Pressure relief anti-impact method and device, electronic equipment and storage medium

Abstract

The invention provides a pressure relief and scour prevention method and device, electronic equipment and a storage medium, and relates to the technical field of coal mine safety mining, the pressure relief and scour prevention method comprises the steps that the drilling depth of an initial drilling hole is obtained, and the initial drilling hole is used for hydraulic fracturing of a thick and hard roof rock stratum; according to the drilling depth of the initial drilling hole, the reference depth of the exploration hole is determined; on the basis of the reference depth, layer-by-layer advancing of the exploration hole is carried out according to the preset advancing depth, and the water yield is detected during advancing of each layer; according to the water yield, the hydraulic fracturing effect of the thick and hard roof rock stratum is determined, and a target weakening area is determined according to the hydraulic fracturing effect; blast holes are arranged in the target weakening area, and blasting fracturing is carried out based on the blast holes; and secondary expansion and penetration of the artificial fracturing fracture net are promoted, the pressure relief weakening range is enlarged, and the safety of efficient production of a mine is improved.

Description

Technical Field

[0001] The present application relates to the technical field of safe mining of coal mines, and in particular to a pressure relief and anti-bumping method, device, electronic equipment and storage medium. Background Art

[0002] Due to the thickness of the rock layer and the high overall strength, thick hard roof is difficult to be mined and exposed during the working face recovery period. It is easy to form a long cantilever structure, and the working face is the main load-bearing body, which causes the working face to often be in a state of extreme stress equilibrium. When the long cantilever suddenly collapses, it has a severe disturbance effect on the working face, causing instability and impact damage. At present, the weakening technology for thick hard roof is mainly divided into two categories: one is regional hydraulic fracturing, which mainly includes: surface fracturing technology, downhole fracturing technology, etc.; the other is local unloading, which mainly includes: roof pre-splitting blasting, inert gas fracturing, etc.

[0003] Mines often use a single pressure relief method to deal with weakened thick hard roofs. However, due to the fact that ground fracturing technology is restricted by ground space limitations, underground fracturing technology is affected by rock structure, the expansion of the fracture network is restricted, the range of roof pre-cracking blasting weakening is small, and the cost of inert gas fracturing is high, problems such as low universality of pressure relief technology, low degree of roof weakening, small range of pre-cracking weakening, and limited prevention and control effectiveness are prone to occur. Summary of the Invention

[0004] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the first purpose of this application is to propose a pressure relief and anti-impact device to solve the problem that the degree of top plate weakening is not high and the prevention and control efficiency is limited.

[0006] The second purpose of this application is to provide a pressure relief and anti-impact device.

[0007] The third objective of this application is to provide an electronic device.

[0008] The fourth object of this application is to provide a computer-readable storage medium.

[0009] A fifth object of this application is to provide a computer program product.

[0010] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a pressure relief and anti-shock method, comprising:

[0011] Obtaining a drilling depth of an initial borehole for hydraulic fracturing a thick hard roof rock formation;

[0012] Determining a reference depth of the exploration hole according to the drilling depth of the initial drilling hole;

[0013] Based on the reference depth, the exploration hole is advanced layer by layer according to the preset advancement depth, and the water output is detected when advancing each layer;

[0014] determining a hydraulic fracturing effect of the thick hard roof stratum according to the water yield, and determining a target weakening area according to the hydraulic fracturing effect;

[0015] Blasting holes are arranged in the target weakened area, and blasting fracturing is performed based on the blasting holes.

[0016] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a pressure relief and anti-shock device, comprising:

[0017] a first acquisition module for acquiring a drilling depth of an initial borehole used for hydraulic fracturing of a thick hard roof stratum;

[0018] A second acquisition module is used to determine a reference depth of the exploration hole according to the drilling depth of the initial drilling hole;

[0019] A third acquisition module is used to advance the exploration hole layer by layer according to a preset advancement depth based on the reference depth, and detect the water output when advancing each layer;

[0020] a fourth acquisition module, configured to determine a hydraulic fracturing effect of the thick hard roof rock formation according to the water yield, and determine a target weakened area according to the hydraulic fracturing effect;

[0021] The fracturing module is used to arrange blasting holes in the target weakened area and perform blasting fracturing based on the blasting holes.

[0022] To achieve the above-mentioned purpose, a third embodiment of the present application provides an electronic device, comprising: a processor, and a memory communicatively connected to the processor;

[0023] The memory stores computer-executable instructions;

[0024] The processor executes the computer-executable instructions stored in the memory to implement the method described in the embodiment of the first aspect.

[0025] To achieve the above-mentioned purpose, the fourth embodiment of the present application proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the method described in the first embodiment.

[0026] To achieve the above-mentioned purpose, the fifth embodiment of the present application proposes a computer program product, which implements the method described in the first embodiment when the computer program is executed by a processor.

[0027] The pressure relief and anti-blowout method, device, electronic device and storage medium provided in the present application perform hydraulic fracturing through initial drilling to form an artificial fracture network, thereby achieving large-scale regional weakening. After hydraulic fracturing, the reference depth of the exploration hole is determined according to the drilling depth of the initial drilling hole, and the exploration hole is implemented based on the reference depth. The advancement is carried out layer by layer according to the preset advancement depth, and the water output is detected when advancing each layer. The hydraulic fracturing effect is determined according to the water output to determine the target weakening area where the hydraulic fracturing effect is insufficient. Blasting holes are set in the target weakening area for secondary blasting fracturing, which changes the physical and mechanical properties of the thick hard overburden, reduces the integrity and strength of the thick hard roof, promotes the secondary expansion and penetration of the artificial fracture network, increases the pressure relief weakening range, and improves the safety of efficient production in the mine.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0030] Figure 1 A schematic flow chart of a pressure relief and anti-shock method provided in an embodiment of the present application;

[0031] Figure 2 A schematic cross-sectional view of an initial drilling position provided in an embodiment of the present application;

[0032] Figure 3 A schematic cross-sectional view of the position of an exploration hole provided in an embodiment of the present application;

[0033] Figure 4 A schematic cross-sectional view of a blast hole location provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the inclined cross section of the initial drilling and blasting hole positions provided in an embodiment of the present application;

[0035] Figure 6 A schematic structural diagram of a pressure relief and anti-collision device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] The following describes the pressure relief and anti-shock method, device, electronic device, and storage medium of the embodiments of the present application with reference to the accompanying drawings.

[0038] Figure 1 This is a flow chart of a pressure relief and anti-collision method provided in an embodiment of the present application. Figure 1 As shown, the method includes the following steps:

[0039] S101, obtaining a drilling depth of an initial drilling hole, where the initial drilling hole is used for hydraulic fracturing of a thick hard roof rock formation.

[0040] In some embodiments, the hole layout parameters can be determined based on the rock formation column diagram, and the hole layout parameters are used to arrange the initial drilling; the hole layout parameters may include hole layout position, hole layout depth, hole layout direction and target layer position, and the drilling equipment is controlled based on the hole layout parameters to set up the initial drilling, so as to perform preliminary hydraulic fracturing based on the initial drilling, inject high-pressure water into the fracturing borehole, adopt in-hole backward staged fracturing, weaken the thick and hard rock mass, and form an artificial fracture network inside the rock formation through the action of high-pressure water to achieve large-scale regional weakening.

[0041] Optionally, the initial drilling direction in this embodiment can be the working face strike direction and the working face dip direction. When arranging the holes, at least two downhole high-position directional fracturing holes and at least two downhole low-position directional fracturing holes can be arranged to cover as much area as possible. Figure 2 As shown, (1) and (4) are downhole high-position directional fracturing boreholes in this embodiment, and (2) and (3) are downhole low-position directional fracturing boreholes in this embodiment.

[0042] It can be understood that the hole arrangement parameters include the hole arrangement depth, so the drilling depth of the initial drilling can be determined based on the hole arrangement depth within the hole arrangement parameters.

[0043] S102: Determine a reference depth of the exploration hole according to the drilling depth of the initial drilling hole.

[0044] In some embodiments, the one-way theoretical weakening depth of hydraulic fracturing may be obtained, and a margin reference value may be determined based on the one-way theoretical weakening depth. The margin reference value may be greater than or equal to the one-way theoretical weakening depth.

[0045] The unidirectional theoretical weakening depth refers to the theoretical weakening depth for unilateral hydraulic fracturing. For example, if the unidirectional theoretical weakening depth is 3 meters, the depth range on both sides of the vertical fracturing point of a hydraulic fracturing should be about 6 meters.

[0046] In this embodiment, the margin reference value is the position that needs to be carefully explored when implementing the exploration hole. For example, if the drilling depth of the initial drilling hole is 50 meters and the one-way theoretical weakening depth is 3 meters, then the position of 47 meters in the borehole may already be within the weakening range of hydraulic fracturing. Therefore, a detailed exploration is required before this to ensure the accuracy of the exploration results.

[0047] Optionally, in this embodiment, the margin reference value is set to be greater than the one-way theoretical weakening depth. For example, when the one-way theoretical weakening depth is 3 meters, the margin reference value is set to 7 meters. In other embodiments, it can also be 5 meters, 6 meters or 8 meters, without specific limitation.

[0048] Furthermore, the difference between the drilling depth of the initial borehole and the margin reference value is calculated as the reference depth of the exploration hole. For example, when the drilling depth is 50 meters and the margin reference value is 7 meters, the reference depth of the exploration hole is determined to be 43 meters.

[0049] Alternatively, the exploration hole can be a drilled hole implemented into the top plate, such as Figure 3 (5) is the schematic location of the exploration hole, and the depth of the exploration hole is used to understand the water output of the rock formation.

[0050] S103, based on the reference depth, the exploration hole is advanced layer by layer according to the preset advancement depth, and the water output is detected when advancing each layer.

[0051] Optionally, the reference depth can be used as the initial depth of the exploration hole to advance layer by layer, and the advancement depth of each layer is the preset advancement depth; in this embodiment, the preset advancement depth can be 1 meter, that is, before 43 meters, rapid drilling processing can be performed based on the drilling equipment to improve work efficiency. After reaching the reference depth of 43 meters, it is advanced layer by layer according to the preset advancement depth of 1 meter, and the current water output is detected during each layer advancement to evaluate the weakening of hydraulic fracturing.

[0052] In response to the water output at each layer of advancement depth decreasing successively, advancement is stopped when the water output decreases to a preset water output; that is, in the process of advancing the depth layer by layer, the water output changes from a small amount to a large amount, and then gradually decreases from a large amount to a small amount, until the water output reaches the preset water output, and then the advancement of the exploration hole is stopped.

[0053] In response to the water output at each layer of advancement depth being less than or equal to the preset water output, advancement is stopped when the cumulative advancement depth reaches the target depth; that is, in the process of advancing the depth layer by layer, if the water output is less than or equal to the preset water output, it means that the current weakening effect is poor. When the cumulative advancement depth reaches the target depth, for example, if the cumulative advancement depth has reached 60m and the water output is still less than or equal to the preset water output, the exploration hole is stopped at 60m.

[0054] Optionally, the water volume change or water pressure can be monitored in real time based on a flow meter or pressure sensor to obtain the water output of each layer. In other embodiments, water level calibration or other methods can be used to obtain the water output, which will not be described in detail.

[0055] S104: Determine the hydraulic fracturing effect of the thick hard roof rock layer based on the water yield, and determine the target weakening area based on the hydraulic fracturing effect.

[0056] In some embodiments, in response to the water yield being greater than or equal to a water yield threshold, it is determined that the hydraulic fracturing effect at the current location is normal; that is, the actually measured water yield is compared with the water yield threshold under normal hydraulic fracturing. If it is greater than or equal to the water yield threshold, it is determined that the hydraulic fracturing effect at the current location is normal.

[0057] Accordingly, in response to the water yield being less than the water yield threshold, it is determined that the hydraulic fracturing effect at the current position is insufficient.

[0058] Furthermore, the depth interval in which the hydraulic fracturing effect is normal in all exploration holes can be obtained; for example, if the water yield of the exploration hole in the range of 48m to 52m is greater than or equal to the water yield threshold, then the depth interval in which the hydraulic fracturing effect is normal in the exploration hole is [48, 52].

[0059] In this embodiment, the reference depth interval is determined based on the depth interval in which the hydraulic fracturing effect is normal. For example, assuming that the drilling depth of the initial borehole is 50m, three exploration holes are set to detect the fracturing effect. The depth intervals in which the hydraulic fracturing effect of the exploration holes is normal are [48, 52], [46, 53], and [48, 51], respectively. Further, the depth differences of each depth interval can be obtained as 52-48=4, 53-46=7, and 51-48=3, respectively. The average value of all depth differences is calculated as the reference depth difference, that is, the reference depth difference is: (4+7+3) / 3≈4.67. Based on the reference depth difference, the reference depth interval is determined to be [47.67, 52.33]. After rounding down the left interval endpoint and rounding up the right interval endpoint, the reference depth interval is [47, 53].

[0060] The exploration holes with a depth interval less than or equal to the benchmark depth interval are taken as target boreholes, and the target area where the target boreholes are located is the target weakening area. For example, if the target boreholes are [48, 52] and [48, 51], the target area where the target boreholes are located is determined as the target weakening area that requires secondary fracturing weakening.

[0061] S105: Arrange blasting holes in the target weakened area, and perform blasting fracturing based on the blasting holes.

[0062] In some embodiments, for the target weakened area, the working face strike and working face inclination direction can be identified in the roadway; the drilling equipment is controlled to arrange at least two blasting holes along the working face strike and working face inclination direction, such as Figure 4 and Figure 5 As shown, (6) is a blasting hole along the direction of the working face, (7) and (8) are blasting holes arranged along the inclination on the inner side of the working face, and (9) is a blasting hole arranged along the inclination on the outer side of the working face.

[0063] In some embodiments, the blasting task can also be determined according to the location of the blasting hole. The blasting task includes at least a blasting sequence and a blasting interval. The blasting sequence is the order in which different target boreholes are blasted, and the blasting interval refers to the time interval between blasting different target boreholes. The blasting task is sent to the explosive material delivery equipment, and the delivery equipment is controlled to deliver the explosive material based on the blasting task.

[0064] In some embodiments, geological sampling can also be performed on the blasting hole to obtain geological results; the type and amount of blasting material can be determined based on the geological results; and the delivery equipment can be controlled to fill the blasting hole with blasting material according to the type and amount of blasting material.

[0065] In this embodiment, the blasting material type refers to the type of explosive used for blasting, such as emulsion explosives or water gel explosives, and the blasting material amount refers to the amount of explosives used. For example, a larger amount of explosives can be used for hard rock formations, and a smaller amount of explosives can be used for ordinary geological rock formations.

[0066] After determining the type and amount of blasting material, the delivery equipment is controlled to fill the blasting material into the blasting hole; in response to the completion of the blasting material filling, the sealing material is injected to seal the hole, so as to implement the roof blasting, and utilize the effect of the explosive blast wave to further conduct and expand the artificial fracture network, thereby strengthening the degree of weakening of the roof.

[0067] Optionally, the sealing material can be clay foam made by mixing clay and water, or a cement-based material, etc. The specific material can be selected according to the blasting requirements and coal seam conditions, with priority given to materials with better flame retardancy.

[0068] In this embodiment, hydraulic fracturing is performed based on the initial drilling to form an artificial fracture network to achieve large-scale regional weakening. After hydraulic fracturing, the reference depth of the exploration hole is determined according to the drilling depth of the initial drilling hole. The exploration hole is implemented based on the reference depth, and the advancement is carried out layer by layer according to the preset advancement depth. The water output is detected when advancing each layer, and the hydraulic fracturing effect is determined based on the water output to determine the target weakening area where the hydraulic fracturing effect is insufficient. The reference depth interval is determined by comparing multiple exploration holes as a reference, and the depth interval is less than or equal to the reference depth interval. Exploration holes in the depth interval are used as target drilling holes to determine the target weakening area, and blasting holes are set in the target weakening area for secondary blasting and fracturing, which changes the physical and mechanical properties of the thick hard overburden, reduces the integrity and strength of the thick hard roof, promotes the secondary expansion and penetration of the artificial fracture network, increases the decompression weakening range, weakens the impact of the thick hard roof disturbance during the working face mining, enhances the decompression and anti-shock efficiency, reduces the impact risk of the working space, forms a new anti-shock mode of regional decompression + local reinforcement, and improves the safety of efficient production in the mine.

[0069] In order to implement the above embodiment, the present application also proposes a pressure relief and anti-shock device.

[0070] Figure 6 This is a schematic diagram of the structure of a pressure relief and anti-collision device provided in an embodiment of the present application. Figure 6 As shown, the pressure relief and anti-shock device 600 includes:

[0071] A first acquisition module 601 is used to obtain a drilling depth of an initial borehole, where the initial borehole is used for hydraulic fracturing of a thick hard roof rock formation;

[0072] The second acquisition module 602 is used to determine the reference depth of the exploration hole according to the drilling depth of the initial drilling hole;

[0073] The third acquisition module 603 is used to advance the exploration hole layer by layer according to the preset advancement depth based on the reference depth, and detect the water output during each advancement;

[0074] A fourth acquisition module 604 is configured to determine the hydraulic fracturing effect of the thick hard roof stratum according to the water yield, and to determine the target weakened area according to the hydraulic fracturing effect;

[0075] The fracturing module 605 is used to arrange blasting holes in the target weakened area and perform blasting fracturing based on the blasting holes.

[0076] Furthermore, in a possible implementation of the embodiment of the present application, the second obtaining module 602 includes:

[0077] Obtaining a one-way theoretical weakening depth of hydraulic fracturing, and determining a margin reference value based on the one-way theoretical weakening depth, wherein the margin reference value is greater than or equal to the one-way theoretical weakening depth;

[0078] Calculate the difference between the initial drilling depth and the allowance reference value as the reference depth of the exploration hole.

[0079] Furthermore, in a possible implementation of the embodiment of the present application, the apparatus 600 further includes:

[0080] The exploration hole is advanced layer by layer with the reference depth as the initial depth, and the advancement depth of each layer is the preset advancement depth;

[0081] In response to the water output at each advancing depth decreasing in sequence, it is determined that the advancing is stopped when the water output decreases to a preset water output;

[0082] In response to the water output at each advancing depth being less than or equal to a preset water output, advancing is stopped when it is determined that the cumulative advancing depth reaches a target depth.

[0083] Furthermore, in a possible implementation of the embodiment of the present application, the fourth obtaining module 604 includes:

[0084] In response to the water yield being greater than or equal to the water yield threshold, determining that the hydraulic fracturing effect at the current position is normal;

[0085] In response to the water yield being less than the water yield threshold, it is determined that the hydraulic fracturing effect at the current location is insufficient.

[0086] Furthermore, in a possible implementation of the embodiment of the present application, the fourth obtaining module 604 includes:

[0087] Obtain the depth intervals where hydraulic fracturing effects are normal in all exploration holes;

[0088] Determine the benchmark depth range based on the depth range where hydraulic fracturing effects are normal;

[0089] The exploration holes with depth intervals less than or equal to the reference depth interval are taken as target drilling holes, and the target area where the target drilling holes are located is the target weakening area.

[0090] Furthermore, in a possible implementation of the embodiment of the present application, the fracturing module 605 includes:

[0091] For the target weakened area, identify the direction along the working face and the inclination direction of the working face in the roadway;

[0092] The drilling equipment is controlled to arrange at least two blasting holes along the strike direction and the inclination direction of the working face.

[0093] Furthermore, in a possible implementation of the embodiment of the present application, the fracturing module 605 includes:

[0094] Control the delivery equipment to fill the blasting material into the blasting hole;

[0095] In response to the blasting material being filled, a sealing material is injected to perform a sealing process to implement roof blasting.

[0096] Furthermore, in a possible implementation of the embodiment of the present application, the apparatus 600 further includes:

[0097] Conduct geological sampling on blast holes to obtain geological results;

[0098] Determine the type and amount of blasting materials based on geological results;

[0099] Control the delivery equipment to fill the blasting material into the blasting hole according to the type and amount of blasting material.

[0100] Furthermore, in a possible implementation of the embodiment of the present application, the first acquisition module 601 includes:

[0101] Determine the hole layout parameters based on the rock formation histogram, and use the hole layout parameters to arrange the initial drilling holes;

[0102] The drilling depth of the initial drilling is determined according to the hole layout depth within the hole layout parameters.

[0103] It should be noted that the aforementioned explanation of the embodiment of the pressure relief and anti-shock method is also applicable to the pressure relief and anti-shock device of this embodiment, and will not be repeated here.

[0104] In the embodiment of the present application, hydraulic fracturing is performed based on the initial drilling to form an artificial fracture network to achieve large-scale regional weakening. After hydraulic fracturing, the reference depth of the exploration hole is determined according to the drilling depth of the initial drilling hole. The exploration hole is implemented based on the reference depth, and the advancement is carried out layer by layer according to the preset advancement depth. The water output is detected when advancing each layer, and the hydraulic fracturing effect is determined based on the water output to determine the target weakening area where the hydraulic fracturing effect is insufficient. The reference depth interval is determined by comparing multiple exploration holes as a reference, and the depth interval is less than or equal to the reference depth. Exploration holes in the quasi-depth interval are used as target drilling holes to determine the target weakening area, and blasting holes are set in the target weakening area for secondary blasting and fracturing, which changes the physical and mechanical properties of the thick hard overburden, reduces the integrity and strength of the thick hard roof, promotes the secondary expansion and penetration of the artificial fracture network, increases the decompression weakening range, weakens the impact of the thick hard roof disturbance during the working face mining, enhances the decompression and anti-bumping efficiency, reduces the impact risk of the working space, forms a new anti-bumping mode of regional decompression + local reinforcement, and improves the safety of efficient production in the mine.

[0105] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0106] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0107] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0108] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0109] It is important to note that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold beyond these legitimate uses. Furthermore, such collection / sharing should be conducted only after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes the relevant user information before using the feature. Furthermore, any necessary steps must be taken to safeguard and secure access to such personal information and ensure that others with access to personal information comply with its privacy policy and procedures.

[0110] This application contemplates providing implementations that allow users to selectively block the use or access of personal information data. Specifically, this disclosure contemplates providing hardware and / or software to prevent or block access to such personal information data. Risks can be minimized by limiting data collection and deleting data once it is no longer needed. Furthermore, where applicable, such personal information can be de-identified to protect user privacy.

[0111] In the descriptions of the foregoing embodiments, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0112] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0113] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0114] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0115] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0116] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0117] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0118] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A pressure relief and anti-shock method, characterized in that: include: Obtaining a drilling depth of an initial borehole for hydraulic fracturing a thick hard roof rock formation; Determining a reference depth of the exploration hole according to the drilling depth of the initial drilling hole; Based on the reference depth, the exploration hole is advanced layer by layer according to the preset advancement depth, and the water output is detected when advancing each layer; determining a hydraulic fracturing effect of the thick hard roof stratum according to the water yield, and determining a target weakening area according to the hydraulic fracturing effect; Blasting holes are arranged in the target weakened area, and blasting fracturing is performed based on the blasting holes.

2. The method according to claim 1, characterized in that The step of determining the reference depth of the exploration hole according to the drilling depth of the initial drilling hole comprises: Obtaining a one-way theoretical weakening depth of hydraulic fracturing, and determining a margin reference value according to the one-way theoretical weakening depth, wherein the margin reference value is greater than or equal to the one-way theoretical weakening depth; The difference between the drilling depth of the initial drilling hole and the margin reference value is calculated as the reference depth of the exploration hole.

3. The method according to claim 2, characterized in that The method further comprises: Taking the reference depth as the initial depth of the exploration hole, the exploration is carried out layer by layer, with the advancement depth of each layer being the preset advancement depth; In response to the water output at each advancing depth decreasing in sequence, it is determined that the advancing is stopped when the water output decreases to a preset water output; In response to the water output at each advancing depth being less than or equal to a preset water output, advancing is stopped when it is determined that the cumulative advancing depth reaches a target depth.

4. The method according to any one of claims 1 to 3, characterized in that Determining the hydraulic fracturing effect of the thick hard roof rock layer according to the water yield includes: In response to the water yield being greater than or equal to a water yield threshold, determining that a hydraulic fracturing effect at the current position is normal; In response to the water yield being less than a water yield threshold, it is determined that the hydraulic fracturing effect at the current position is insufficient.

5. The method according to claim 4, characterized in that Determining a target weakened area according to the hydraulic fracturing effect includes: Obtaining the depth intervals in all the exploration holes where the hydraulic fracturing effect is normal; Determining a reference depth interval based on the depth interval where the hydraulic fracturing effect is normal; The exploration hole whose depth interval is less than or equal to the reference depth interval is taken as the target drilling hole, and the target area where the target drilling hole is located is the target weakened area.

6. The method according to claim 1, wherein Arranging blast holes in the target weakened area includes: For the target weakened area, identify the direction along the working face and the inclination direction of the working face in the roadway; The drilling equipment is controlled to arrange at least two blasting holes along the strike direction and the inclination direction of the working face.

7. The method according to claim 6, characterized in that Performing blasting fracturing based on the blasting hole includes: Controlling the delivery equipment to fill the blasting material into the blasting hole; In response to the blasting material being filled, a sealing material is injected to perform a sealing process to implement roof blasting.

8. The method according to claim 7, characterized in that The method further comprises: Performing geological sampling on the blasting hole to obtain geological results; Determining the type and amount of blasting material based on the geological results; The delivery device is controlled to fill the blasting material into the blasting hole according to the type and amount of the blasting material.

9. The method according to claim 1, characterized in that The obtaining of the drilling depth of the initial drilling includes: Determining hole arrangement parameters according to the rock formation histogram, wherein the hole arrangement parameters are used to arrange the initial drilling holes; The drilling depth of the initial drilling hole is determined according to the drilling depth within the drilling parameters.

10. A pressure relief and anti-shock device, characterized in that: include: a first acquisition module for acquiring a drilling depth of an initial borehole used for hydraulic fracturing of a thick hard roof stratum; A second acquisition module is used to determine a reference depth of the exploration hole according to the drilling depth of the initial drilling hole; A third acquisition module is used to advance the exploration hole layer by layer according to a preset advancement depth based on the reference depth, and detect the water output when advancing each layer; a fourth acquisition module, configured to determine a hydraulic fracturing effect of the thick hard roof rock formation according to the water yield, and determine a target weakened area according to the hydraulic fracturing effect; The fracturing module is used to arrange blasting holes in the target weakened area and perform blasting fracturing based on the blasting holes.

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