Imaging method and device for foundation pit jetting reinforcement based on carbon powder enhanced 3D printed conductive material
Through carbon fine powder enhanced three-dimensional printing conductive materials and resistivity imaging technology, the problem of real-time monitoring and evaluation during foundation pit reinforcement is solved, and the precise control and efficient monitoring of the reinforcement process is achieved, ensuring project quality and safety.
Patent Information
- Application Number
- CN202411370435.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-29
AI Technical Summary
The prior art lacks real-time monitoring and evaluation methods during foundation pit reinforcement, and the reinforcement effect is difficult to ensure, and traditional conductive components are difficult to accurately control shape and size, which affects the uniformity of the reinforcement and the monitoring effect of resistivity imaging technology.
Carbon fine powder is used to enhance three-dimensional printing of conductive materials, and the shape and size of conductive elements are accurately controlled through three-dimensional printing technology, and the reinforcement process is monitored in real time with resistivity imaging technology to generate a three-dimensional imaging map of the reinforced body.
Real-time monitoring and evaluation of the reinforcement process is realized, the quality and safety of the project are ensured, the efficiency and effect of reinforcement are improved, and the construction costs are reduced.
Smart Images
Figure CN118895792B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of geological engineering technology, and in particular to a foundation pit rotary jetting reinforcement imaging method and device based on carbon powder enhanced three-dimensional printed conductive material. Background Art
[0002] In geological engineering, foundation pit reinforcement is mainly used to improve the stability and bearing capacity of the foundation pit and prevent collapse and settlement. The stability of the foundation pit directly affects the safety of the foundation and superstructure. Especially in construction and infrastructure projects, foundation pit reinforcement is particularly important. At present, the foundation pit reinforcement technologies mainly include rotary jet grouting, anchor reinforcement, soil nail wall reinforcement, etc. Among them, the rotary jet grouting method is widely used in foundation reinforcement projects due to its wide range of applications, fast construction speed, and good reinforcement effect. The rotary jet grouting method is a technology that injects grouting materials (such as cement slurry, chemical slurry, etc.) into foundation cracks, cavities or weak layers through high pressure. Through high-pressure spraying and rotation, the grouting material can be fully mixed and consolidated with the foundation soil to form a reinforcement body, thereby improving the bearing capacity and stability of the foundation. However, in the existing technology, the formation and distribution of the reinforcement body are difficult to monitor and evaluate in real time during the rotary jet grouting process. Once cracks, cavities or other defects appear inside the reinforcement body, it is difficult to detect and repair them in time, resulting in poor reinforcement effect and even safety hazards. Traditional methods mainly rely on later quality inspections, such as sampling inspections and field tests, but these methods are usually lagging and cannot fully reflect the internal quality of the reinforcement. Due to the inability to monitor the reinforcement process in real time, the uniformity and integrity of the reinforcement are difficult to ensure. There are quality differences inside the reinforcement, resulting in uneven reinforcement effects, affecting the overall stability of the foundation pit. Existing construction processes and technical means are difficult to fully control and optimize the reinforcement process, so that some potential problems are not discovered until after the construction is completed, increasing the difficulty and cost of repair and maintenance. Existing reinforcement technology mainly relies on construction experience and on-site inspections, and it is difficult to comprehensively evaluate the internal quality of the reinforcement. Once the reinforcement effect is not ideal, re-reinforcement may be required, increasing construction costs and time. In addition, due to the lack of scientific evaluation standards and methods, it is difficult to objectively compare and evaluate the reinforcement effects of different construction processes and materials, thus affecting the improvement and optimization of the technology. In the traditional rotary jet grouting method, the conductive elements used are often difficult to accurately control their shape and size, resulting in uneven resistivity distribution during the reinforcement process, affecting the monitoring effect of resistivity imaging technology. In addition, conductive elements manufactured by traditional methods may have manufacturing defects, such as holes and cracks, which will further affect the quality of the reinforcement material and the reinforcement effect.
[0003] Based on this, the present invention proposes a foundation pit rotary jet grouting reinforcement imaging method based on carbon powder enhanced 3D printed conductive material. The shape, size and distribution of the carbon powder enhanced conductive material can be accurately controlled through 3D printing technology, improving the uniformity of the reinforcement process and the accuracy of monitoring. At the same time, combined with resistivity imaging technology, real-time monitoring and evaluation of the reinforcement process can be achieved, ensuring the quality and safety of the project, and greatly improving the efficiency and effect of construction. In the future, with the continuous development of materials science, 3D printing technology and geological engineering technology, this method is expected to be promoted and applied in more fields. Summary of the invention
[0004] In view of the above technical problems, the present disclosure provides a foundation pit rotary jet grouting reinforcement imaging method and device based on carbon powder enhanced three-dimensional printed conductive material, which solves the technical problems in the prior art of lack of real-time monitoring and evaluation means during foundation pit reinforcement, difficulty in ensuring reinforcement effect and inability to evaluate reinforcement quality.
[0005] According to one aspect of the present disclosure, a method for foundation pit rotary jetting and injection reinforcement imaging based on carbon powder enhanced three-dimensional printed conductive materials is provided, comprising the following steps:
[0006] (1) Material preparation: mixing carbon powder with a polymer matrix material to prepare a carbon powder-reinforced three-dimensional conductive material;
[0007] (2) 3D printing conductive elements: The mixed carbon powder reinforced 3D conductive material is printed into conductive elements by a 3D printer;
[0008] (3) Rotary jet grouting: During the foundation pit reinforcement process, the conductive elements are embedded in the grouting material through the rotary jet grouting equipment and sprayed into the cracks, voids or weak layers of the foundation. The grouting material is mixed and consolidated with the foundation soil to form a reinforced body with conductive and real-time monitoring properties.
[0009] (4) Capturing resistivity data: As the reinforcement is gradually formed, the resistivity changes inside the reinforcement are monitored in real time through resistivity imaging, thereby evaluating the formation and distribution of the reinforcement;
[0010] (5) Three-dimensional imaging: Analyze the collected resistivity imaging data to generate a three-dimensional image of the reinforced body.
[0011] In some embodiments of the present disclosure, the particle size of the carbon powder in step (1) is less than 50 microns.
[0012] In some embodiments of the present disclosure, the polymer matrix material is epoxy resin or polyethylene.
[0013] In some embodiments of the present disclosure, the mixing ratio of the carbon powder to the polymer matrix material is 15%:85%.
[0014] In some embodiments of the present disclosure, the conductive element in step (2) is a mesh or grid structure to form a uniform resistivity distribution in the reinforced body; the size of the conductive element is set to 30 mm in length, 15 mm in width, and 5 mm in height to meet the injection requirements and avoid clogging; the printing parameters of the conductive element are set to a layer thickness of 0.1 mm, a printing speed of 50 mm / s, and a printing temperature of 200°C to ensure the size and mechanical properties of the printed conductive element.
[0015] In some embodiments of the present disclosure, after the conductive element is printed in step (2), a post-processing step for the conductive element is further included before step (3), and the post-processing step includes cleaning and curing.
[0016] A foundation pit rotary jet injection reinforcement imaging device based on carbon powder enhanced three-dimensional printed conductive material is suitable for the above-mentioned foundation pit rotary jet injection reinforcement imaging method based on carbon powder enhanced three-dimensional printed conductive material, comprising a mixer, a carbon powder inlet and a polymer matrix material inlet are arranged above the mixer, the material outlet of the mixer is connected to the material inlet of the three-dimensional printer, the conductive element outlet of the three-dimensional printer is connected to a cleaning and curing device, the outlet end of the cleaning and curing device is connected to the inlet end of the rotary jet injection equipment, the rotary jet injection equipment contains grouting material inside to embed the conductive element into the grouting material and spray it into the foundation to form a reinforced body with conductive and real-time monitoring performance; the reinforced body is connected to a resistivity imager.
[0017] In some embodiments of the present disclosure, the mixer is a V-shaped mixer, which includes a V-shaped mixing bin, a carbon powder inlet and a polymer matrix material inlet are respectively arranged at two ends of the top of the V-shaped mixing bin, and a mixing outlet is arranged at the bottom of the V-shaped mixing bin. A stirring component is arranged through the V-shaped mixing bin, and the stirring component includes a rotating motor, a power output shaft of the rotating motor is connected to a rotating shaft, and the rotating shaft passes through the V-shaped mixing bin, and a plurality of stirring paddles are arranged in the middle of the rotating shaft in the V-shaped stirring bin.
[0018] In some embodiments of the present disclosure, the end of the rotating shaft is disposed on the support frame via a rotating bearing.
[0019] In some embodiments of the present disclosure, the cleaning and solidification device includes an ultrasonic cleaner, which includes a shell, a cleaning tank for accommodating cleaning liquid is arranged in the shell, a transducer is installed between the shell and the cleaning tank, and the transducer includes a plurality of ultrasonic vibrators to convert the sound energy of a power ultrasonic frequency source into mechanical vibrations, and radiate ultrasonic waves to the cleaning liquid in the cleaning tank through the wall of the cleaning tank, and a mesh basket for accommodating the components to be cleaned is arranged in the cleaning tank.
[0020] In some embodiments of the present disclosure, the net basket is connected to a lifting assembly, which includes a bracket installed at the bottom of the net basket, the bracket is provided with a fastener that can snap the net basket together, the bracket is connected to one side of a lifting rod, and a roller is installed on the other side of the lifting rod, and a slide rail is provided on the side wall of the cleaning tank to cooperate with the movement of the roller.
[0021] In some embodiments of the present disclosure, a hydraulic cylinder is installed on the top of the lifting rod via a connecting plate.
[0022] In some embodiments of the present disclosure, a cover plate is provided on the top of the lifting rod to cover the top of the cleaning tank during cleaning.
[0023] In some embodiments of the present disclosure, a heating device is also provided on the inner wall of the cleaning tank.
[0024] The beneficial effects of the present invention are:
[0025] The present invention significantly improves the conductivity of the reinforced body by introducing carbon powder to enhance the three-dimensional printed conductive material, thereby realizing real-time monitoring and evaluation of the reinforcement process. The application of resistivity imaging technology enables engineers to understand the reinforcement effect in a timely manner during the construction process to ensure the quality and safety of the project. In addition, this method improves the reinforcement efficiency, reduces the construction cost, and has broad application prospects.
[0026] Carbon powder is mixed with 3D printing materials in a certain proportion to prepare 3D printing materials that have both structural strength and good conductive properties.
[0027] The carbon powder-reinforced conductive material is printed into conductive elements of specific shapes and sizes using 3D printing technology. This is beneficial for embedding and distribution of conductive elements in the foundation pit reinforcement process, achieving real-time monitoring. Conductive elements with mesh or grid structures facilitate the formation of a uniform resistivity distribution within the reinforcement body. The size of the conductive elements is designed and the printing parameters are optimized to ensure that the printed elements meet the injection requirements without causing hole blockage.
[0028] The rotary jet grouting ensures the full mixing and consolidation of the conductive elements and the grouting material to form a reinforced body with conductive properties; the high pressure and high speed of the rotary jet grouting enable the material to penetrate deep into tiny cracks and voids, providing a comprehensive reinforcement effect.
[0029] Through resistivity imaging, the resistivity distribution inside the reinforcement body can be captured in real time, thereby evaluating the formation and distribution of the reinforcement body; changes in resistivity data can reflect the solidification process of the reinforcement material, the uniformity of the reinforcement body, and potential voids or weaknesses; by analyzing these data, possible problems can be discovered and dealt with in a timely manner to ensure the reliability of the reinforcement effect.
[0030] The collected resistivity imaging data is analyzed in detail to generate a three-dimensional image of the reinforced body; the three-dimensional image can intuitively display the structure, uniformity and integrity of the reinforced body; based on these analysis results, the construction process and parameters can be optimized and adjusted to improve the reinforcement effect.
[0031] The V-shaped mixer ensures that the carbon powder is fully mixed with the polymer matrix material, thereby ensuring that the final printed conductive element has good conductivity and mechanical properties. The conductive element is manufactured through 3D printing technology, and its geometry and size can be precisely controlled, which helps to improve the overall performance of the reinforcement. The ultrasonic cleaner can effectively remove the residue on the surface of the conductive element, while the heating device helps to quickly solidify and ensure the cleanliness and stability of the conductive element. The reinforcement is connected to the resistivity imager, which can monitor the changes in the conductive properties of the reinforcement in real time, provide timely feedback to the engineering personnel, and facilitate the adjustment of construction parameters. The reinforcement formed by embedding the conductive element in the grouting material and spraying it into the foundation not only enhances the physical and mechanical properties of the foundation, but also can be used as part of the sensor network to monitor the foundation status due to its conductivity. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 A flowchart of the imaging method for foundation pit rotary jetting reinforcement based on carbon powder enhanced 3D printed conductive materials;
[0033] Figure 2 is a schematic diagram of the mixer structure;
[0034] Figure 3 This is a schematic diagram of the cleaning solidification device structure;
[0035] Figure 4 This is the left view of the cleaning curing unit;
[0036] Figure 5 for Figure 4 Sectional view of the middle AA plane;
[0037] Figure 6 This is a front view of the cleaning solidifier;
[0038] Figure 7 for Figure 6 Middle BB plane section view;
[0039] The names of the components in the figure are: 1. Mixer; 2. V-shaped mixing bin; 3. Carbon powder inlet; 4. Polymer matrix material inlet; 5. Rotating motor; 6. Rotating shaft; 7. Mixing outlet; 8. Rotating bearing; 9. Support frame; 10. Cleaning and curing device; 11. Housing; 12. Cleaning tank; 13. Transducer; 14. Bracket; 15. Fastener; 16. Lifting rod; 17. Roller; 18. Slide rail; 19. Hydraulic cylinder; 20. Cover plate; 21. Heating device; 22. Connecting plate. DETAILED DESCRIPTION
[0040] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example 1
[0041] This example discloses a foundation pit rotary jet injection reinforcement imaging method based on carbon powder enhanced three-dimensional printed conductive material, see Figures 1 to 7 ;
[0042] The steps include:
[0043] (1) Material preparation: Select carbon powder with high purity and uniform particle size, dry it and remove moisture and impurities. The particle size of carbon powder is controlled below 50 microns to ensure that it is evenly dispersed in the matrix material. At the same time, select polymers with high strength and good corrosion resistance, such as epoxy resin or polyethylene. According to experimental data, the optimal mixing ratio of carbon powder and polymer matrix material is 15%:85% (mass ratio) to ensure that the final material has the best conductivity and mechanical strength. In a high-speed blender, slowly add carbon powder to the polymer matrix material and stir for 30 minutes to ensure uniform mixing. Then degas in a vacuum environment to remove bubbles during the mixing process and ensure the density of the material.
[0044] (2) 3D printing of conductive elements: The structure of the conductive elements is designed using CAD software. The design takes into account the size and shape of the embedded solid body of the foundation pit. A grid or lattice structure is usually used to ensure uniform resistivity distribution. The conductive size should not be too large to avoid clogging. It can be set to 30 mm in length, 15 mm in width, and 5 mm in height. Set the printing parameters in the 3D printer, including layer thickness (0.1 mm), printing speed (50 mm / s), printing temperature (200°C), etc., to ensure that the printed conductive elements have precise dimensions and good mechanical properties. Load the mixed material into the 3D printer and print the conductive elements layer by layer according to the designed model. After printing, the conductive elements are post-processed, such as cleaning and curing, to ensure their stable performance.
[0045] (3) Rotary jet grouting: Check the status of the rotary jet grouting equipment to ensure that it can provide stable high-pressure and high-speed injection. The equipment mainly includes a high-pressure pump, a rotary nozzle, a grouting pipe, etc. The 3D printed conductive elements and the prefabricated grouting materials are loaded into two different silos of the equipment respectively. In the foundation pit reinforcement area, start the rotary jet grouting equipment, and spray the conductive elements and grouting materials into the foundation cracks, voids or weak layers at high speed through the rotary nozzle at the same time. During the construction process, the injection pressure (usually 20-30 MPa) and the injection speed (about 5 m / s) are adjusted to ensure that the materials can be fully mixed and filled into all small cracks and gaps.
[0046] (4) Capturing resistivity data: Arrange resistivity imaging equipment around the pit reinforcement area, including electrodes, data acquisition devices, and computer control systems. Adjust the electrode spacing and arrangement according to actual conditions to ensure that the entire reinforcement area is covered. Start the resistivity imaging system to monitor the resistivity changes inside the reinforcement body in real time. The acquisition frequency is set to once every 10 minutes to capture subtle changes in the reinforcement process. The collected resistivity data is transmitted to the computer, processed and analyzed by professional software, and a resistivity distribution map inside the reinforcement body is generated. According to the changes in resistivity, the formation process and uniformity of the reinforcement body are judged.
[0047] (5) 3D imaging: Integrate the resistivity imaging data with the on-site construction parameters (such as grouting volume, grouting pressure, etc.) and generate a 3D model of the reinforcement body through 3D modeling software. Generate a 3D image of the reinforcement body using high-resolution image processing software. The image should clearly show the structure, uniformity and integrity of the reinforcement body. Analyze the generated 3D image in detail to evaluate the reinforcement effect. Based on the analysis results, optimize and adjust the construction process and parameters, such as adjusting the grouting volume and injection pressure, to improve the reinforcement effect and project quality.
[0048] A foundation pit rotary jet grouting reinforcement imaging device based on carbon powder enhanced three-dimensional printed conductive material is suitable for the above-mentioned foundation pit rotary jet grouting reinforcement imaging method based on carbon powder enhanced three-dimensional printed conductive material, comprising a mixer 1, a carbon powder inlet and a polymer matrix material inlet are arranged above the mixer 1, the material outlet of the mixer is connected to the material inlet of the three-dimensional printer, the conductive element outlet of the three-dimensional printer is connected to a cleaning and curing device, the outlet end of the cleaning and curing device is connected to the inlet end of the rotary jet grouting equipment, the rotary jet grouting equipment contains grouting material inside, so as to embed the conductive element into the grouting material and spray it into the foundation to form a reinforced body with conductive and real-time monitoring performance; the reinforced body is connected to a resistivity imager.
[0049] The mixer 1 is a V-shaped mixer, which includes a V-shaped mixing bin 2. A carbon powder inlet 3 and a polymer matrix material inlet 4 are respectively arranged at the two ends of the top of the V-shaped mixing bin 2. A mixing outlet 7 is arranged at the bottom of the V-shaped mixing bin 2. A stirring component is arranged through the V-shaped mixing bin 2. The stirring component includes a rotating motor 5. The power output shaft of the rotating motor 5 is connected to a rotating shaft 6. The rotating shaft 6 runs through the V-shaped mixing bin 2. A plurality of stirring paddles are arranged in the middle of the rotating shaft 6 located in the V-shaped stirring bin 2.
[0050] The end of the rotating shaft 6 is disposed on a supporting frame 9 via a rotating bearing 8 .
[0051] The cleaning and curing device 10 includes an ultrasonic cleaner, which includes a shell 11. A cleaning tank 12 for accommodating cleaning liquid is arranged in the shell 11. A transducer 13 is installed between the shell 11 and the cleaning tank 12. The transducer includes a plurality of ultrasonic vibrators to convert the sound energy of a power ultrasonic frequency source into mechanical vibrations, and radiate ultrasonic waves to the cleaning liquid in the cleaning tank 12 through the wall of the cleaning tank 12. A mesh basket for accommodating components to be cleaned is arranged in the cleaning tank 12.
[0052] The net basket is connected to a lifting assembly, which includes a bracket 14 installed at the bottom of the net basket, a fastener 15 is provided on the bracket 14 to engage the net basket, the bracket 14 is connected to one side of a lifting rod 16, and a roller 17 is installed on the other side of the lifting rod 16. A slide rail 18 is provided on the side wall of the cleaning tank 12 to cooperate with the roller 17 to move.
[0053] A hydraulic cylinder 19 is installed on the top of the lifting rod 16 via a connecting plate 22 .
[0054] A cover plate 20 is disposed on the top of the lifting rod 16 to cover the top of the cleaning tank 12 during cleaning.
[0055] A heating device 21 is also provided on the inner wall of the cleaning tank 12 .
[0056] During the working process, the material is first prepared, and the carbon powder and the polymer matrix material are added to the V-shaped mixing bin 2 through the inlets 3 and 4 respectively. The rotating motor 5 drives the rotating shaft 6 to rotate, and the stirring paddle located in the V-shaped mixing bin 2 stirs accordingly to fully mix the carbon powder and the polymer matrix. The conductive material after being fully mixed is output from the mixing outlet 7 and enters the next step. The mixed carbon powder-enhanced three-dimensional conductive material is transported from the mixer 1 to the material inlet of the three-dimensional printer. The three-dimensional printer prints the conductive material into the required conductive element (for example, a mesh or grid structure) according to the pre-set parameters (such as layer thickness, printing speed, printing temperature, etc.). The printed conductive element is sent to the cleaning and curing device 10. In the ultrasonic cleaner, the conductive element is placed in the mesh basket, and the conductive element is cleaned by the mechanical vibration generated by the ultrasonic vibrator to remove the surface residue. After cleaning, the conductive element continues to be cured in the cleaning tank 12, and the heating device 21 can accelerate the curing process. The cleaned and cured conductive element is transmitted from the cleaning and curing device 10 to the inlet end of the rotary spraying and perfusion equipment. The rotary jet grouting equipment is filled with grouting material. When the equipment is started, the conductive element and the grouting material are sprayed into the foundation together. The conductive element combines with the grouting material to form a conductive reinforcement body, which can enhance the stability and bearing capacity of the foundation. While the reinforcement body is being formed, the resistivity change inside the reinforcement body is monitored in real time through the connected resistivity imager. The collected data is used to generate a three-dimensional image of the reinforcement body to evaluate the reinforcement effect. The entire device realizes an automated process from material mixing to reinforcement body formation and real-time monitoring, greatly improving construction efficiency and monitoring accuracy.
[0057] Although some preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.
[0058] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A foundation pit rotary jetting and perfusion reinforcement imaging method based on carbon powder enhanced three-dimensional printed conductive materials, characterized in that: The steps include: (1) Material preparation: mixing carbon powder with a polymer matrix material to prepare a carbon powder-reinforced three-dimensional conductive material; (2) 3D printing of conductive elements: The mixed carbon powder reinforced three-dimensional conductive material is printed into conductive elements by a three-dimensional printer; the conductive elements are mesh or grid structures to form a uniform resistivity distribution in the reinforced body; the conductive elements are sized to be 30 mm long, 15 mm wide, and 5 mm high to meet the injection requirements and avoid clogging; the conductive element printing parameters are set to a layer thickness of 0.1 mm, a printing speed of 50 mm / s, and a printing temperature of 200°C to ensure the size and mechanical properties of the printed conductive elements; (3) Rotary jet grouting: During the foundation pit reinforcement process, the conductive elements are embedded in the grouting material through the rotary jet grouting equipment and sprayed into the cracks, voids or weak layers of the foundation. The grouting material is mixed and consolidated with the foundation soil to form a reinforced body with conductive and real-time monitoring properties. (4) Capturing resistivity data: As the reinforcement is gradually formed, the resistivity changes inside the reinforcement are monitored in real time through resistivity imaging, thereby evaluating the formation and distribution of the reinforcement; (5) Three-dimensional imaging: Analyze the collected resistivity imaging data to generate a three-dimensional image of the reinforced body.
2. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 1, characterized in that: The particle size of the carbon powder in step (1) is less than 50 microns.
3. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 1, characterized in that: The polymer matrix material is epoxy resin or polyethylene.
4. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 1, characterized in that: The mixing ratio of the carbon powder and the polymer matrix material is 15%:85%.
5. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 1, characterized in that: After the conductive element is printed in step (2), the conductive element is post-processed before step (3), and the post-processing includes cleaning and curing.
6. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 5, characterized in that: A foundation pit rotary jet grouting reinforcement imaging device using carbon powder-enhanced three-dimensional printed conductive material comprises a mixer, a carbon powder inlet and a polymer matrix material inlet are arranged above the mixer, the material outlet of the mixer is connected to the material inlet of a three-dimensional printer, the conductive element outlet of the three-dimensional printer is connected to a cleaning and curing device, the outlet end of the cleaning and curing device is connected to the inlet end of a rotary jet grouting device, the rotary jet grouting device contains grouting material inside so as to embed the conductive element into the grouting material and spray it into the foundation to form a reinforced body with conductive and real-time monitoring performance; the reinforced body is connected to a resistivity imager.
7. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 6, characterized in that: The mixer is a V-shaped mixer, which includes a V-shaped mixing bin, wherein a carbon powder inlet and a polymer matrix material inlet are respectively arranged at two ends of the top of the V-shaped mixing bin, and a mixing outlet is arranged at the bottom of the V-shaped mixing bin. A stirring component is arranged through the V-shaped mixing bin, and the stirring component includes a rotating motor, a power output shaft of the rotating motor is connected to a rotating shaft, and the rotating shaft passes through the V-shaped mixing bin. A plurality of stirring paddles are arranged in the middle of the rotating shaft in the V-shaped stirring bin; and the end of the rotating shaft is arranged on a support frame via a rotating bearing.
8. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 6, characterized in that: The cleaning and solidifying device includes an ultrasonic cleaner, which includes a shell, a cleaning tank for containing cleaning liquid is arranged in the shell, a transducer is installed between the shell and the cleaning tank, and the transducer includes a plurality of ultrasonic vibrators to convert the sound energy of a power ultrasonic frequency source into mechanical vibration, and radiate the ultrasonic wave to the cleaning liquid in the cleaning tank through the wall of the cleaning tank, and a mesh basket for containing the components to be cleaned is arranged in the cleaning tank.
9. The method for foundation pit rotary jetting and reinforcement imaging based on carbon powder enhanced three-dimensional printing conductive material according to claim 8, characterized in that: The net basket is connected to a lifting assembly, which includes a bracket installed at the bottom of the net basket, a fastener for snapping the net basket is arranged on the bracket, the bracket is connected to one side of a lifting rod, a roller is installed on the other side of the lifting rod, and a slide rail is arranged on the side wall of the cleaning tank to cooperate with the movement of the roller; a hydraulic cylinder is installed on the top of the lifting rod via a connecting plate; a cover plate is arranged on the top of the lifting rod to cover the top of the cleaning tank during cleaning; a heating device is also arranged on the inner wall of the cleaning tank.