Physical model system for simulating multi-parameter monitoring in hot dry rock mining process

Abstract

The invention relates to the technical field of geothermal exploitation, in particular to a physical model system for simulating multi-parameter monitoring in a hot dry rock exploitation process, comprising a stratum module which is used for simulating a hot dry rock stratum state and has a temperature compensation function; the heat storage module is installed in the stratum module in an embedded mode, and the heat storage module is fractured through a fracturing assembly arranged outside the stratum module. The heat pump module injects fluid into the heat storage module according to a set working condition, then the fluid naturally flows out, and the hot dry rock mining process is simulated; and the test module is arranged in the stratum module and is used for acquiring experimental data. The device is compact in structure, convenient to use and flexible to adjust, simulation of the real hot dry rock mining process is achieved through modular design, simulation trueness is high, real-time monitoring of multiple parameters is achieved, and powerful support is provided for analyzing physical and mechanical properties and microscopic characteristics in the hot dry rock mining process.

Description

Technical Field

[0001] The present invention relates to the technical field of geothermal mining, and in particular to a physical model system for simulating multi-parameter monitoring of a hot dry rock mining process. Background Art

[0002] The high-temperature characteristics of the formation have a significant impact on the efficiency and stability of hot dry rock mining. Therefore, in the research field of hot dry rock mining technology, a physical model system that simulates the geothermal development process is crucial for understanding and optimizing the operating mechanism of the enhanced geothermal system (EGS).

[0003] However, existing physical model systems have many limitations when simulating the hot dry rock mining process. Some systems cannot accurately simulate the high temperature environment of the formation and its impact on the mining process, or cannot fully monitor the changes in multiple parameters during the mining process. Specifically, existing simulation systems often have difficulty reaching the required high temperature range or cannot effectively compensate for changes in formation temperature. In addition, the permeability of the thermal reservoir is a key factor affecting the flow of geothermal fluids and heat extraction, and existing simulation systems have shortcomings in simulating thermal reservoirs with different permeabilities. At the same time, multi-parameter monitoring such as temperature changes, fluid properties, thermal fracture conditions, and stress changes during the mining process is crucial for evaluating mining results and optimizing mining strategies, but existing monitoring systems often cannot fully cover these parameters.

[0004] Therefore, there is an urgent need for a physical model system that simulates multi-parameter monitoring of the hot dry rock mining process to overcome the limitations of existing technologies. Summary of the Invention

[0005] The purpose of the present invention is to provide a physical model system for simulating multi-parameter monitoring of the hot dry rock mining process, to achieve comprehensive simulation and multi-parameter monitoring of the hot dry rock mining process, to provide strong support for optimizing the operating mechanism of EGS and improving geothermal mining efficiency, and to solve the problems existing in the existing technology.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a physical model system for simulating multi-parameter monitoring of hot dry rock mining process, comprising:

[0007] A formation module, which is used to simulate the state of a hot dry rock formation and has a temperature compensation function;

[0008] A heat storage module, wherein the heat storage module is embedded in the formation module and is fractured by a fracturing assembly disposed outside the formation module;

[0009] A heat pump module, which injects fluid into the heat storage module according to set working conditions and then flows out naturally, simulating the process of hot dry rock mining;

[0010] A test module is provided in the formation module to obtain experimental data.

[0011] Preferably, the formation module includes a container, in which a simulation component for simulating the formation structure is arranged, the inner cavity of the simulation component is preset with a prefabricated groove, and the heat storage module is embedded and installed in the prefabricated groove.

[0012] Preferably, the simulation assembly includes a plurality of test blocks, which are stacked in the container and wrap the heat storage module.

[0013] Preferably, the fracturing assembly comprises a fracturing fluid injection port provided on the outer wall of the container, and fracturing fluid is injected into the container through the fracturing fluid injection port to pre-compress and fracture the heat storage module.

[0014] Preferably, the formation module further comprises a temperature compensation component, wherein the temperature compensation component abuts against the bottom end of the container and is used to provide temperature compensation for the test module.

[0015] Preferably, the heat storage module includes a standard sample embedded in the prefabricated groove, and the heat pump module extends into the standard sample to inject fluid into the standard sample.

[0016] Preferably, the heat pump module includes corresponding injection pipes and output pipes, the injection pipes and the output pipes are respectively connected to the standard sample, the injection pipe injects fluid into the standard sample, and the fluid flows out naturally through the output pipe.

[0017] Preferably, the heat pump module further includes a first water tank and a second water tank, a peristaltic pump is provided between the injection pipe and the first water tank to inject the fluid in the first water tank into the standard sample according to a set pressure; the output pipe is connected to the second water tank to store the naturally flowing fluid.

[0018] Preferably, the data acquired by the test module include the temperature of the formation module, the confining pressure of the formation module, the fracture condition of the formation module, the stress change of the formation module, the flow rate of the fluid, and the pressure of the fluid.

[0019] Preferably, the test module includes:

[0020] a strain measurement system for measuring stress, deformation and temperature field distribution characteristics on the surface of the formation module;

[0021] thermocouples, used to monitor temperature changes at different locations inside the simulation component;

[0022] a miniature stress probe for monitoring stress changes at different locations within the simulated component;

[0023] an acoustic emission probe, used to monitor stress changes at different locations inside the simulated component;

[0024] a first flow meter, for measuring the fluid inflow of the standard sample;

[0025] a second flow meter, for measuring the fluid outflow of the standard sample;

[0026] a first thermometer and pressure gauge, used to measure the fluid inflow pressure of the standard sample;

[0027] The second thermometer and pressure gauge is used to measure the fluid outflow pressure of the standard sample.

[0028] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses a physical model system for multi-parameter monitoring of the dry hot rock mining process. Through the coordinated work of the formation module, the heat storage module, the heat pump module and the test module, the system can comprehensively simulate the multi-field parameter changes in the dry hot rock mining process, including the temperature field, stress field and seepage field, etc.; at the same time, the system can synchronously test the temperature, flow rate and pressure parameters of the fluid before and after flowing through the geothermal reservoir, as well as the thermal fracture characteristics of the formation and the heat reservoir, the temperature field distribution on the model surface and the evolution characteristics of stress and strain, etc., to provide rich data support for in-depth analysis of the physical mechanism in the geothermal development process; the formation module is used to simulate the state of the dry hot rock formation and has a temperature compensation function to ensure the temperature accuracy and stability during the simulation process; the heat storage module It is embedded and installed in the formation module to simulate the geothermal reservoir. It can be fractured by the fracturing component installed outside the formation module to obtain heat reservoirs with different permeabilities. It can simulate the various permeability conditions of the real geothermal reservoir, thereby meeting the needs under different experimental conditions; the heat pump module is used to simulate the fluid injection and outflow during the hot dry rock mining process. It can press the fluid into the formation module at a constant flow rate or flow rate according to the set working conditions. The fluid then flows out naturally, and the injection pressure is adjusted according to the test temperature to simulate the real mining conditions to adapt to different mining simulation needs; the test module is set in the formation module, which can obtain experimental data in real time and accurately, and can comprehensively and accurately record and analyze the changes in multiple field parameters during the experiment, providing strong support for the analysis of the physical and mechanical properties and microscopic characteristics of the geothermal mining process.

[0029] The present invention has a compact structure, is easy to use, and is flexible to adjust. Through modular design, it can simulate the actual hot dry rock mining process. The simulation has high realism and can realize real-time monitoring of multiple parameters, providing strong support for analyzing the physical and mechanical properties and microscopic characteristics of the hot dry rock mining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0031] Figure 1 Schematic diagram of the physical model system for simulating multi-parameter monitoring of hot dry rock mining process in this invention

[0032] Figure 2 Schematic diagram of the physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to the present invention;

[0033] In the figure: 1. Formation module; 2. Heat storage module; 3. Heat pump module; 4. Test module; 11. Container; 12. Prefabricated groove; 13. Test block; 14. Fracturing fluid injection port; 15. Temperature compensation component; 21. Standard specimen; 31. Injection pipe; 32. Output pipe; 33. First water tank; 34. Second water tank; 35. Peristaltic pump; 36. Control valve; 41. Strain measurement system; 42. Thermocouple; 43. Micro stress probe; 44. Acoustic emission probe; 45. First flow meter; 46. Second flow meter; 47. First thermometer and pressure gauge; 48. Second thermometer and pressure gauge. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figures 1 to 2 As shown, this embodiment provides a physical model system for simulating multi-parameter monitoring of hot dry rock mining process, including:

[0037] Formation module 1, which is used to simulate the state of hot dry rock formations and has a temperature compensation function;

[0038] The heat storage module 2 is embedded in the formation module 1 and is fractured by a fracturing assembly provided outside the formation module 1;

[0039] Heat pump module 3, heat pump module 3 injects fluid into heat storage module 2 according to the set working conditions, and then flows out naturally, simulating the process of hot dry rock mining;

[0040] Testing module 4: Testing module 4 is set in formation module 1 to obtain experimental data.

[0041] The present invention discloses a physical model system for multi-parameter monitoring during the simulation of hot dry rock mining. Through the coordinated work of the formation module 1, the heat storage module 2, the heat pump module 3 and the test module 4, the system can fully simulate the changes of multiple parameters during the hot dry rock mining process, including temperature field, stress field and seepage field, etc.; at the same time, the system can synchronously test parameters such as temperature, flow rate and pressure before and after the fluid flows through the geothermal reservoir, as well as the thermal fracture characteristics of the formation and the heat reservoir, the temperature field distribution on the model surface and the evolution characteristics of stress and strain, etc., to provide rich data support for in-depth analysis of the physical mechanism in the geothermal development process; the formation module 1 is used to simulate the state of the hot dry rock formation and has a temperature compensation function to ensure the temperature accuracy and stability during the simulation process; the heat storage module 2 is embedded in the formation module 1, The simulated geothermal reservoir can be fractured by a fracturing assembly disposed outside the formation module 1 to obtain a thermal reservoir with different permeabilities, thereby simulating the various permeability conditions of a real geothermal reservoir, thereby meeting the requirements under different experimental conditions; the heat pump module 3 is used to simulate the fluid injection and outflow during the hot dry rock mining process, and can press the fluid into the formation module 1 at a constant flow rate or flow rate according to the set working conditions, and the fluid then flows out naturally. The injection pressure is adjusted according to the test temperature to simulate the actual mining conditions and meet different mining simulation requirements; the test module 4 is disposed in the formation module 1, and can obtain experimental data in real time and accurately, and can comprehensively and accurately record and analyze the changes in multiple parameters during the experiment, providing strong support for analyzing the physical and mechanical properties and microscopic characteristics of the geothermal mining process. The present invention has a compact structure, is easy to use, and is flexible to adjust. Through modular design, it can simulate the real hot dry rock mining process, with high simulation authenticity, and realize real-time monitoring of multiple parameters, providing strong support for analyzing the physical and mechanical properties and microscopic characteristics of the hot dry rock mining process.

[0042] In a further optimization scheme, the formation module 1 includes a container 11, which is equipped with a simulation component for simulating the formation structure. The simulation component has a prefabricated groove 12 in the inner cavity, and the heat storage module 2 is embedded and installed in the prefabricated groove 12. The formation module 1 includes the container 11 and the simulation component. The simulation component is installed in the container 11 to form a relatively independent space, reducing the impact of the external environment on the simulation experiment, enabling a more realistic simulation of the formation structure and improving the accuracy of the simulation. The heat storage module 2 is embedded and installed in the prefabricated groove 12 of the simulation component, which allows for easy installation and removal of the heat storage module 2, improving the flexibility and maintainability of the system.

[0043] In one embodiment of the present invention, the inner cavity of the container 11 is designed as a rectangular parallelepiped with a length of 0.4m, a width of 0.4m and a height of 0.8m. The simulation component is abutted against the inner cavity of the container 11 to limit the simulation component to facilitate simulation and form a closed simulation environment.

[0044] A further optimized solution involves a simulation assembly comprising several test blocks 13, which are stacked within container 11 and enclose the heat storage module 2. This stacked assembly, with prefabricated grooves 12 positioned, provides greater flexibility, allowing the number and placement of test blocks 13 to be adjusted as needed to accommodate varying simulation requirements. The heat storage module 2 is then placed within the container, enclosing it to enhance the simulation's containment and accuracy.

[0045] In one embodiment of the present invention, the test block 13 is made of “Luhui” granite and is directly assembled into the required simulation components in the container 11 .

[0046] In a further optimization scheme, the fracturing assembly includes a fracturing fluid injection port 14 disposed on the outer wall of the container 11. Fracturing fluid is injected into the container 11 through the fracturing fluid injection port 14 to pre-compress and fracture the heat storage module 2. The fracturing fluid injection ports 14 are evenly distributed on the outer wall of the container 11 and are used to inject fracturing fluid into the container 11 to pre-compress and fracture the heat storage module 2. This makes the fracturing process more flexible and controllable, allowing the pressure and flow of the fracturing fluid to be adjusted as needed to obtain heat reservoirs with different permeabilities.

[0047] As a further optimization, the formation module 1 also includes a temperature compensation assembly 15, which abuts the bottom end of the container 11 and provides temperature compensation for the test module 4. This assembly, constructed of a track-type, high-temperature ceramic heating belt with a temperature control program, is installed at the bottom end of the container 11 and regulates the temperature of the simulation components, providing temperature compensation and improving the accuracy and stability of the test module 4.

[0048] In one embodiment of the present invention, the maximum heating temperature of the temperature compensation component 15 can reach 800°C.

[0049] In a further optimization, the heat storage module 2 includes a standard sample 21 embedded in a prefabricated groove 12. The heat pump module 3 extends into the standard sample 21 and injects fluid into the standard sample 21. This inclusion of the standard sample 21, which fits within the prefabricated groove 12, makes the heat storage module 2 more standardized and controllable, facilitating simulation experiments under different conditions. The heat pump module 3 injects fluid into the standard sample 21 and allows it to be freely discharged, enhancing the realism and accuracy of the simulation.

[0050] In one embodiment of the present invention, the standard sample 21 is a cylinder with a diameter of 50 mm and a height of 100 mm.

[0051] In one embodiment of the present invention, standard samples 21 with different permeabilities can be obtained by injecting fracturing fluids of different pressures into the standard samples 21 through the fracturing fluid injection port 14 for fracturing, and their three-dimensional structural information can be obtained through micro-nano CT scanning.

[0052] In a further optimization scheme, the heat pump module 3 includes corresponding injection pipes 31 and output pipes 32, each connected to the standard sample 21. The injection pipe 31 injects fluid into the standard sample 21, and the fluid naturally flows out through the output pipe 32. The injection pipes 31 and output pipes 32 form a complete mining cycle, allowing the heat pump module 3 to easily control the injection and outflow of fluid, simulating the fluid circulation during hot dry rock mining. The injection pipe 31 injects fluids of varying pressures into the standard sample 21, and the injected fluid naturally flows out through the output pipe 32, simulating real mining conditions and improving the accuracy of the simulation.

[0053] In one embodiment of the present invention, the injection pressure of the injection pipe 31 depends on the test temperature.

[0054] In one embodiment of the present invention, a control valve 36 is provided on the injection pipe 31 to control the fluid flow of the injection pipe 31, thereby achieving precise control of the fluid.

[0055] To further optimize the solution, the heat pump module 3 also includes a first water tank 33 and a second water tank 34. A peristaltic pump 35 is provided between the injection pipe 31 and the first water tank 33 to inject the fluid in the first water tank 33 into the standard sample 21 according to the set pressure. The output pipe 32 is connected to the second water tank 34 to store the naturally flowing fluid. The first water tank 33 is used to store the injected fluid, while the second water tank 34 is used to store the naturally flowing fluid. This allows for convenient storage and recovery of the fluid, improving the efficiency and environmental friendliness of the experiment. The peristaltic pump 35 is provided on the injection pipe 31. The peristaltic pump 35 provides a matching pressure based on the test temperature and inputs the fluid at the target pressure into the standard sample 21, making the injection of the fluid more precise and controllable, and the pressure and flow of the fluid adjustable as needed.

[0056] Further optimizing the solution, test module 4 acquires data including the temperature of formation module 1, confining pressure of formation module 1, fracture conditions of formation module 1, stress changes in formation module 1, fluid flow rate, and fluid pressure. Test module 4 is a comprehensive testing system capable of monitoring temperature, confining pressure, acoustic emission, fluid flow rate, and pressure. It can acquire comprehensive experimental data, including key parameters such as formation module 1's temperature, confining pressure, fracture conditions, stress changes, and fluid flow rate and pressure. This provides strong support for in-depth analysis of the physical mechanisms involved in hot dry rock mining.

[0057] To further optimize the solution, test module 4 includes:

[0058] The strain measurement system 41 is used to measure the stress, deformation and temperature field distribution characteristics on the surface of the formation module 1;

[0059] Thermocouples 42, used to monitor temperature changes at different locations inside the simulation component;

[0060] A micro stress probe 43 is used to monitor stress changes at different locations inside the simulated component;

[0061] an acoustic emission probe 44 for monitoring stress changes at different locations within the simulated component;

[0062] A first flow meter 45 is used to measure the fluid inflow of the standard sample 21;

[0063] A second flow meter 46 is used to measure the fluid outflow of the standard sample 21;

[0064] A first thermometer and pressure gauge 47 is used to measure the fluid inflow pressure of the standard sample 21;

[0065] The second thermometer and pressure gauge 48 is used to measure the outflow pressure of the fluid of the standard sample 21 .

[0066] The test module 4 mainly includes several pre-buried thermocouples 42 to monitor the temperature changes at different positions of the formation, a first thermometer and pressure gauge 47 and a first flowmeter 45 to measure the temperature, pressure and flow of fluid injection, a second thermometer and pressure gauge 48 and a second flowmeter 46 to measure the temperature, pressure and flow of fluid naturally flowing out, an acoustic emission probe 44 to measure the thermal fracture conditions inside the system during the test, a pre-buried micro stress probe 43 to test the stress changes at different positions of the formation, and a strain measurement system 41 to measure the stress, deformation and temperature field distribution characteristics of the model surface during the test. These sensors and monitoring equipment can measure and record the changes of multiple parameters during the experiment with high precision, providing accurate data support for the analysis of the physical and mechanical properties and microscopic characteristics of hot dry rock mining. At the same time, the integrated design of these devices makes the test module 4 more compact and efficient.

[0067] In one embodiment of the present invention, the device can carry out geothermal development physical simulation tests under different conditions such as formation temperature, fluid temperature, fluid flow rate and heat reservoir permeability, and obtain the temperature field distribution and stress and strain evolution characteristics of the model surface during geothermal development. By combining the synchronous testing of the above multiple parameters, the evolution process of the temperature field, stress field and seepage field during geothermal development and the intrinsic correlation information and change law of the system's heat output capacity and parameters such as ground temperature, fluid temperature, heat reservoir permeability, fluid flow rate, etc. are obtained; after the test, the formation module 1 is split and sampled by professional rock cutting and drilling equipment, and then the physical and mechanical properties and microscopic characteristics such as density, wave velocity, permeability, resistivity, thermal conductivity, stress strain, and three-dimensional structure of the samples from different parts are tested.

[0068] Test steps:

[0069] System assembly and preheating

[0070] Place the container 11 of the formation module 1 on a stable workbench to ensure that the container 11 is stable and well sealed.

[0071] The simulation components with prefabricated grooves are stacked in the container 11 in a preset manner to form a simulated stratum structure.

[0072] The standard sample 21 of the heat storage module 2 is embedded and installed in the prefabricated groove 12 to ensure that the standard sample 21 is in close contact with the simulation component.

[0073] Connect the injection pipe 31 and the output pipe 32 of the heat pump module 3 to the standard sample 21, and ensure that the connection is sealed without leakage.

[0074] Install the various sensors and measuring equipment of the test module 4, including the strain measurement system 41, the thermocouple 42, the micro stress probe 43, the acoustic emission probe 44, the first flow meter 45, the second flow meter 46, the first thermometer 47 and the second thermometer 48, and ensure that all sensors and measuring equipment are working properly and connected to the data acquisition system.

[0075] The temperature compensation component 15 , such as a crawler-type high-temperature ceramic heating belt, is started to preheat the formation module 1 to a preset temperature to ensure system stability.

[0076] Fracturing fluid is injected into the container 11 through the fracturing fluid injection port 14 to hydraulically fracture the heat storage module 2 to achieve the desired permeability. During the fracturing process, pressure changes must be monitored to ensure the fracturing effect.

[0077] The peristaltic pump 35 is started to inject the fluid in the first water tank 33 into the standard sample 21 at the set pressure and flow rate. During the injection process, the fluid pressure and flow rate need to be monitored to ensure that the fluid flows according to the preset working conditions.

[0078] The fluid naturally flows out of the standard sample 21 into the second water tank 34 , and the temperature, pressure, and flow rate of the fluid when it flows out are recorded.

[0079] During the fluid injection and outflow process, various data obtained by the test module 4 are continuously monitored and recorded, including the temperature, confining pressure, fracture conditions, stress changes, and fluid flow rate and pressure of the formation module 1.

[0080] The strain measurement system 41 is used to take pictures of the stress, deformation and temperature field distribution characteristics of the model surface, and the pictures are analyzed through a data processing program.

[0081] According to the data from the thermocouple 42 and the micro stress probe 43 , the temperature and stress changes at different positions inside the formation module 1 are analyzed.

[0082] The data from the acoustic emission probe 44 is used to analyze the thermal fracture characteristics of the formation and heat reservoir during geothermal production.

[0083] Based on the data from the first flow meter 45, the second flow meter 46, the first thermobarometer 47 and the second thermobarometer 48, the variation characteristics of the thermal reservoir permeability and the heat production capacity are calculated.

[0084] After the test, turn off all equipment and sensors and disconnect the power supply.

[0085] Use professional rock cutting and drilling equipment to split and sample the formation module 1.

[0086] The physical and mechanical properties and microscopic characteristics of samples in different parts are tested, including density, wave velocity, permeability, resistivity, thermal conductivity, stress and strain, and three-dimensional structure.

[0087] Organize and analyze test data and write test reports.

[0088] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0089] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A physical model system for multi-parameter monitoring of hot dry rock mining process, characterized by include: A formation module (1), the formation module (1) is used to simulate the state of a hot dry rock formation, and the formation module (1) has a temperature compensation function; A heat storage module (2), the heat storage module (2) being embedded and installed in the formation module (1), the heat storage module (2) being fractured by a fracturing assembly arranged outside the formation module (1); A heat pump module (3), wherein the heat pump module (3) injects fluid into the heat storage module (2) according to a set working condition, and then the fluid flows out naturally, simulating the process of hot dry rock mining; A test module (4) is provided in the formation module (1) to obtain experimental data.

2. The physical model system for multi-parameter monitoring of a simulated hot dry rock mining process according to claim 1 is characterized by: The stratum module (1) comprises a container (11), a simulation component for simulating a stratum structure is arranged in the container (11), a prefabricated groove (12) is preset in the inner cavity of the simulation component, and the heat storage module (2) is embedded and installed in the prefabricated groove (12).

3. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 2 is characterized by: The simulation assembly includes a plurality of test blocks (13), and the test blocks (13) are stacked in the container (11) and wrap the heat storage module (2).

4. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 2 is characterized by: The fracturing assembly comprises a fracturing fluid injection port (14) arranged on the outer wall of the container (11), and fracturing fluid is injected into the container (11) through the fracturing fluid injection port (14) to pre-compress and fracture the heat storage module (2).

5. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 2 is characterized by: The formation module (1) further comprises a temperature compensation component (15), wherein the temperature compensation component (15) abuts against the bottom end of the container (11) and is used to provide temperature compensation for the test module (4).

6. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 2 is characterized by: The heat storage module (2) comprises a standard sample (21) embedded in the prefabricated groove (12), and the heat pump module (3) extends into the standard sample (21) to inject fluid into the standard sample (21).

7. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 6 is characterized by: The heat pump module (3) comprises an injection pipe (31) and an output pipe (32) which are respectively arranged. The injection pipe (31) and the output pipe (32) are respectively connected to the standard sample (21). The injection pipe (31) injects fluid into the standard sample (21), and the fluid flows out naturally through the output pipe (32).

8. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 7 is characterized by: The heat pump module (3) further comprises a first water tank (33) and a second water tank (34); a peristaltic pump (35) is provided between the injection pipe (31) and the first water tank (33) to inject the fluid in the first water tank (33) into the standard sample (21) according to a set pressure; and the output pipe (32) is connected to the second water tank (34) to store the fluid that flows out naturally.

9. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 6, characterized in that: The data acquired by the test module (4) include the temperature of the formation module (1), the confining pressure of the formation module (1), the fracture condition of the formation module (1), the stress change of the formation module (1), the flow rate of the fluid, and the pressure of the fluid.

10. The physical model system for simulating multi-parameter monitoring of hot dry rock mining process according to claim 9, characterized in that The test module (4) comprises: A strain measurement system (41) for measuring stress, deformation and temperature field distribution characteristics on the surface of the formation module (1); Thermocouples (42) for monitoring temperature changes at different locations within the simulation component; A micro stress probe (43) for monitoring stress changes at different locations within the simulation component; an acoustic emission probe (44) for monitoring stress changes at different locations within the simulated component; a first flow meter (45) for measuring the fluid inflow of the standard sample (21); a second flow meter (46) for measuring the fluid outflow of the standard sample (21); a first thermobarometer (47) for measuring the fluid inflow pressure of the standard sample (21); The second thermometer (48) is used to measure the fluid outflow pressure of the standard sample (21).

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