Coal pillar anti-scour strategy determination method and device, storage medium, processor and program product

Abstract

The application discloses a method and device for determining a coal pillar anti-burst strategy, a storage medium, a processor and a program product. The method comprises the following steps: drilling holes in multiple positions of a target coal pillar in a coal seam, and monitoring the target coal pillar after the drilling to obtain multiple monitoring data corresponding to the multiple positions; determining a target size corresponding to the target coal pillar in a case where the target coal pillar loses bearing capacity based on the multiple monitoring data; determining a bearing performance index of the target coal pillar by using the target size, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; and determining the anti-burst strategy of the target coal pillar in response to the bearing performance index being greater than a bearing performance index threshold, wherein the anti-burst strategy is used to control the target coal pillar and the stress acting on an underlying working face of the target coal pillar. The application solves the technical problem of low safety of mining the underlying working face.

Description

Technical Field

[0001] This application relates to the field of energy processing, and more specifically, to a method, apparatus, storage medium, processor, and program product for determining a coal pillar anti-impact strategy. Background Technology

[0002] Currently, the scale of coal mining is continuously expanding, and the mining depth is also increasing year by year. At the same time, the threat of rockbursts during coal mining is becoming increasingly serious. Numerous major rockburst accidents have occurred in deep mines, resulting in a large number of casualties. Rockbursts have become one of the main dynamic hazards faced in deep coal mining. Furthermore, closely spaced coal seams constitute a large proportion of coal resources, and the number of mining areas dealing with closely spaced coal seams is increasing annually. When the interlayer spacing of coal seams is small, the mining of the upper coal seam will have a significant impact on the lower coal seam. During the mining of the underburden face, the uneven stress distribution in the area affected by the overlying coal pillars can easily lead to rockbursts, posing a huge hidden danger to the safe mining of the underburden face, thus presenting a technical problem of low safety in mining the underburden face.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This application provides a method, apparatus, storage medium, processor, and program product for determining anti-collision strategies for coal pillars, in order to at least solve the technical problem of low safety in the mining of the underlying working face.

[0005] According to one aspect of the embodiments of this application, a method for determining an anti-scour strategy for a coal pillar is provided. The method may include: drilling at multiple locations of a target coal pillar in a coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to the multiple locations; determining the target size of the target coal pillar when it loses its bearing capacity based on the multiple monitoring data; determining the bearing capacity index of the target coal pillar using the target size, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar; and determining an anti-scour strategy for the target coal pillar in response to the bearing capacity index being greater than a bearing capacity index threshold, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0006] Optionally, in response to the bearing capacity index being greater than the bearing capacity index threshold, a rockfall prevention strategy for the target coal pillar is determined, including: in response to the bearing capacity index being greater than the bearing capacity index threshold, determining the impact degree of the target coal pillar on the underlying working face; and determining a rockfall prevention strategy that matches the impact degree.

[0007] Optionally, determining a shock-proof strategy that matches the degree of impact includes: determining the impact range of the target coal pillar on the underlying working face; and determining a shock-proof strategy that matches the degree of impact based on the impact range.

[0008] Optionally, based on multiple monitoring data, the target size corresponding to the target coal pillar when it loses its bearing capacity is determined, including: determining the average of multiple monitoring data to obtain initial monitoring data; and transforming the initial monitoring data to obtain the target size.

[0009] Optionally, the initial monitoring data is transformed to obtain the target size, including: retrieving the correction coefficient; using the correction coefficient to correct the initial monitoring data to obtain the target monitoring data; and transforming the target monitoring data to obtain the target size.

[0010] Optionally, the bearing capacity index of the target coal pillar is determined using the target size, including: determining that the bearing capacity index is less than or equal to the bearing capacity index threshold in response to the target size being greater than the width of the target coal pillar; and determining that the bearing capacity index is greater than the bearing capacity index threshold in response to the target size being less than or equal to the width.

[0011] According to another aspect of the embodiments of this application, a device for determining the anti-scour strategy of a coal pillar is also provided. The device may include: a processing unit, used to drill holes at multiple locations of a target coal pillar in a coal seam and monitor the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; a first determining unit, used to determine the target size of the target coal pillar when it loses its bearing capacity based on the multiple monitoring data; a second determining unit, used to determine the bearing performance index of the target coal pillar using the target size, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; and a third determining unit, used to determine the anti-scour strategy of the target coal pillar in response to the bearing performance index being greater than a bearing performance index threshold, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0012] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is running, it controls the device where the computer-readable storage medium is located to execute the method for determining the anti-collision strategy of the coal pillar according to the embodiments of this application.

[0013] According to another aspect of the embodiments of this application, a processor is also provided for running a program, wherein the program is executed by the processor to perform the method for determining the anti-collision strategy of the coal pillar according to the embodiments of this application.

[0014] According to another aspect of the embodiments of this application, a computer program product is also provided, the computer program product including computer instructions, wherein when the computer instructions are executed by a processor, the method for determining the anti-collision strategy of the coal pillar of the embodiments of this application is implemented.

[0015] In this embodiment, boreholes are drilled at multiple locations of the target coal pillar in the coal seam, and the target coal pillars are monitored after drilling to obtain multiple monitoring data corresponding to multiple locations. Based on the multiple monitoring data, the target size of the target coal pillar when it loses its bearing capacity is determined. Using the target size, the bearing capacity index of the target coal pillar is determined, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar. In response to the bearing capacity index being greater than the bearing capacity index threshold, an anti-scour strategy for the target coal pillar is determined, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face. In other words, in this embodiment of the application, the target coal pillar is drilled to obtain multiple monitoring data of the target coal pillar. Based on the multiple monitoring data, the target size corresponding to the loss of load-bearing capacity of the target coal pillar can be determined. Based on the target size, the load-bearing capacity of the target coal pillar is judged to determine the actual load-bearing capacity (i.e., load-bearing performance index) of the coal pillar. Furthermore, if the load-bearing performance index is greater than the load-bearing performance index threshold, an anti-scour strategy can be determined. Using the anti-scour strategy, the target coal pillar can be protected, thereby solving the technical problem of low safety of the mining underface and achieving the technical effect of improving the safety of the mining underface. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a flowchart of a method for determining a coal pillar anti-impact strategy according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of a coal powder zigzag line in a coal pillar drilling method based on drill cuttings, according to an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of a coal pillar blast hole according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the vertical stress distribution during coal pillar lowering according to an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of a device for determining a coal pillar anti-impact strategy according to an embodiment of this application;

[0022] Figure 6 This is a structural block diagram of a computer terminal according to an embodiment of this application;

[0023] Figure 7 This is a block diagram of an electronic device for determining a coal pillar anti-impact strategy according to an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] According to an embodiment of this application, an embodiment of a method for determining a coal pillar anti-impact strategy is provided. The steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0027] This embodiment proposes a method for determining a coal pillar anti-scour strategy. This method involves drilling into the target coal pillar to obtain multiple monitoring data points. Based on these data, the target size corresponding to the loss of load-bearing capacity of the coal pillar can be determined. The load-bearing capacity of the coal pillar is then assessed based on the target size to determine its actual load-bearing capacity (i.e., load-bearing performance index). Furthermore, if the load-bearing performance index is greater than a threshold value, an anti-scour strategy can be determined. This anti-scour strategy protects the target coal pillar, thereby solving the technical problem of low safety in the underlying working face and achieving the technical effect of improving the safety of the underlying working face.

[0028] Figure 1 This is a flowchart illustrating a method for determining a coal pillar anti-impact strategy according to an embodiment of this application, as shown below. Figure 1 As shown, the method may include the following steps:

[0029] In step S102, boreholes are drilled at multiple locations of the target coal pillar in the coal seam, and the target coal pillars after drilling are monitored to obtain multiple monitoring data corresponding to multiple locations.

[0030] In the technical solution provided in step S102 of this application, the target coal pillar can be a residual coal pillar or a protective coal pillar in the upper working face, or it can refer to an unmined coal pillar formed during coal mining. The monitoring data can be the depth corresponding to different borehole locations, and can be used to characterize the boundary between sparsely fractured areas and areas without obvious fractures in the target coal pillar, or it can be the borehole depth at the peak of drill cuttings. It should be noted that there are no specific restrictions on the type of monitoring data here.

[0031] Optionally, the aforementioned coal seam can be a coal seam within a mine. The presence of these residual coal pillars may affect the stability and safety of the mine, as they may experience problems such as spontaneous combustion, gas accumulation, or changes in ground pressure over time.

[0032] Optionally, boreholes can be drilled at multiple locations within the target coal pillar in the coal seam, and the drilled target coal pillars can be monitored. For example, small-diameter boreholes can be drilled at multiple locations to obtain multiple monitoring data corresponding to multiple locations. These locations can be planned by the testing personnel.

[0033] Step S104: Based on multiple monitoring data, determine the target size of the target coal pillar when it loses its bearing capacity.

[0034] In the technical solution provided in step S104 of this application, after acquiring multiple monitoring data, the target size of the target coal pillar when it loses its bearing capacity can be determined based on the multiple monitoring data. The target size can be the sum of the widths of the densely fractured area and the sparsely fractured area of ​​the coal pillar, and can be the minimum size (D1) at which the coal pillar loses its bearing capacity. No specific restrictions are placed on the form of the target size here.

[0035] Optionally, multiple monitoring data points can be acquired and transformed to obtain the target size.

[0036] Step S106: Using the target size, determine the bearing capacity index of the target coal pillar, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar.

[0037] In the technical solution provided in step S106 of this application, the bearing capacity index of the target coal pillar can be determined using the target size. The bearing capacity index represents the bearing capacity of the target coal pillar and can be used to determine the bearing capacity of the target coal pillar at the current moment.

[0038] Optionally, the target coal pillar can be assessed using its target dimensions to determine its load-bearing capacity. Furthermore, based on the load-bearing capacity of the target coal pillar, it can be determined whether scour prevention treatment is necessary.

[0039] Step S108: In response to the bearing capacity index being greater than the bearing capacity index threshold, a scour prevention strategy for the target coal pillar is determined, wherein the scour prevention strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0040] In the technical solution provided in step S108 of this application, if the bearing capacity index is greater than the bearing capacity index threshold, it can be determined that the target coal pillar has bearing capacity, which will cause stress concentration in the underlying working face. Therefore, an anti-scour strategy for the target coal pillar can be determined. This anti-scour strategy can control the stress exerted by the target coal pillar on the underlying working face. The aforementioned anti-scour strategy can be an anti-scour measure, which can protect the underlying working face.

[0041] Currently, the scale of coal mining is continuously expanding, and the mining depth is also increasing year by year. At the same time, the threat of rockbursts during coal mining is becoming increasingly serious. Several major rockburst accidents have occurred in deep mines, resulting in numerous casualties. Rockbursts have become one of the main dynamic hazards faced in deep coal mining. Furthermore, closely spaced coal seams constitute a large proportion of coal resources, and the number of mining areas dealing with closely spaced coal seams is increasing annually. When the interlayer spacing of coal seams is small, the mining of the upper coal seam will have a significant impact on the lower coal seam. The stress on the roof strata below the coal pillar left by the upper working face is much higher than the original rock stress. During the mining of the underburden face, rockbursts are prone to occur due to uneven stress distribution when entering and exiting the area affected by the overlying coal pillar, posing a huge hidden danger to the safe mining of the underburden face.

[0042] Closely spaced coal seams constitute a large proportion of coal resources. When the interlayer spacing of coal seams is small, the coal pillars left by the upper working face will have a significant impact on the mining of the underlying coal seams. The stress of the underlying coal seams is much higher than that of the original rock. During the mining of the underlying working face, rockbursts are prone to occur due to uneven stress distribution in the process of entering and exiting the area affected by the overlying coal pillars. Therefore, it is necessary to propose a method for judging the stability of the overlying protective coal pillars and preventing rockbursts in multi-coal seam mining, so as to provide a guarantee for the safe mining of the underlying coal seams.

[0043] This embodiment proposes a method for determining the anti-rockburst strategy for coal pillars, providing a clear understanding of the stability assessment and rockburst prevention of overlying protective coal pillars in multi-coal-seam mining. For the stability assessment and rockburst prevention of overlying protective coal pillars in multi-coal-seam mining, the types of coal pillars left over from repeated mining can be classified according to the pillar width; the stability (i.e., bearing capacity) of the coal pillar can be determined based on the results of coal pillar borehole inspection; the influence range of the type of left-overlying coal pillar on the underlying working face can be determined through theoretical analysis; and anti-rockburst measures can be taken for target coal pillars that are affected by rockbursts in the underlying working face. This method can be used for the stability assessment and rockburst prevention of overlying protective coal pillars in multi-coal-seam mining. By combining field measurements and theoretical analysis, it aims to determine the stability of the overlying coal pillar and its impact on the underlying coal seam, and to take targeted prevention measures, thereby solving the technical problem of low safety in mining the underlying working face and achieving the technical effect of improving the safety of mining the underlying working face.

[0044] Through steps S102 and S108 of this application, boreholes are drilled at multiple locations of the target coal pillar in the coal seam, and the target coal pillars are monitored after drilling to obtain multiple monitoring data corresponding to multiple locations; based on the multiple monitoring data, the target size corresponding to the target coal pillar when it loses its bearing capacity is determined; using the target size, the bearing capacity index of the target coal pillar is determined, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar; in response to the bearing capacity index being greater than the bearing capacity index threshold, an anti-scour strategy for the target coal pillar is determined, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face. In other words, in this embodiment of the application, the target coal pillar is drilled to obtain multiple monitoring data of the target coal pillar. Based on the multiple monitoring data, the target size corresponding to the loss of load-bearing capacity of the target coal pillar can be determined. Based on the target size, the load-bearing capacity of the target coal pillar is judged to determine the actual load-bearing capacity (i.e., load-bearing performance index) of the coal pillar. Furthermore, if the load-bearing performance index is greater than the load-bearing performance index threshold, an anti-scour strategy can be determined. Using the anti-scour strategy, the target coal pillar can be protected, thereby solving the technical problem of low safety of the mining underface and achieving the technical effect of improving the safety of the mining underface.

[0045] The method described in this embodiment will be further described below.

[0046] As an optional implementation, step S108, in response to the bearing capacity index being greater than the bearing capacity index threshold, determines the anti-scour strategy for the target coal pillar, including: in response to the bearing capacity index being greater than the bearing capacity index threshold, determining the impact degree of the target coal pillar on the underlying working face; and determining an anti-scour strategy that matches the impact degree.

[0047] In this embodiment, if the bearing capacity index is greater than the bearing capacity index threshold, the impact degree of the target coal pillar on the underlying working face can be determined. This impact degree can include strong impact, weak impact, and medium impact. Based on the impact degree, an anti-impact strategy matching the impact degree can be determined.

[0048] For example, if the bearing capacity index is greater than the bearing capacity index threshold, it can be determined that the target coal pillar has a rockburst impact on the underlying working face, and rockburst prevention measures can be taken for the target coal pillar. Furthermore, the rockburst hazard level (i.e., the degree of rockburst) can be determined based on the width (D) of the target coal pillar. For instance, when the sum of the widths of the densely fractured area and the sparsely fractured area of ​​the target coal pillar (D1) ≤ D ≤ 1.1D1, the degree of rockburst can be determined as weak rockburst, and the target coal pillar can be a weak rockburst hazard coal pillar; when 1.1D1 ≤ D ≤ 1.3D1, the degree of rockburst can be determined as medium rockburst, and the target coal pillar can be determined as a medium rockburst hazard coal pillar; when D ≥ 1.3D1, the degree of rockburst can be determined as strong rockburst, and the target coal pillar can be determined as a strong rockburst hazard coal pillar.

[0049] Optionally, anti-impact strategies corresponding to different impact levels can be determined in advance. Therefore, after determining the impact level of the target coal pillar, an anti-impact strategy matching the impact level can be determined.

[0050] For example, for coal pillars with weak impact risk, large-diameter boreholes can be used in the underlying working face to transfer coal stress to deeper parts of the coal seam. For coal pillars with moderate impact risk, large-diameter boreholes can also be used in the underlying working face to transfer coal stress to deeper parts of the coal seam, while directional long boreholes can be used for segmented hydraulic fracturing of the roof to relieve pressure. For coal pillars with strong impact risk, boreholes are drilled into the underlying roof to the interior of the coal pillar, and the pillar is blasted to completely break it up.

[0051] It should be noted that the methods for determining the degree of impact and the methods for determining the anti-impact strategy described above are only illustrative examples and are not subject to specific limitations.

[0052] As an optional implementation method, determining a shock-proof strategy that matches the impact level includes: determining the impact range of the target coal pillar on the underlying working face; and determining a shock-proof strategy that matches the impact level based on the impact range.

[0053] In this embodiment, the impact range of the target coal pillar on the underlying working face can be determined. Furthermore, based on the impact range, the effect range of the target coal pillar on the underlying working face can be determined. Further, based on the impact range, an anti-impact strategy matching the degree of impact can be determined. Here, the aforementioned impact range can be the influence range of the remaining coal pillar on the underlying working face, and can be represented by (-x, x).

[0054] Optionally, the influence range of the type of residual coal pillar on the underlying working face is determined, characterized in that coal pillars with a width less than D1 have no load-bearing capacity and have no impact on the underlying working face; coal pillars with a width greater than D1 have load-bearing capacity and will cause stress concentration in the underlying working face, and the formula for the vertical stress distribution of the coal pillar is:

[0055]

[0056] Where q can be the uniformly distributed load on the bottom rock mass, in megapascals (MPa). L can be the width (D) of the coal pillar, in meters (m).

[0057] Optionally, when σy≤0.1MPa, the target coal pillar can be considered to have no impact on the underlying working face. Furthermore, the degree of influence of the target coal pillar on the underlying working face at different locations can be determined by the above formula, thereby determining the actual influence area of ​​the target coal pillar on the underlying working face: (-x, x). This actual influence area can be the impact range, and based on this impact range, an anti-impact strategy matching the impact degree can be determined.

[0058] For example, to determine the stress exerted by the target coal pillar on the underlying working face, vertical stress curves can be plotted at 5m, 10m, 15m, 20m, and 33m below the coal pillar (corresponding to y-axis). For instance, based on the vertical stress region, it can be seen that the vertical stress 25m outwards from both sides of the target coal pillar's centerline is less than 0.1MPa. Therefore, there is varying degrees of stress concentration within 25m outwards from both sides of the coal pillar in the underlying working face, resulting in an impact range of (25, -25). If the target coal pillar is determined to be a high-impact hazardous coal pillar, then a hole can be drilled along the roof of the underlying working face to the interior of the coal pillar, and the pillar can be blasted to completely break it.

[0059] As an optional implementation, step S104, based on multiple monitoring data, determines the target size corresponding to the target coal pillar when it loses its bearing capacity, including: determining the average of multiple monitoring data to obtain initial monitoring data; and converting the initial monitoring data to obtain the target size.

[0060] In this embodiment, monitoring data from different locations can be acquired to obtain multiple monitoring data. The average of the multiple monitoring data can be determined to obtain initial monitoring data. The multiple initial monitoring data can be transformed to obtain the target size.

[0061] Optionally, a small-diameter borehole is drilled into the target coal pillar to obtain multiple monitoring data. Based on these data, a curve can be plotted showing the amount of drill cuttings per unit length versus the borehole depth. The curve indicates that the borehole depth at the peak of the drill cuttings per unit length is D2, which represents the boundary between the sparsely fractured area and the area without a clear fracture, as measured by the drill cuttings. The borehole depth used to peek into the severely fractured area inside the coal pillar is D3, which also represents the boundary between the sparsely fractured area and the area without a clear fracture, as measured by the borehole peek. Using this method, monitoring data D2 and D3 can be obtained. The average of D2 and D3 can be calculated to obtain initial monitoring data. This initial monitoring data can then be transformed to obtain the target size.

[0062] Optionally, transforming the initial monitoring data to obtain the target size may include the following steps.

[0063] As an optional implementation method, the initial monitoring data is transformed to obtain the target size, including: retrieving the correction coefficient; correcting the initial monitoring data using the correction coefficient to obtain the target monitoring data; and transforming the target monitoring data to obtain the target size.

[0064] In this embodiment, to improve the accuracy of the determined target size, a correction coefficient can be retrieved according to the actual situation. This correction coefficient is then used to correct the initial monitoring data to obtain the target monitoring data. The target monitoring data can also be transformed to obtain the target size.

[0065] Optionally, the stability (i.e., bearing capacity) of the target coal pillar can be determined by the target size, and the average of multiple monitoring data can be determined to obtain initial monitoring data. A correction factor can be used to correct the initial monitoring data to obtain the target monitoring data, which can be the maximum pore depth in the sparse fracture zone of the coal pillar. The densely fractured area, sparsely fractured area, and no obvious fractured area are symmetrically distributed on both sides of the target coal pillar. Therefore, the sum of the widths of the densely fractured area and the sparsely fractured area of ​​the coal pillar can be: D1 = 2D, thus obtaining the target size (D1).

[0066] As an optional implementation, step S106, using the target size, determines the bearing capacity index of the target coal pillar, including: in response to the target size being greater than the width of the target coal pillar, determining that the bearing capacity index is less than or equal to the bearing capacity index threshold; in response to the target size being less than or equal to the width, determining that the bearing capacity index is greater than the bearing capacity index threshold.

[0067] In this embodiment, the width (D) of the target coal pillar is determined. If the target dimension is greater than the width of the target coal pillar, it can be determined that the target coal pillar has no load-bearing capacity and has no impact on the underlying working face. That is, the load-bearing performance index of the target coal pillar can be determined to be less than or equal to the load-bearing performance index threshold. If the width of the target coal pillar is greater than or equal to D1, it can be determined that the target coal pillar has load-bearing capacity and will cause stress concentration in the underlying working face. That is, the load-bearing performance index of the target coal pillar can be determined to be greater than or equal to the load-bearing performance index threshold.

[0068] In this embodiment, a small-diameter borehole can be drilled into the coal pillar to generate a curve showing the amount of drill cuttings per unit length versus the borehole depth. Figure 2 This is a schematic diagram of a coal powder fracture line in a coal pillar drilling method based on drill cuttings, according to an embodiment of this application. Figure 2 As shown, drilling can be performed at two locations (e.g., borehole #1 and borehole #2) in the target coal pillar to obtain monitoring data corresponding to these two locations. For example, monitoring data can be obtained through borehole inspection using drill cuttings. Furthermore, based on the monitoring data, a graph can be plotted as shown below. Figure 2 The graph shown. According to... Figure 2 It can be seen that the drilling depth at the peak of the drill cuttings per unit length corresponding to borehole #1 is D2, which is the boundary between the sparsely fractured area and the area without obvious fractures as measured by the drill cuttings. The drilling depth in the severely fractured area inside the coal pillar corresponding to borehole #2 is D3, which is the boundary between the sparsely fractured area and the area without obvious fractures as measured by borehole inspection. Based on the actual situation, a correction factor can be selected. The densely fractured area, sparsely fractured area, and area without obvious fractures are symmetrically distributed on both sides of the coal pillar, and the maximum borehole depth in the sparsely fractured area of ​​the coal pillar is... Furthermore, the sum of the widths of the densely fractured zone and the sparsely fractured zone of the coal pillar can be determined, that is, the target size D1 = 2D.

[0069] Optionally, the bearing capacity of the target coal pillar can be determined using the target size. If the width of the target coal pillar is less than that of the coal pillar D1, it can be determined that the target coal pillar has no bearing capacity and has no impact on the underlying working face. If the width of the target coal pillar is greater than that of the coal pillar D1, it can be determined that the target coal pillar has bearing capacity and will cause stress concentration in the underlying working face.

[0070] In this embodiment, if the bearing capacity index is determined to be greater than the bearing capacity index threshold, the target coal pillar can be identified as a rockfall hazard coal pillar. Furthermore, the vertical stress corresponding to different locations can be determined, and based on the vertical stress, the influence range (x, -x) of the rockfall hazard coal pillar can be determined.

[0071] In this embodiment, corresponding anti-impact measures can be taken according to the impact hazard level of the target coal pillar. The impact hazard level can be classified as strong, medium, or weak.

[0072] In this embodiment, Figure 2 Using the drill cuttings method, the amount of drill cuttings per unit length of the target coal pillar in the B2 coal seam of a certain mine can be plotted. From the drill cuttings per unit length curves of boreholes #1 and #2, it can be seen that the peak stress of the coal pillar is reached at a borehole depth of approximately 5.9m. Observation of the internal fracture conditions of the coal pillar through drill cuttings drilling revealed that the fractures on the borehole wall at depths of 2m, 3m, and 4m are more obvious, while the fractures at 6m are fewer and less obvious. Based on the actual field conditions, a correction factor of 0.10 is taken. Therefore, the maximum borehole depth in the sparse fracture zone of the coal pillar is:

[0073]

[0074] Therefore, the minimum size (i.e. the target size) at which the coal pillar loses its bearing capacity is D1 = 2D = 13m.

[0075] Optionally, Figure 3 This is a schematic diagram of a coal pillar blast hole according to an embodiment of this application, as shown below. Figure 3 As shown, the 2-2 coal pillar in the B2 goaf layer of this coal mine is located between the I010202 and I010206 working faces, with a width of 17.5m (>1.3D1), and is a coal pillar with strong impact hazard. The I010102 working face of the B1 coal seam is 33m below it. The influence range of the 2-2 coal pillar on the I010102 working face is analyzed based on the vertical stress calculation formula:

[0076]

[0077] Optionally, Figure 4 This is a schematic diagram of the vertical stress distribution during coal pillar lowering according to an embodiment of this application, as shown below. Figure 4 As shown, vertical stress curves can be plotted at depths of 5m, 10m, 15m, 20m, and 33m below the coal pillar. Figure 4 As shown, the vertical stress extending 25m outwards from both sides of the coal pillar's centerline is less than 0.1MPa. Therefore, within a 25m radius outwards from both sides of the coal pillar in the I010102 working face, there is stress concentration of varying degrees. Based on the above analysis, it can be concluded that the 2-2 coal pillar is a high-impact hazard coal pillar. A borehole can be drilled along the roof of the B1 coal seam working face to the interior of the coal pillar for blasting, causing complete breakage of the coal pillar. The drilling location can be as follows: Figure 3 As shown.

[0078] In this embodiment, boreholes are drilled at multiple locations of the target coal pillar in the coal seam, and the target coal pillars are monitored after drilling to obtain multiple monitoring data corresponding to multiple locations. Based on the multiple monitoring data, the target size of the target coal pillar when it loses its bearing capacity is determined. Using the target size, the bearing capacity index of the target coal pillar is determined, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar. In response to the bearing capacity index being greater than the bearing capacity index threshold, an anti-scour strategy for the target coal pillar is determined, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face, thereby solving the technical problem of low safety in mining the underlying working face and achieving the technical effect of improving the safety of mining the underlying working face.

[0079] According to an embodiment of this application, a device for determining a coal pillar anti-impact strategy is also provided. It should be noted that the device for determining a coal pillar anti-impact strategy in this embodiment can be used to execute the method for determining a coal pillar anti-impact strategy in Embodiment 1 of this application.

[0080] Figure 5 This is a schematic diagram of a device for determining a coal pillar anti-impact strategy according to an embodiment of this application. Figure 5 As shown, the device 50 for determining the anti-collision strategy of the coal pillar may include: a processing unit 502, a first determining unit 504, a second determining unit 506, and a third determining unit 508.

[0081] The processing unit 502 is used to drill holes at multiple locations of the target coal pillar in the coal seam, and to monitor the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations.

[0082] The first determining unit 504 is used to determine the target size of the target coal pillar when it loses its bearing capacity, based on multiple monitoring data.

[0083] The second determining unit 506 is used to determine the bearing capacity index of the target coal pillar using the target size, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar.

[0084] The third determining unit 508 is used to determine the anti-scour strategy of the target coal pillar in response to the bearing capacity index being greater than the bearing capacity index threshold. The anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0085] The device for determining the anti-scour strategy of the coal pillar in this embodiment, through a processing unit, drills at multiple locations of the target coal pillar in the coal seam and monitors the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; through a first determining unit, based on the multiple monitoring data, it determines the target size of the target coal pillar when it loses its bearing capacity; through a second determining unit, it uses the target size to determine the bearing performance index of the target coal pillar, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; through a third determining unit, in response to the bearing performance index being greater than the bearing performance index threshold, it determines the anti-scour strategy of the target coal pillar, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face, thereby solving the technical problem of low safety in mining the underlying working face and achieving the technical effect of improving the safety of mining the underlying working face.

[0086] Embodiments of this application may provide a computer terminal, which may be any computer terminal device in a group of computer terminals. Optionally, in this embodiment, the aforementioned computer terminal may also be replaced by a mobile terminal or other terminal device.

[0087] Optionally, in this embodiment, the computer terminal may be located in at least one of a plurality of network devices in a computer network.

[0088] In this embodiment, the computer terminal described above can execute the program code for the following steps in the method for determining the anti-scour strategy of a coal pillar: drilling at multiple locations of the target coal pillar in the coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; based on the multiple monitoring data, determining the target size of the target coal pillar when it loses its bearing capacity; using the target size, determining the bearing performance index of the target coal pillar, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; in response to the bearing performance index being greater than the bearing performance index threshold, determining the anti-scour strategy of the target coal pillar, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0089] Optionally, Figure 6 This is a structural block diagram of a computer terminal according to an embodiment of this application, such as... Figure 6 As shown, the computer terminal 608 may include one or more (only one is shown in the figure) processors 602, memory 604, and transmission devices 606.

[0090] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the method and apparatus for determining the anti-collision strategy of the coal pillar in this embodiment. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned method for determining the anti-collision strategy of the coal pillar. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 608 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0091] The processor can invoke information and application programs stored in the memory via a transmission device to perform the following steps: drilling at multiple locations of the target coal pillar in the coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; based on the multiple monitoring data, determining the target size of the target coal pillar when it loses its bearing capacity; using the target size, determining the bearing performance index of the target coal pillar, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; in response to the bearing performance index being greater than the bearing performance index threshold, determining the anti-scour strategy for the target coal pillar, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0092] Those skilled in the art will understand that Figure 6 The structure shown is for illustrative purposes only. The computer terminal 608 can also be a smartphone (such as an Android phone, an iOS phone, etc.), a tablet computer, a handheld computer, a mobile internet device (MID), a PAD, or other terminal device. Figure 6 This does not limit the structure of the computer terminal 608 described above. For example, the computer terminal 608 may also include components that are more advanced than those described above. Figure 6 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 6 The different configurations shown.

[0093] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0094] According to an embodiment of this application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein the program executes the method for determining the coal pillar anti-impact strategy in the above embodiments.

[0095] Optionally, in this embodiment, the computer-readable storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0096] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: drilling at multiple locations of the target coal pillar in the coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; determining the target size of the target coal pillar when it loses its bearing capacity based on the multiple monitoring data; determining the bearing performance index of the target coal pillar using the target size, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; and determining an anti-scour strategy for the target coal pillar in response to the bearing performance index being greater than a bearing performance index threshold, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0097] Optionally, the aforementioned computer-readable storage medium may also execute program code that performs the following steps: in response to a bearing capacity index exceeding a bearing capacity index threshold, determining the impact degree of the target coal pillar on the underlying working face; and determining an anti-impact strategy matching the impact degree.

[0098] Optionally, the aforementioned computer-readable storage medium may also execute program code that performs the following steps: determining the impact range of the target coal pillar on the underlying working face; and, based on the impact range, determining an anti-impact strategy that matches the degree of impact.

[0099] Optionally, the computer-readable storage medium may also execute program code that performs the following steps: determining the mean of multiple monitoring data to obtain initial monitoring data; and transforming the initial monitoring data to obtain the target size.

[0100] Optionally, the aforementioned computer-readable storage medium may also execute program code that performs the following steps: retrieves correction coefficients; corrects the initial monitoring data using the correction coefficients to obtain target monitoring data; and converts the target monitoring data to obtain the target size.

[0101] Optionally, the aforementioned computer-readable storage medium may also execute program code that performs the following steps: in response to a target size being greater than the width of the target coal pillar, determining that the bearing capacity index is less than or equal to a bearing capacity index threshold; in response to a target size being less than or equal to the width, determining that the bearing capacity index is greater than the bearing capacity index threshold.

[0102] In this embodiment, the target coal pillar is drilled to obtain multiple monitoring data of the target coal pillar. Based on the multiple monitoring data, the target size corresponding to the loss of load-bearing capacity of the target coal pillar can be determined. Based on the target size, the load-bearing capacity of the target coal pillar is judged to determine the actual load-bearing capacity (i.e., load-bearing performance index) of the coal pillar. Furthermore, if the load-bearing performance index is greater than the load-bearing performance index threshold, an anti-scour strategy can be determined. Using the anti-scour strategy, the target coal pillar can be protected, thereby solving the technical problem of low safety of the mining underface and achieving the technical effect of improving the safety of the mining underface.

[0103] According to an embodiment of this application, a processor is also provided for running a program, wherein the method for determining the coal pillar anti-collision strategy in the above embodiment is executed when the program is run by the processor.

[0104] Optionally, in this embodiment, the computer terminal may be located in at least one of a plurality of network devices in a computer network.

[0105] In this embodiment, the computer terminal described above can execute the program code for the following steps in the method for determining the anti-scour strategy of a coal pillar: drilling at multiple locations of the target coal pillar in the coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; based on the multiple monitoring data, determining the target size of the target coal pillar when it loses its bearing capacity; using the target size, determining the bearing performance index of the target coal pillar, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; in response to the bearing performance index being greater than the bearing performance index threshold, determining the anti-scour strategy of the target coal pillar, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0106] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the method and apparatus for determining the anti-collision strategy of the coal pillar in the embodiments of this application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned method for determining the anti-collision strategy of the coal pillar. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0107] The processor can invoke information and application programs stored in the memory via a transmission device to perform the following steps: drilling at multiple locations of the target coal pillar in the coal seam, and monitoring the target coal pillar after drilling to obtain multiple monitoring data corresponding to multiple locations; based on the multiple monitoring data, determining the target size of the target coal pillar when it loses its bearing capacity; using the target size, determining the bearing performance index of the target coal pillar, wherein the bearing performance index is used to represent the bearing capacity of the target coal pillar; in response to the bearing performance index being greater than the bearing performance index threshold, determining the anti-scour strategy for the target coal pillar, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face.

[0108] Optionally, the processor may also execute program code that performs the following steps: in response to a bearing capacity index exceeding a bearing capacity index threshold, determining the impact degree of the target coal pillar on the underlying working face; and determining an anti-impact strategy that matches the impact degree.

[0109] Optionally, the processor may also execute program code that performs the following steps: determining the impact range of the target coal pillar on the underlying working face; and determining an anti-impact strategy that matches the degree of impact based on the impact range.

[0110] Optionally, the processor may also execute program code that performs the following steps: determining the mean of multiple monitoring data to obtain initial monitoring data; and transforming the initial monitoring data to obtain the target size.

[0111] Optionally, the processor may also execute program code that performs the following steps: receiving multiple historical reports from various information collection channels; preprocessing the historical reports; and extracting features from the preprocessed historical reports to obtain a second feature vector set corresponding to the preprocessed historical reports.

[0112] Optionally, the processor may also execute program code that performs the following steps: in response to the target size being greater than the width of the target coal pillar, determines that the bearing capacity index is less than or equal to the bearing capacity index threshold; in response to the target size being less than or equal to the width, determines that the bearing capacity index is greater than the bearing capacity index threshold.

[0113] Optionally, the processor may also execute program code that performs the following steps: determining the target object's preference for the associated report based on the target object's behavioral information, wherein the behavioral information is used to characterize the target object's document preference; determining that the relevance is greater than the relevance threshold in response to the preference being greater than the preference threshold; and determining that the relevance is less than or equal to the relevance threshold in response to the preference being less than or equal to the preference threshold.

[0114] In this embodiment, the computer terminal described above can execute the program code for the following steps in the method for determining the anti-collision strategy of the coal pillar: obtaining the pending report of the target object; determining the pending chapter in the pending report; determining the third feature vector set corresponding to the pending chapter, wherein the third feature vector set is used at least to characterize the text content of the pending chapter and / or the attribute information corresponding to the pending chapter; using the third feature vector set, determining at least one associated chapter among multiple historical chapters that is associated with the pending chapter; determining the degree of association between the at least one associated chapter and the pending chapter respectively; and determining the chapter to be recommended among the at least one associated chapter based on the degree of association.

[0115] In this embodiment of the application, the target coal pillar is drilled to obtain multiple monitoring data of the target coal pillar. Based on the multiple monitoring data, the target size corresponding to the loss of load-bearing capacity of the target coal pillar can be determined. Based on the target size, the load-bearing capacity of the target coal pillar is judged to determine the actual load-bearing capacity (i.e., load-bearing performance index) of the coal pillar. Furthermore, if the load-bearing performance index is greater than the load-bearing performance index threshold, an anti-scour strategy can be determined. Using the anti-scour strategy, the target coal pillar can be protected, thereby solving the technical problem of low safety of the mining underface and achieving the technical effect of improving the safety of the mining underface.

[0116] According to an embodiment of this application, a computer program product is also provided, which includes computer instructions, wherein when the computer instructions are executed by a processor, they implement the method for determining the anti-collision strategy of the coal pillar in the above embodiment.

[0117] Embodiments of this application may provide an electronic device that may include a memory and a processor.

[0118] Figure 7 This is a block diagram of an electronic device for determining a coal pillar anti-impact strategy according to an embodiment of this application. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present application described and / or claimed herein.

[0119] like Figure 7As shown, device 700 includes a computing unit 701, which can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) 702 or a computer program loaded from storage unit 708 into random access memory (RAM) 703. RAM 703 can also store various programs and data required for the operation of device 700. The computing unit 701, ROM 702, and RAM 703 are interconnected via bus 704. Input / output (I / O) interface 705 is also connected to bus 704.

[0120] Multiple components in device 700 are connected to I / O interface 705, including: input unit 706, such as keyboard, mouse, etc.; output unit 707, such as various types of monitors, speakers, etc.; storage unit 708, such as disk, optical disk, etc.; and communication unit 709, such as network card, modem, wireless transceiver, etc. Communication unit 709 allows device 700 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0121] The computing unit 701 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 701 performs the various methods and processes described above, such as data verification methods. For example, in some embodiments, the data verification method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 708. In some embodiments, part or all of the computer program may be loaded and / or installed on device 700 via ROM 702 and / or communication unit 709. When the computer program is loaded into RAM 703 and executed by the computing unit 701, one or more steps of the data verification method described above may be performed. Alternatively, in other embodiments, the computing unit 701 may be configured to perform a data verification method by any other suitable means (e.g., by means of firmware).

[0122] According to an embodiment of this application, a method for determining a coal pillar anti-impact strategy is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0123] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0124] The program code used to implement the methods of this application may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0125] In the context of this application, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0126] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display, monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or pathball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0127] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication (e.g., a communication network) of any form or medium. Examples of communication networks include Local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

[0128] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0129] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0130] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0131] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0132] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0133] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0134] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0135] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for determining an anti-collision strategy for coal pillars, characterized in that, include: Drilling was performed at multiple locations of the target coal pillar in the coal seam, and the target coal pillar was monitored after drilling to obtain multiple monitoring data corresponding to the multiple locations; Based on multiple monitoring data, the target size of the target coal pillar when it loses its bearing capacity is determined, wherein the target size is the sum of the widths of the densely fractured area and the sparsely fractured area of ​​the coal pillar; Using the target size, the bearing capacity index of the target coal pillar is determined, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar; In response to the bearing capacity index being greater than the bearing capacity index threshold, an anti-scour strategy for the target coal pillar is determined, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face of the target coal pillar; The step of determining the bearing capacity index of the target coal pillar using the target size includes: determining that the bearing capacity index is less than or equal to a bearing capacity index threshold in response to the target size being greater than the width of the target coal pillar; and determining that the bearing capacity index is greater than the bearing capacity index threshold in response to the target size being less than or equal to the width.

2. The method according to claim 1, characterized in that, The step of determining the anti-scouring strategy for the target coal pillar in response to the bearing capacity index being greater than the bearing capacity index threshold includes: In response to the bearing capacity index being greater than the bearing capacity index threshold, the impact degree of the target coal pillar on the underlying working face is determined; Determine the impact protection strategy that matches the impact level.

3. The method according to claim 2, characterized in that, The determination of the anti-impact strategy matching the impact level includes: Determine the impact range of the target coal pillar on the underlying working face; Based on the impact range, an anti-impact strategy matching the impact severity is determined.

4. The method according to claim 1, characterized in that, The determination of the target size of the target coal pillar under the condition of losing its bearing capacity based on multiple monitoring data includes: Determine the mean of the multiple monitoring data to obtain initial monitoring data; The initial monitoring data is transformed to obtain the target size.

5. The method according to claim 4, characterized in that, The process of converting the initial monitoring data to obtain the target size includes: Retrieve correction factors; The initial monitoring data is corrected using the correction coefficient to obtain the target monitoring data; The target monitoring data is converted to obtain the target size.

6. A device for determining an anti-collision strategy for a coal pillar, characterized in that, include: The processing unit is used to drill holes at multiple locations of the target coal pillar in the coal seam, and to monitor the target coal pillar after drilling to obtain multiple monitoring data corresponding to the multiple locations. The first determining unit is used to determine the target size of the target coal pillar when it loses its bearing capacity based on multiple monitoring data, wherein the target size is the sum of the widths of the densely fractured area and the sparsely fractured area of ​​the coal pillar; The second determining unit is used to determine the bearing capacity index of the target coal pillar using the target size, wherein the bearing capacity index is used to represent the bearing capacity of the target coal pillar; The third determining unit is used to determine the anti-scour strategy of the target coal pillar in response to the bearing capacity index being greater than the bearing capacity index threshold, wherein the anti-scour strategy is used to control the stress exerted by the target coal pillar on the underlying working face of the target coal pillar. The second determining unit is further configured to, in response to the target size being greater than the width of the target coal pillar, determine that the bearing capacity index is less than or equal to the bearing capacity index threshold; and in response to the target size being less than or equal to the width, determine that the bearing capacity index is greater than the bearing capacity index threshold.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 5.

8. A processor, characterized in that, The processor is used to run a program, wherein the program is executed by the processor to perform the method according to any one of claims 1 to 5.

9. A computer program product, characterized in that, Includes computer instructions that, when executed by a processor, implement the method described in any one of claims 1 to 5.

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