CN112730742B - Visualization device for researching crack plugging of underwater structure and using method - Google Patents
Visualization device for researching crack plugging of underwater structure and using method Download PDFInfo
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Abstract
The invention discloses a visualization device for researching crack plugging of an underwater structure and a using method thereof, and the visualization device for researching crack plugging of the underwater structure comprises a water environment simulation device for simulating a water environment; the underwater rubbing device is used for acquiring cracks of underwater structures; a slip casting shutoff test device for slip casting shutoff. The experimental device realizes visualization of the underwater grouting process, and the method can simulate the grouting process of the fracture in various environments, so that a proper grouting method and material are found, an optimal pumping point is determined, the actual construction is more convenient, the fracture plugging effect is better, and the manpower and material costs are reduced.
Description
Technical Field
The invention designs a visualization device for researching underwater structure crack plugging and a using method thereof, in particular to a visualization method and a visualization device for researching underwater structure crack plugging, which are used for modeling cracks and carrying out tests on simulation actual conditions of a water tank.
Background
With the rapid development of national economic construction in China, underwater projects such as cross-sea bridges, underwater tunnels and the like are more and more constructed, and the problem of repairing cracks of the underwater structures is always solved urgently by the projects. Compared with the common construction, the underwater grouting has higher difficulty in plugging cracks, and the water pressure, the selection of grouting materials and the pumping and grouting method have great influence on the underwater grouting.
Disclosure of Invention
The invention aims to provide a visualization device for researching fracture plugging of an underwater structure and a using method thereof.
In order to achieve the technical features, the invention is realized as follows: a visual device for researching crack plugging of an underwater structure comprises a water environment simulation device for simulating a water environment; the underwater rubbing device is used for acquiring cracks of underwater structures; a slip casting shutoff test device for slip casting shutoff.
The water environment simulation device comprises a transparent glass water tank for containing water, wherein a plurality of high-definition cameras in different positions are arranged on the inner side wall of the transparent glass water tank, a space arbitrary angle base is installed in the middle of the inside of the transparent glass water tank, and the top of the space arbitrary angle base is used for placing a crack entity transparent model.
The transparent glass water tank adopts a pressurizable water tank.
The fracture solid transparent model is a fracture solid model which is made by printing through a 3D printer and taking transparent resin as a material; the model is separated into two halves and can be separated, the filler can be taken out separately, an optical fiber pressure sensor and an optical fiber displacement sensor are arranged on the side wall to measure pressure, a grouting pipe and an exhaust/water pipe of the grouting plugging test device are inserted into a self-selected pumping and injecting site and are communicated with a grouting machine and a water pump, and an original stress clamp is used for simulating the pressure from the structure.
The original stress fixture is used for simulating other pressures except water pressure under real conditions.
The underwater rubbing device main body is hemispherical and is formed by connecting two layers of different materials, and a hole is formed in a top hard layer and extends into the exhaust pipe for exhausting and draining; an elastic deformation layer made of a material with large elasticity and deformability is connected to the lower side wall of the top hard layer to prepare a hemispherical shell with a certain thickness, and the inner part of the hemispherical shell is hollow; and (3) presetting a powerful sucker at the bottom of the elastic deformation layer, then winding the whole device by using a waterproof adhesive tape, and finally coating waterproof paint to prevent water leakage.
The grouting plugging test device comprises a grouting pipe, an exhaust/water pipe, a grouting machine, a water pump, a magnetic inducer, a magnetic guide type self-convergence grouting material and an accelerator; after the magnetic inducer magnetic guiding type self-gathering grouting material is added into slurry, distance change, pipe injection influence range and water segregation influence under different magnetic mixture conditions can be observed, and whether the device is completely closed or not and the condition of stopping observation can be observed.
A use method of a visualization device for researching underwater structure crack plugging comprises the following steps:
for shallow structures in water:
step1: during the ebb tide or dry period, firstly, cleaning the attachments on the cracks by ultrasonic vibration, and adding a release agent into the cracks by using a silica gel rubbing to find a crack model prototype;
step2: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step3: adding an optical fiber pressure sensor on the side wall of the fracture solid transparent model, and detecting the pressure;
step4: adjusting the angle of the base at any angle in space to make the simulation closer to reality, and placing the fracture entity transparent model on the base at any angle in space after adjustment;
step5: clamping the model by using an original stress clamp, and simulating other pressures except water pressure;
step6: placing the arranged base with any angle in space and the crack solid transparent model into a transparent glass water tank, and selectively adding fresh water or seawater into the transparent glass water tank to simulate a real water environment;
step7: placing an exhaust/water pipe and a grouting pipe into corresponding suction points of a fracture solid transparent model, drilling holes and burying nozzles, selectively adding grout, adding a water-resisting agent into the grout to prevent water segregation and increase cohesion, adding an accelerating agent to quickly solidify the grout, and observing and recording the grouting gap filling process;
step8: adding strong magnetism into the slurry, attracting, increasing the coverage, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under the condition of different magnetic compounds, and observing the influence of pipe injection;
step9: separating the experimental fracture entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: scanning by SEM, resiliometer and CT value, and visually analyzing the bonding degree and the tightness; and (3) measuring the strength and the compactness, continuously improving grouting parameters, and selecting a slurry material with proper conditions, a pumping mode and high efficiency as a gap filling scheme.
For structures deeper in the water:
step1: for the cracks at deeper water areas, covering the target cracks with an underwater rubbing device, and tightly adsorbing the surface of the structure by a strong sucking disc;
step2: performing debridement treatment on the surface of the crack by ultrasonic vibration;
step3: starting the exhaust pipe of the underwater rubbing device to work, exhausting and draining the covered crack space to form a vacuum condition, and rubbing;
step4: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step5: adding an optical fiber pressure sensor on the side wall of the fracture solid transparent model to detect pressure;
step6: adjusting the angle of the base at any angle in space to make the simulation closer to reality, and placing the fracture entity transparent model on the base at any angle in space after adjustment;
step7: adding an original pressure clamp to the fracture solid transparent model to simulate other pressures except water pressure;
step8: placing the arranged base with any angle in space and the crack solid transparent model into a transparent glass water tank, and selectively adding fresh water or seawater into the transparent glass water tank to simulate a real water environment;
step9: placing an exhaust pipe, a drain pipe and a grouting pipe into corresponding suction points of a fracture entity transparent model, drilling holes and burying mouths, selectively adding grout, adding a water-resisting agent into the grout to prevent water from being separated, increasing cohesion, adding an accelerating agent to quickly solidify the grout, and observing and recording a grouting gap filling process;
step10: adding strong magnetism into the slurry, attracting, saving cost, increasing coverage, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under different magnetic compounds, and observing the influence of pipe injection;
step11: separating the experimental fracture entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: scanning by SEM, resiliometer and CT value, and visually analyzing the bonding degree and the tightness; measuring strength and compactness; therefore, grouting parameters are continuously improved, and a slurry material with proper conditions, a pumping injection mode and high efficiency is selected as a gap filling scheme.
The invention has the following beneficial effects:
1. according to the invention, a model prototype is found by adding a release agent into the crack by adopting the rubbing/silica gel, and the three-dimensional model which is printed and established by using transparent resin as a material after three-dimensional scanning can perfectly reduce the shape and size of the crack.
2. The underwater rubbing device is wound with the waterproof adhesive tape and coated with the waterproof paint, and can work in deeper water to find a model prototype.
3. The strong suction disc of the underwater rubbing device can firmly fix the device on a target crack and is not separated or seeped due to the influence of external factors such as water pressure and the like.
4. The elastic deformation layer of the underwater rubbing device can adapt to the surfaces of various uneven structures within a certain elastic limit, and is more attached to the surface where the crack is located, so that water seepage is prevented.
5. The underwater rubbing device is provided with the exhaust pipe, and the underwater rubbing device exhausts and drains water after covering the surface where the crack is located, so that underwater mold taking is smoother.
6. The model of the invention can be used for the second time, and is convenient for quantitatively analyzing the influence of various parameters.
7. The model of the invention is a two-half separable structure, the filler can be taken out separately, the solid can be seen quantitatively, and the side wall can be added with optical fiber for measuring pressure.
8. The water environment simulation device can better simulate the environment in which the crack is positioned.
9. The original pressure fixture of the present invention can simulate other pressures besides water pressure.
10. The pressurizable water tank can simulate different water pressures and can simulate different water environments such as fresh water/seawater and the like for experiments.
11. The base with any spatial angle can restore the angle of the crack in the building, is close to reality, and reduces errors.
12. In the pumping and injecting process, after the magnetic guide type self-gathering grouting material of the magnetic inducer is added with slurry, the covering surface can be increased by strong magnetic attraction, the cost is saved, the distance change, the pipe injection influence range and the water segregation influence under different magnetic mixture conditions are observed, and whether the grouting material is completely closed or not and the condition of stopping observation can be observed. Can select the pumping material and viscosity
13. In the pumping and injecting process, the water-resisting agent is added into the slurry to increase the cohesion and prevent water segregation from influencing the gap filling process.
14. The invention adds the accelerating agent into the slurry in the pumping and injecting process, accelerates the solidification process and reduces the time cost.
15. The camera realizes the visualization of the whole grouting and solidification process, the visualization process can improve the arrangement of suction point positions and the suction sequence, the grouting pressure can be adjusted, the filling rate, the mortar diffusion range, the grouting stopping condition and the like under different parameters can be conveniently observed and recorded, an effective pumping point and a pumping mode are found, and the grouting parameters are improved.
16. According to the invention, a sample is taken out, and the CT value of the SEM scanning resiliometer is detected in three steps, so that the degree of adhesion and the degree of tightness can be visually analyzed. And testing the strength and compactness. And the proper slurry materials and additives can be conveniently selected.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a block diagram of a fissured solid transparent model of the invention.
Fig. 3 is a structure diagram of the base of the invention at any angle in space.
Fig. 4 is a structural view of an underwater rubbing apparatus of the present invention.
In the figure: the device comprises a transparent glass water tank 1, a high-definition camera 2, an optical fiber pressure sensor 3, an optical fiber displacement sensor 4, a spatial arbitrary angle base 5, a grouting pipe 6, an exhaust/water pipe 7, an exhaust pipe 8, an elastic deformation layer 9 and a powerful suction cup 10.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-4, a visualization device for researching crack plugging of an underwater structure comprises a water environment simulation device for simulating a water environment; the underwater rubbing device is used for acquiring cracks of underwater structures; a slip casting shutoff test device for slip casting shutoff. Through adopting above-mentioned device, its mainly be to the fissured repair of underwater structures like the crack of bridge etc, can obtain the crack model of the deeper in waters through adopting foretell rubbing device under water, the device is hemispherical bilayer structure, the bottom is powerful suction cup, make the device firmly cover the crack under water, for the structure surface that adapts to all kinds of unevennesses, this device one deck is the elastic deformation layer, make the device structure surface of laminating more, the device is general still twined waterproof adhesive tape and scribbles the waterproof paint, influence rubbing reproduction in case of leaking, and have the blast pipe exhaust drainage and build vacuum environment and carry out rubbing reproduction. Aiming at the shallow cracks of the water area, rubbing copy can be directly carried out in the ebb period or the dry period. In order to obtain a solid transparent model of the crack, transparent resin which is a high-transparency material is selected, the transparent crack solid model is printed by using a 3D printing technology, meanwhile, in order to facilitate parameter comparison and quantitative detection in an experiment, the solid model is designed into a two-half separable structure, and an optical fiber pressure sensor and an optical fiber displacement sensor are additionally arranged on the side wall of the solid model to measure pressure. In order to better reduce the real situation of the crack, the water environment simulation device main body designed by the device is composed of a transparent pressurizable water tank and a spatial arbitrary angle base, the angle of the crack under the actual environment can be simulated by adjusting the spatial arbitrary angle base, and in addition, the water pressure in the water tank and the fresh water/seawater environment can be selected to be closer to the actual environment.
The invention simulates the grouting experiment to continuously change the suction point, the suction sequence, the grouting speed, the pressure, the parameters of the grouting material and the like, realizes the visualization of the whole grouting process through the high-definition camera which is arranged in all directions, and can visually observe the filling rate, the diffusion range and the like. SEM scanning is carried out to analyze the degree of adhesion and the degree of tightness. And the strength was measured with a resiliometer. The compactness was measured by CT scan. Through comparison, a proper pumping and injecting mode and slurry parameters are found and applied to actual underwater grouting crack plugging. The device has the advantages of simple structure, low cost and simple and convenient operation, can realize visual simulation of the whole process of grouting and plugging of the underwater crack, finds a proper plugging scheme, can reduce unnecessary waste of manpower and material resources, and has important engineering practice significance and application prospect in the field of gap filling of underwater structures.
Further, the water environment simulation device comprises a transparent glass water tank 1 used for containing water, a plurality of high-definition cameras 2 in different positions are arranged on the inner side wall of the transparent glass water tank 1, a space arbitrary angle base 5 is installed in the middle of the inside of the transparent glass water tank 1, and the top of the space arbitrary angle base 5 is used for placing a crack entity transparent model. The high-definition camera 2 can realize visual multi-angle monitoring and recording of the whole grouting process, and is helpful for observing the filling rate, the diffusion range, the grouting stopping condition, the solidification process and the like. Thereby selecting a suitable pumping mode.
Further, the transparent glass water tank 1 adopts a pressurizable water tank. Fresh water or seawater and other additives can be added optionally, the purpose is to simulate the water pressure and water quality environment under the real condition, and the process of the transparent water tank can be visible. The optical fiber pressure sensor and the optical fiber displacement sensor are arranged on the inner wall of the fracture model in advance, and the purpose of the method is to detect pressure and conveniently select proper and efficient grouting pressure.
Further, the fracture solid transparent model is a fracture solid model which is made by printing through a 3D printer and taking transparent resin as a material; the model is separated into two halves and can be separated, the filler can be taken out separately, an optical fiber pressure sensor 3 and an optical fiber displacement sensor 4 are arranged on the side wall to measure pressure, a grouting pipe 6 and an exhaust/water pipe 7 of a grouting plugging test device are inserted into a selected pumping and injecting site to be communicated with a grouting machine and a water pump, and an original stress clamp is used for simulating the pressure from the structure. The three-dimensional model that 3D printer used can utilize many times, environmental protection.
Further, the original stress clamp is used for simulating other pressures except water pressure under real conditions. Such as the pressure of the structure itself.
Furthermore, the main body of the underwater rubbing device is hemispherical and is formed by connecting two layers of different materials, and a hole is formed in a hard layer at the top and extends into the exhaust pipe 8 for exhausting and draining; an elastic deformation layer 9 made of a material with large elasticity and deformability is connected to the lower side wall of the top hard layer to prepare a hemispherical shell with a certain thickness, and the inner part of the hemispherical shell is hollow; the bottom of the elastic deformation layer 9 is preset with a strong suction cup 10, the device is integrally wound by a waterproof adhesive tape, and finally waterproof paint is coated to prevent water leakage. The elastic deformation layer 9 can adapt to different conditions of the surface of a structure and is stably attached. The air exhaust pipe 8 can exhaust water and air to create a vacuum environment. The strong suction disc 10 can firmly fix the device on a target crack, and the whole underwater rubbing process is stably carried out.
Further, the grouting plugging test device comprises a grouting pipe 6, an exhaust/water pipe 7, a grouting machine, a water pump, a magnetic inducer, a magnetic guiding type self-gathering grouting material and an accelerator; after the magnetic inducer magnetic guiding type self-gathering grouting material is added into slurry, distance change, pipe injection influence range and water segregation influence under different magnetic mixture conditions can be observed, and whether complete sealing and observation stopping conditions are observed.
Example 2:
a use method of a visualization device for researching fracture plugging of an underwater structure comprises the following steps:
for shallow structures in water:
step1: during the ebb tide or dry period, firstly, cleaning the attachments on the cracks by ultrasonic vibration, and adding a release agent into the cracks by using a silica gel rubbing to find a crack model prototype;
step2: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step3: adding an optical fiber pressure sensor 3 on the side wall of the transparent model of the fractured entity, and detecting the pressure;
step4: adjusting the angle of the base 5 at any angle in space to make the simulation closer to reality, and placing the fracture solid transparent model on the base 5 at any angle in space after adjustment;
step5: clamping the model by using an original stress clamp, and simulating other pressures except water pressure;
step6: placing the arranged base 5 at any angle of the space and the crack solid transparent model into a transparent glass water tank 1, and selectively adding fresh water or seawater into the transparent glass water tank 1 to simulate a real water environment;
step7: placing an exhaust/water pipe 7 and a grouting pipe 6 into corresponding suction points of a fracture solid transparent model, drilling holes and burying nozzles, selectively adding grout, adding a water-resisting agent into the grout to prevent water segregation and increase cohesion, adding an accelerating agent to quickly solidify the grout, and observing and recording the grouting gap filling process;
step8: adding strong magnetism into the slurry, attracting, increasing the coverage, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under the condition of different magnetic compounds, and observing the influence of pipe injection;
step9: separating the experimental crack entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: SEM scanning, a resiliometer and CT values, and visually analyzing the bonding degree and the tightness; and (3) measuring the strength and the compactness, continuously improving grouting parameters, and selecting a proper condition, a pumping and injecting mode and an efficient slurry material as a gap filling scheme.
Example 3:
for structures deeper in the water:
step1: for the cracks at deeper water areas, covering the target cracks with an underwater rubbing device, and tightly adsorbing the surface of the structure by a strong sucking disc;
step2: performing debridement treatment on the surface of the crack by ultrasonic vibration;
step3: starting the exhaust pipe of the underwater rubbing device to work, exhausting and draining the covered crack space to form a vacuum condition, and rubbing;
step4: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step5: adding an optical fiber pressure sensor on the side wall of the fracture solid transparent model to detect pressure;
step6: adjusting the angle of the base 5 at any angle in space to make the simulation closer to reality, and placing the fracture solid transparent model on the base 5 at any angle in space after adjustment;
step7: adding an original pressure clamp to the fracture solid transparent model to simulate other pressures except water pressure;
step8: placing the arranged base 5 at any angle of the space and the crack solid transparent model into a transparent glass water tank 1, and selectively adding fresh water or seawater into the transparent glass water tank 1 to simulate a real water environment;
step9: placing an exhaust pipe, a drain pipe and a grouting pipe into corresponding suction points of a fracture entity transparent model, drilling holes and burying mouths, selectively adding grout, adding a water-resisting agent into the grout to prevent water from being separated, increasing cohesion, adding an accelerating agent to quickly solidify the grout, and observing and recording a grouting gap filling process;
step10: adding strong magnetism into the slurry, attracting, saving cost, increasing coverage, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under different magnetic compounds, and observing the influence of pipe injection;
step11: separating the experimental fracture entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: scanning by SEM, resiliometer and CT value, and visually analyzing the bonding degree and the tightness; measuring strength and compactness; therefore, grouting parameters are continuously improved, and a slurry material with proper conditions, a pumping injection mode and high efficiency is selected as a gap filling scheme.
Claims (6)
1. The utility model provides a visual device of research underwater structure crack shutoff which characterized in that: the device comprises a water environment simulation device for simulating a water environment; the underwater rubbing device is used for acquiring cracks of underwater structures; a grouting plugging test device for grouting plugging;
the water environment simulation device comprises a transparent glass water tank (1) for containing water, wherein a plurality of high-definition cameras (2) at different positions are arranged on the inner side wall of the transparent glass water tank (1), a spatial arbitrary angle base (5) is arranged in the middle of the interior of the transparent glass water tank (1), and the top of the spatial arbitrary angle base (5) is used for placing a crack entity transparent model;
the fracture solid transparent model is a fracture solid model which is made by printing through a 3D printer and taking transparent resin as a material; the model is divided into two halves and can be separated, the filler can be taken out separately, an optical fiber pressure sensor (3) and an optical fiber displacement sensor (4) are arranged on the side wall to measure the pressure, a grouting pipe (6) and an exhaust/water pipe (7) of a grouting plugging test device are inserted into a self-selected pumping and injecting site to be communicated with a grouting machine and a water pump, and an original stress clamp is used for simulating the pressure from the structure;
the underwater rubbing device main body is hemispherical and is formed by connecting two layers of different materials, and a hole is formed in a top hard layer and extends into the exhaust pipe (8) for exhausting and draining; an elastic deformation layer (9) made of a material with large elasticity and deformability is connected to the lower side wall of the top hard layer to prepare a hemispherical shell with a certain thickness, and the inner part of the hemispherical shell is hollow; the bottom of the elastic deformation layer (9) is preset with a strong suction disc (10), the device is integrally wound by a waterproof adhesive tape, and waterproof paint is coated to prevent water leakage.
2. The visualization device for researching plugging of the underwater structure crack as claimed in claim 1, wherein: the transparent glass water tank (1) adopts a pressurizable water tank.
3. The visualization device for researching crack plugging of the underwater structure according to claim 1, wherein: the original stress fixture is used for simulating other pressures except water pressure under real conditions.
4. The visualization device for researching crack plugging of the underwater structure according to claim 1, wherein: the grouting plugging test device comprises a grouting pipe (6), an exhaust/water pipe (7), a grouting machine, a water pump, a magnetic inducer, a magnetic guiding type self-gathering grouting material and an accelerating agent; after the magnetic inducer magnetic guiding type self-gathering grouting material is added into slurry, distance change, pipe injection influence range and water segregation influence under different magnetic mixture conditions can be observed, and whether complete sealing and observation stopping conditions are observed.
5. The use method of the visualization device for researching fracture plugging of the underwater structure, which is disclosed by any one of claims 1 to 4, is characterized by comprising the following steps:
for shallow structures in water:
step1: during the ebb tide or dry period, firstly, cleaning the attachments on the cracks by ultrasonic vibration, and adding a release agent into the cracks by using a silica gel rubbing to find a crack model prototype;
step2: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step3: adding an optical fiber pressure sensor (3) on the side wall of the transparent model of the fractured entity, and detecting the pressure;
step4: adjusting the angle of the base (5) at any angle in space to make the simulation closer to reality, and placing the fracture entity transparent model on the base (5) at any angle in space after adjustment;
step5: clamping the model by using an original stress clamp, and simulating other pressures except water pressure;
step6: placing the arranged base (5) at any angle of the space and the crack solid transparent model into a transparent glass water tank (1), and selectively adding fresh water or seawater into the transparent glass water tank (1) to simulate a real water environment;
step7: placing an exhaust/water pipe (7) and a grouting pipe (6) into corresponding suction points of a fracture solid transparent model, drilling holes and burying mouths, selectively adding slurry, adding a water-resisting agent into the slurry to prevent water from being separated, increasing cohesion, adding an accelerating agent to quickly solidify the slurry, and observing and recording a grouting gap filling process;
step8: adding strong magnetism into the slurry, attracting, increasing the coverage area, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under the condition of different magnetic compounds, and observing the influence of pipe injection;
step9: separating the experimental fracture entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: SEM scanning, a resiliometer and CT values, and visually analyzing the bonding degree and the tightness; and (3) measuring the strength and the compactness, continuously improving grouting parameters, and selecting a slurry material with proper conditions, a pumping mode and high efficiency as a gap filling scheme.
6. The use method of the visualization device for researching crack plugging of the underwater structure is characterized by comprising the following steps of:
for structures deeper in the water:
step1: for the cracks at deeper water areas, covering the target cracks with an underwater rubbing device, and tightly adsorbing the surface of the structure by a strong sucking disc;
step2: performing ultrasonic vibration to debride the surface of the crack;
step3: starting the exhaust pipe of the underwater rubbing device to work, exhausting and draining the covered crack space to form a vacuum condition, and rubbing;
step4: three-dimensionally scanning the model, and manufacturing a fracture solid transparent model by using transparent resin as a material by using a 3D printing technology, wherein the fracture solid transparent model is of a two-half separable structure, so that the supplement can be taken out for quantitative analysis;
step5: adding an optical fiber pressure sensor on the side wall of the fracture solid transparent model to detect pressure;
step6: adjusting the angle of the base (5) at any angle in space to make the simulation closer to reality, and placing the fracture entity transparent model on the base (5) at any angle in space after adjustment;
step7: adding an original pressure clamp to the fracture solid transparent model to simulate other pressures except water pressure;
step8: placing the installed base (5) at any angle of the space and the crack solid transparent model into a transparent glass water tank (1), and selectively adding fresh water or seawater into the transparent glass water tank (1) to simulate a real water environment;
step9: placing an exhaust pipe, a drain pipe and a grouting pipe into corresponding suction points of a fracture entity transparent model, drilling holes and burying mouths, selectively adding grout, adding a water-resisting agent into the grout to prevent water from being separated, increasing cohesion, adding an accelerating agent to quickly solidify the grout, and observing and recording a grouting gap filling process;
step10: adding strong magnetism into the slurry, attracting, saving cost, increasing coverage, selecting different magnetic compounds, observing and recording the grouting gap filling process, analyzing the change of the convergence force under different magnetic compounds, and observing the influence of pipe injection;
step11: separating the experimental fracture entity transparent model, taking out the filler, quantitatively observing the entity, and carrying out three-step detection on the sample: SEM scanning, a resiliometer and CT values, and visually analyzing the bonding degree and the tightness; measuring strength and compactness; therefore, grouting parameters are continuously improved, and a slurry material with proper conditions, a pumping injection mode and high efficiency is selected as a gap filling scheme.
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| CN114460281B (en) * | 2022-01-09 | 2023-09-29 | 温州市文景市政园林有限公司 | Experimental device and method for repairing concrete cracks of membrane bags by adopting vacuum grouting |
| CN114414438B (en) * | 2022-01-24 | 2024-01-26 | 中国矿业大学 | Identification method for detecting grouting diffusion range based on proton magnetometer |
| CN114593660B (en) * | 2022-03-09 | 2023-05-02 | 中铁第六勘察设计院集团有限公司 | Subway tunnel crack measuring device based on rubbing principle |
| CN114755397B (en) * | 2022-04-06 | 2023-09-05 | 苏州科技大学 | Simulation test device based on full-angle grouting and application method |
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| CN108169457A (en) * | 2017-12-26 | 2018-06-15 | 山东大学 | A kind of visualization becomes aperture crack grouting rig for model test and application method |
| CN108279113A (en) * | 2018-02-05 | 2018-07-13 | 路军富 | A kind of multi-functional grouting test model equipment of three-dimensional visualization |
| CN110196213A (en) * | 2019-05-15 | 2019-09-03 | 三峡大学 | A kind of visualized experiment device and method for study of rocks crack induction type grouting parameter |
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Application publication date: 20210430 Assignee: Hubei Hongzhuo Architectural Design Co.,Ltd. Assignor: CHINA THREE GORGES University Contract record no.: X2023980043461 Denomination of invention: A Visualization Device and Usage Method for Studying Crack Sealing of Underwater Structures Granted publication date: 20230310 License type: Exclusive License Record date: 20231019 |
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