Passive rift valley simulation experiment method and device and experiment device manufacturing method

Abstract

The invention discloses a passive rift valley simulation experiment method and device and an experiment device manufacturing method. The device comprises a substrate and at least one layer of brittle material laid on the substrate, the substrate comprises a hard plate and an elastic material which are bonded alternately, and after the substrate is bonded, the substrate is compressed by a set compression distance in the direction perpendicular to the bonding surfaces of the hard plate and the elastic material; the brittle material is laid above the base top face perpendicular to the pasting face. During an experiment, the experiment device is stretched by a preset tension distance; in the stretching process, CT scanning is conducted on the passive rift valley simulation device, fracture characteristic data of the fragile material are analyzed based on CT scanning images at different moments, and geological characteristic parameters in the passive rift valley structure evolution process are obtained through analysis according to the fracture characteristic data. The experimental device can truly reproduce the tectonic deformation evolution process of the passive rift valley, and provides data support for analyzing the formation evolution process of the passive rift valley.

Description

Technical Field

[0001] The invention relates to the technical field of physical simulation of structural deformation in earth science and petroleum industry, and in particular to a passive rift simulation experimental method and device and a method for manufacturing the experimental device. Background Art

[0002] The tectonic model of passive rift is a passive rift basin formed by the weakening of the lithosphere caused by tensile stress in the continental lithosphere. Its development sequence is rift activity first, followed by volcanic activity, and reservoir deposition is a dual-mode multi-cycle. Restoring the development and evolution process of underground passive rifts can improve the understanding of the relationship between passive rift expansion and oil and gas, and provide data support for oil and gas development. However, the development process of passive rifts is relatively complex, and it is difficult to analyze its entire evolution process by observing and analyzing its existing structural patterns. At present, there is no relevant technology for the development and evolution process of underground passive rifts. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a passive rift simulation experimental method and device and an experimental device manufacturing method that overcomes the above problems or at least partially solves the above problems.

[0004] An embodiment of the present invention provides a passive rift simulation experimental device, comprising: a substrate and at least one layer of brittle material laid on the substrate;

[0005] The substrate comprises a hard plate and an elastic material pasted alternately, and after the substrate is pasted, it is compressed by a set compression distance in a direction perpendicular to the pasting surface of the hard plate and the elastic material; the compression distance is greater than or equal to the tension distance preset in the passive rift simulation experiment;

[0006] The brittle material is laid on the top surface of the base perpendicular to the sticking surface.

[0007] In some optional embodiments, the above device further comprises: at least one layer of plastic material laid on the substrate, the shear stress and strain rate of the plastic material being in direct proportion;

[0008] The plastic material is located between the substrate and the brittle material, or the plastic material is located between two layers of brittle material.

[0009] In some optional embodiments, the compressed length of the substrate, the thickness of the brittle material, the thickness of the plastic material and the thickness of the substrate are determined according to geological data of the geological structure to be simulated;

[0010] The thickness of the plastic material is smaller than the thickness of the brittle material, and the thickness of the hard plate is smaller than the thickness of the elastic material.

[0011] In some optional embodiments, the brittle material is at least one of dry quartz sand, micro glass beads, silicon powder, and corundum;

[0012] The plastic material is silica gel;

[0013] The hard board is a wooden board;

[0014] The elastic material is elastic foam.

[0015] In some optional embodiments, the above device further includes:

[0016] A protective layer is arranged below the substrate, above the brittle material, and around the substrate and the brittle material.

[0017] The embodiment of the present invention provides a method for manufacturing the above-mentioned passive rift simulation experimental device, comprising:

[0018] Paste the hard board and the elastic material alternately;

[0019] After the pasting is completed, the hard board and the elastic material are compressed by a set compression distance in a direction perpendicular to the pasting surface of the hard board and the elastic material;

[0020] After the length of the substrate is stable, at least one layer of brittle material is laid on the top surface of the substrate perpendicular to the bonding surface, or at least one layer of plastic material and at least one layer of brittle material are laid alternately.

[0021] The embodiment of the present invention provides a passive rift simulation experiment method, comprising: using the above-mentioned passive rift simulation experiment device to perform a simulation experiment, the method comprising:

[0022] Stretching the adhesive surface by a preset stretching distance in a vertical direction of the adhesive surface at a preset stretching speed;

[0023] During the stretching process, the passive rift simulation device is subjected to electronic computer tomography (CT) scanning at a preset scanning time interval to obtain CT scan images at different times, and the fracture characteristic data of the brittle material are analyzed based on the CT scan images. The geological characteristic parameters in the passive rift structure evolution process are obtained based on the fracture characteristic data analysis.

[0024] In some optional embodiments, the above method further comprises: analyzing flow characteristics of the plastic material based on the CT scan image;

[0025] The geological characteristic parameters in the passive rift tectonic evolution process are obtained based on the fracture characteristic data analysis, including:

[0026] According to the fracture characteristic data and the flow characteristics of the plastic material, the geological characteristic parameters in the passive rift structure evolution process are analyzed and obtained.

[0027] In some optional embodiments, the geological characteristic parameters include: at least one of a change characteristic parameter of a stratum, a change characteristic parameter of a fault, and a change characteristic parameter of a surface.

[0028] In some optional embodiments, analyzing the fracture characteristic data of the brittle material based on the CT scan image includes:

[0029] According to the X-ray intensity of the CT scan at different times, projection images of different sections of the brittle material are formed;

[0030] Analyze the fracture characteristic data of the brittle material according to the grayscale of each pixel of the brittle material part in the projection image;

[0031] Analyzing the flow characteristics of the plastic material based on the CT scan image, including:

[0032] According to the X-ray intensity of the CT scan at different times, projection images of different sections of the plastic material are formed;

[0033] According to the grayscale of each pixel of the plastic material part in the projection image, the flow characteristic data of the plastic material is analyzed.

[0034] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0035] The passive rift simulation experimental device provided in an embodiment of the present invention uses hard plates and elastic materials pasted alternately as a substrate, and a geological model is laid on the substrate after being pre-compressed for a certain distance. The geological model uses brittle materials as experimental materials for simulating faults to simulate the fracture bottom strata in the passive rift. The device is used for simulation experiments of passive rifts and can truly simulate the development and evolution process of passive rifts.

[0036] Preferably, a plastic material layer may be added to the geological model to simulate the fluid part of the stratum, thereby more realistically reproducing the development and evolution process of the passive rift.

[0037] The passive rift simulation experimental method provided by the embodiment of the present invention stretches the experimental device by a preset stretching distance to fracture the brittle material layer, so as to simulate the passive rift development and evolution process; during the stretching process, the passive rift simulation device is CT scanned, and the fracture characteristic data of the brittle material is analyzed based on the CT scan images at different times, and the geological characteristic parameters in the passive rift structural evolution process are obtained according to the fracture characteristic data analysis. Thus, the changes in various geological characteristics in the structural deformation evolution process of the dynamic rift can be recorded, the address evolution process of the passive rift can be observed and recorded, data support can be provided for analyzing the formation and evolution process of the passive rift, and the understanding of the relationship between the passive rift expansion and oil and gas can be improved.

[0038] Preferably, the flow characteristic data of plastic materials can be analyzed based on CT scan images at different times, and the changes in the fluid strata during the formation of passive rifts can be observed and recorded, so as to obtain analysis data that is closer to the true evolution process and further improve the understanding of the relationship between passive rift expansion and oil and gas.

[0039] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0040] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0042] Figure 1 This is an example diagram of an optional structure of a passive rift simulation experimental device in an embodiment of the present invention;

[0043] Figure 2 This is an example diagram of an optional structure of a passive rift simulation experimental device in an embodiment of the present invention;

[0044] Figure 3 This is an example diagram of an optional structure of a passive rift simulation experimental device in an embodiment of the present invention;

[0045] Figure 4 It is a flow chart of a method for manufacturing a passive rift simulation experimental device in an embodiment of the present invention;

[0046] Figure 5 Flow chart of the passive rift simulation experimental method in an embodiment of the present invention;

[0047] Figure 6 This is an example diagram of a CT scan image of a passive rift simulation experiment in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] Physical simulation of structural deformation is an experimental method to reproduce the deformation and evolution of geological structures under laboratory conditions. Currently, physical simulation of structural deformation has begun to be applied to the study of geological processes, providing qualitative and quantitative analysis for specific geological problems. The inventors of this application have found that the use of physical simulation experiments to simulate passive rifts can restore the development and evolution of underground passive rifts and improve the understanding of the relationship between passive rift expansion and oil and gas.

[0050] The physical simulation experiment is a forward simulation method that can better restore the entire evolution process of the passive rift from the time of non-deformation to the time of formation. Combined with industrial CT technology, it can analyze the changing laws of its internal strata, faults, etc. during the entire evolution process.

[0051] Based on this, in order to improve the understanding of the development and formation of passive rifts and tectonic evolution, the formation and evolution of passive rifts are simulated and restored through tectonic physical simulation experiments under laboratory conditions. The embodiment of the present invention provides a passive rift simulation experimental device, the structure of which is as follows: Figure 1 As shown, it includes: a base and at least one layer of brittle material laid on the base; the base includes a hard plate and an elastic material pasted alternately, and after the base is pasted, it is compressed by a set compression distance in a direction perpendicular to the pasting surface of the hard plate and the elastic material; the compression distance is greater than or equal to the tension distance preset in the passive rift simulation experiment; the brittle material is laid above the top surface of the base perpendicular to the pasting surface.

[0052] In some optional embodiments, an optional structure of the above device is as follows Figure 2 As shown, the device also includes: at least one layer of plastic material laid on the substrate, the shear stress and strain rate of the plastic material are proportional; the plastic material is located between the substrate and the brittle material, or the plastic material is located between two layers of brittle material. Figure 2 The example in which a layer of plastic material is located between a substrate and a brittle material is used.

[0053] In some optional embodiments, an optional structure of the above device is as follows Figure 3 As shown, the device also includes: a protective layer arranged below the substrate, above the brittle material, and around the substrate and the brittle material.

[0054] Optionally, the length of the base after compression, the thickness of the brittle material, the thickness of the plastic material and the thickness of the base are determined according to the geological data of the geological structure to be simulated; preferably, the thickness of the plastic material is less than the thickness of the brittle material, and the thickness of the hard plate is less than the thickness of the elastic material. For example, the length of the base before compression is 290 mm, the length of the base after compression is less than 210 mm, the thickness of the base is 5 cm, the thickness of the plastic material is 1 cm, the thickness of the brittle material is 3 cm, and the device is stretched by no more than 80 mm during the simulation experiment to simulate the formation process of the passive rift.

[0055] The above-mentioned device in the embodiment of the present invention is an experimental device that can restore the development and formation process of passive rifts by constructing physical simulation experiments.

[0056] Optionally, the brittle material selected in the tectonic physics simulation experiment includes at least one of dry quartz sand, micro glass beads, silicon powder, and corundum; its deformation and fracture characteristics follow the Mohr-Coulomb fracture criterion, and it has a small cohesive strength, which is an ideal material for simulating brittle deformation of the earth's crust. The plastic material used to simulate plastic deformation in the tectonic physics simulation experiment is silica gel; its shear stress and strain rate are proportional, which conforms to the deformation characteristics of Newtonian fluids.

[0057] The hard board in the above device can be a wooden board, and the elastic material can be an elastic foam.

[0058] The passive rift simulation experimental device uses hard plates and elastic materials pasted alternately as a substrate, and a geological model is laid on the substrate after being pre-compressed for a certain distance. The geological model uses brittle materials as experimental materials for simulating faults, simulating the fracture bottom strata in the passive rift. The device is used for simulation experiments of passive rifts and can truly simulate the development and evolution process of passive rifts. Preferably, a plastic material layer can also be added to the geological model to simulate the fluid part of the stratum, so as to more realistically reproduce the development and evolution process of the passive rift. The tectonic evolution process of the passive rift is restored under laboratory conditions, which improves the understanding of the relationship between passive rift tension and oil and gas.

[0059] Based on the same inventive concept, the embodiment of the present invention also provides a method for manufacturing a passive rift simulation experimental device, the process of which is as follows: Figure 4 As shown, the following steps are included:

[0060] Step S101: Paste the hard board and the elastic material alternately.

[0061] According to the similarity principle of structural physical simulation experiments, various parameters in the experimental device, including the length and thickness of the geological model, are calculated through the actual geological data to be simulated. The similarity between the geological model in the experimental device and the actual strata in geometry, kinematics and dynamics is guaranteed. For example, the cardboard uses hardwood boards and the elastic material uses soft elastic foam. The base of the passive rift is formed by alternately pasting hardwood boards and soft elastic foam.

[0062] Step S102: After the pasting is completed, compress the hard board and the elastic material by a set compression distance in a direction perpendicular to the pasting surface of the hard board and the elastic material.

[0063] Before laying the passive rift model, the basement is slowly compressed for a certain distance to ensure that its length after compression is consistent with the initial length of the calculated geological model, so that a sufficient distance can be stretched in subsequent simulation experiments.

[0064] Step S103: After the length of the substrate is stabilized, at least one layer of brittle material is laid on the top surface of the substrate perpendicular to the bonding surface, or at least one layer of plastic material and at least one layer of brittle material are laid alternately.

[0065] After the substrate is stabilized, a geological model is laid on the substrate. The geological model may include a brittle material layer and a plastic material layer.

[0066] Based on the same inventive concept, the embodiment of the present invention also provides a passive rift simulation experimental method, using the above-mentioned passive rift simulation device to perform a simulation experiment, the process is as follows Figure 5 As shown, including:

[0067] Step S201: stretching a preset stretching distance along a vertical direction of the pasting surface at a preset stretching speed.

[0068] The experimental device is uniformly stretched according to the set parameters so that the geological model therein produces uniform tensile deformation. The stretching distance is not greater than the compression distance of the substrate during the production process. Preferably, the stretching distance is consistent with the compression distance, which is basically equal to the distance by which the substrate is compressed before laying the model.

[0069] Step S202: During the stretching process, the passive rift simulation device is subjected to a CT scan at a preset scanning time interval to obtain CT scan images at different times.

[0070] Step S203: Analyze the fracture characteristic data of the brittle material based on the CT scan image, and obtain the geological characteristic parameters in the passive rift structure evolution process according to the fracture characteristic data analysis.

[0071] CT technology measures and records the intensity of X-rays passing through when scanning an object from multiple directions along a selected fault plane, forming projection data. The projection image is presented as a grayscale image. After obtaining the projection data, a certain mathematical method is used to calculate the attenuation coefficient of each pixel in the matrix corresponding to the spatial position of the object's fault (i.e., the spatial position corresponding to the brittle material layer in the geological model), thereby reconstructing the fault cross-sectional image of the object being tested. During the tensile test device, that is, during the deformation of the tectonic physical simulation experiment, the passive rift simulation test device, especially the geological model part thereof, is scanned using CT technology according to the pre-set parameters. The experimental device, especially the evolution characteristics of different positions inside the geological model during the tectonic deformation process, are recorded. The experimental device can be scanned at preset time intervals to record the deformation conditions at different times.

[0072] Among them, in step S203, the fracture characteristic data of the brittle material is analyzed based on the CT scan image, including: forming projection images of different cross-sections of the brittle material according to the X-ray intensity of the CT scan at different times; and analyzing the fracture characteristic data of the brittle material according to the grayscale of each pixel point of the brittle material part in the projection image.

[0073] In some optional embodiments, the method further includes: analyzing the flow characteristics of the plastic material based on the CT scan image; accordingly, obtaining the geological characteristic parameters in the passive rift tectonic evolution process according to the fracture characteristic data analysis, including: analyzing the geological characteristic parameters in the passive rift tectonic evolution process according to the fracture characteristic data and the flow characteristics of the plastic material. Accordingly, analyzing the flow characteristics of the plastic material based on the CT scan image includes: forming projection images of different sections of the plastic material according to the X-ray intensity of the CT scan at different times; analyzing the flow characteristic data of the plastic material according to the grayscale of each pixel point of the plastic material part in the projection image.

[0074] The geological characteristic parameters include at least one of the characteristic parameters of the formation change, the characteristic parameters of the fault change, and the characteristic parameters of the surface change. For example, the number of faults and the fault distance can be analyzed. The fault distance refers to the distance between the upper plate and the lower plate of the fault. The number of faults can be determined according to the fracture of the brittle material layer, and the fault distance can be determined according to the distance between the upper plate and the lower plate of the fault formed by the brittle material layer. For another example, the change of the formation thickness at different positions can be analyzed, such as the change of the formation thickness at different positions corresponding to the brittle material layer and the plastic material layer in the model. According to the various geological characteristic parameters such as the characteristic parameters of the formation change, the characteristic parameters of the fault change, and the characteristic parameters of the surface change obtained by the analysis, the evolution process of the passive rift tectonic deformation can be obtained. The CT three-dimensional scanning data is reconstructed and imaged by software, and the structural deformation process of the model is analyzed and discussed by comparing the structural styles of the geological model at different time points, so as to deepen the understanding of the evolution characteristics of the passive rift tectonic structure.

[0075] See also Figure 6 The passive rift simulation experiment CT scan images are shown in Figure 1. Figures a, b, and c are scanned images of different sections at different times. It can be seen from the figure that at different positions 1, 2, 3, 4, and 5, the fracture conditions of the brittle material layer are different, and the flow conditions of the plastic material layer are also different. Through multiple CT scan images, the structural deformation evolution at different stages in the passive rift evolution process can be obtained.

[0076] Regarding the methods and devices in the above embodiments, relevant contents are described in detail in one part, and will not be elaborated in detail in another part.

[0077] The passive rift simulation experimental method provided by the embodiment of the present invention stretches the experimental device by a preset stretching distance to fracture the brittle material layer, so as to simulate the passive rift development and evolution process; during the stretching process, the passive rift simulation device is CT scanned, and the fracture characteristic data of the brittle material is analyzed based on the CT scan images at different times, and the geological characteristic parameters in the passive rift structural evolution process are obtained according to the fracture characteristic data analysis. Thus, the changes in various geological characteristics in the structural deformation evolution process of the dynamic rift can be recorded, the address evolution process of the passive rift can be observed and recorded, data support can be provided for analyzing the formation and evolution process of the passive rift, and the understanding of the relationship between the passive rift expansion and oil and gas can be improved.

[0078] Preferably, the flow characteristic data of plastic materials can be analyzed based on CT scan images at different times, and the changes in the fluid strata during the formation of passive rifts can be observed and recorded, so as to obtain analysis data that is closer to the true evolution process and further improve the understanding of the relationship between passive rift expansion and oil and gas.

[0079] Unless otherwise specifically stated, terms such as processing, computing, calculating, determining, displaying, etc. may refer to the actions and / or processes of one or more processing or computing systems, or similar devices, which operate and convert data represented as physical (e.g., electronic) quantities within registers or memories of a processing system into other data similarly represented as physical quantities within memories, registers, or other such information storage, transmission, or display devices of the processing system. Information and signals may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0080] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0081] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0082] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein can all be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above around their functions. Whether such functions are implemented as hardware or software depends on specific applications and the design constraints imposed on the entire system. A skilled person can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of the present disclosure.

[0083] The steps of the method or algorithm described in conjunction with the embodiments herein may be directly embodied as hardware, a software module executed by a processor, or a combination thereof. The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The ASIC may be located in a user terminal. Of course, the processor and the storage medium may also be present in a user terminal as discrete components.

[0084] For software implementation, the techniques described in this application can be implemented with modules (e.g., procedures, functions, etc.) that perform the functions described in this application. These software codes can be stored in a memory unit and executed by a processor. The memory unit can be implemented within the processor or outside the processor. In the latter case, it is coupled to the processor in a communication manner via various means, which are well known in the art.

[0085] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A passive rift simulation experimental device, characterized in that: include: a substrate and at least one layer of brittle material laid on the substrate; The substrate comprises a hard plate and an elastic material pasted alternately, and after the substrate is pasted, it is compressed by a set compression distance in a direction perpendicular to the pasting surface of the hard plate and the elastic material; the compression distance is greater than or equal to the tension distance preset in the passive rift simulation experiment; The brittle material is laid on the top surface of the base perpendicular to the sticking surface.

2. The device according to claim 1, characterized in that Also includes: At least one layer of plastic material laid on the substrate, wherein the shear stress and strain rate of the plastic material are proportional to each other; The plastic material is located between the substrate and the brittle material, or the plastic material is located between two layers of brittle material.

3. The device according to claim 2, characterized in that The compressed length of the substrate, the thickness of the brittle material, the thickness of the plastic material and the thickness of the substrate are determined according to geological data of the geological structure to be simulated; The thickness of the plastic material is smaller than the thickness of the brittle material, and the thickness of the hard plate is smaller than the thickness of the elastic material.

4. The device according to claim 2, characterized in that The brittle material is at least one of dry quartz sand, micro glass beads, silicon powder, and corundum; The plastic material is silica gel; The hard board is a wooden board; The elastic material is elastic foam.

5. The device according to any one of claims 1 to 4, characterized in that: Also includes: A protective layer is arranged below the substrate, above the brittle material, and around the substrate and the brittle material.

6. A method for manufacturing a passive rift simulation experimental device as claimed in any one of claims 1 to 5, characterized in that: include: Paste the hard board and the elastic material alternately; After the pasting is completed, the hard board and the elastic material are compressed by a set compression distance in a direction perpendicular to the pasting surface of the hard board and the elastic material; After the length of the substrate is stable, at least one layer of brittle material is laid on the top surface of the substrate perpendicular to the bonding surface, or at least one layer of plastic material and at least one layer of brittle material are laid alternately.

7. A passive rift simulation experimental method, characterized in that: A simulation test is performed using the passive rift simulation experimental device as described in any one of claims 1 to 5, the method comprising: Stretching the adhesive surface by a preset stretching distance in a vertical direction of the adhesive surface at a preset stretching speed; During the stretching process, the passive rift simulation device is subjected to electronic computer tomography (CT) scanning at a preset scanning time interval to obtain CT scan images at different times, and the fracture characteristic data of the brittle material are analyzed based on the CT scan images. The geological characteristic parameters in the passive rift structure evolution process are obtained based on the fracture characteristic data analysis.

8. The method according to claim 7, characterized in that Also includes: analyzing flow characteristics of the plastic material based on the CT scan image; The geological characteristic parameters in the passive rift tectonic evolution process are obtained based on the fracture characteristic data analysis, including: According to the fracture characteristic data and the flow characteristics of the plastic material, the geological characteristic parameters in the passive rift structure evolution process are analyzed and obtained.

9. The method according to claim 7, characterized in that The geological characteristic parameters include: at least one of the following: a change characteristic parameter of a stratum, a change characteristic parameter of a fault, and a change characteristic parameter of the surface.

10. The method according to any one of claims 7 to 9, characterized in that: Analyzing fracture characteristic data of brittle materials based on the CT scan image includes: According to the X-ray intensity of the CT scan at different times, projection images of different sections of the brittle material are formed; Analyze the fracture characteristic data of the brittle material according to the grayscale of each pixel of the brittle material part in the projection image; Analyzing the flow characteristics of the plastic material based on the CT scan image, including: According to the X-ray intensity of the CT scan at different times, projection images of different sections of the plastic material are formed; According to the grayscale of each pixel of the plastic material part in the projection image, the flow characteristic data of the plastic material is analyzed.

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