Compressed air energy storage underground chamber pressure bearing test device and method, crack prediction method and device, medium and equipment

Abstract

The invention provides a compressed air energy storage underground chamber pressure bearing test device and method, a crack prediction method and device, a medium and equipment, and belongs to the technical field of compressed air energy storage underground chamber safety test. The testing device comprises a container, three loading shafts and a medium injection pipe. The axial direction of the medium injection pipe is the same as the axial direction of the second loading shaft, a containing space is arranged in the container and used for a rock sample, the rock sample is provided with a first through hole in the axial direction of the second loading shaft, the first through hole is used for simulating a compressed air energy storage underground chamber, and when the rock sample is contained in the containing space, the medium injection pipe is communicated with the first through hole; through the three loading shafts, space acting force can be applied to the rock sample. The test method is realized based on the test device. The prediction method and device, the medium and the equipment are realized based on the test method. The pressure-bearing test device and method, the crack prediction method and device, the medium and the equipment can provide reliable reference for operation of the real compressed air energy storage underground chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of safety testing of compressed air energy storage underground chambers, and in particular to a device and method for pressure testing of compressed air energy storage underground chambers, a crack prediction method, device, medium and equipment. Background Art

[0002] Compressed air energy storage technology has shown strong vitality in the field of new energy storage with its advantages of long power generation time, large scale, short construction period, long operation period, low engineering cost, environmental friendliness and high safety factor, which has effectively promoted the construction of new power systems and the high-quality development of new energy. It is a large-scale new energy storage technology suitable for large-scale promotion. Underground shallow compressed air energy storage chambers have become a hot spot for promoting green energy transformation, rapid development of new energy storage and safe and economical operation of power grids due to their advantages of not being restricted by geographical conditions, high stability and environmental friendliness. However, in the existing technology, the safety testing technology of compressed air energy storage underground chambers has not yet reached a very perfect level. Summary of the invention

[0003] In view of this, the present invention provides a compressed air energy storage underground chamber pressure testing device and method, a crack prediction method, device, medium and equipment, which can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the ultimate pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber, so as to be more suitable for practical use.

[0004] In order to achieve the above first purpose, the technical solution of the compressed air energy storage underground chamber pressure test device provided by the present invention is as follows:

[0005] The compressed air energy storage underground chamber pressure test device provided by the present invention comprises a container (5), a first loading shaft (17), a second loading shaft (19), a third loading shaft (18) and a medium injection pipe (4).

[0006] The axial direction of the medium injection pipe (4) is the same as the axial direction of the second loading shaft (19),

[0007] The container (5) is provided with a containing space (20), and the containing space (20) is used to contain the rock sample (1) to be tested.

[0008] The rock sample (1) to be tested is provided with a first through hole along the axial direction of the second loading axis (19), wherein the first through hole is used to simulate an underground chamber for compressed air energy storage.

[0009] When the rock sample (1) to be tested is accommodated in the accommodating space (20), the medium injection pipe (4) is connected to the first through hole, and a force in a spatial X direction can be applied to the rock sample (1) to be tested via the first loading shaft (17); a force in a spatial Y direction can be applied to the rock sample (1) to be tested via the second loading shaft (19); and a force in a spatial Z direction can be applied to the rock sample (1) to be tested via the third loading shaft (18).

[0010] The compressed air energy storage underground chamber pressure test device provided by the present invention can also be further implemented by adopting the following technical measures.

[0011] As a preference,

[0012] The first loading shaft (17) is divided into two sections and is respectively fixedly arranged on the outer sides of two corresponding side walls of the container (5) in the spatial X direction;

[0013] The second loading shaft (19) is divided into two sections and is respectively fixedly arranged on the outer sides of two corresponding side walls of the container (5) in the spatial Y direction;

[0014] The lower section of the third loading shaft (18) is fixedly arranged at the bottom of the container (5), and the upper section of the third loading shaft (18) is separately arranged from the container (5) to form a load applying device (6). By applying a force to the load applying device (6), a load can be applied to the rock sample (1) to be tested accommodated in the accommodating space (20).

[0015] Preferably, a second through hole is provided on the load applying device (6) along the space Z direction, and the accommodating space (20) can be connected with the outside through the second through hole.

[0016] Preferably, the second through holes include a plurality of holes which are evenly distributed on the load applying device (6).

[0017] Preferably, a sealing layer (2) is provided on the inner wall of the first through hole, and a sealed space can be formed in the first through hole through the sealing layer (2).

[0018] Preferably, the medium is water.

[0019] Preferably, the compressed air energy storage underground chamber pressure test device further comprises a water tank (11), a water pump (10) and a water pipe (21).

[0020] After the water pump (10) takes water from the water tank (11), the water is injected into the first through hole through the water pipe (21), so that pressure is applied in the first through hole by the water.

[0021] Preferably, the compressed air energy storage underground chamber pressure testing device further comprises a water pressure recorder (9), and the water pressure recorder (9) is used to obtain the water pressure in the water pipe (21).

[0022] Preferably, the compressed air energy storage underground chamber pressure test device further comprises a plurality of strain gauges (7) and strain meters (14),

[0023] The strain gauge (7) is fixedly arranged on the rock sample (1) to be tested.

[0024] The sensing data of the strain gauge (7) can be acquired by the strain meter (14).

[0025] Preferably, the compressed air energy storage underground chamber pressure test device further comprises a three-dimensional scanner (16).

[0026] The rock sample (1) to be tested obtained after the pressure test has cracks inside;

[0027] The three-dimensional scanner (16) can obtain a picture and / or video of the spatial morphology of the crack.

[0028] Preferably, the compressed air energy storage underground chamber pressure test device further comprises an acoustic emission sensor (8) and an acoustic emission instrument (12).

[0029] The acoustic emission sensor (8) is fixedly arranged inside the container (5).

[0030] The sensing data of the acoustic emission sensor (8) can be acquired by the acoustic emission acquirer (12).

[0031] In order to achieve the above second purpose, the technical solution of the compressed air energy storage underground chamber pressure test method provided by the present invention is as follows:

[0032] The pressure test method of the compressed air energy storage underground chamber pressure test device provided by the present invention comprises the following steps:

[0033] Assembling the compressed air energy storage underground chamber pressure test device;

[0034] Continuously injecting a medium into the first through hole through the medium injection pipe (4), so that the rock sample (1) to be tested cracks under the action of the medium;

[0035] After the pressure test is completed, the spatial morphology of the cracks generated in the rock sample (1) to be tested is detected.

[0036] The compressed air energy storage underground chamber pressure test method provided by the present invention can also be further implemented by adopting the following technical measures.

[0037] Preferably, the pressure test method of the compressed air energy storage underground chamber pressure test device further comprises the following steps:

[0038] Injecting a color-developing liquid medium into the cracks generated in the rock sample (1) to be tested, so that the color-developing liquid medium is filled in the cracks generated in the rock sample (1) to be tested;

[0039] By acquiring the spatial morphology of the cracks generated by the color-developing liquid medium filled in the rock sample (1) to be tested, the spatial morphology of the cracks generated in the rock sample (1) to be tested is obtained, wherein the spatial morphology of the cracks generated in the rock sample (1) to be tested includes the fine structure and distribution of the cracks.

[0040] In order to achieve the third objective above, the technical solution of the method for predicting crack development in a compressed air energy storage underground chamber pressure test provided by the present invention is as follows:

[0041] The method for predicting crack development in a compressed air energy storage underground chamber pressure test provided by the present invention comprises the following steps:

[0042] Acquiring in real time the progress of the crack of the rock sample (1) to be tested and the pressure of the medium in the first through hole;

[0043] According to the spatial development of the crack, the final spatial shape of the crack of the rock sample (1) to be tested under set pressure conditions is predicted.

[0044] In order to achieve the fourth objective, the technical solution of the compressed air energy storage underground chamber pressure test crack development prediction device provided by the present invention is as follows:

[0045] The device for predicting crack development in a compressed air energy storage underground chamber pressure test provided by the present invention comprises:

[0046] A pressure acquisition module, used for acquiring in real time the progress of the crack of the rock sample (1) to be tested, and the pressure of the medium in the first through hole;

[0047] The crack spatial morphology prediction module is used to predict the final spatial morphology of the crack of the rock sample (1) to be tested under set pressure conditions according to the spatial development of the crack.

[0048] In order to achieve the fifth objective above, the technical solution of the computer-readable storage medium provided by the present invention is as follows:

[0049] The computer-readable storage medium provided by the present invention stores a program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage. When the program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage is executed by a processor, the steps of the method for predicting crack development during a pressure test of an underground chamber for compressed air energy storage provided by the present invention are implemented.

[0050] In order to achieve the sixth objective, the technical solution of the electronic device provided by the present invention is as follows:

[0051] The electronic device provided by the present invention includes a memory and a processor, wherein the memory stores a program for predicting crack development during a pressure test of an underground chamber with compressed air energy storage. When the program for predicting crack development during a pressure test of an underground chamber with compressed air energy storage is executed by the processor, the steps of the method for predicting crack development during a pressure test of an underground chamber with compressed air energy storage provided by the present invention are implemented.

[0052] The compressed air energy storage underground chamber pressure test device and method provided by the embodiment of the present invention opens a first through hole in the axial direction of the rock sample 1 to be tested, which can simulate the compressed air underground chamber. During the test, the rock sample 1 to be tested is placed in the accommodating space 20 of the container 5 used in the compressed air energy storage underground chamber pressure test device, and a spatial force is applied to the rock sample 1 to be tested through the first loading axis 17, the second loading axis 19 and the third loading axis 18 to simulate the surrounding force environment of the rock sample 1 to be tested, and a medium is injected into the first through hole through the medium injection pipe 4. As the amount of medium injected into the first through hole gradually increases, the pressure on the inner cavity of the first through hole also gradually increases. On this basis, the rock sample 1 to be tested is subjected to forces in the inner cavity and the periphery at the same time, forming a force environment similar to the force condition of the compressed air energy storage underground chamber. On this basis, the crack prediction method, device, medium and equipment provided by the embodiment of the present invention based on the compressed air energy storage underground chamber pressure test method provided by the embodiment of the present invention can obtain the crack progress of the rock sample 1 to be tested in real time and predict the final spatial form of the crack. The pressure test conclusion obtained by simulating the compressed air energy storage underground chamber pressure test device and method provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the extreme pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0054] AttachedFigure 1 A schematic diagram of the structure of a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention;

[0055] Attached Figure 2 A schematic diagram of the association relationship between a camera and a strain gauge used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention;

[0056] Attached Figure 3 A schematic diagram of the structure of a three-dimensional scanner used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention;

[0057] Attached Figure 4 A schematic diagram of the three-dimensional structure of a triaxial loading mechanism in a typical direction used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention;

[0058] Attached Figure 5 A schematic diagram of the three-dimensional structure of a triaxial loading mechanism in a typical direction used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention (wherein the load application device is disassembled);

[0059] Attached Figure 6 A schematic diagram of the overall structure of a rock sample to be tested used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention (before pressure test);

[0060] Attached Figure 7 A schematic diagram of a cross-sectional structure of a typical XY plane of a rock sample to be tested used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention;

[0061] Attached Figure 8 A schematic diagram of the overall structure of a rock sample to be tested used in a compressed air energy storage underground chamber pressure test device provided in an embodiment of the present invention (after pressure test);

[0062] Attached Fig. 9 A flowchart of the steps of a method for testing the pressure of a compressed air energy storage underground chamber provided by an embodiment of the present invention;

[0063] Attached Fig.10 A flowchart of the steps of a method for predicting crack development during a pressure test of a compressed air energy storage underground chamber provided by an embodiment of the present invention;

[0064] Attached Fig.11 A signal flow chart between various functional modules used in a device for predicting crack development during pressure testing of a compressed air energy storage underground chamber provided in an embodiment of the present invention;

[0065] Fig.12A schematic diagram of the structure of a device for predicting crack development in a compressed air energy storage underground chamber pressure test in a hardware operating environment provided by an embodiment of the present invention;

[0066] Description of reference numerals:

[0067] 1- rock sample to be tested, 2- sealing layer, 3- rock layer, 4- medium injection pipe, 5- container, 6- load application device, 7- strain gauge, 8- acoustic emission sensor, 9- water pressure recorder, 10- water pump, 11- water tank, 12- acoustic emission instrument, 13- data acquisition system, 14- strain gauge, 15- camera, 16- 3D scanner, 17- first loading axis, 18- third loading axis, 19- second loading axis, 20- accommodating space, 21- water pipe. DETAILED DESCRIPTION

[0068] In view of this, the present invention provides a compressed air energy storage underground chamber pressure testing device and method, a crack prediction method, device, medium and equipment, which can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the ultimate pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber, so as to be more suitable for practical use.

[0069] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a device and method for testing the pressure of a compressed air energy storage underground chamber, a crack prediction method, device, medium and equipment proposed by the present invention, its specific implementation method, structure, characteristics and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0070] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may be met.

[0071] Compressed air energy storage underground chamber pressure test device

[0072] See attached Figure 1 -Attached Figure 8The compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention comprises a container 5, a first loading shaft 17, a second loading shaft 19, a third loading shaft 18 and a medium injection pipe 4. The axial direction of the medium injection pipe 4 is the same as the axial direction of the second loading shaft 19. A containing space 20 is provided in the container 5. The containing space 20 is used to contain the rock sample 1 to be tested. The rock sample 1 to be tested is provided with a first through hole along the axial direction of the second loading shaft 19, wherein the first through hole is used to simulate the compressed air energy storage underground chamber. When the rock sample 1 to be tested is contained in the containing space 20, the medium injection pipe 4 is connected with the first through hole, and a force in the spatial X direction can be applied to the rock sample 1 to be tested through the first loading shaft 17; a force in the spatial Y direction can be applied to the rock sample 1 to be tested through the second loading shaft 19; and a force in the spatial Z direction can be applied to the rock sample 1 to be tested through the third loading shaft 18.

[0073] The compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention has a first through hole in the axial direction of the rock sample 1 to be tested, which can simulate the compressed air underground chamber. During the test, the rock sample 1 to be tested is placed in the accommodating space 20 of the container 5 used in the compressed air energy storage underground chamber pressure test device, and a spatial force is applied to the rock sample 1 to be tested through the first loading axis 17, the second loading axis 19 and the third loading axis 18 to simulate the surrounding force environment of the rock sample 1 to be tested, and a medium is injected into the first through hole through the medium injection pipe 4. As the amount of medium injected into the first through hole gradually increases, the pressure on the inner cavity of the first through hole also gradually increases. On this basis, the rock sample 1 to be tested is subjected to forces in the inner cavity and the periphery at the same time, forming a force environment similar to the force condition of the compressed air energy storage underground chamber. The pressure test conclusion obtained by simulating the pressure test device for the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the ultimate pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0074] Among them, the first loading shaft 17 is divided into two sections and fixedly arranged on the outer sides of the two side walls corresponding to the container 5 in the spatial X direction. The second loading shaft 19 is divided into two sections and fixedly arranged on the outer sides of the two side walls corresponding to the container 5 in the spatial Y direction. The lower section of the third loading shaft 18 is fixedly arranged at the bottom of the container 5, and the upper section of the third loading shaft 18 is separated from the container 5 to form a load applying device 6. By applying a force to the load applying device 6, a load can be applied to the rock sample 1 to be tested accommodated in the accommodating space 20. In this case, after the load applying device 6 is removed, an opening is formed above the container 5, and the rock sample 1 to be tested can be placed in the accommodating space 20. On this basis, applying a force to the load applying device 6 can make the rock sample 1 to be tested simultaneously bear the forces in the X direction, the Y direction, and the Z direction. Therefore, the installation of the rock sample 1 to be tested can be made simpler, and the realization of the force environment of the rock sample 1 to be tested is not affected.

[0075] Among them, a second through hole is provided on the load applying device 6 along the Z direction of the space, and the accommodating space 20 can be connected to the outside through the second through hole. In this case, once the force in the first through hole of the rock sample 1 to be tested, and the forces in the X direction, Y direction, and Z direction are all applied, the rock sample 1 to be tested will crack, causing the medium in the first through hole to overflow part of the medium through the second through hole, thereby ensuring the application safety of the compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention.

[0076] Among them, the second through holes include multiple ones, which are evenly distributed on the load applying device 6. In this case, when cracks are generated at multiple positions of the rock sample 1 to be tested, the overflowing medium can smoothly overflow through the second through holes, which can better ensure the application safety of the compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention.

[0077] Among them, a sealing layer 2 is provided on the inner wall of the first through hole, and a sealed space can be formed in the first through hole through the sealing layer 2. Generally, in order to prevent leakage of compressed air stored in the compressed air energy storage underground chamber, a sealing layer is usually provided on the inner wall of the underground chamber. By introducing the sealing layer 2 provided by the embodiment of the present invention, the simulated environment can be closer to the compressed air energy storage underground chamber in actual application, and the obtained test results can be closer to the actual situation.

[0078] Wherein, the medium is water. In this case, the cost of the medium is lower, the extraction is more convenient, and environmental pollution can be avoided.

[0079] The compressed air energy storage underground chamber pressure test device further includes a water tank 11, a water pump 10 and a water pipe 21. After the water pump 10 takes water from the water tank 11, it injects water into the first through hole through the water pipe 21, so that pressure is applied to the first through hole through the water. In this case, the water tank 11 and the water pump 10 can be used to apply pressure to the first through hole, which is simpler to implement and has lower cost.

[0080] The compressed air energy storage underground chamber pressure test device further includes a water pressure recorder 9, which is used to obtain the water pressure in the water pipe 21. In this case, since the inner cavity of the first through hole is in a connected state with the water pipe 21, the water pressure in the water pipe 21 can be obtained by obtaining the water pressure in the water pipe 21 through the water pressure recorder 9, and the water pressure borne by the inner cavity of the first through hole can be obtained, and data acquisition is more convenient.

[0081] The compressed air energy storage underground chamber pressure test device further includes a plurality of strain gauges 7 and strain meters 14. The strain gauge 7 is fixedly arranged on the rock sample 1 to be tested, and the sensing data of the strain gauge 7 can be acquired by the strain meter 14. In this case, the confining pressure borne by the rock sample 1 to be tested can be acquired through the strain gauge 7 and the strain meter 14, and data acquisition is simpler and more convenient.

[0082] Among them, the compressed air energy storage underground chamber pressure test device also includes a three-dimensional scanner 16. There are cracks inside the rock sample 1 to be tested after the pressure test. The three-dimensional scanner 16 can obtain a spatial morphological picture and / or video of the cracks. In this case, the three-dimensional scanner 16 can be used to obtain the fine structure and distribution of the cracks generated in the rock sample 1 to be tested without destroying the rock sample 1 to be tested. In this embodiment, the three-dimensional scanner 16 can be a CT device.

[0083] Among them, the compressed air energy storage underground chamber pressure test device also includes an acoustic emission sensor 8 and an acoustic emission instrument 12. The acoustic emission sensor 8 is fixedly arranged inside the container 5, and the sensing data of the acoustic emission sensor 8 can be acquired by the acoustic emission acquisition instrument 12. In this case, the acoustic data in the test process can be easily acquired through the acoustic emission sensor 8 and the acoustic emission instrument 12.

[0084] Compressed air energy storage underground chamber pressure test method

[0085] See attached Fig. 9 The pressure test method of the compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention includes the following steps:

[0086] Step S1: assembling a compressed air energy storage underground chamber pressure test device;

[0087] Step S2: continuously injecting medium into the first through hole through the medium injection pipe 4, so that cracks occur in the rock sample 1 to be tested under the action of the medium;

[0088] Step S3: After the pressure test is completed, the spatial morphology of the cracks generated in the rock sample 1 to be tested is detected.

[0089] The compressed air energy storage underground chamber pressure test method provided by the embodiment of the present invention opens a first through hole in the axial direction of the rock sample 1 to be tested, which can simulate the compressed air underground chamber. During the test, the rock sample 1 to be tested is placed in the accommodating space 20 of the container 5 used in the compressed air energy storage underground chamber pressure test device, and a spatial force is applied to the rock sample 1 to be tested through the first loading axis 17, the second loading axis 19 and the third loading axis 18 to simulate the surrounding force environment of the rock sample 1 to be tested, and a medium is injected into the first through hole through the medium injection pipe 4. As the amount of medium injected into the first through hole gradually increases, the pressure on the inner cavity of the first through hole also gradually increases. On this basis, the rock sample 1 to be tested is subjected to forces in the inner cavity and the periphery at the same time, forming a force environment similar to the force condition of the compressed air energy storage underground chamber. The pressure test conclusion obtained by simulating the pressure test method for the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the ultimate pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0090] Among them, the pressure test method of the compressed air energy storage underground chamber pressure test device provided by the embodiment of the present invention also includes the following steps:

[0091] Step S4: injecting a color-developing liquid medium into the cracks generated in the rock sample 1 to be tested, so that the color-developing liquid medium is filled in the cracks generated in the rock sample 1 to be tested;

[0092] Step S5: obtaining the spatial morphology of the cracks generated in the rock sample 1 to be tested by acquiring the spatial morphology of the color-developing liquid medium in the cracks generated in the rock sample 1 to be tested, wherein the spatial morphology of the cracks generated in the rock sample 1 to be tested includes the fine structure and distribution of the cracks.

[0093] In this case, since there is a large color difference between the color-developing liquid medium and the rock sample 1 to be tested, the fine structure and distribution of the cracks can be more clearly obtained through the filling of the color-developing liquid medium in the cracks of the rock sample 1 to be tested. The method is simple and convenient.

[0094] Crack development prediction method for compressed air energy storage underground chamber pressure test

[0095] See attached Fig.10The method for predicting crack development in a compressed air energy storage underground chamber pressure test provided by the present invention comprises the following steps:

[0096] Real-time acquisition of the progress of the cracks in the rock sample 1 to be tested and the pressure of the medium in the first through hole;

[0097] According to the spatial development of the crack, the final spatial shape of the crack development of the rock sample 1 to be tested under the set pressure conditions is predicted.

[0098] The crack prediction method implemented by the pressure test method of the compressed air energy storage underground chamber provided by the embodiment of the present invention can obtain the crack progress of the rock sample 1 to be tested in real time and predict the final spatial form of the crack. The pressure test conclusion obtained by simulation by the pressure test device of the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the extreme pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0099] This embodiment can predict the final spatial morphology of the cracks in the rock sample 1 to be tested by machine learning. Specifically,

[0100] Firstly, the crack spatial morphology of the historical test sample and the final spatial morphology of the crack of the historical test sample under the set pressure are obtained to obtain the crack database of the historical test sample;

[0101] Then, according to the crack spatial morphology of the sample to be tested and the final spatial morphology of the crack under the set pressure, the correlation between the crack and the characteristic parameters of the crack spatial morphology and the numerical values ​​of the characteristic parameters is obtained;

[0102] Finally, according to the characteristic parameters of the current rock sample 1 to be tested and the values ​​of the characteristic parameters, the final spatial shape of the current rock sample 1 to be tested under the set pressure is obtained.

[0103] In addition, the characteristic parameters of the current rock sample 1 to be tested, the values ​​of the characteristic parameters, and the final spatial shape of the current rock sample 1 to be tested under the set pressure can also be added to the crack database of the historical test samples, so that the crack prediction method implemented by the compressed air energy storage underground chamber pressure testing method provided by the embodiment of the present invention has an iterative function. In this case, as the number of tests of the rock sample 1 to be tested increases, the prediction conclusion is closer to the actual situation.

[0104] Compressed air energy storage underground chamber pressure test crack development prediction device

[0105] See attached Fig.11The device for predicting crack development in a compressed air energy storage underground chamber pressure test provided by the present invention comprises:

[0106] A pressure acquisition module, used for acquiring in real time the progress of the cracks in the rock sample 1 to be tested, and the pressure of the medium in the first through hole;

[0107] The crack spatial morphology prediction module is used to predict the final spatial morphology of the crack development of the rock sample 1 to be tested under set pressure conditions according to the spatial development of the crack.

[0108] The crack prediction device implemented by the pressure test method of the compressed air energy storage underground chamber provided by the embodiment of the present invention obtains the crack progress of the rock sample 1 to be tested in real time and predicts the final spatial form of the crack. The pressure test conclusion obtained by simulation by the pressure test device of the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the extreme pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0109] Computer readable storage medium

[0110] The computer-readable storage medium provided by the present invention stores a program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage. When the program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage is executed by a processor, the steps of the method for predicting crack development during a pressure test of an underground chamber for compressed air energy storage provided by the present invention are implemented.

[0111] The computer-readable storage medium provided by the embodiment of the present invention can obtain the crack progress of the rock sample 1 to be tested in real time and predict the final spatial form of the crack. The pressure test conclusion obtained by simulating the pressure test device of the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the extreme pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0112] Electronic devices

[0113] The electronic device provided by the present invention includes a memory and a processor. The memory stores a program for predicting crack development during a pressure test of an underground chamber with compressed air energy storage. When the program for predicting crack development during a pressure test of an underground chamber with compressed air energy storage is executed by the processor, the steps of the method for predicting crack development during a pressure test of an underground chamber with compressed air energy storage provided by the present invention are implemented.

[0114] The electronic device provided by the embodiment of the present invention can obtain the crack progress of the rock sample 1 to be tested in real time and predict the final spatial form of the crack. The pressure test conclusion obtained by simulating the pressure test device of the compressed air energy storage underground chamber provided by the embodiment of the present invention is more similar to the actual situation. Therefore, it can simulate the dynamic evolution of cracks in the compressed air energy storage underground chamber under the extreme pressure state, and provide a more reliable reference for the safe operation of the real compressed air energy storage underground chamber.

[0115] Reference Fig.12 , Fig.12 This is a schematic diagram of the structure of a device for predicting crack development in a compressed air energy storage underground chamber pressure test in the hardware operating environment involved in an embodiment of the present invention.

[0116] like Fig.12 As shown, the compressed air energy storage underground chamber pressure test crack development prediction device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0117] Those skilled in the art will understand that Fig.12 The structure shown in the figure does not constitute a limitation on the crack growth prediction device for the compressed air energy storage underground chamber pressure test, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0118] like Fig.12 As shown, the memory 1005 as a storage medium may include an operating system, a data storage module, a network communication module, a user interface module, and a compressed air energy storage underground chamber pressure test crack development prediction program.

[0119] exist Fig.12In the compressed air energy storage underground chamber pressure test crack development prediction device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the compressed air energy storage underground chamber pressure test crack development prediction device of the present invention can be arranged in the compressed air energy storage underground chamber pressure test crack development prediction device, and the compressed air energy storage underground chamber pressure test crack development prediction program stored in the memory 1005 is called by the processor 1001, and the compressed air energy storage underground chamber pressure test crack development prediction method provided in the embodiment of the present invention is executed.

[0120] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0121] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A compressed air energy storage underground chamber pressure test device, characterized in that: It comprises a container (5), a first loading shaft (17), a second loading shaft (19), a third loading shaft (18) and a medium injection pipe (4), The axial direction of the medium injection pipe (4) is the same as the axial direction of the second loading shaft (19), The container (5) is provided with a containing space (20), and the containing space (20) is used to contain the rock sample (1) to be tested. The rock sample (1) to be tested is provided with a first through hole along the axial direction of the second loading axis (19), wherein the first through hole is used to simulate an underground chamber for compressed air energy storage. When the rock sample (1) to be tested is accommodated in the accommodating space (20), the medium injection pipe (4) is connected to the first through hole, and a force in a spatial X direction can be applied to the rock sample (1) to be tested via the first loading shaft (17); a force in a spatial Y direction can be applied to the rock sample (1) to be tested via the second loading shaft (19); and a force in a spatial Z direction can be applied to the rock sample (1) to be tested via the third loading shaft (18).

2. The compressed air energy storage underground chamber pressure test device according to claim 1, characterized in that: The first loading shaft (17) is divided into two sections and is respectively fixedly arranged on the outer sides of two corresponding side walls of the container (5) in the spatial X direction; The second loading shaft (19) is divided into two sections and is respectively fixedly arranged on the outer sides of two corresponding side walls of the container (5) in the spatial Y direction; The lower section of the third loading shaft (18) is fixedly arranged at the bottom of the container (5), and the upper section of the third loading shaft (18) is separately arranged from the container (5) to form a load applying device (6). By applying a force to the load applying device (6), a load can be applied to the rock sample (1) to be tested accommodated in the accommodating space (20).

3. The compressed air energy storage underground chamber pressure test device according to claim 2, characterized in that: The load applying device (6) is provided with a second through hole along the space Z direction, and the accommodating space (20) can be connected with the outside through the second through hole.

4. The compressed air energy storage underground chamber pressure test device according to claim 3, characterized in that: The second through holes include a plurality of holes which are evenly distributed on the load applying device (6); Preferably, a sealing layer (2) is provided on the inner wall of the first through hole, and a sealed space can be formed in the first through hole through the sealing layer (2); Preferably, the medium is water; Preferably, the compressed air energy storage underground chamber pressure test device further comprises a water tank (11), a water pump (10) and a water pipe (21). After the water pump (10) takes water from the water tank (11), the water is injected into the first through hole through the water pipe (21), so that pressure is applied to the first through hole by the water; Preferably, the compressed air energy storage underground chamber pressure test device further comprises a water pressure recorder (9), wherein the water pressure recorder (9) is used to obtain the water pressure in the water pipe (21); Preferably, the compressed air energy storage underground chamber pressure test device further comprises a plurality of strain gauges (7) and strain meters (14), The strain gauge (7) is fixedly arranged on the rock sample (1) to be tested. The sensing data of the strain gauge (7) can be acquired by the strain meter (14); Preferably, the compressed air energy storage underground chamber pressure test device further comprises a three-dimensional scanner (16). The rock sample (1) to be tested obtained after the pressure test has cracks inside; The three-dimensional scanner (16) can obtain a spatial morphological image and / or video of the crack; Preferably, the compressed air energy storage underground chamber pressure test device further comprises an acoustic emission sensor (8) and an acoustic emission instrument (12). The acoustic emission sensor (8) is fixedly arranged inside the container (5). The sensing data of the acoustic emission sensor (8) can be acquired by the acoustic emission acquirer (12).

5. A pressure test method for a compressed air energy storage underground chamber pressure test device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Assembling the compressed air energy storage underground chamber pressure test device; Continuously injecting a medium into the first through hole through the medium injection pipe (4), so that the rock sample (1) to be tested cracks under the action of the medium; After the pressure test is completed, the spatial morphology of the cracks generated in the rock sample (1) to be tested is detected.

6. The pressure test method of the compressed air energy storage underground chamber pressure test device according to claim 5, characterized in that: The following steps are also included: Injecting a color-developing liquid medium into the cracks generated in the rock sample (1) to be tested, so that the color-developing liquid medium is filled in the cracks generated in the rock sample (1) to be tested; By acquiring the spatial morphology of the cracks generated by the color-developing liquid medium filled in the rock sample (1) to be tested, the spatial morphology of the cracks generated in the rock sample (1) to be tested is obtained, wherein the spatial morphology of the cracks generated in the rock sample (1) to be tested includes the fine structure and distribution of the cracks.

7. A method for predicting crack development in a compressed air energy storage underground chamber pressure test, characterized in that: The method for predicting crack development during pressure test of a compressed air energy storage underground chamber is implemented based on a pressure test method of a compressed air energy storage underground chamber pressure test device, and the method for predicting crack development during pressure test of a compressed air energy storage underground chamber comprises the following steps: Acquiring in real time the progress of the crack of the rock sample (1) to be tested and the pressure of the medium in the first through hole; According to the spatial development of the crack, the final spatial shape of the crack of the rock sample (1) to be tested under set pressure conditions is predicted.

8. A device for predicting crack development during pressure test of a compressed air energy storage underground chamber, characterized in that: The device for predicting crack development during pressure test of compressed air energy storage underground chamber is realized based on the pressure test method of the device for predicting crack development during pressure test of compressed air energy storage underground chamber. The device for predicting crack development during pressure test of compressed air energy storage underground chamber comprises: A pressure acquisition module, used for acquiring in real time the progress of the crack of the rock sample (1) to be tested, and the pressure of the medium in the first through hole; The crack spatial morphology prediction module is used to predict the final spatial morphology of the crack of the rock sample (1) to be tested under set pressure conditions according to the spatial development of the crack.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage. When the program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage is executed by the processor, the steps of the method for predicting crack development during a pressure test of an underground chamber for compressed air energy storage described in claim 7 are implemented.

10. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage, and when the program for predicting crack development during a pressure test of an underground chamber for compressed air energy storage is executed by the processor, the steps of the method for predicting crack development during a pressure test of an underground chamber for compressed air energy storage described in claim 7 are implemented.

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