Microseismic monitoring of mine goaf fissure method, device, equipment and medium
By employing microseismic monitoring methods and downhole directional drilling technology, the problem of large detection errors in the floor cracks of mined-out areas was solved, enabling precise detection and grouting repair. This provided a scientific basis for the construction of underground reservoirs and saved costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEBEI UNIV OF ENG
- Filing Date
- 2023-06-25
- Publication Date
- 2026-07-24
AI Technical Summary
The detection of floor cracks in the goaf of mines has large errors and low accuracy, making it impossible to accurately detect weak zones. This results in a lack of scientific basis for the construction of underground reservoirs and a significant waste of time and manpower.
The microseismic monitoring method was adopted. By injecting tracers during the water pumping test, the development location of the fracture zone was predicted using a microseismic vertical monitoring network. This was then combined with downhole directional drilling for correction and grouting repair.
It reduced the error in crack detection, improved accuracy, saved time and labor costs, and provided effective geological data for the construction of underground reservoirs.
Smart Images
Figure CN116953783B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of coal mining technology, and in particular to a method, apparatus, equipment and medium for microseismic monitoring of cracks in goaf areas of mines. Background Technology
[0002] The poor sealing of underground water storage spaces in abandoned mines can lead to a continuous supply of water from adjacent goaf areas, preventing the underground reservoirs from emptying and thus hindering the release of water from the upper reservoirs. Even after the underground water storage spaces in mines are emptied, the released water leaks through fissures in the goaf areas and cannot be stored. Therefore, it is necessary to survey underground coal mines, especially the goaf areas within the mining area, and to implement sealing measures for sections prone to seepage to achieve the required sealing.
[0003] Because the closure and development of floor fissures in mined-out areas are impossible to obtain after mining, there is a lack of scientific basis for evaluating whether the overall assessment of the mined-out area meets the requirements for reservoir construction. Furthermore, the strong shielding characteristics and volume effect of mined-out areas severely affect the quality of geophysical exploration, resulting in large errors and low accuracy in fissure detection. This also incurs significant time and manpower costs, making it impossible to accurately detect weak zones in the floor of the mined-out areas. Summary of the Invention
[0004] In view of this, the present disclosure provides a method, apparatus, equipment and medium for microseismic monitoring of cracks in mine goaf areas, which can reduce the detection error of cracks in mine goaf areas, improve the accuracy of crack detection in mine goaf areas, accurately detect weak zones in the floor of mine goaf areas, and save time and labor costs.
[0005] In a first aspect, the present disclosure provides a method for microseismic monitoring of fractures in goaf areas of mines, employing the following technical solution:
[0006] During the water drainage test of the goaf in the mine, a tracer is injected into a designated aquifer, and the water drainage test is conducted on the goaf. The water drainage test includes a drainage test and a pumping test, and the designated aquifer is the aquifer closest to the goaf.
[0007] If the tracer is found in the water extracted through the pumping test, a fracture zone is determined to exist;
[0008] The location of crack development corresponding to the fracture zone is predicted by using a pre-established microseismic vertical monitoring network.
[0009] In some embodiments, before predicting the crack development location corresponding to the fracture zone using a pre-established microseismic vertical monitoring network, the method further includes:
[0010] The flow direction from the designated aquifer to the fracture zone is determined by the pumping test.
[0011] Furthermore, the prediction of the crack development location corresponding to the fracture zone through a pre-established microseismic vertical monitoring network includes:
[0012] The flow direction is monitored using the pre-established microseismic vertical monitoring network to obtain microseismic data;
[0013] The location of the crack development is determined based on the magnitude of the microseismic data.
[0014] In some embodiments, the method further includes:
[0015] The location of the fracture was corrected and confirmed by downhole directional drilling, and the fracture zone was repaired by grouting after the existence of the fracture zone was confirmed.
[0016] In some embodiments, the step of correcting and confirming the location of the fracture development through downhole directional drilling includes:
[0017] Obtain drilling fluid loss data;
[0018] If the drilling fluid loss data is greater than or equal to a preset data, it is determined that the borehole formed by downhole directional drilling is connected to the fracture zone;
[0019] In the event of a drill bit falling out of the drill rod and into a hole or fissure in the fracture zone, the fracture zone is corrected and repaired by drilling and grouting.
[0020] Secondly, this disclosure also provides a device for microseismic monitoring of fractures in mine goaf areas, employing the following technical solution:
[0021] The test unit is configured to inject a tracer into a designated aquifer and conduct a water drainage test on the goaf during a water drainage test on the goaf; wherein the water drainage test includes a water drainage test and a water pumping test, and the designated aquifer is the aquifer closest to the goaf.
[0022] A fracture zone determination unit is configured to determine the presence of a fracture zone if the tracer is found in the water extracted by the pumping test.
[0023] The prediction unit is configured to predict the location of crack development corresponding to the fracture zone through a pre-established microseismic vertical monitoring network.
[0024] In some embodiments, it also includes:
[0025] The flow direction confirmation unit is configured to determine the flow direction from the designated aquifer to the fracture zone through the pumping test;
[0026] The prediction unit includes:
[0027] The monitoring module is configured to monitor the flow direction using the pre-established microseismic vertical monitoring network to obtain microseismic data;
[0028] The crack development location confirmation module is configured to determine the crack development location based on the magnitude of the microseismic data.
[0029] In some embodiments, the apparatus further includes:
[0030] The correction and confirmation unit is configured to correct and confirm the location of the fracture development through downhole directional drilling, and to perform grouting repair on the fracture zone after confirming its existence.
[0031] In some embodiments, the correction and confirmation unit includes:
[0032] The acquisition unit is configured to acquire drilling fluid loss data;
[0033] The connectivity confirmation unit is configured to determine, when the drilling fluid loss data is greater than or equal to a preset data, that the borehole formed by downhole directional drilling is connected to the fracture zone.
[0034] The correction and grouting repair unit is configured to correct and grout the fracture zone by drilling in the event of a drill bit falling out of the drill rod and into a hole or fracture in the fracture zone.
[0035] Thirdly, this disclosure also provides an electronic device that adopts the following technical solution:
[0036] The electronic device includes:
[0037] At least one processor; and,
[0038] A memory communicatively connected to the at least one processor; wherein,
[0039] The memory stores instructions that can be executed by the at least one processor, which enables the at least one processor to perform any of the above-described methods for microseismic monitoring of mine goaf fractures.
[0040] Fourthly, embodiments of this disclosure also provide a computer-readable storage medium storing computer instructions for causing a computer to execute any of the above-described methods for microseismic monitoring of mine goaf fractures.
[0041] This disclosure provides a method for microseismic monitoring of cracks in mine goaf areas, which can reduce the detection error of cracks in mine goaf areas, improve the accuracy of crack detection in mine goaf areas, accurately detect weak zones in the bottom plate of mine goaf areas, predict the development location of cracks corresponding to the crack zones, provide effective geological data for the subsequent construction of underground reservoirs, and save time and manpower costs.
[0042] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0043] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0044] Figure 1 A schematic flowchart illustrating a method for microseismic monitoring of fractures in a mine goaf, provided as an embodiment of this disclosure;
[0045] Figure 2 A schematic diagram of water pumping and microseismic monitoring provided in the embodiments of this disclosure;
[0046] Figure 3 This is a schematic diagram of the structure of a downhole directional drilling provided in an embodiment of this disclosure;
[0047] Figure 4 A schematic diagram of the structure of a device for monitoring microseismic cracks in a mine goaf, provided in an embodiment of this disclosure;
[0048] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. Detailed Implementation
[0049] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.
[0050] It should be understood that the following specific examples illustrate the implementation of this disclosure, and those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0051] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0052] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this disclosure. The drawings only show the components related to this disclosure and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0053] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.
[0054] Figure 1 This is a flowchart illustrating a method for microseismic monitoring of fractures in a mine goaf, as provided in this embodiment of the disclosure. The method includes the following steps:
[0055] S101. During the water drainage test of the goaf in the mine, a tracer is injected into a designated aquifer, and a water drainage test is conducted on the goaf in the mine; wherein, the water drainage test includes a water discharge test and a water pumping test, and the designated aquifer is the aquifer closest to the goaf in the mine.
[0056] Optionally, the results of the pumping test and the results of the discharge test are obtained respectively based on the pumping test and the discharge test, wherein the pumping test refers to pumping water from the goaf area of the mine to the upper reservoir, and the discharge test refers to releasing water from the upper reservoir to the lower reservoir.
[0057] Alternatively, the nearest aquifer may include a known recharge aquifer under known hydrogeological conditions.
[0058] S102. If a tracer is found in the water extracted through a pumping test, the existence of a fracture zone is confirmed.
[0059] S103. Predict the location of crack development corresponding to the fracture zone through a pre-established microseismic vertical monitoring network.
[0060] In some embodiments, before predicting the location of crack development corresponding to the fracture zone using a pre-established microseismic vertical monitoring network, the method further includes:
[0061] The flow direction from a designated aquifer to the fracture zone is determined by pumping tests;
[0062] Furthermore, by using a pre-established microseismic vertical monitoring network, the location of crack development corresponding to the fracture zone is predicted, including:
[0063] The flow direction is monitored using a pre-established microseismic vertical monitoring network to obtain microseismic data;
[0064] The location of crack development is determined based on the magnitude of the microseismic data.
[0065] Figure 2 This is a schematic diagram of the water pumping test and microseismic monitoring provided in the embodiments of this disclosure. In the embodiments of this disclosure, a microseismic vertical monitoring network is established between the goaf and the recharge aquifer. The water pumping test can determine the flow direction of the aquifer to the fracture zone. The possible fracture conduction direction is monitored by the microseismic vertical monitoring network. The activated fracture channels and fracture development locations are determined by the data flow magnitude of the microseismic data.
[0066] In some embodiments, the method further includes:
[0067] The location of the fracture was corrected and confirmed by downhole directional drilling, and the fracture zone was repaired by grouting after the existence of the fracture zone was confirmed.
[0068] Figure 3 This is a schematic diagram of the underground directional drilling structure provided in an embodiment of the present disclosure. Underground directional drilling is used to construct drill holes in the roadway of the goaf in the working face of a mine, and several sets of drill holes are arranged for monitoring the fracture zone. The goaf includes coal seams, limestone layers, and sandstone layers.
[0069] In some embodiments, the location of fracture development is corrected and confirmed through downhole directional drilling, including:
[0070] Obtain drilling fluid loss data;
[0071] If the drilling fluid loss data is greater than or equal to the preset data, it is determined that the borehole formed by downhole directional drilling is connected to the fracture zone.
[0072] In the event of a drill bit falling out of the drill rod and into a hole or fissure in the fracture zone, the fracture zone is corrected and repaired by drilling and grouting.
[0073] Optionally, a drill bit falling out of the drill pipe and into the hole constitutes a lost drill bit situation. For example, if a large hole or fracture is encountered in a fracture zone, the drill bit may fall into the hole or fracture, resulting in a lost drill bit situation. During drilling, drilling fluid will permeate into the voids or fissures in the wellbore under pressure; this property is called filtration. On the wellbore under different geological conditions, drilling fluid is lost along voids, fractures, cavities, etc. During the filtration process, mud cake is formed on the wellbore, which reduces or stops the filtration. By using a precision volume sensor, the cumulative filtration amount (i.e., drilling fluid leakage data) over a period of time can be measured, and the change in filtration amount throughout the entire test process can be recorded to plot the filtration curve and accurately calculate the initial filtration amount and the instantaneous filtration amount at any given moment. By differentiating the filtration amount, a filtration gradient curve can be obtained, making the trend of filtration change clear at a glance.
[0074] This disclosure utilizes a multi-method, three-dimensional spatial comprehensive optimization and detection approach, incorporating pumping tests, microseismic monitoring, and downhole directional drilling. It leverages the multi-method target parameter constraints of the mined-out area to systematically monitor and confirm weak zones in the mined-out floor, thereby effectively improving the stability of the underground reservoir and increasing the utilization range of the mined-out area. Specifically, pumping tests qualitatively confirm whether a vertical water-guiding channel exists between the mined-out area and the aquifer. Simultaneously, a vertical microseismic monitoring network quantitatively observes the weak zones, capturing the development and extension direction and influence range of fracture zones. Drilling confirms this, followed by correction and grouting repair. This process predicts and provides early warnings for unstable areas in the mined-out area of the underground reservoir, offering effective geological data for subsequent underground reservoir construction.
[0075] Figure 4 This is a schematic diagram of a device for microseismic monitoring of fractures in a mine goaf, provided in an embodiment of this disclosure. This disclosure also provides a device for microseismic monitoring of fractures in a mine goaf, comprising:
[0076] Test unit 41 is configured to inject tracer into a designated aquifer and conduct a water drainage test on the goaf during the water drainage test on the goaf. The water drainage test includes a water drainage test and a water pumping test, and the designated aquifer is the aquifer closest to the goaf.
[0077] The fracture zone determination unit 42 is configured to determine the presence of a fracture zone if a tracer is found in the water extracted by a pumping test.
[0078] Prediction unit 43 is configured to predict the location of crack development corresponding to the fracture zone through a pre-established microseismic vertical monitoring network.
[0079] In some embodiments, the device further includes:
[0080] The flow direction confirmation unit is configured to determine the flow direction from a specified aquifer to the fracture zone through a pumping test;
[0081] Prediction unit 43 includes:
[0082] The monitoring module is configured to monitor the flow direction using a pre-established microseismic vertical monitoring network to obtain microseismic data;
[0083] The crack development location confirmation module is configured to determine the crack development location based on the magnitude of the microseismic data.
[0084] In some embodiments, the device further includes:
[0085] The correction and confirmation unit is configured to correct and confirm the location of fracture development through downhole directional drilling, and to grout the fracture zone after confirming its existence.
[0086] In some embodiments, the correction and confirmation unit includes:
[0087] The acquisition unit is configured to acquire drilling fluid loss data;
[0088] The connectivity confirmation unit is configured to determine that the borehole formed by downhole directional drilling is connected to the fracture zone if the drilling fluid loss data is greater than or equal to a preset data.
[0089] The correction and grouting repair unit is configured to correct and grout the fracture zone through drilling in the event of a drill fall.
[0090] An electronic device according to embodiments of the present disclosure includes a memory and a processor. The memory is used to store non-transitory computer-readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory. The non-volatile memory may, for example, include read-only memory (ROM), a hard disk, flash memory, etc.
[0091] The processor may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of this disclosure, the processor is used to execute computer-readable instructions stored in the memory, causing the electronic device to perform all or part of the steps of the microseismic monitoring method for mine goaf fractures described in the foregoing embodiments of this disclosure.
[0092] Those skilled in the art will understand that, in order to solve the technical problem of how to achieve a good user experience, this embodiment may also include well-known structures such as communication buses and interfaces, and these well-known structures should also be included within the protection scope of this disclosure.
[0093] like Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. It illustrates a structural schematic diagram suitable for implementing the electronic device in the embodiment of the present disclosure. Figure 5 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments disclosed herein.
[0094] like Figure 5 As shown, an electronic device may include a processor (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on a program stored in read-only memory (ROM) or a program loaded from a storage device into random access memory (RAM). The RAM also stores various programs and data required for the operation of the electronic device. The processor, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.
[0095] Typically, the following devices can be connected to the I / O interface: input devices, such as sensors or visual information acquisition devices; output devices, such as displays; storage devices, such as magnetic tapes or hard drives; and communication devices. Communication devices allow electronic devices to communicate wirelessly or wiredly with other devices (such as edge computing devices) to exchange data. Although Figure 5Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have instead.
[0096] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processor, all or part of the steps of the method for microseismic monitoring of mine goaf fractures according to embodiments of this disclosure are performed.
[0097] For a detailed description of this embodiment, please refer to the corresponding descriptions in the foregoing embodiments, which will not be repeated here.
[0098] A computer-readable storage medium according to embodiments of the present disclosure stores non-transitory computer-readable instructions thereon. When the non-transitory computer-readable instructions are executed by a processor, all or part of the steps of the methods for microseismic monitoring of mine goaf fractures according to the foregoing embodiments of the present disclosure are performed.
[0099] The aforementioned computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or portable hard drive), media with built-in rewritable non-volatile memory (e.g., memory card), and media with built-in ROM (e.g., ROM cartridge).
[0100] For a detailed description of this embodiment, please refer to the corresponding descriptions in the foregoing embodiments, which will not be repeated here.
[0101] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.
[0102] In this disclosure, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The block diagrams of devices, apparatuses, devices, and systems involved in this disclosure are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as "comprising," "including," "having," etc., are open-ended terms meaning "including but not limited to," and are used interchangeably with them. The terms "or" and "and" as used herein refer to the terms "and / or," and are used interchangeably with them unless the context clearly indicates otherwise. The term "such as" as used herein refers to the phrase "such as but not limited to," and is used interchangeably with it.
[0103] Additionally, as used herein, the “or” used in a list of items beginning with “at least one” indicates a separate list, such that a list of, for example, “at least one of A, B, or C” means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word “exemplary” does not imply that the described example is preferred or better than other examples.
[0104] It should also be noted that in the systems and methods of this disclosure, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions to this disclosure.
[0105] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufactures, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufactures, events, means, methods, or actions within their scope.
[0106] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.
[0107] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.
Claims
1. A method for microseismic monitoring of fractures in goaf areas of mines, characterized in that, include: During the water drainage test of the goaf, a tracer is injected into a designated aquifer, and the water drainage test is conducted on the goaf. The water drainage test includes a drainage test and a pumping test. The pumping test involves pumping water from the goaf to an upper reservoir, and the drainage test involves releasing water from the upper reservoir to a lower reservoir. The designated aquifer is the aquifer closest to the goaf. If the tracer is found in the water extracted through the pumping test, a fracture zone is determined to exist; the flow direction from the designated aquifer to the fracture zone is determined through the pumping test. By using a pre-established microseismic vertical monitoring network, the location of crack development corresponding to the fracture zone is predicted. Specifically, the microseismic vertical monitoring network is used to quantitatively monitor the weak zone and capture the development and extension direction and influence range of the fracture zone. The location of the fracture is corrected and confirmed by downhole directional drilling, and the fracture zone is repaired by grouting after confirmation. The correction and confirmation of the fracture location by downhole directional drilling includes: obtaining drilling fluid loss data; determining that the borehole formed by downhole directional drilling is connected to the fracture zone if the drilling fluid loss data is greater than or equal to a preset data; and correcting and repairing the fracture zone by drilling if the drill bit detaches from the drill pipe and falls into a hole or fracture in the fracture zone.
2. The method for microseismic monitoring of fractures in mine goaf areas according to claim 1, characterized in that, The method of predicting the crack development location corresponding to the fracture zone through a pre-established microseismic vertical monitoring network includes: The flow direction is monitored using the pre-established microseismic vertical monitoring network to obtain microseismic data; The location of the crack development is determined based on the magnitude of the microseismic data.
3. A device for microseismic monitoring of fractures in goaf areas of mines, characterized in that, include: The test unit is configured to inject a tracer into a designated aquifer and conduct a water pumping test on the goaf during a water pumping test. The water pumping test includes a water release test and a water pumping test. The water pumping test involves pumping water from the goaf to an upper reservoir, and the water release test involves releasing water from the upper reservoir to a lower reservoir. The designated aquifer is the aquifer closest to the goaf. A fracture zone determination unit is configured to determine the presence of a fracture zone if the tracer is found in the water extracted by the pumping test. The flow direction confirmation unit is configured to determine the flow direction from the designated aquifer to the fracture zone through the pumping test; The prediction unit is configured to predict the location of crack development corresponding to the fracture zone through a pre-established microseismic vertical monitoring network. Specifically, the microseismic vertical monitoring network is used to quantitatively monitor the weak zone and capture the development and extension direction and influence range of the fracture zone. The correction and confirmation unit is configured to correct and confirm the location of the fracture development through downhole directional drilling, and to perform grouting repair on the fracture zone after confirming its existence. The correction and confirmation unit includes: The acquisition unit is configured to acquire drilling fluid loss data; The connectivity confirmation unit is configured to determine that the borehole formed by downhole directional drilling is connected to the fracture zone when the drilling fluid loss data is greater than or equal to a preset data; the correction and grouting repair unit is configured to correct and grout the fracture zone by drilling when the drill bit falls out of the drill pipe and into the hole or fracture of the fracture zone.
4. The device for microseismic monitoring of fractures in mine goaf areas according to claim 3, characterized in that, The prediction unit includes: The monitoring module is configured to monitor the flow direction using the pre-established microseismic vertical monitoring network to obtain microseismic data; The crack development location confirmation module is configured to determine the crack development location based on the magnitude of the microseismic data.
5. An electronic device, characterized in that, The electronic device includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method for microseismic monitoring of mine goaf fractures as described in any one of claims 1 to 2.
6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a computer to perform the method for microseismic monitoring of mine goaf fractures as described in any one of claims 1 to 2.