling of the movable housing 14, and the movable housing 14 can be firmly fixed in the appropriate position.

Claims

1. A gravity dam foundation drainage structure, comprising a gallery bottom plate (1), characterized in that: A drainage ditch (2) is provided on the outside of the gallery bottom plate (1), a drainage hole (3) is provided on the inside of the gallery bottom plate (1), a concrete anchor block (4) is fixedly connected to the top of the gallery bottom plate (1), a dredging mechanism (8) is provided on the top of the gallery bottom plate (1), an adjustment mechanism (9) is provided on the top of the gallery bottom plate (1), a water pipe (5) is fixedly connected to the inside of the drainage hole (3), the water pipe (5) is fixedly connected to the inside of the concrete anchor block (4), a pressure gauge (6) is fixedly connected to the inside of the water pipe (5), and a valve (7) is fixedly installed on the inside of the water pipe (5); The dredging mechanism (8) comprises a movable shell (14) movably connected to the top of the concrete anchor pier (4); the interior of the movable shell (14) is rotatably connected to a rotating shaft (15); and one end of the rotating shaft (15) located outside the movable shell (14) is fixedly connected to a rotating handle (16).

2. The gravity dam foundation drainage structure according to claim 1, characterized in that: The exterior of the rotating shaft (15) is fixedly connected to a fixed block (17), and the inner wall of the fixed block (17) is fixedly connected to a second magnet (18).

3. The gravity dam foundation drainage structure according to claim 2, characterized in that: The outer portion of the rotating shaft (15) is provided with a torsion spring (19), one end of the torsion spring (19) is fixedly connected to the inner wall of the movable housing (14), and the other end of the torsion spring (19) is fixedly connected to the outer wall of the fixed block (17).

4. The gravity dam foundation drainage structure according to claim 1, characterized in that: The interior of the water pipe (5) is fixedly connected to a fixed housing (10), the inner wall of the fixed housing (10) is fixedly connected to a return spring (11), one end of the return spring (11) away from the fixed housing (10) is fixedly connected to a rubber sleeve (12), and the inner wall of the rubber sleeve (12) is fixedly connected to a first magnet (13).

5. The gravity dam foundation drainage structure according to claim 1, characterized in that: The adjustment mechanism (9) includes a threaded rod (21) fixedly connected to the top of the corridor bottom plate (1); the outside of the movable housing (14) is fixedly connected to a connecting plate (22), and the connecting plate (22) is sleeved on the outside of the threaded rod (21).

6. The gravity dam foundation drainage structure according to claim 5, characterized in that: Limiting blocks (23) are respectively threadedly connected to the outside of the threaded rod (21) and located on the upper and lower sides of the connecting plate (22); a fixing rod (20) is fixedly connected to the top of the concrete anchor pier (4); and the movable shell (14) is slidably connected to the outside of the fixing rod (20).

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