Drilling hole arrangement method and device, storage medium and electronic equipment

Abstract

The invention discloses a drill hole arrangement method and device, a storage medium and electronic equipment, and relates to the technical field of mining. The drill hole arrangement method comprises the steps that firstly, a target rock stratum in a top plate of a to-be-mined coal seam is obtained; then according to the ground stress distribution data and the hydraulic fracture orientation of the target rock stratum, the drilling orientation of the target rock stratum is determined; according to the hydraulic fracture propagation radius of the target rock stratum, the drilling distance of the target rock stratum is determined; in this way, according to the embodiment, the drilling direction can be determined according to the ground stress distribution data of the target rock stratum and the hydraulic fracture direction, the drilling distance of the target rock stratum is determined according to the hydraulic fracture extension radius, and finally the drilling distance of the target rock stratum is determined according to the drilling distance and the drilling direction. According to the method, the drill holes are arranged in the target rock stratum, so that accidents such as water channeling of the adjacent fracturing drill holes are avoided, the three-dimensional fracturing crack net structure is optimized, the fracturing weakening effect on the thick and hard roof rock stratum is improved, and then the safety in the coal seam mining process is improved.

Description

Technical Field

[0001] The present application relates to the field of mining technology, and in particular to a drilling arrangement method, device, storage medium and electronic equipment. Background Art

[0002] The ultra-large mining height fully mechanized mining technology is an important way to achieve efficient mining of thick coal seams. The geological conditions of large mining height and multiple key layers of thick hard roof are common. The difficulty in stability control of thick hard roof seriously restricts the safe and efficient production of ultra-large mining height working faces.

[0003] At present, when arranging drilling holes, relevant technologies usually only consider whether the drilling length can cover the scale of the working face. The drilling arrangement is not coordinated with the crack expansion direction, which is prone to accidents such as fracturing crack penetration and water seepage between boreholes. It fails to fully fracture the thick and hard roof rock layer, affecting the safety of coal mining. Summary of the invention

[0004] In view of this, the present application provides a drilling arrangement method, device, storage medium and electronic device, the main purpose of which is to improve the current related technology. When arranging drilling holes, usually only consider whether the drilling length can cover the working surface scale, the drilling arrangement is not coordinated with the crack expansion direction, and accidents such as fracturing crack penetration and water seepage between boreholes are prone to occur, which affects the technical problem of safety in the coal seam mining process.

[0005] In a first aspect, the present application provides a drilling arrangement method, comprising:

[0006] Acquire a target rock layer in the roof of a coal seam to be mined;

[0007] Determining the drilling orientation of the target rock formation according to the geostress distribution data and hydraulic fracture orientation of the target rock formation;

[0008] Determining the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation;

[0009] Drilling arrangements are performed in the target rock formation according to the drilling spacing and the drilling orientation.

[0010] In a second aspect, the present application provides a drilling arrangement device, comprising:

[0011] An acquisition module configured to acquire a target rock layer in a roof of a coal seam to be mined;

[0012] A determination module configured to determine the drilling orientation of the target rock formation according to the ground stress distribution data and the hydraulic fracture orientation of the target rock formation;

[0013] A determination module, configured to determine the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation;

[0014] The arrangement module is configured to arrange drilling holes in the target rock formation according to the drilling spacing and the drilling orientation.

[0015] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the drilling arrangement method described in the first aspect.

[0016] In a fourth aspect, the present application provides an electronic device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the drilling arrangement method described in the first aspect when executing the computer program.

[0017] By means of the above technical scheme, the present application provides a drilling arrangement method, device, storage medium and electronic device, which first obtains the target rock layer in the roof of the coal seam to be mined; then determines the drilling orientation of the target rock layer according to the geostress distribution data and the hydraulic fracture orientation of the target rock layer; then determines the drilling spacing of the target rock layer according to the hydraulic fracture expansion radius of the target rock layer; finally, arranges drilling in the target rock layer according to the drilling spacing and the drilling orientation. Compared with the prior art, the present embodiment can determine the drilling orientation according to the ground stress distribution data of the target rock formation and the orientation of the hydraulic fracture, determine the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius, and finally arrange the drilling in the target rock formation according to the drilling spacing and the drilling orientation, so as to arrange the drilling according to the three-dimensional fracture orientation under different stress fields, improve the control effect of the hydraulic fracture, and make the finally formed fracturing network play a full role in fracturing the thick hard roof, avoid accidents such as water leakage from adjacent fracturing boreholes, optimize the three-dimensional fracturing network structure, improve the fracturing and weakening effect on the thick hard roof rock formation, and thus improve the safety during coal seam mining.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A schematic diagram of a process flow of a drilling arrangement method provided in an embodiment of the present application is shown;

[0022] Figure 2 A schematic diagram of a process flow of a drilling arrangement method provided in an embodiment of the present application is shown;

[0023] Figure 3 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0024] Figure 4 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0025] Figure 5 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0026] Figure 6 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0027] Figure 7 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0028] Figure 8 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0029] Fig. 9 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0030] Fig.10 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0031] Fig.11 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0032] Fig.12 A schematic structural diagram of a drilling arrangement device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0034] In order to improve the current related technology, when arranging holes, usually only the length of the holes is considered to cover the scale of the working surface, the arrangement of holes is not coordinated with the direction of crack expansion, and accidents such as fracturing crack penetration and water leakage between holes are prone to occur, and the thick hard roof rock layer cannot be fully fractured, which affects the technical problem of safety in the coal seam mining process. This embodiment provides a method for arranging holes, such as Figure 1 As shown, the method includes:

[0035] Step 101: Acquire a target rock layer in the roof of a coal seam to be mined.

[0036] Among them, the target rock layer is used for drilling arrangement. In specific application scenarios, the advanced hydraulic fracturing of the thick hard roof on the ultra-large mining height working face is an effective method to treat strong mine pressure disasters. The underground directional drilling rig of the coal mine can be used to arrange drilling in the target rock layer (such as the thick hard rock layer of the ultra-large mining height roof), and drill groups of different directions and lengths are set to ensure that the multi-layer three-dimensional thick hard rock layer is fully fractured and weakened.

[0037] Step 102: Determine the drilling orientation of the target rock formation according to the geostress distribution data and hydraulic fracture orientation of the target rock formation.

[0038] In specific application scenarios, when conducting advance hydraulic fracturing on a thick hard roof on a super-large mining height working face, the orientation of the hydraulic fractures (such as the orientation of hydraulic fracture extension and the orientation of hydraulic fracture distribution) is mainly restricted by the geostress field. The geostress fields of roofs at different burial depths are significantly different, resulting in diversified crack extension orientations (such as vertical fractures and horizontal fractures).

[0039] For this embodiment, the geostress distribution data and hydraulic fracture orientation of the target rock formation can be obtained first, and then the drilling orientation of the target rock formation can be determined based on the geostress distribution data and the hydraulic fracture orientation, so as to realize the quantitative design of the drilling orientation to ensure the effective expansion of the hydraulic fracture, thereby performing differentiated drilling arrangements according to the three-dimensional fracture distribution under different stress fields, improving the control effect of the hydraulic fracture, and making the finally formed fracturing network fully play the role of fracturing the thick hard roof, avoiding accidents such as water leakage from adjacent fracturing boreholes, and improving the fracturing and weakening effect of the thick hard roof rock formation.

[0040] For example, the magnitude and direction of the geostress of the target rock formation can be obtained through field measurements (such as sonic logging, hydraulic fracturing, stress relief, etc.), and by referring to geological reports and existing research results, the geostress characteristics of the target rock formation can be understood and the geostress distribution data can be determined.

[0041] Step 103: Determine the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation.

[0042] In specific application scenarios, when determining the borehole spacing of the target rock formation, the expansion radius of the hydraulic fracture needs to be considered to ensure that the fractures between the individual boreholes do not interfere with each other while maximizing the fracture coverage. For example, based on the principles of rock mechanics and fluid mechanics, analytical models or numerical simulation software (such as finite element analysis software) can be used to calculate the expansion radius of the hydraulic fractures of the target rock formation, achieve quantitative design of the borehole spacing, and then optimize the three-dimensional fracture network structure, effectively eliminating accidents such as water leakage from adjacent fracturing boreholes.

[0043] Step 104: Arrange drilling holes in the target rock formation according to the drilling spacing and drilling orientation.

[0044] In specific application scenarios, after determining the target rock layer for fracturing drilling arrangement, the coal mine underground directional drilling rig can be used to drill a group of holes with corresponding drilling orientations in the target rock layer according to the drilling hole spacing to achieve drilling arrangement, thereby improving the fracturing and weakening effect on the three-dimensional thick and hard roof, effectively preventing and controlling strong mine pressure disasters in ultra-large mining height working faces, and improving safety during coal seam mining.

[0045] By applying the method of this embodiment, the target rock layer in the roof of the coal seam to be mined can be first obtained; then the drilling orientation of the target rock layer can be determined according to the geostress distribution data and hydraulic fracture orientation of the target rock layer; then the drilling spacing of the target rock layer can be determined according to the hydraulic fracture expansion radius of the target rock layer; finally, the drilling arrangement is performed in the target rock layer according to the drilling spacing and drilling orientation. Compared with the prior art, this embodiment can determine the drilling orientation according to the geostress distribution data and hydraulic fracture orientation of the target rock layer, determine the drilling spacing of the target rock layer according to the hydraulic fracture expansion radius, and finally, arrange the drilling in the target rock layer according to the drilling spacing and drilling orientation, so as to arrange the drilling according to the three-dimensional fracture orientation under different stress fields, improve the control effect of the hydraulic fracture, so that the finally formed hydraulic fracture network can fully play the role of fracturing the thick hard roof, avoid accidents such as water leakage from adjacent hydraulic fracture boreholes, optimize the three-dimensional hydraulic fracture network structure, improve the fracturing and weakening effect on the thick hard roof rock layer, and thus improve the safety during coal seam mining.

[0046] In order to further illustrate the specific implementation process of the method of this embodiment, this embodiment provides the following Figure 2 The specific method shown includes:

[0047] Step 201: Conduct drilling crack observation and rock mass strength in-situ testing on the roof to obtain rock formation data of the roof.

[0048] In this embodiment, a coring borehole for the roof can be drilled in the working face tunnel, and the coring borehole height can be set to 8 times the mining height (such as 8H). A core column chart is compiled, and an underground coal mine geomechanics in-situ testing system is used to conduct borehole crack observation and rock strength in-situ testing on the roof to obtain rock formation data of the roof.

[0049] Among them, rock formation data may include but are not limited to physical property data (such as density, porosity, permeability, etc.), mechanical property data (such as compressive strength, tensile strength, shear strength, etc.), structural surface property data (such as crack density, crack direction, crack aperture, crack filling, etc.), geometric property data (such as thickness, width, length), etc., to provide basic data for identifying thick, hard and complete rock formations, which is helpful for roof stability analysis.

[0050] For example, the roof drilling crack peeking result is as follows: Figure 3 As shown, the morphology and characteristics of the cracks are shown, and the results of the in-situ test of rock mass strength are shown in Figure 4 As shown, the change of coal rock strength with drilling depth is shown.

[0051] Step 202: Determine the target rock formation based on the rock formation data and a preset rock formation characteristic threshold.

[0052] As a possible implementation method, the target rock layer for drilling arrangement can be determined based on underground geomechanical tests in coal mines. Specifically, a preset rock layer characteristic threshold (such as a preset thickness threshold and a preset uniaxial compressive strength threshold) can be obtained first, and then the rock layer data can be compared with the preset rock layer characteristic threshold to screen multiple rock layers in the roof, and finally the rock layer that meets the preset rock layer characteristic threshold is determined as the target rock layer.

[0053] For example, the preset thickness threshold can be set to 10m, and the preset uniaxial compressive strength threshold can be set to 60MPa. By comparing with the rock formation data, thick and hard rock formations with a thickness greater than 10m, a uniaxial compressive strength greater than 60MPa, and no developed fractures can be used as the target rock formations (target positions, target layers) for the main drilling arrangement.

[0054] Step 203: Determine the minimum principal stress of the target rock formation based on the geostress distribution data of the target rock formation.

[0055] Among them, the geostress distribution data may include: maximum principal stress: usually along the direction of maximum geostress; intermediate principal stress: between maximum and minimum principal stress; minimum principal stress: usually along the direction of minimum geostress. In specific application scenarios, hydraulic fracturing usually extends along the direction of maximum principal stress or perpendicular to minimum principal stress. The minimum principal stress of the target rock formation can be used to determine the fracture orientation, thereby optimizing the drilling orientation.

[0056] For example, Figure 5As shown, the small-aperture hydraulic fracturing method can be used to measure the geostress of the roof rock formation. The hydraulic fracturing geostress measuring instrument collects the fracturing pressure and time in real time to obtain the hydraulic fracturing curve of each measuring point, which shows the rise and fall of the pressure (the pressure of channel 1) over time as the hydraulic fracturing process progresses, reflecting the response of the rock when subjected to hydraulic fracturing and the effect of geostress; the fracture direction of 33.5° north-east in the figure can be used to indicate the direction of the cracks formed during the hydraulic fracturing process.

[0057] Correspondingly, the fracture pressure, reopening pressure and instantaneous closing pressure can be obtained based on the hydraulic fracturing curve analysis, and the magnitude and orientation of three-dimensional geostress, such as the maximum horizontal principal stress, the minimum horizontal principal stress and the vertical stress, can be calculated to obtain the geostress distribution data.

[0058] Step 204: Determine the drilling orientation corresponding to the target rock formation according to the minimum principal stress and the hydraulic fracture orientation.

[0059] For example, Figure 6 The figure shows a hydraulic fracturing scenario. During the hydraulic fracturing process, high-pressure fluid is injected into the directional borehole, causing the rock to break and form new fractures. Directional drilling can be used to create a channel in the formation until it reaches the target rock formation. When the horizontal stress σ is determined 3 is the minimum principal stress and the hydraulic fracture is a vertical fracture, the drilling orientation of the directional drilling can be determined as horizontal drilling, and it can be converted to horizontal drilling in the target rock layer after entering the target rock layer; in the figure, σ 1 Can represent the vertical stress, σ 2 It can represent the maximum horizontal principal stress.

[0060] In this way, the drilling orientation can be designed based on the three-dimensional crack orientation, the coordination relationship between the drilling hole and the three-dimensional crack can be taken into consideration, the three-dimensional fracture network structure can be optimized, and accidents such as water leakage from adjacent fracturing drilling holes can be effectively eliminated, and the fracture group can be prevented from being confined to one horizontal plane. It can ensure that multiple layers of thick hard rock layers are fully fractured and weakened, and improve the fracturing prevention and control effect of ultra-large-scale high-intensity mining pressure disasters.

[0061] Optionally, before step 204, the method of this embodiment may further specifically include: performing a true triaxial hydraulic fracturing test on the target rock formation to obtain the hydraulic fracture orientation of the target rock formation.

[0062] For example, a true triaxial hydraulic fracturing test of roof rock can be carried out, using a true triaxial geotechnical engineering model testing machine to simulate three-dimensional ground stress, a servo pump pressure system to control displacement, and computed tomography (CT) scanning of rock samples before and after fracturing to determine the distribution orientation of hydraulic fractures.

[0063] For example, Figure 7As shown, the test scene of the rock true triaxial hydraulic fracturing system is shown. The rock true triaxial hydraulic fracturing system may include rock samples, fracturing holes, loading plates, hydraulic servo fracturing systems, true triaxial servo loading systems, etc. Among them, the hydraulic servo fracturing system may include components such as microcomputers, pump pressure system control, hydraulic source servo valves, boosters, high-pressure water chambers, water containers, and high-pressure valves. The true triaxial servo loading system may include large true triaxial loading servo boosters, true triaxial loading system controllers, large true triaxial loading system hydraulic sources, microcomputers, etc. Specifically, the microcomputer may control the hydraulic source, high-pressure valves, and boosters according to preset programs and parameters, so that the hydraulic fracturing fluid can enter the rock sample at a specific pressure and flow rate. The loading plate may apply triaxial geostress to the rock sample to simulate the real underground environment. Through the precise control of the microcomputer, the fine management of the hydraulic fracturing process is achieved to ensure the best fracturing effect.

[0064] Accordingly, CT scanning equipment can be used to scan the rock sample after fracturing to obtain the internal structure image of the rock sample. The CT scanning results before and after fracturing can be compared to evaluate the distribution direction and shape of hydraulic fractures. The CT scanning results of the fracturing rock sample are as follows: Figure 8 shown.

[0065] Optionally, after step 204, the method of this embodiment may further specifically include: generating a drilling trajectory within the working surface of the target rock formation according to the drilling orientation; and determining a drilling length corresponding to the drilling trajectory according to the length of the working surface.

[0066] For example, Fig. 9 As shown, if the horizontal stress σ 3 is the minimum principal stress, and the hydraulic fracture is a vertical fracture. After the directional drilling enters the target layer, it turns to horizontal drilling in the layer. The trajectory of the horizontal section of the borehole is drilled along the minimum principal stress. The length of the horizontal section of the borehole can be determined according to the distance to the boundary of the working face, such as the distance to the boundary of the working face, or determined by a preset length (such as 500-1000m). In the figure, σ 1 Can represent the vertical stress, σ 2 It can represent the maximum horizontal principal stress.

[0067] For example, Fig.10 As shown, if the vertical stress σ 3 If the minimum principal stress is the minimum principal stress and the hydraulic fracture is a horizontal fracture, then the drilling sites can be arranged in the tunnels on both sides of the working face, and high-angle inclined through-layer boreholes can be directional drilled. The starting point of the borehole is the direct top of the tunnel, and the end point of the borehole is the upper end of the highest layout layer. The horizontal projection length of the borehole trajectory in the coal seam is equal to the length of the working face and is parallel to the length direction of the working face. In the figure, σ 1 , σ 2 They can represent the maximum and minimum horizontal principal stresses respectively.

[0068] Step 205: Determine the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation.

[0069] In this embodiment, the drilling spacing of the target rock formation is determined based on the hydraulic fracture expansion radius, which helps to effectively expand the fractures and maximize the utilization of resources. For example, the actual hydraulic fracture expansion radius can be obtained through laboratory tests or field tests.

[0070] Optionally, step 205 may specifically include: using the hydraulic fracture expansion radius to determine the minimum drilling spacing of the target rock formation.

[0071] For example, the minimum borehole spacing of the target rock formation can be set to 2 times the hydraulic fracture expansion radius, that is, the borehole spacing can be set to be no less than 2 times the hydraulic fracture expansion radius (≥2R). For example, if the hydraulic fracture expands in a circular shape and the hydraulic fracture expansion radius is R, then the borehole spacing S between two adjacent boreholes can be calculated using the following formula: S≥2R. In this way, it can be ensured that there is no overlap between two adjacent fractures, thereby improving the safety of the drilling process.

[0072] In specific application scenarios, the heterogeneity and anisotropy of the rock formations can be taken into consideration, and the drilling spacing can be adjusted to adapt to different geological conditions. For areas with complex geological conditions or obvious fracture tendencies, the drilling spacing can be appropriately reduced to improve the connectivity of the fracture network and the efficiency of resource extraction, optimize project costs, and reduce environmental impact.

[0073] Optionally, before determining the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation, the method of this embodiment may further specifically include: collecting core samples of the top plate and determining lithological parameters of the core samples; and calculating the hydraulic fracture expansion radius based on the lithological parameters.

[0074] In specific application scenarios, the top plate coring can be processed into core samples. For example, the selected rock samples are processed into standard rock samples according to standard sizes to ensure that the shape and size of the rock samples meet the test requirements. The lithology parameters of the top plate rock formation are then measured in the laboratory. The lithology parameters may include but are not limited to elastic modulus E, fracture toughness K IC , Poisson's ratio ν, etc., and then select the fracturing displacement Q and fracturing time t, and use the penny fracture model (such as Fig.11 The hydraulic fracture extension radius R is calculated by the following formula:

[0075]

[0076] Step 206: Arrange drilling holes in the target rock formation according to the drilling spacing and drilling orientation.

[0077] For example, based on the method of arranging drilling holes for fracturing and decompression of ultra-large mining high-thick hard roof, the drilling group can be arranged according to the drilling hole spacing, and the position of each drilling hole can be determined to ensure that the fracturing cracks can fully fracture the rock formation between the drilling holes without overlapping water leakage, thereby improving the safety of the fracturing process. For example, if the drilling hole spacing is 18 meters, a drilling hole can be arranged every 18 meters in the rock formation.

[0078] Specifically, each borehole can be numbered, and the orientation of each borehole can be marked, and its coordinate position and depth can be recorded. Clear and accurate borehole numbering and location information will help with subsequent construction and management. During the drilling process, the formation changes and drilling parameters can be monitored regularly, abnormal conditions during the drilling process can be recorded, and timely response measures can be taken. The geological models and fracture extension data before and after drilling can also be compared to evaluate the effect of the drilling arrangement. Based on the evaluation results, the borehole spacing and orientation can be optimized to improve the engineering effect.

[0079] As a possible implementation method, the target layer of the drilling layout can be determined based on the rock formation data, the crack distribution orientation and the directional drilling layout orientation can be determined according to the ground stress distribution data, and the parameters such as the drilling spacing can be determined according to the crack expansion scale. The three-dimensional crack orientation and expansion scale are used as key parameters to design the drilling orientation and spacing, thereby realizing the quantitative design of the drilling orientation and spacing and improving the scientific nature of the underground directional drilling layout design.

[0080] Compared with the current existing technology, this embodiment can determine the drilling orientation corresponding to the target rock layer according to the minimum principal stress and the hydraulic fracture orientation, and determine the drilling spacing of the target rock layer according to the hydraulic fracture expansion radius of the target rock layer. It takes into account the coordination relationship between the drilling hole and the three-dimensional cracks, optimizes the three-dimensional fracture network structure, effectively eliminates accidents such as water leakage from adjacent fracturing drilling holes, and avoids the fracture group being confined to one horizontal plane. It can ensure that multiple layers of thick and hard rock layers are fully fractured and weakened, and improve the fracturing prevention and control effect of ultra-large-scale high-intensity mining pressure disasters.

[0081] Further, as Figure 1 and Figure 2 The specific implementation of the method shown in the embodiment provides a drilling arrangement device, such as Fig.12 As shown, the device includes: an acquisition module 31, a determination module 32, and a placement module 33.

[0082] An acquisition module 31 is configured to acquire a target rock layer in the roof of the coal seam to be mined;

[0083] A determination module 32 is configured to determine the drilling orientation of the target rock formation according to the ground stress distribution data of the target rock formation and the hydraulic fracture orientation;

[0084] A determination module 32, configured to determine the drilling spacing of the target rock formation according to the hydraulic fracture extension radius of the target rock formation;

[0085] The arrangement module 33 is configured to arrange drilling holes in the target rock formation according to the drilling hole spacing and drilling direction.

[0086] In some examples of this embodiment, the determination module 32 is specifically configured to determine the minimum principal stress of the target rock formation based on the geostress distribution data of the target rock formation; and determine the drilling orientation corresponding to the target rock formation based on the minimum principal stress and the hydraulic fracture orientation.

[0087] In some examples of this embodiment, the determination module 32 is further specifically configured to generate a drilling trajectory within the working surface of the target rock formation according to the drilling orientation; and determine the drilling length corresponding to the drilling trajectory according to the length of the working surface.

[0088] In some examples of this embodiment, the determination module 32 is further configured to perform a true triaxial hydraulic fracturing test on the target rock formation to obtain the hydraulic fracture orientation of the target rock formation.

[0089] In some examples of this embodiment, the determination module 32 is specifically configured to determine the minimum drilling spacing of the target rock formation using the hydraulic fracture extension radius.

[0090] In some examples of this embodiment, the determination module 32 is further configured to collect core samples of the top plate, determine lithological parameters of the core samples, and calculate the hydraulic fracture extension radius based on the lithological parameters.

[0091] In some examples of this embodiment, the acquisition module 31 is specifically configured to perform drilling crack observation and in-situ rock strength testing on the roof to obtain rock formation data of the roof; and determine the target rock formation based on the rock formation data and preset rock formation characteristic thresholds.

[0092] It should be noted that for other corresponding descriptions of the functional units involved in the drilling arrangement device provided in this embodiment, reference can be made to Figure 1 and Figure 2 The corresponding description in will not be repeated here.

[0093] Based on the above Figure 1 and Figure 2 The method shown in the embodiment also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned Figure 1 and Figure 2 The method shown.

[0094] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the method of the implementation scenario of the present application.

[0095] Based on the above Figure 1 and Figure 2 The method shown, and Fig.12 In order to achieve the above-mentioned purpose, the embodiment of the present application also provides an electronic device, such as a personal computer, a server, which includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 1 and Figure 2 The method shown.

[0096] Optionally, the above-mentioned physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0097] Those skilled in the art will appreciate that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0098] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the above-mentioned physical device, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0099] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or by hardware. By applying the technical solution of this embodiment, this embodiment can determine the borehole orientation corresponding to the target rock formation according to the minimum principal stress and the hydraulic fracture orientation, and determine the borehole spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation, taking into account the coordination relationship between the borehole and the three-dimensional fracture, optimizing the three-dimensional seam network structure, effectively eliminating accidents such as water leakage from adjacent fracturing boreholes, and avoiding the fracture group being confined to one horizontal plane, which can ensure that multiple layers of thick and hard rock formations are fully fractured and weakened, and improve the fracturing prevention and control effect of ultra-large mining high-intensity mining disasters.

[0100] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0101] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A drilling arrangement method, characterized in that: include: Acquire a target rock layer in the roof of a coal seam to be mined; Determining the drilling orientation of the target rock formation according to the geostress distribution data and hydraulic fracture orientation of the target rock formation; Determining the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation; Drilling arrangements are performed in the target rock formation according to the drilling spacing and the drilling orientation.

2. The method according to claim 1, characterized in that Determining the drilling orientation of the target rock formation according to the geostress distribution data and hydraulic fracture orientation of the target rock formation includes: Determining the minimum principal stress of the target rock formation according to the geostress distribution data of the target rock formation; The drilling orientation corresponding to the target rock formation is determined according to the minimum principal stress and the hydraulic fracture orientation.

3. The method according to claim 2, characterized in that After determining the drilling position corresponding to the target rock formation according to the minimum principal stress and the hydraulic fracture position, the method further includes: Generating a drilling trajectory within the working surface of the target rock formation according to the drilling orientation; The drilling length corresponding to the drilling trajectory is determined according to the length of the working surface.

4. The method according to claim 2, characterized in that: Before determining the drilling position corresponding to the target rock formation according to the minimum principal stress and the hydraulic fracture position, the method further includes: A true triaxial hydraulic fracturing test is carried out on the target rock formation to obtain the hydraulic fracture orientation of the target rock formation.

5. The method according to claim 1, characterized in that Determining the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation includes: The minimum drilling spacing of the target rock formation is determined using the hydraulic fracture expansion radius.

6. The method according to claim 5, characterized in that Before determining the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation, the method further includes: Collecting core samples of the top plate and measuring lithological parameters of the core samples; Based on the lithology parameters, the hydraulic fracture extension radius is calculated.

7. The method according to claim 1, characterized in that The step of obtaining the target rock layer in the roof of the coal seam to be mined comprises: Conducting drilling crack observation and rock mass strength in-situ testing on the roof to obtain rock formation data of the roof; The target rock formation is determined based on the rock formation data and a preset rock formation characteristic threshold.

8. A drilling arrangement device, characterized in that: include: An acquisition module configured to acquire a target rock layer in a roof of a coal seam to be mined; A determination module configured to determine the drilling orientation of the target rock formation according to the ground stress distribution data and the hydraulic fracture orientation of the target rock formation; A determination module, configured to determine the drilling spacing of the target rock formation according to the hydraulic fracture expansion radius of the target rock formation; The arrangement module is configured to arrange drilling holes in the target rock formation according to the drilling spacing and the drilling orientation.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An electronic device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

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