Concrete dam capable of achieving dam heel self-repairing

Abstract

The invention provides a concrete dam capable of achieving dam heel self-repairing, the concrete dam comprises a dam body, a detection piece and a self-repairing microcapsule, a self-repairing reinforcing area is formed at the dam heel of the dam body, and the self-repairing reinforcing area is provided with a self-repairing concrete main body; the detection piece is arranged in the self-repairing concrete main body so as to be suitable for detecting the cracking condition of the self-repairing concrete main body; the self-repairing microcapsule is arranged in the self-repairing concrete main body and is suitable for releasing a repairing agent when the self-repairing concrete main body cracks; the repairing agent is suitable for reacting with water, and the reaction product is suitable for filling cracks. According to the method, self-repairing of dam body cracking can be achieved, the integrity of the dam body is restored, the anti-seismic safety performance of the dam body is guaranteed, and the stability and reliability of the dam are improved; and meanwhile, the manual maintenance cost and time are reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake resistance of water conservancy projects, and in particular to a concrete dam capable of realizing self-repair of the dam heel. Background Art

[0002] Under earthquakes, the heel area of ​​a concrete dam is prone to stress concentration due to repeated alternating tensile and compressive loads. When the peak dynamic tensile stress exceeds the concrete's ultimate tensile strength, initial cracks develop along the dam foundation interface. These cracks then expand as the seismic waves continue to act, causing persistent damage to the dam's structural integrity, affecting its proper functioning and endangering downstream safety. Furthermore, the heel area's prolonged underwater presence creates a complex inspection environment and makes maintenance difficult, presenting significant challenges for post-earthquake inspections of this area. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention aims to provide a concrete dam capable of self-repairing the dam heel, aiming to solve the problem that the concrete dam heel is easily damaged and difficult to repair.

[0004] The present invention proposes a concrete dam capable of achieving self-repair of the dam heel. The concrete dam includes a dam body, a detection piece and self-repairing microcapsules. A self-repairing reinforcement area is formed at the dam heel of the dam body, and the self-repairing reinforcement area is provided with a self-repairing concrete body; the detection piece is arranged in the self-repairing concrete body to be suitable for detecting cracking of the self-repairing concrete body; the self-repairing microcapsules are arranged in the self-repairing concrete body and are suitable for releasing a repair agent when cracks appear in the self-repairing concrete body; the repair agent is suitable for reacting with water, and the reaction product is suitable for filling the cracks.

[0005] The concrete dam capable of self-repairing the dam heel according to the present invention is reinforced at the dam heel with a self-repairing concrete body. The self-repairing concrete body is embedded with microcapsules containing a repair agent, which can automatically rupture and release the repair agent after an earthquake to fill the cracks, thereby achieving self-repair of the cracks in the self-repairing concrete body, restoring the integrity of the dam body, ensuring the seismic safety performance of the dam body, reducing earthquake damage to the dam body, improving the stability and reliability of the dam, and further improving the operational safety of water conservancy project facilities; at the same time, it reduces the difficulty, cost and time of manual maintenance and improves the efficiency of maintenance.

[0006] According to some embodiments of the present invention, the self-repairing concrete body is made by pouring concrete, and the detection element and the self-repairing microcapsules are embedded in the self-repairing concrete body during pouring.

[0007] According to some embodiments of the present invention, the self-healing microcapsule comprises a water-soluble capsule wall, wherein a repairing agent is stored in the water-soluble capsule wall; the water-soluble capsule wall is adapted to disintegrate upon contact with water to release the repairing agent.

[0008] According to some embodiments of the present invention, the self-repairing microcapsules are structured in a plurality, and the plurality of self-repairing microcapsules are dispersed in the self-repairing concrete body; the dispersion density of the self-repairing microcapsules is ρ, and satisfies 400 / m 3 ≤ρ≤600 pieces / m 3 .

[0009] According to some embodiments of the present invention, the detection member includes a sensor adapted to generate an electrical signal when in contact with water.

[0010] According to some embodiments of the present invention, the sensor is configured in plurality, and the plurality of sensors are dispersed in the self-repairing concrete body.

[0011] According to some embodiments of the present invention, a plurality of sensors are arranged in a three-dimensional array within the self-repairing concrete body, and the distance between each sensor and adjacent sensors is d, and satisfies 40 cm ≤ d ≤ 60 cm.

[0012] According to some embodiments of the present invention, the height of the self-repair reinforcement zone is 1 / 10 of the height of the dam body; the extension depth of the self-repair reinforcement zone along the water flow direction is 1 / 5 of the width of the dam body foundation surface.

[0013] According to some embodiments of the present invention, the concrete dam further includes a control system, which is disposed outside the dam body. The control system is adapted to obtain detection results of the detection components and determine the cracking and repair conditions of the self-repairing concrete body based on the detection results.

[0014] According to some embodiments of the present invention, the concrete dam further comprises a transmission line passing through the dam body, one end of the transmission line being connected to the detection element and the other end being connected to the control system so as to be suitable for transmitting the detection signal.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0017] Figure 1 is a schematic structural diagram of a concrete dam according to some embodiments of the present invention;

[0018] Figure 2 is a structural cross-sectional view of a concrete dam according to some embodiments of the present invention;

[0019] Figure 3 is a structural cross-sectional view of a self-repairing reinforcement zone according to some embodiments of the present invention.

[0020] Reference numerals:

[0021] Dam body 1; self-repairing concrete body 11; sensor 12; self-repairing microcapsule 13; transmission line 14; dam heel 15; dam body 16. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] Reference below Figure 1-Figure 3 A concrete dam capable of self-repairing the dam heel according to an embodiment of the present invention is described.

[0024] The present invention proposes a concrete dam capable of achieving self-repair of the dam heel. The concrete dam includes a dam body 1, a detection piece and self-repairing microcapsules 13. A self-repairing reinforcement area is formed at the dam heel 15 of the dam body 1, and the self-repairing reinforcement area is provided with a self-repairing concrete body 11; the detection piece is arranged in the self-repairing concrete body 11 to be suitable for detecting cracking of the self-repairing concrete body 11; the self-repairing microcapsules 13 are arranged in the self-repairing concrete body 11 and are suitable for releasing a repair agent when cracks appear in the self-repairing concrete body 11; the repair agent is suitable for reacting with water, and the reaction product is suitable for filling the cracks.

[0025] According to the concrete dam capable of self-repairing at the dam heel of the present invention, when subjected to earthquakes, the self-repairing concrete body 11 located at the dam heel 15 is subjected to cyclical tensile and compressive alternating loads, making it prone to cracking. When cracks form and pass through the self-repairing reinforcement area at the dam heel 15, the self-repairing concrete body 11 ruptures, exposing the self-repairing microcapsules 13 and the detection element embedded therein. The detection element can detect the cracking, and the detection results can be used to analyze the cracking status of the concrete dam. At the same time, because the dam heel 15 is in an underwater environment for a long time, water will seep into the resulting cracks. After the repair agent in the self-repairing microcapsules 13 is released, it reacts with water to form a solid body with a dense crystal structure, which fills the cracks through the volume expansion effect. The solid body can form a chemical bond with the self-repairing concrete body 11, fixing them together as a whole, realizing the self-repair function of the damaged structure, effectively restoring the structural strength of the dam body 1 and enhancing its seismic resistance and stability.

[0026] According to the concrete dam capable of self-repairing the dam heel of the present invention, a self-repairing concrete body 11 is used for reinforcement at the dam heel 15. The self-repairing concrete body 11 is embedded with microcapsules 13 containing a repair agent, which can automatically rupture and release the repair agent after an earthquake to fill the cracks, thereby achieving self-repair of the self-repairing concrete body 11, restoring the integrity of the dam body 1, ensuring the seismic safety performance of the dam body 1, reducing damage to the dam body 1 caused by earthquakes, improving the reliability of the dam, and further improving the operational safety of water conservancy project facilities; at the same time, it reduces the difficulty, cost and time of manual maintenance and improves the efficiency of maintenance.

[0027] In some embodiments, the dam body 1 includes a self-repairing reinforcement zone and a dam body 16, with the self-repairing concrete body 11 and the dam body 16 fixedly connected as a whole. Specifically, during the dam body casting process, the self-repairing concrete body 11 and the dam body 16 can be directly consolidated into one, resulting in a complete and integrated dam structure. Furthermore, the self-repairing concrete body 11 can improve the overall seismic performance of the dam body by self-healing cracks.

[0028] According to some embodiments of the present invention, the self-repairing concrete body 11 is formed by pouring concrete, and the detection member and the self-repairing microcapsules 13 are embedded in the self-repairing concrete body 11 during the pouring process. In this embodiment, the detection member and the self-repairing microcapsules 13 are embedded in the self-repairing concrete body 11 during the pouring process of the self-repairing concrete body 11, which can simplify the construction operation, enhance the installation stability of the detection member and the self-repairing microcapsules 13, and improve the structural strength of the self-repairing concrete body 11.

[0029] According to some embodiments of the present invention, the self-healing microcapsules 13 include a water-soluble wall containing a repair agent; the wall is adapted to disintegrate upon contact with water, releasing the repair agent. In this embodiment, the self-healing microcapsules 13, by virtue of their water-soluble walls, automatically disintegrate upon contact with water after water infiltrates the cracks, releasing the repair agent. This embodiment ensures the self-healing microcapsules 13 are sensitive to cracks, accurately identifying them through water seepage and rapidly disintegrating, restoring the integrity of the dam body 1 in a short period of time with high repair efficiency, and is unaffected by earthquake intensity.

[0030] According to some embodiments of the present invention, the self-repairing microcapsules 13 are structured in a plurality, and the plurality of self-repairing microcapsules 13 are dispersed in the self-repairing concrete body 11; the dispersion density of the self-repairing microcapsules 13 is ρ, and satisfies 400 / m 3 ≤ρ≤600 pieces / m 3 .like Figure 3As shown, in this embodiment, by providing a plurality of self-repairing microcapsules 13 and arranging them at a high density in the self-repairing concrete body 11, blind spots for repair can be avoided, and cracks at different positions and directions inside the self-repairing concrete body 11 can be effectively responded to and repaired; and a large number of self-repairing microcapsules 13 can increase the reserves of the repair agent in the self-repairing concrete body 11, ensuring an adequate supply of the repair agent, being able to adapt to different degrees of damage and cracking, providing more repair opportunities, and improving the safety performance and risk response capabilities of the dam body 1.

[0031] According to some embodiments of the present invention, the detection member includes a sensor 12, which is suitable for generating an electrical signal when in contact with water. In this embodiment, the detection member indirectly obtains the cracking condition of the self-repairing concrete body 11 by detecting whether it is in contact with water through the sensor 12. Specifically, when the self-repairing concrete body 11 cracks, water seeps into the resulting cracks, and the sensor 12 generates an electrical signal when it encounters water. When the electrical signal appears, it indicates that a crack has appeared at the location where the sensor 12 is set. Based on the penetration of water and the detection and identification of water, the sensor 12 of this embodiment can accurately detect cracks, is not affected by the intensity of the earthquake, and has high sensitivity.

[0032] Furthermore, after the self-repairing microcapsules 13 release the repair agent, it reacts with water to fill the crack. The water in the crack is consumed in the reaction, and the reaction products fill the crack, blocking further water infiltration. This prevents the sensor 12 from contacting water and stops generating electrical signals. When the electrical signal from the sensor 12 disappears, it indicates that the crack has been repaired. Based on this, technicians can intuitively and quickly determine the appearance and disappearance of cracks by analyzing the presence or absence of electrical signals, and evaluate the effectiveness of crack repair.

[0033] According to some embodiments of the present invention, multiple sensors 12 are configured and dispersed throughout the self-repairing concrete body 11. In this embodiment, by providing multiple sensors 12 and arranging them at a high density within the self-repairing concrete body 11, detection blind spots can be avoided, allowing detection of cracks at different locations and directions within the self-repairing concrete body 11. Furthermore, based on the number of sensors 12 generating signals and the corresponding position of each sensor 12, technicians can determine the specific location and depth of cracks by combining and analyzing the multiple detection signals.

[0034] According to some embodiments of the present invention, a plurality of sensors 12 are arranged in a three-dimensional array within the self-repairing concrete body 11, and the distance between each sensor 12 and the adjacent sensor 12 is d, and satisfies 40cm≤d≤60cm. Figure 3As shown, in this embodiment, multiple sensors 12 are arranged in a three-dimensional array. This regular arrangement facilitates the positioning of each sensor 12, thereby facilitating the determination of the crack's location and depth based on the presence or absence of a detection signal. Specifically, the multiple sensors 12 are spaced apart along the three coordinate axes. Along each coordinate axis, the spacing between two adjacent sensors 12 is 40 cm to 60 cm. This results in a relatively uniform distribution of sensors 12 and a high density, improving detection accuracy and obtaining more accurate information on the crack's location and depth.

[0035] In combination with the above embodiments, the present invention can locate the specific position and depth of cracks by analyzing the signals output by the detection component after cracks occur in the heel 15 of the concrete dam, and analyze and evaluate the repair effect after the self-repair process is completed, thereby ensuring the quality of crack repair and reducing the workload and difficulty of maintenance work.

[0036] According to some embodiments of the present invention, the height of the self-repair reinforcement zone is 1 / 10 of the height of the dam body 1; the extension depth of the self-repair reinforcement zone along the water flow direction is 1 / 5 of the width of the foundation surface of the dam body 1. In this embodiment, the height and extension depth of the self-repair reinforcement zone are determined based on the height and width of the dam body 1. This size range can cover areas of the dam body 1 that are prone to cracking. By limiting the scope of the self-repair reinforcement zone, construction costs can be controlled while improving the seismic resistance and stability of the dam body 1.

[0037] According to some embodiments of the present invention, the concrete dam further includes a control system, which is disposed outside the dam body 1. The control system is adapted to obtain the test results of the detection components and, based on the test results, determine the cracking and repair status of the self-repairing concrete body 11. In this embodiment, the control system can obtain the test results of the detection components, thereby determining the cracking and repair status of the self-repairing concrete body 11. Based on the test results, subsequent maintenance or inspection operations can be conveniently determined, thereby improving inspection efficiency in an intelligent manner and ensuring the structural stability of the dam body 1.

[0038] According to some embodiments of the present invention, the concrete dam further comprises a transmission line 14, which is provided through the dam body 1, with one end of the transmission line 14 connected to the detection element and the other end connected to the control system, so as to be suitable for transmitting the detection signal. In this embodiment, the detection signal of the detection element is transmitted through the transmission line 14, which can ensure stable signal transmission. Furthermore, the transmission line 14 can also transmit power to the detection element, solving the problem of power supply of the detection element in the self-repairing concrete body 11. In some embodiments, the transmission line 14 can be preset inside the dam body 1 during the pouring construction of the dam body 1 to avoid problems such as subsequent drilling and installation, simplify the operation, and avoid damaging the structural strength of the dam body 1.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0040] In the description of the present invention, "first feature" and "second feature" may include one or more of the features.

[0041] In the description of the present invention, "plurality" means two or more.

[0042] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0043] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0044] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A concrete dam capable of self-repairing the dam heel, characterized in that: include: A dam body, wherein a self-repairing reinforcement area is formed at the heel of the dam body, and the self-repairing reinforcement area is provided with a self-repairing concrete body; A detection member, the detection member is arranged in the self-repairing concrete body and is suitable for detecting cracking conditions of the self-repairing concrete body; The self-repairing microcapsules are arranged in the self-repairing concrete body and are suitable for releasing a repair agent when cracks appear in the self-repairing concrete body; the repair agent is suitable for reacting with water, and the reaction product is suitable for filling the cracks.

2. The concrete dam capable of self-repairing the dam heel according to claim 1, characterized in that: The self-repairing concrete body is made by pouring concrete, and the detection element and the self-repairing microcapsules are embedded in the self-repairing concrete body during pouring.

3. The concrete dam capable of self-repairing the dam heel according to claim 1, characterized in that: The self-repairing microcapsule comprises a water-soluble capsule wall, wherein the repairing agent is stored in the water-soluble capsule wall; the water-soluble capsule wall is suitable for disintegrating when contacting water to release the repairing agent.

4. The concrete dam capable of self-repairing the dam heel according to claim 1, characterized in that: The self-repairing microcapsules are structured in multiples, and the multiple self-repairing microcapsules are dispersed in the self-repairing concrete body; the dispersion density of the self-repairing microcapsules is ρ, and meets 400 / m 3 ≤ρ≤600 pieces / m 3 .

5. The concrete dam capable of achieving dam heel self-repair according to claim 1, characterized in that: The detection member includes a sensor adapted to generate an electrical signal when in contact with water.

6. The concrete dam capable of self-repairing the dam heel according to claim 5, characterized in that: The sensor is configured in plurality, and the plurality of sensors are dispersed in the self-repairing concrete body.

7. The concrete dam capable of self-repairing the dam heel according to claim 6, characterized in that: The plurality of sensors are arranged in a three-dimensional array in the self-repairing concrete body, and the distance between each sensor and the adjacent sensor is d, and satisfies 40cm≤d≤60cm.

8. The concrete dam capable of self-repairing the dam heel according to claim 1, characterized in that: The height of the self-repair reinforcement zone is 1 / 10 of the height of the dam body; the extension depth of the self-repair reinforcement zone along the water flow direction is 1 / 5 of the width of the dam body foundation surface.

9. The concrete dam capable of achieving dam heel self-repair according to claim 1, characterized in that: Also includes: A control system is provided outside the dam body, and is suitable for obtaining the detection results of the detection member and determining the cracking condition and repair condition of the self-repairing concrete body according to the detection results.

10. The concrete dam capable of achieving dam heel self-repair according to claim 9, characterized in that: Also includes: A transmission line is provided through the dam body, one end of the transmission line is connected to the detection component, and the other end is connected to the control system, so as to be suitable for transmitting the detection signal.

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