High-precision digital twin model construction method

Abstract

The present invention provides a high-precision digital twin model construction method, which belongs to the field of construction monitoring technology, including: constructing a model of a construction site that is proportionally restored in a host computer, determining the progress of the current construction and the changes in the shape and position of each material in real time through a monitoring system, and the monitoring system feeds back the monitored data to the host computer in real time, and the host computer updates the model. During actual construction, the monitoring system calculates the type, mixing ratio and current environmental parameters of each component, and the host computer calculates the degree of chemical reaction and the change in physical properties of the material based on the information fed back by the monitoring system, and combines finite element analysis to warn before the material is deformed and falls. The high-precision digital twin model construction method provided by the present invention can more realistically and accurately judge the state and interaction force of each material in the host computer, ensure the accuracy of model simulation, and improve the reference value of data.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction monitoring, and more specifically, to a method for constructing a high-precision digital twin model. Background Art

[0002] At present, digital twin technology is widely used in intelligent manufacturing and virtual production workshops, and is gradually developing from digitalization to intelligence and wisdom. The deep integration of unmanned mining in mines and information technologies such as machine learning has accelerated the rise and in-depth development of intelligent mining technology in mines. Digital twin technology has the characteristics of model visualization, logical controllability and data computability in virtual model construction, and is widely used in industrial intelligent manufacturing and virtual production scenarios. With the continuous promotion of the results of machine vision 3D modeling technology and visual sensor measurement technology in industrial applications, digital twin technology based on machine vision will play an important role in the application of intelligent mine 3D scene modeling, physical information technology and virtual space digital mirroring.

[0003] In the construction planning method based on digital twins, it is necessary to generate corresponding models according to the actual construction content. In order to provide certain guidance for the actual construction, it is necessary to perform corresponding calculations on the model. However, the problem is that there are differences between the model and the actual structure in terms of structure and stress, which leads to low simulation accuracy through the model and little reference value. Summary of the invention

[0004] The purpose of the present invention is to provide a high-precision digital twin model construction method, aiming to solve the problem that there are differences in structure and stress between the model and the actual structure.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a high-precision digital twin model construction method, including:

[0006] Before each material enters the site, the corresponding physical properties and chemical parameters are tested and stored in the host computer;

[0007] A model of the construction site is constructed in the host computer, and the progress of the current construction and the changes in the shape and position of each material are determined in real time through the monitoring system. The monitoring system feeds back the monitored data to the host computer in real time, and the host computer updates the model;

[0008] During actual construction, the monitoring system calculates the type of each component, the mixing ratio and the current environmental parameters. The host computer infers the degree of chemical reaction of the material and the change in physical properties based on the information fed back by the monitoring system, and combines finite element analysis to issue an early warning before the material is deformed or has the risk of falling.

[0009] In a possible implementation, the physical properties and chemical parameters of each material are tested before entering the site, and stored in the host computer, including:

[0010] Constructing geometric bodies for simulating various materials in the host computer, and adding the geometric bodies to the model;

[0011] In combination with the physical and chemical test results of each material, material properties for simulating gravity are set on the geometric body.

[0012] In a possible implementation, the testing of the corresponding physical properties and chemical parameters of each material before it enters the site includes:

[0013] Different types of materials use different testing methods;

[0014] For materials used in large quantities and in bulk, sampling and testing shall be carried out;

[0015] For single-component materials that are used in large quantities and have been processed, overall measurement is performed; for differentiated individuals, individual testing is performed;

[0016] For materials that are used in small quantities and have multiple components, the component content is measured and physical properties such as the adhesion between components are tested.

[0017] In a possible implementation, the real-time determination of the current construction progress and the changes in the shapes and positions of various materials by the monitoring system includes:

[0018] The monitoring system detects the position and shape changes of the equipment, components, materials, people and mechanical devices in the construction site in real time; and determines the environmental parameters of each location;

[0019] The host computer determines the current state of each material and the chemical reaction that has occurred based on the information fed back by the monitoring system.

[0020] In a possible implementation, the host computer calculates the degree of chemical reaction and the change of physical properties of the material based on the information fed back by the monitoring system, including:

[0021] According to the test results of each material and in combination with relevant empirical data and information fed back by the monitoring system, the host computer infers the specific situation of the chemical reaction in the material, and at the same time calculates the changes in the corresponding physical properties during the chemical reaction.

[0022] In a possible implementation, the real-time determination of the current construction progress and the changes in the shapes and positions of various materials by the monitoring system includes:

[0023] The plurality of sensors in the monitoring system are installed at a plurality of locations of the construction site;

[0024] By cooperating with a plurality of the sensors, the position and movement changes of various equipment, components, materials, people and mechanical devices are determined;

[0025] The host computer realizes automatic control through the execution devices installed on the equipment and mechanical devices.

[0026] In a possible implementation, the host computer calculates the degree of chemical reaction and the change of physical properties of the material based on the information fed back by the monitoring system, including:

[0027] By cooperating with a plurality of the sensors, the changes in volume and mass of each material are determined in real time;

[0028] When a plurality of materials are mixed, the ratio relationship between the materials is inferred by a plurality of the sensors.

[0029] In a possible implementation, the host computer calculates the degree of chemical reaction and the change of physical properties of the material based on the information fed back by the monitoring system, including:

[0030] The host computer calculates the shape of the material itself, the adhesion with other materials, and the position stability of the material itself according to the changes in the physical and chemical parameters of the material; and issues corresponding warnings before problems occur based on the calculation results.

[0031] In a possible implementation, the finite element analysis is combined to provide an early warning before the material is deformed and has a risk of falling, including:

[0032] On the basis that the multiple sensors do not detect deformation, the host computer predicts environmental parameters in the future, and infers the stability of the shape of the material itself and the stability of the relative positions between the materials based on the prediction results and combined with the changes in the current physical and chemical parameters;

[0033] When the inferred results do not meet the preset requirements, early warnings are given of possible accidents and the time when they may occur.

[0034] In a possible implementation, the testing of the corresponding physical properties and chemical parameters of each material before it enters the site includes:

[0035] The surface roughness of each material and the adhesion of impurities are determined by the monitoring system, and the results are fed back to the host computer;

[0036] Based on the data fed back by the monitoring system, the host computer infers the structural strength and impact resistance of the model; and based on the load and deformation provided by the detection system in the completed structure, the cause of the accident and the rectification plan are determined through the model;

[0037] According to the external environment of the construction site, the corrosion of the components and the corresponding treatment measures are simulated in the model.

[0038] The beneficial effect of the high-precision digital twin model construction method provided by the present invention is that compared with the prior art, the physical properties and chemical parameters of each material are first detected before entering the site and stored in the host computer in the high-precision digital twin model construction method of the present invention. The monitoring system determines the progress of the current construction and the changes in the shape and position of each material in real time, and the host computer updates the model according to the data fed back by the monitoring system. In the actual construction process, the monitoring system calculates the type, mixing ratio and current environmental parameters of each component. Under the measurement of the monitoring system, the host computer calculates the degree of chemical reaction of the material and the change in physical properties, and combines finite element analysis to issue an early warning before the material is deformed and falls.

[0039] In this application, the model can be updated according to the actual construction situation through the monitoring system and the host computer. More importantly, based on the detection of actual materials and subsequent measurements in the host computer, the degree of chemical reaction inside the material at different time points and the corresponding physical properties can be determined. The state and interaction force of each material can be judged more realistically and accurately in the host computer, thereby ensuring the accuracy of the model simulation and improving the reference value of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A flowchart of a method for constructing a high-precision digital twin model provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] See also Figure 1 Now, the high-precision digital twin model construction method provided by the present invention is described. The high-precision digital twin model construction method includes:

[0044] The corresponding physical properties and chemical parameters of each material are tested before it enters the site and stored in the host computer.

[0045] A model of the construction site is constructed in proportion in the host computer. The progress of the current construction and the changes in the shape and position of each material are determined in real time through the monitoring system. The monitoring system feeds the monitored data back to the host computer in real time, and the host computer updates the model.

[0046] During actual construction, the monitoring system calculates the type of each component, the mixing ratio and the current environmental parameters. The host computer infers the degree of chemical reaction of the material and the change in physical properties based on the information fed back by the monitoring system, and combines finite element analysis to issue an early warning before the material is deformed or has the risk of falling.

[0047] The beneficial effect of the high-precision digital twin model construction method provided by the present invention is that compared with the prior art, the physical properties and chemical parameters of each material are first detected before entering the site and stored in the host computer in the high-precision digital twin model construction method of the present invention. The monitoring system determines the progress of the current construction and the changes in the shape and position of each material in real time, and the host computer updates the model according to the data fed back by the monitoring system. In the actual construction process, the monitoring system calculates the type, mixing ratio and current environmental parameters of each component. Under the measurement of the monitoring system, the host computer calculates the degree of chemical reaction of the material and the change in physical properties, and combines finite element analysis to issue an early warning before the material is deformed and falls.

[0048] In this application, the model can be updated according to the actual construction situation through the monitoring system and the host computer. More importantly, based on the detection of actual materials and subsequent measurements in the host computer, the degree of chemical reaction inside the material at different time points and the corresponding physical properties can be determined. The state and interaction force of each material can be judged more realistically and accurately in the host computer, thereby ensuring the accuracy of the model simulation and improving the reference value of the data.

[0049] In the process of engineering operation, the coordinated deformation and interaction between rock formations and engineering structures are key issues. As a system, the visualization model of the rock formation and engineering structure can provide construction personnel with an intuitive engineering prototype, which is convenient for engineering construction. The computable model of the system can provide designers with a clear analysis object, which is convenient for parameter verification. Since the existing monitoring technology in China is difficult to achieve synchronous monitoring and reverse control between objects and computers, it can only preliminarily transmit the mechanical parameters of the object to the computer for processing, but cannot achieve reverse control of the computer over the object.

[0050] my country's mining engineering industry is still in the early stages of intelligent construction. The mining field should implement digital and intelligent construction to realize the integrated sharing of mining information and scientific decision-making. By applying digital twin technology to mining engineering and geotechnical fields, it can be widely used in intelligent monitoring and early warning of power disasters.

[0051] Existing mining application scenarios use virtual reality simulation technologies such as VR or AR. The data of the physical model and virtual simulation are not synchronized. The self-learning and self-optimization capabilities of the simulation model are weak. It lacks computability and information interaction capabilities, and cannot perform intelligent perception and health prediction of smart mining application scenarios and operating equipment. Therefore, it is necessary to explore and invent a new simulation model construction method, based on visual three-dimensional models for perception analysis, simulation, iterative optimization and decision control, and realize remote visual intelligent monitoring of smart mining scenes through virtual scene digital twin models to solve the existing technical problems.

[0052] For digital twins, the existing methods mostly carry out corresponding modeling according to the actual construction process of the project. After the modeling is completed, the stability of the model and its ability to resist external impact are inferred by finite element analysis and other methods. And the service life and safety of the model are simulated in the host computer. Although the above method has a certain reference value, it should be pointed out that there are certain differences between the model built based on digital twin technology and the actual situation. Even if the model is restored in proportion after the construction is completed, the internal steel bar arrangement and the structural strength of the steel bars and other parameters cannot be effectively simulated, which also leads to a certain deviation between the final simulation results in the host computer and the actual situation.

[0053] In some embodiments of the high-precision digital twin model construction method provided in this application, the corresponding physical properties and chemical parameters of each material are tested before entering the site, and stored in the host computer, including:

[0054] Construct the geometric bodies for each material simulation in the host computer and add them to the model.

[0055] Based on the physical and chemical test results of each material, the material properties used to simulate gravity are set on the geometry.

[0056] By using digital twin technology to build a model that matches the actual situation in the host computer, it is necessary to make real-time corrections and reconstructions to the model in the host computer according to the actual construction situation during the actual construction. The final result is to synchronize the creation process of the model in the host computer with the actual construction. More importantly, the parameters of the materials and the performance of the components detected in the host computer need to be restored in proportion in the host computer. The ultimate goal is to ensure that the model has the same shape, stress and impact resistance as the actual structure.

[0057] Because only the above design can ensure that the model in the host computer and the actual constructed structure have the same structural strength and stress state in all locations, and only the above settings can ensure that the corresponding tests on the host computer model will have certain guiding significance for reality, and only the above settings can ensure that the results obtained in the host computer will have certain guiding significance for reality.

[0058] In some embodiments of the high-precision digital twin model construction method provided in this application, the corresponding physical properties and chemical parameters detection of each material before entering the site includes:

[0059] Different types of materials use different testing methods.

[0060] For materials used in large quantities and in bulk, sampling inspection is carried out.

[0061] For single-component materials that are used in large quantities and have been processed, overall measurements are performed; and for differentiated individuals, individual tests are performed.

[0062] For materials that are used in small quantities and have multiple components, the component content is measured and physical properties such as the adhesion between components are tested.

[0063] In order to ensure that the physical performance parameters of the created model are the same as the actual ones, it is first necessary to calibrate and test the materials used in the construction. For some more important occasions, it is necessary to label and test the performance of the materials one by one, and the installation position of the model in the host computer should be the same as the fixed position during actual construction.

[0064] A specific implementation method is to first classify the materials. For some bulk materials used in large quantities, their basic parameters and performance need to be determined through sampling and testing methods. For example, for concrete, materials from the same batch and the same manufacturer are sampled and tested in the laboratory. On the basis of judging whether they meet the use requirements, various performance parameters are determined.

[0065] For materials that are used in large quantities and have been processed, it is necessary to detect and determine their appearance, shape and composition before using them, that is, to determine the composition and connection relationship between different components. For example, for tiles and aerated concrete blocks, it is necessary to measure their shape, weight, hardness, wear resistance, surface smoothness and density in batches, and calculate the individual situation by measuring the whole.

[0066] For some materials in smaller quantities, they need to be measured one by one with the help of on-site scanning equipment. The measurement range includes physical and chemical parameters such as geometry, weight, density and strength. Once the above conditions are determined, corresponding labels are required to facilitate corresponding tracking and subsequent analysis and processing.

[0067] In some embodiments of the high-precision digital twin model construction method provided in the present application, the progress of the current construction and the changes in the shape and position of each material are determined in real time by the monitoring system, including:

[0068] The monitoring system detects the position and shape changes of equipment, components, materials, people and mechanical devices in the construction site in real time; and determines the environmental parameters of each location.

[0069] The host computer determines the current state of each material and the chemical reaction that has occurred based on the information fed back by the monitoring system.

[0070] In the actual construction process, it is not just the stacking of materials, but more importantly the chemical reactions occurring within the materials. This is because the chemical reactions cannot be effectively identified and detected from the outside. This means that even if the material passes the corresponding tests on the outside, certain chemical changes are still occurring inside. The final result is that the overall physical properties of the material cannot be effectively judged.

[0071] In view of the above reasons, first of all, it is necessary to conduct corresponding tests when the materials enter the site, and at the same time, the test results need to be uploaded to the host computer. When the above situations are determined, the current construction is monitored throughout the process through the monitoring system at the construction site. The monitoring scope includes not only the location of equipment, components, materials, people and mechanical devices, but also the movement changes of the above objects. More importantly, it is necessary to determine the current environmental parameters in real time to determine the basic situation of the current chemical reaction. At the same time, with the help of the monitoring system, the chemical reaction corresponding to the current construction method can be inferred. Through the above changes, the chemical changes in the material can finally be inferred.

[0072] In some embodiments of the high-precision digital twin model construction method provided in the present application, the host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including:

[0073] Based on the test results of each material, combined with relevant empirical data and information fed back by the monitoring system, the host computer infers the specific circumstances of the chemical reaction in the material, and calculates the changes in the corresponding physical properties during the chemical reaction.

[0074] At present, there are relatively few types of materials used on construction sites, usually including: concrete, steel bars, insulation boards, thermal insulation boards, waterproof materials, decorative boards and adhesives, etc., among which concrete is the most important and relatively largest material in the entire construction process. More importantly, there are many studies on concrete at present, and there are a lot of reference data on physical parameters such as hardness of different types of concrete after mixing with different components under different environmental conditions. It is for the above reasons that after the corresponding test of the material, the corresponding empirical data can be retrieved according to the test results, and the empirical data can be stored in the host computer as a reference for the chemical reaction of the material.

[0075] To explain in more detail, first after the material is tested, the properties and content of the material are measured accordingly. After the measurement is completed, by searching and consulting relevant information, the chemical changes of the material under different parameters can be obtained. When the above-mentioned prepared information is determined, the monitoring system can identify the chemical reactions that can be produced by the current operating method and environmental parameters, and finally make a corresponding judgment on the situation after the material reaction is complete through calculation in the upper computer.

[0076] In some embodiments of the high-precision digital twin model construction method provided in the present application, the progress of the current construction and the changes in the shape and position of each material are determined in real time by the monitoring system, including:

[0077] Multiple sensors in the monitoring system are installed at various locations on the construction site.

[0078] Through the coordination of multiple sensors, the position and movement changes of various equipment, components, materials, people and mechanical devices can be determined.

[0079] The host computer realizes automatic control through the actuators installed on the equipment and mechanical devices.

[0080] In order to monitor the entire construction process, multiple sensors are installed in the construction site. The number of sensors is multiple, and multiple sensors are installed in different positions. Multiple sensors are used to determine environmental parameters such as temperature, humidity and wind speed in the current construction environment. Some sensors can determine the location and movement of the currently running equipment, and can determine the location and movement of each construction worker in real time.

[0081] In order to explain in more detail, first of all, the type of equipment and the corresponding size need to be constructed in the host computer. After the above equipment model and material model are constructed, they are added to the host computer, that is, the required materials, components, equipment, people and mechanical devices need to be constructed in equal proportions in the host computer. When the model is added, according to the operation mode of each device, the approximate route and operation method are planned in the host computer, that is, a preliminary action simulation is performed in the host computer. Only through the above settings can the problems that may occur in the whole process be effectively judged, and it can be closer to the real situation.

[0082] The above settings are not only a simulation of the construction, but also a route planning for the entire construction in advance, thereby guiding the actual construction to a certain extent and providing certain data support to ensure the progress of the construction.

[0083] In some embodiments of the high-precision digital twin model construction method provided in the present application, the host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including:

[0084] Through the coordination of multiple sensors, the changes in volume and mass of each material can be determined in real time.

[0085] When multiple materials are mixed, multiple sensors are used to infer the ratio between the materials.

[0086] In this application, not only does it require real-time display of each device in the host computer, but during the actual construction process, the host computer can also infer the chemical reaction inside the material based on the current operating method, and more importantly, it needs to infer the subsequent changes in physical properties.

[0087] In order to achieve the above-mentioned technical effects, some sensors can calculate the amount of water according to the size and flow rate of the water flow, and can determine the amount of water mixed with the concrete. Some sensors can calculate the total volume and weight of the sand, so the weight and volume of the sand can be determined each time it is transported.

[0088] Through the above settings, when the host computer detects that a corresponding chemical change is needed, multiple sensors can be used to determine the amount of each component and the corresponding proportion, and the current environmental state can also be determined. Based on the above reasons, the host computer can make corresponding inferences about the chemical reaction situation and subsequent changes in physical properties.

[0089] In some embodiments of the high-precision digital twin model construction method provided in the present application, the host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including:

[0090] The upper computer calculates the material's own shape, adhesion to other materials, and the material's own position stability based on changes in the material's physical and chemical parameters; based on the calculation results, it issues corresponding warnings before problems occur.

[0091] Before the actual operation, the host computer has stored various test reports of different materials, and through the cooperation of multiple sensors, it can determine the chemical changes of materials and the subsequent changes in physical parameters. However, the above situation still cannot fully monitor the ongoing construction, and more importantly, it cannot provide corresponding early warning for the current construction.

[0092] It is for the above reasons that the position and shape of each material in the host computer can be monitored in real time through the cooperation of multiple sensors, that is, the shape and state of the material in the host computer are synchronized with reality. The embodiment is the shape of concrete during the mixing process. When the above situation is determined, the changes of each material in the host computer are also actual changes. At the same time, unlike the actual construction, the host computer can make corresponding inferences on the current state of each material. Through the above settings, in the subsequent construction process, the bonding force between different materials and the stability of the position can be calculated accordingly in the host computer.

[0093] During the actual construction process, the host computer performs real-time finite element analysis on unsolidified materials, that is, it makes certain inferences on the possible flow state and physical properties of the materials. When a failure is likely to occur, the host computer issues an early warning through the corresponding early warning device.

[0094] In some embodiments of the high-precision digital twin model construction method provided in the present application, the finite element analysis is combined to provide an early warning before the material is deformed and falls, including:

[0095] On the basis that multiple sensors did not detect deformation, the host computer predicted the environmental parameters for a period of time in the future. Based on the predicted results and combined with the changes in current physical and chemical parameters, the stability of the material's own shape and the stability of the relative positions between materials were inferred.

[0096] When the inferred results do not meet the preset requirements, early warnings are given of possible accidents and the time when they may occur.

[0097] The early warning host computer in this application includes two aspects. One aspect is to determine the position and status of each material through real-time detection of multiple sensors. When the change in the position of certain materials exceeds the preset requirements, a corresponding early warning is issued. The above-mentioned early warning method makes up for the problem that personnel cannot monitor in real time and has a certain early warning effect.

[0098] Another early warning method is that before the material is completely solidified or even if the material has been solidified, the performance of the material itself or between different materials may change due to the measurement of the host computer and the influence of the surrounding environment. The final result is deformation and falling off of the material.

[0099] In response to the above situation, finite element analysis is performed in real time on different materials and on materials being solidified in the host computer. At this time, ordinary position and displacement sensors cannot detect changes in the position and shape of the materials, but through finite element measurement in the host computer, it is possible to infer whether the adhesion of the material surface, the stability of the overall shape and the bonding force of different materials meet the requirements. If the requirements are not met, an early warning will be issued through the host computer.

[0100] In some embodiments of the high-precision digital twin model construction method provided in this application, the corresponding physical properties and chemical parameters detection of each material before entering the site includes:

[0101] The monitoring system determines the surface roughness of each material and the adhesion of impurities, and feeds them back to the host computer.

[0102] Based on the data fed back by the monitoring system, the host computer infers the structural strength of the model and its ability to resist impact; and based on the load and deformation provided by the internal detection system of the completed structure, the model is used to determine the cause of the accident and the rectification plan.

[0103] According to the external environment of the construction site, the corrosion of the components and the corresponding treatment measures are simulated in the model.

[0104] Since the physical and chemical properties of the final model are the same as those of the actual structure, based on the above reasons, when the structure undergoes load changes or even deformation, the cause of the accident and the rectification plan can be determined through simulation and calculation in the model. Not only that, this application simulates the impact of chemical reactions on the structure, so by simulating the corresponding environment on the outside of the model, the corrosion of the surrounding environment on the structure can be determined, and the treatment measures can also be determined.

[0105] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision digital twin model construction method, characterized in that: include: Before each material enters the site, the corresponding physical properties and chemical parameters are tested and stored in the host computer; A model of the construction site is constructed in the host computer, and the progress of the current construction and the changes in the shape and position of each material are determined in real time through the monitoring system. The monitoring system feeds back the monitored data to the host computer in real time, and the host computer updates the model; During actual construction, the monitoring system calculates the type, mixing ratio and current environmental parameters of each component. The host computer calculates the degree of chemical reaction and changes in physical properties of the material based on the information fed back by the monitoring system, and uses finite element analysis to issue an early warning before the material is deformed or falls. The physical properties and chemical parameters of each material are tested before entering the site and stored in the host computer, including: Constructing geometric bodies for simulating various materials in the host computer, and adding the geometric bodies to the model; In combination with the physical and chemical test results of each material, material properties for simulating gravity are set on the geometric body; The real-time determination of the current construction progress and the changes in the shapes and positions of various materials by the monitoring system includes: The monitoring system detects the position and shape changes of the equipment, components, materials, people and mechanical devices in the construction site in real time; and determines the environmental parameters of each location; The host computer determines the current state of each material and the chemical reaction that has occurred based on the information fed back by the monitoring system; The host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including: According to the test results of each material and in combination with relevant empirical data and information fed back by the monitoring system, the host computer infers the specific situation of the chemical reaction in the material, and at the same time calculates the changes in the corresponding physical properties during the chemical reaction.

2. The high-precision digital twin model construction method according to claim 1, characterized in that: The physical properties and chemical parameters tests of the materials before they are brought into the site include: Different types of materials use different testing methods; For materials used in large quantities and in bulk, sampling and testing shall be carried out; For single-component materials that are used in large quantities and have been processed, overall measurement is performed; for differentiated individuals, individual testing is performed; For materials that are used in small quantities and have multiple components, the component content is measured and physical properties such as the adhesion between components are tested.

3. The high-precision digital twin model construction method according to claim 1, characterized in that: The real-time determination of the current construction progress and the changes in the shapes and positions of various materials by the monitoring system includes: The plurality of sensors in the monitoring system are installed at a plurality of locations of the construction site; By cooperating with a plurality of the sensors, the position and movement changes of various equipment, components, materials, people and mechanical devices are determined; The host computer realizes automatic control through the execution devices installed on the equipment and mechanical devices.

4. The high-precision digital twin model construction method according to claim 3, characterized in that: The host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including: By cooperating with a plurality of the sensors, the changes in volume and mass of each material are determined in real time; When a plurality of materials are mixed, the ratio relationship between the materials is inferred by a plurality of the sensors.

5. The high-precision digital twin model construction method according to claim 3, characterized in that: The host computer calculates the degree of chemical reaction of the material and the change of physical properties based on the information fed back by the monitoring system, including: The host computer calculates the shape of the material itself, the adhesion with other materials, and the position stability of the material itself according to the changes in the physical and chemical parameters of the material; and issues corresponding warnings before problems occur based on the calculation results.

6. The high-precision digital twin model construction method according to claim 5, characterized in that: The aforementioned early warning in combination with finite element analysis before the material deformation and falling risk occurs includes: On the basis that the multiple sensors do not detect deformation, the host computer predicts environmental parameters in the future, and infers the stability of the shape of the material itself and the stability of the relative positions between the materials based on the prediction results and combined with the changes in the current physical and chemical parameters; When the inferred results do not meet the preset requirements, early warnings are given of possible accidents and the time when they may occur.

7. The high-precision digital twin model construction method according to claim 1, characterized in that: The physical properties and chemical parameters tests of the materials before they are brought into the site include: The surface roughness of each material and the adhesion of impurities are determined by the monitoring system, and the results are fed back to the host computer; Based on the data fed back by the monitoring system, the host computer infers the structural strength and impact resistance of the model; and based on the load and deformation provided by the detection system in the completed structure, the cause of the accident and the rectification plan are determined through the model; According to the external environment of the construction site, the corrosion of the components and the corresponding treatment measures are simulated in the model.

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