Drilling arrangement method, device, storage medium and electronic equipment

Abstract

The application discloses a drilling arrangement method and device, a storage medium and an electronic device, relates to the technical field of mining, and comprises the following steps: first, obtaining a target rock layer in the roof of a coal seam to be mined; then, determining the drilling direction of the target rock layer according to the ground stress distribution data and the hydraulic fracture azimuth of the target rock layer; then, determining the drilling interval of the target rock layer according to the hydraulic fracture extension radius of the target rock layer; finally, drilling is arranged in the target rock layer according to the drilling interval and the drilling direction. In this way, the drilling direction can be determined according to the ground stress distribution data and the hydraulic fracture azimuth of the target rock layer, the drilling interval of the target rock layer can be determined according to the hydraulic fracture extension radius, drilling is arranged in the target rock layer according to the drilling interval and the drilling direction, so that the safety in the process of coal seam mining is improved by avoiding accidents such as water channeling of adjacent fracturing drilling, optimizing the three-dimensional fracturing fracture network structure and improving the fracturing weakening effect on thick and hard roof rock layers.

Description

Technical Field

[0001] This application relates to the field of mining technology, and in particular to a drilling arrangement method, apparatus, storage medium and electronic equipment. Background Technology

[0002] Ultra-high fully mechanized mining technology is an important way to achieve efficient mining of thick coal seams. However, the geological conditions of high-high mining often involve multiple key layers with thick and hard roofs. The problem of controlling the stability of thick and hard roofs seriously restricts the safe and efficient production of ultra-high mining faces.

[0003] Currently, when arranging boreholes, related technologies typically only consider whether the borehole length can cover the working face. The borehole arrangement is not coordinated with the direction of fracture expansion, which can easily lead to accidents such as the connection of hydraulic fracturing fractures and water flow between boreholes. This fails to fully fracture the thick and hard roof strata, affecting the safety of coal seam mining. Summary of the Invention

[0004] In view of this, this application provides a borehole layout method, apparatus, storage medium and electronic equipment. The main purpose is to improve the technical problems of current related technologies, which usually only consider whether the borehole length can cover the working face scale when laying boreholes. The borehole layout is not coordinated with the fracture propagation direction, which can easily lead to accidents such as hydraulic fracture penetration and water flow between boreholes, affecting the safety of coal seam mining.

[0005] In a first aspect, this application provides a drilling arrangement method, including:

[0006] Obtain the target rock strata in the roof of the coal seam to be mined;

[0007] Based on the geostress distribution data and hydraulic fracture location of the target rock stratum, the borehole location of the target rock stratum is determined;

[0008] The borehole spacing of the target rock stratum is determined based on the hydraulic fracture propagation radius of the target rock stratum.

[0009] Drill holes are arranged in the target rock stratum according to the stated drill hole spacing and the stated drill hole orientation.

[0010] Secondly, this application provides a drilling arrangement device, comprising:

[0011] The acquisition module is configured to acquire the target rock strata in the roof of the coal seam to be mined;

[0012] The determination module is configured to determine the borehole orientation of the target rock stratum based on the geostress distribution data and hydraulic fracture orientation of the target rock stratum.

[0013] The determination module is configured to determine the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius of the target rock stratum.

[0014] The arrangement module is configured to arrange boreholes in the target rock stratum according to the borehole spacing and the borehole orientation.

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

[0016] Fourthly, this application provides an electronic device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor executes the computer program to implement the drilling arrangement method described in the first aspect.

[0017] Using the above technical solution, this application provides a drilling layout method, apparatus, storage medium, and electronic device. First, the target rock strata in the roof of the coal seam to be mined are obtained; then, the drilling orientation of the target rock strata is determined based on the geostress distribution data and hydraulic fracture orientation of the target rock strata; next, the drilling spacing of the target rock strata is determined based on the hydraulic fracture propagation radius of the target rock strata; finally, drilling is arranged in the target rock strata according to the drilling spacing and the drilling orientation. Compared with existing technologies, this embodiment can determine the borehole orientation based on the geostress distribution data and hydraulic fracture orientation of the target rock stratum, determine the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius, and finally arrange the boreholes in the target rock stratum according to the borehole spacing and the borehole orientation. This allows for borehole arrangement based on the three-dimensional fracture orientation under different stress fields, improving the control effect on hydraulic fractures. This enables the final fracturing network to fully play its role in fracturing the thick and hard roof, avoiding accidents such as water leakage between adjacent fracturing boreholes. The three-dimensional fracturing network structure is optimized, improving the fracturing and weakening effect on the thick and hard roof strata, thereby improving the safety during coal seam mining.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application 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 application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

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

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic flowchart of a drilling arrangement method provided in an embodiment of this application is shown;

[0022] Figure 2 A schematic flowchart of a drilling arrangement method provided in an embodiment of this application is shown;

[0023] Figure 3 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0024] Figure 4 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0025] Figure 5 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0026] Figure 6 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0027] Figure 7 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0028] Figure 8 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0029] Figure 9 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0030] Figure 10 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0031] Figure 11 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0032] Figure 12 A schematic diagram of a drilling arrangement device provided in an embodiment of this application is shown. Detailed Implementation

[0033] The embodiments of this application will now be described in more detail with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0034] To address the current technical issues in borehole layout, which typically only considers whether the borehole length can cover the working face, resulting in a mismatch between the borehole layout and fracture propagation direction, and easily leading to accidents such as fracture penetration and water seepage between boreholes, this embodiment provides a borehole layout method, such as... Figure 1 As shown, the method includes:

[0035] Step 101: Obtain the target rock strata in the roof of the coal seam to be mined.

[0036] The target rock strata are used for borehole layout. In specific application scenarios, advanced hydraulic fracturing of the thick hard roof on ultra-high mining faces is an effective method for controlling strong mine pressure disasters. Coal mine directional drilling rigs can be used to lay boreholes in the target rock strata (such as thick hard rock strata on ultra-high mining faces), and drill a group of boreholes with different orientations and lengths to ensure that the multi-layered three-dimensional thick hard rock strata are fully fractured and weakened.

[0037] Step 102: Determine the borehole orientation of the target rock stratum based on the geostress distribution data and hydraulic fracture location.

[0038] In specific application scenarios, when performing advanced hydraulic fracturing on thick hard roofs at ultra-high mining faces, the orientation of hydraulic fractures (such as the orientation of hydraulic fracture propagation and the orientation of hydraulic fracture distribution) is mainly constrained by the geostress field. The geostress field of the roof at different burial depths varies significantly, resulting in a variety of fracture propagation orientations (such as vertical fractures and horizontal fractures).

[0039] In this embodiment, the geostress distribution data and hydraulic fracture orientation of the target rock stratum can be obtained first. Then, based on the geostress distribution data and hydraulic fracture orientation, the borehole orientation of the target rock stratum can be determined, realizing the quantitative design of the borehole orientation to ensure the effective propagation of hydraulic fractures. Thus, the borehole layout can be differentiated according to the three-dimensional fracture distribution under different stress fields, improving the control effect of hydraulic fractures. This allows the final formed hydraulic fracture network to fully play its role in fracturing the thick and hard top plate, avoiding accidents such as water leakage from adjacent hydraulic fracture boreholes, and improving the fracturing and weakening effect on the thick and hard top plate rock stratum.

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

[0041] Step 103: Determine the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius of the target rock stratum.

[0042] In specific application scenarios, when determining the borehole spacing of the target rock stratum, it is necessary to consider the propagation radius of hydraulic fractures to ensure that fractures between boreholes do not interfere with each other, while maximizing the fracture coverage area. 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 propagation radius of hydraulic fractures in the target rock stratum, enabling quantitative design of borehole spacing. This, in turn, optimizes the three-dimensional fracture network structure and effectively eliminates accidents such as water leakage between adjacent fracturing boreholes.

[0043] Step 104: Arrange boreholes in the target rock stratum according to the borehole spacing and borehole orientation.

[0044] In specific application scenarios, after determining the target rock stratum for fracturing borehole layout, a group of boreholes with corresponding borehole orientations can be drilled in the target rock stratum according to the borehole spacing to realize the borehole layout, improve the fracturing and weakening effect on the three-dimensional thick and hard roof, effectively prevent strong mine pressure disasters in ultra-high mining faces, and improve the safety in the coal seam mining process.

[0045] By applying the method of this embodiment, the target rock strata in the roof of the coal seam to be mined can first be obtained; then, based on the geostress distribution data and hydraulic fracture orientation of the target rock strata, the borehole orientation of the target rock strata is determined; next, the borehole spacing of the target rock strata is determined based on the hydraulic fracture propagation radius; finally, boreholes are arranged in the target rock strata according to the borehole spacing and orientation. Compared with the prior art, this embodiment can determine the borehole orientation based on the geostress distribution data and hydraulic fracture orientation of the target rock strata, determine the borehole spacing based on the hydraulic fracture propagation radius, and finally arrange the boreholes in the target rock strata according to the borehole spacing and orientation. This allows for borehole arrangement based on the three-dimensional fracture orientation under different stress fields, improving the control effect on hydraulic fractures. This ensures that the final fracturing network fully functions to fracture the thick, hard roof, avoiding accidents such as water leakage from adjacent fracturing boreholes. It optimizes the three-dimensional fracturing network structure, improves the fracturing and weakening effect on the thick, hard roof strata, and thus improves the safety during coal seam mining.

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

[0047] Step 201: Conduct borehole fracture inspection and in-situ rock strength testing on the roof to obtain rock strata data of the roof.

[0048] In this embodiment, a core drilling hole can be drilled in the working face roadway. The core drilling hole height can be set to 8 times the mining height (e.g., 8H). A core columnar section is prepared, and an underground coal mine geomechanical in-situ testing system is used to conduct borehole fracture inspection and in-situ rock mass strength testing on the roof to obtain the roof strata data.

[0049] The rock strata data may include, but is 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 fracture density, fracture direction, fracture aperture, fracture filling material, etc.), and geometric property data (such as thickness, width, length), etc., which provide basic data for identifying thick, hard, and intact rock strata and help in roof stability analysis.

[0050] For example, the inspection results of borehole fractures in the top plate are as follows: Figure 3 As shown, the morphology and characteristics of the fractures are illustrated, and the in-situ rock mass strength test results are as follows: Figure 4 As shown, the strength of the coal and rock mass varies with borehole depth.

[0051] Step 202: Determine the target rock layer based on rock layer data and preset rock layer characteristic thresholds.

[0052] As one possible implementation method, the target rock strata for borehole placement can be determined based on underground geomechanical testing in coal mines. Specifically, firstly, preset rock strata characteristic thresholds (such as preset thickness thresholds and preset uniaxial compressive strength thresholds) can be obtained. Then, the rock strata data can be compared with the preset rock strata characteristic thresholds to screen multiple rock strata in the roof. Finally, the rock strata that meet the preset rock strata characteristic thresholds are determined as the target rock strata.

[0053] For example, the preset thickness threshold can be set to 10m and the preset uniaxial compressive strength threshold can be 60MPa. By comparing with rock strata data, thick and hard rock strata with a thickness greater than 10m, a uniaxial compressive strength greater than 60MPa, and no developed fractures can be used as the target rock strata (target layer, target stratum) for the main borehole layout.

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

[0055] The geostress distribution data can include: maximum principal stress (usually along the direction of maximum geostress), intermediate principal stress (between the maximum and minimum principal stresses), and minimum principal stress (usually along the direction of minimum geostress). In specific applications, hydraulic fracturing typically extends along the direction of maximum principal stress or perpendicular to the direction of minimum principal stress. The minimum principal stress of the target rock strata can be used to determine the fracture orientation, thereby optimizing the borehole orientation.

[0056] For example, such as Figure 5As shown, the small-aperture hydraulic fracturing method can be used to measure the in-situ stress of the top strata. The hydraulic fracturing in-situ stress measuring instrument collects the fracturing pressure and time in real time, and obtains the hydraulic fracturing curve of each measuring point. It shows the rise and fall of the pressure (pressure in channel 1) over time as the hydraulic fracturing process progresses, reflecting the response of the rock under hydraulic fracturing and the effect of in-situ stress. The fracture direction of 33.5° north of east in the figure can be used to indicate the direction of the fracture formed during the hydraulic fracturing process.

[0057] Correspondingly, the fracturing pressure, re-tensioning pressure, and instantaneous shut-off pressure can be obtained based on the hydraulic fracturing curve analysis, and the magnitude and orientation of the three-dimensional geostress can be calculated, such as the maximum horizontal principal stress, the minimum horizontal principal stress, and the vertical stress, thereby obtaining geostress distribution data.

[0058] Step 204: Determine the borehole orientation corresponding to the target rock layer based on the minimum principal stress and the orientation of the hydraulic fracture.

[0059] For example, such as Figure 6 As shown, a hydraulic fracturing scenario is illustrated. During hydraulic fracturing, high-pressure fluid is injected into directional boreholes, causing the rock to fracture and form new fractures. Directional boreholes can be used to create a channel in the formation up to the target rock layer. When the horizontal stress σ3 is determined to be the minimum principal stress and the hydraulic fracture is a vertical fracture, the borehole orientation of the directional borehole can be determined as horizontal drilling. After entering the target rock layer, it can be switched to horizontal drilling within this layer. In the figure, σ1 can represent the vertical stress, and σ2 can represent the maximum horizontal principal stress.

[0060] In this way, the borehole orientation can be designed based on the three-dimensional fracture orientation, taking into account the coordination relationship between the borehole and the three-dimensional fracture, optimizing the three-dimensional fracture network structure, effectively eliminating accidents such as water leakage between adjacent fracturing boreholes, avoiding the fracture group being confined to a single horizontal plane, ensuring sufficient fracturing and weakening of multiple thick and hard rock layers, and improving the fracturing prevention and control effect of high mining pressure disasters in ultra-large mining areas.

[0061] Optionally, before step 204, the method in this embodiment may further include: conducting a true triaxial hydraulic fracturing test on the target rock stratum to obtain the orientation of the hydraulic fractures in the target rock stratum.

[0062] For example, a true triaxial hydraulic fracturing test can be carried out on the roof rock. A true triaxial geotechnical engineering model testing machine is used to simulate triaxial geostress, a servo pump pressure system is used to control the discharge rate, and computed tomography (CT) scans are performed on rock samples before and after fracturing to determine the orientation of the hydraulic fractures.

[0063] For example, such as Figure 7The diagram illustrates a test scenario for a true triaxial hydraulic fracturing system for rock. This system includes rock samples, fracturing holes, a loading plate, a hydraulic servo fracturing system, and a true triaxial servo loading system. The hydraulic servo fracturing system comprises a microcomputer, pump control system, hydraulic source servo valves, a booster, a high-pressure water chamber, a water container, and high-pressure valves. The true triaxial servo loading system includes a large true triaxial loading servo booster, a true triaxial loading system controller, a large true triaxial loading system hydraulic source, and a microcomputer. Specifically, the microcomputer controls the hydraulic source, high-pressure valves, and booster according to preset programs and parameters, allowing the fracturing fluid to enter the rock sample at specific pressures and flow rates. The loading plate applies triaxial geostress to the rock sample, simulating a real underground environment. Through precise microcomputer control, the hydraulic fracturing process is finely managed, ensuring optimal fracturing results.

[0064] Correspondingly, CT scanning equipment can be used to scan the fractured rock samples to obtain images of their internal structure. Comparison of CT scan results before and after fracturing can assess the orientation and morphology of the hydraulic fractures. Examples of CT scan results for fractured rock samples include... Figure 8 As shown.

[0065] Optionally, after step 204, the method of this embodiment may further include: generating a borehole trajectory within the working face of the target rock stratum according to the borehole orientation; and determining the borehole length corresponding to the borehole trajectory based on the length of the working face.

[0066] For example, such as Figure 9 As shown, if the horizontal stress σ3 is the minimum principal stress and the hydraulic fracture is a vertical fracture, then after the directional drilling enters the target layer, it will switch to horizontal drilling within this layer. The trajectory of the horizontal section of the borehole will follow the minimum principal stress. The length of the horizontal section of the borehole can be determined according to the distance from the working face boundary, such as the distance to the working face boundary, or by using a preset length (such as 500-1000m). In the figure, σ1 can represent the vertical stress and σ2 can represent the maximum horizontal principal stress.

[0067] For example, such as Figure 10 As shown, if the vertical stress σ3 is the minimum principal stress and the hydraulic fracture is a horizontal fracture, then drilling sites can be set up on both sides of the working face to drill high-angle inclined cross-layer boreholes. The starting point of the borehole is the direct top of this roadway, and the ending point of the borehole is the upper end of the highest layer. The horizontal projection length of the borehole trajectory in this 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, σ1 and σ2 can represent the maximum and minimum horizontal principal stresses, respectively.

[0068] Step 205: Determine the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius of the target rock stratum.

[0069] In this embodiment, determining the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius helps to effectively propagate the fracture and maximize resource utilization. For example, the actual hydraulic fracture propagation radius can be obtained through laboratory or field tests.

[0070] Optionally, step 205 may specifically include: determining the minimum borehole spacing of the target rock stratum using the hydraulic fracture propagation radius.

[0071] For example, the minimum borehole spacing for the target rock formation can be set to twice the hydraulic fracture propagation radius, meaning the borehole spacing can be set to be no less than twice the hydraulic fracture propagation radius (≥2R). For instance, if a hydraulic fracture propagates circularly with a radius of R, the borehole spacing S between two adjacent boreholes can be calculated using the following formula: S≥2R. This ensures that there is no overlap between two adjacent fractures, thereby improving safety during the drilling process.

[0072] In specific application scenarios, the heterogeneity and anisotropy of rock strata can be considered, and the borehole spacing can be adjusted to adapt to different geological conditions. For areas with complex geological conditions or obvious fracture tendency, the borehole spacing can be appropriately reduced to improve the connectivity of the fracture network and the efficiency of resource extraction, optimize engineering costs, and reduce environmental impact.

[0073] Optionally, before determining the borehole spacing of the target rock layer based on the hydraulic fracture propagation radius, the method in this embodiment may further include: collecting core samples from the top plate and determining the lithological parameters of the core samples; and calculating the hydraulic fracture propagation radius based on the lithological parameters.

[0074] In specific applications, core samples can be taken from the roof and processed into rock core samples. For example, selected rock samples can be processed into standard rock samples according to standard dimensions to ensure that the shape and size of the rock samples meet the test requirements. Then, the lithological parameters of the roof rock layers can be determined in the laboratory. The lithological parameters may include, but are not limited to, elastic modulus E and fracture toughness K. IC Poisson's ratio ν, etc., and then selecting the fracturing flow rate Q and fracturing time t, the Penny fracture model (e.g., Figure 11 (As shown) Calculate the hydraulic crack propagation radius R. The formula for calculating the crack propagation size is as follows:

[0075]

[0076] Step 206: Arrange boreholes in the target rock stratum according to the borehole spacing and borehole orientation.

[0077] For example, a borehole arrangement method based on the fracturing and decompression of thick, hard roofs with ultra-high mining heights can be used. This involves laying out a group of boreholes according to the borehole spacing, determining the location of each borehole, and ensuring that the fracturing fractures can fully penetrate the rock strata between the boreholes without overlapping water flow, thereby improving the safety of the fracturing process. For instance, if the borehole spacing is 18 meters, a borehole can be arranged every 18 meters in the rock strata.

[0078] Specifically, each borehole can be numbered and its location marked, with its coordinates and depth recorded. Clear and accurate borehole numbering and location information facilitates subsequent construction and management. During drilling, geological changes and borehole parameters can be monitored regularly, and any abnormalities can be recorded for timely intervention. Furthermore, geological models and fracture propagation data before and after drilling can be compared to evaluate the effectiveness of the borehole layout. Based on the evaluation results, borehole spacing and orientation can be optimized to improve project efficiency.

[0079] As one possible implementation method, the target strata for borehole layout can be determined based on rock stratum data, the fracture propagation orientation and directional borehole layout orientation can be determined based on geostress distribution data, and parameters such as borehole spacing can be determined based on fracture propagation scale. The three-dimensional fracture orientation and propagation scale are used as key parameters to design borehole orientation and spacing, realizing the quantitative design of borehole orientation and spacing and improving the scientific nature of downhole directional borehole layout design.

[0080] Compared with existing technologies, this embodiment can determine the borehole orientation of the target rock layer based on the minimum principal stress and the orientation of the hydraulic fracture, and determine the borehole spacing of the target rock layer based on the hydraulic fracture expansion radius of the target rock layer. It takes into account the coordination relationship between the borehole and the three-dimensional fracture, optimizes the three-dimensional pressure fracture network structure, effectively eliminates accidents such as water leakage between adjacent pressure fracture boreholes, avoids the fracture group being confined to a horizontal plane, and can ensure that multiple thick and hard rock layers are fully fractured and weakened, thereby improving the fracturing prevention and control effect of high mining pressure disasters in ultra-large mining heights.

[0081] Furthermore, as Figure 1 and Figure 2 To specifically implement the method shown, this embodiment provides a drilling arrangement device, such as... Figure 12 As shown, the device includes: an acquisition module 31, a determination module 32, and an arrangement module 33.

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

[0083] The determination module 32 is configured to determine the borehole orientation of the target rock layer based on the geostress distribution data and hydraulic fracture orientation of the target rock layer.

[0084] Module 32 is configured to determine the borehole spacing of the target rock stratum based on the hydraulic fracture propagation radius of the target rock stratum;

[0085] Arrangement module 33 is configured to arrange boreholes in the target rock strata according to the borehole spacing and borehole orientation.

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

[0087] In some examples of this embodiment, the determining module 32 is further configured to generate a borehole trajectory within the working face of the target rock stratum according to the borehole orientation; and to determine the borehole length corresponding to the borehole trajectory based on the length of the working face.

[0088] In some examples of this embodiment, the determination module 32 is specifically configured to conduct a true triaxial hydraulic fracturing test on the target rock layer to obtain the orientation of the hydraulic fractures in the target rock layer.

[0089] In some examples of this embodiment, the determining module 32 is specifically configured to determine the minimum borehole spacing of the target rock stratum using the hydraulic fracture expansion radius.

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

[0091] In some examples of this embodiment, the acquisition module 31 is specifically configured to conduct borehole fracture inspection and in-situ rock strength testing on the roof to acquire the rock strata data of the roof; and to determine the target rock strata based on the rock strata data and preset rock strata characteristic thresholds.

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

[0093] Based on the above, Figure 1 and Figure 2 Accordingly, this embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method. Figure 1 and Figure 2 The method shown.

[0094] Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or portable hard drive) and includes several instructions to cause a computer device (such as a personal computer, server, or network device) to execute the method of the implementation scenario of this application.

[0095] Based on the above, Figure 1 and Figure 2 The method shown, and Figure 12 To achieve the above objectives, the present application also provides an electronic device, such as a personal computer or a server, in the illustrated virtual device embodiment. This device includes a storage medium and a processor; the storage medium stores a computer program; the processor executes the computer program to implement the above-described virtual device. Figure 1 and Figure 2 The method shown.

[0096] Optionally, the aforementioned physical devices may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB interfaces, card reader interfaces, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Wi-Fi interfaces), etc.

[0097] Those skilled in the art will understand that the physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[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 aforementioned physical device, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical device.

[0099] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms, or it can be implemented by hardware. By applying the technical solution of this embodiment, this embodiment can determine the borehole orientation corresponding to the target rock layer based on the minimum principal stress and the hydraulic fracture orientation, and determine the borehole spacing of the target rock layer based on the hydraulic fracture expansion radius of the target rock layer. It considers the coordination relationship between the borehole and the three-dimensional fracture, optimizes the three-dimensional fracture network structure, effectively eliminates accidents such as water leakage between adjacent fracturing boreholes, avoids the fracture group being confined to a horizontal plane, and can ensure that multiple thick and hard rock layers are fully fractured and weakened, thereby improving the fracturing prevention and control effect of ultra-high mining height and strong mine pressure disasters.

[0100] It should be noted that, in this document, 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. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0101] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method of drilling an arrangement, characterized by, The method comprises: obtaining a target rock stratum in a roof of a coal seam to be mined; determining a drilling direction of the target rock stratum according to ground stress distribution data and a hydraulic fracture orientation of the target rock stratum; determining a drilling spacing of the target rock stratum according to a hydraulic fracture propagation radius of the target rock stratum; arranging drilling in the target rock stratum according to the drilling spacing and the drilling direction; wherein the determining of the drilling direction of the target rock stratum according to the ground stress distribution data and the hydraulic fracture orientation of the target rock stratum comprises: determining a minimum principal stress of the target rock stratum according to the ground stress distribution data of the target rock stratum; determining the drilling direction of the target rock stratum corresponding to the minimum principal stress and the hydraulic fracture orientation; wherein after the determining of the drilling direction of the target rock stratum corresponding to the minimum principal stress and the hydraulic fracture orientation, the method further comprises: generating a drilling trajectory in a working face of the target rock stratum according to the drilling direction; determining a drilling length corresponding to the drilling trajectory according to a length of the working face; wherein the determining of the drilling spacing of the target rock stratum according to the hydraulic fracture propagation radius of the target rock stratum comprises: determining a minimum drilling spacing of the target rock stratum by using the hydraulic fracture propagation radius; wherein before the determining of the drilling spacing of the target rock stratum according to the hydraulic fracture propagation radius of the target rock stratum, the method further comprises: collecting a core sample of the roof and measuring lithological parameters of the core sample; calculating the hydraulic fracture propagation radius based on the lithological parameters.

2. The method of claim 1, wherein, before the determining of the drilling direction of the target rock stratum corresponding to the minimum principal stress and the hydraulic fracture orientation, the method further comprises: carrying out a true triaxial hydraulic fracturing test on the target rock stratum to obtain the hydraulic fracture orientation of the target rock stratum.

3. The method of claim 1, wherein, The obtaining of the target rock stratum in the roof of the coal seam to be mined comprises: carrying out borehole fracture peeping and in-situ rock mass strength testing on the roof to obtain rock stratum data of the roof; determining the target rock stratum based on the rock stratum data and a preset rock stratum characteristic threshold.

4. A borehole arrangement device, characterized by The method comprises: an obtaining module configured to obtain a target rock stratum in a roof of a coal seam to be mined; a determining module configured to determine a drilling direction of the target rock stratum according to ground stress distribution data and a hydraulic fracture orientation of the target rock stratum; a determining module configured to determine a drilling spacing of the target rock stratum according to a hydraulic fracture propagation radius of the target rock stratum; an arranging module configured to arrange drilling in the target rock stratum according to the drilling spacing and the drilling direction; wherein the determining module is specifically configured to: determine a minimum principal stress of the target rock stratum according to the ground stress distribution data of the target rock stratum; determine the drilling direction of the target rock stratum corresponding to the minimum principal stress and the hydraulic fracture orientation; wherein the determining module is specifically configured to: after the determining of the drilling direction of the target rock stratum corresponding to the minimum principal stress and the hydraulic fracture orientation, generate a drilling trajectory in a working face of the target rock stratum according to the drilling direction; determining a drilling length corresponding to the drilling trajectory according to a length of the working face; wherein the determining module is specifically configured to: determining the minimum drilling spacing of the target rock formation by using the hydraulic fracture propagation radius; wherein the determining module is specifically configured to: before the determining the drilling spacing of the target rock formation according to the hydraulic fracture propagation radius of the target rock formation, collecting a core sample of the roof and measuring a lithology parameter of the core sample; calculating the hydraulic fracture propagation radius based on the lithology parameter.

5. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by a processor, implements the method of any one of claims 1 to 3.

6. An electronic device comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, The processor, when executing the computer program, implements the method of any one of claims 1 to 3.

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