Method and device for detecting boundary of collapse column and electronic equipment

Abstract

The application provides a method and device for detecting the boundary of a collapse column and electronic equipment. The method comprises the following steps: obtaining an initial boundary range of the collapse column; determining the positions of at least one drill field based on the initial boundary range of the collapse column; constructing a boundary detection hole based on the initial boundary range of the collapse column and the positions of the at least one drill field, and determining a target boundary position of the boundary detection hole in the construction process; performing curve fitting based on the target boundary position to obtain a target curve; and determining a target boundary range of the collapse column based on the target curve. Thus, the development boundary of the collapse column can be accurately determined, which lays a foundation for reasonably treating the collapse column and ensuring the safe production of the mine.

Description

Technical Field

[0001] This application relates to the field of special mining engineering technology in geological structures, and in particular to a method, device and electronic equipment for boundary detection of collapse columns. Background Technology

[0002] Karst collapse columns are a unique geological phenomenon widely developed in coalfields. They are concealed vertical structures that typically cause damage to coal seam integrity, impact tunneling progress, and reduce coal production. The water conductivity and severity of collapse columns vary significantly depending on their development stage. During coal mining, collapse columns can become excellent water conduits, leading to water inrush accidents. Water inrushes from collapse columns are characterized by their concealment, suddenness, and large volume, seriously threatening the safe mining of coal resources.

[0003] Therefore, accurately exploring the development boundary of collapse columns before mining, so as to carry out reasonable management of collapse columns, is of great significance to the safe production of mines. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] This application proposes a method, device, and electronic equipment for detecting the boundary of a collapse column, so as to accurately determine the development boundary of the collapse column and lay the foundation for reasonable management of the collapse column to ensure safe production in the mine.

[0006] The first aspect of this application proposes a method for boundary detection of a collapse column, comprising: obtaining an initial boundary range of the collapse column; determining the location of at least one drilling site based on the initial boundary range of the collapse column; constructing a boundary detection hole based on the initial boundary range of the collapse column and the location of the at least one drilling site, and determining the target boundary location where anomalies occur during the construction of the boundary detection hole; performing curve fitting based on the target boundary location to obtain a target curve; and determining the target boundary range of the collapse column based on the target curve.

[0007] The method for boundary detection of a collapse column in this application involves obtaining the initial boundary range of the collapse column, determining the location of at least one drilling site based on the initial boundary range, constructing boundary detection holes based on the initial boundary range of the collapse column and the location of at least one drilling site, determining the target boundary location where abnormal situations occur during the construction of the boundary detection holes, performing curve fitting based on the target boundary location to obtain a target curve, and determining the target boundary range of the collapse column based on the target curve. This method can accurately determine the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine.

[0008] A second aspect of this application provides a boundary detection device for a collapse column, comprising: a first acquisition module for acquiring the initial boundary range of the collapse column; a first determination module for determining the location of at least one drilling site based on the initial boundary range of the collapse column; a second determination module for constructing boundary detection holes based on the initial boundary range of the collapse column and the location of the at least one drilling site, and determining the target boundary location where anomalies occur during the construction of the boundary detection holes; a fitting module for performing curve fitting based on the target boundary location to obtain a target curve; and a third determination module for determining the target boundary range of the collapse column based on the target curve.

[0009] The boundary detection device for a collapse column in this application obtains the initial boundary range of the collapse column, determines the location of at least one drilling site based on the initial boundary range, constructs boundary detection holes based on the initial boundary range of the collapse column and the location of at least one drilling site, determines the target boundary location where abnormal situations occur during the construction of the boundary detection holes, performs curve fitting based on the target boundary location to obtain a target curve, and determines the target boundary range of the collapse column based on the target curve. This device can accurately determine the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine.

[0010] A third aspect of this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method described in the first aspect of this application described above.

[0011] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method described in the first aspect of this application described above.

[0012] A fifth aspect of this application provides a computer program product including a computer program that, when executed by a processor, implements the method described in the first aspect of this application above.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0015] Figure 1 A flowchart illustrating a method for detecting the boundary of a collapsed column provided in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of a method for detecting the boundary of a collapse column when the initial boundary range of the collapse column is determined by geophysical exploration technology, as provided in an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of a method for detecting the boundary of a collapsed column in the case of exposure through a tunneling face and determination of the initial boundary range of the collapsed column based on the fracture development characteristics of the collapsed column, as provided in an embodiment of this application.

[0018] Figure 4 A flowchart illustrating another method for boundary detection of a collapsed column provided in an embodiment of this application;

[0019] Figure 5 A flowchart illustrating another method for boundary detection of a collapsed column provided in an embodiment of this application;

[0020] Figure 6 A flowchart illustrating another method for boundary detection of a collapsed column provided in an embodiment of this application;

[0021] Figure 7 A schematic diagram of the structure of a boundary detection device for a collapsed column provided in an embodiment of this application;

[0022] Figure 8 This is a block diagram of an electronic device used to implement the boundary detection method for a collapsed column according to embodiments of the present disclosure. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0024] The relevant techniques usually involve geophysical exploration and drilling to delineate the boundaries of collapse columns, but the development boundaries of collapse columns determined in this way are not accurate.

[0025] To accurately determine the development boundary of a collapse column, this application proposes a method, apparatus, electronic device, storage medium, and computer program product for detecting the boundary of a collapse column. The method includes: acquiring the initial boundary range of the collapse column; determining the location of at least one drilling site based on the initial boundary range; constructing boundary detection holes based on the initial boundary range and the location of the at least one drilling site; determining the target boundary location where anomalies occur during the construction of the boundary detection holes; performing curve fitting based on the target boundary location to obtain a target curve; and determining the target boundary range of the collapse column based on the target curve. This allows for accurate determination of the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine.

[0026] The following description, with reference to the accompanying drawings, details the boundary detection method, apparatus, electronic device, storage medium, and computer program product for a collapsed column provided in the embodiments of this application.

[0027] Figure 1 This is a flowchart illustrating a method for boundary detection of a collapsed column provided in an embodiment of this application.

[0028] In this embodiment, the method for detecting the boundary of a collapsed pillar is configured in a device for detecting the boundary of a collapsed pillar. This device for detecting the boundary of a collapsed pillar can be applied to any electronic device with computing capabilities so that the device can execute the method for detecting the boundary of a collapsed pillar.

[0029] like Figure 1 As shown, the boundary detection method for this collapse column may include the following steps:

[0030] Step 101: Obtain the initial boundary range of the collapse column.

[0031] In one embodiment of this application, the initial boundary range of a collapse column can be preliminarily determined based on existing collapse column detection data. Specifically, the initial boundary range of the collapse column may include the coordinates corresponding to its initial boundary location.

[0032] For example, the initial boundary of a collapse column can be preliminarily delineated using geophysical exploration techniques; that is, the initial boundary of the collapse column can be determined through geophysical exploration. Alternatively, the collapse column can be exposed through the tunneling face, and the initial boundary of the collapse column can be preliminarily inferred based on the observed fracture development characteristics of the collapse column; that is, the initial boundary of the collapse column can be determined based on the fracture development characteristics of the collapse column exposed through the tunneling face. Thus, a collapse column boundary detection device can obtain the initial boundary of the collapse column.

[0033] Step 102: Based on the initial boundary range of the collapse column, determine the location of at least one drilling site.

[0034] The drilling site refers to the area where drilling equipment operates. The number of drilling sites can be set according to the specific needs of the scenario.

[0035] In one embodiment of this application, if the initial boundary range of the collapse column is determined by geophysical exploration, the number of drilling sites can be determined to be at least one, and the at least one drilling site can be determined to be located in a stable coal and rock mass outside the initial boundary range of the collapse column and at a distance greater than a first threshold. Therefore, at least one drilling site can be arranged in the stable coal and rock mass outside the initial boundary range of the collapse column and at a distance greater than the first threshold.

[0036] The distance between the drilling site and the initial boundary range in a stable coal and rock mass refers to the distance between the drilling site and the point closest to the drilling site within the initial boundary range.

[0037] The first threshold can be set as needed. The maximum value among the preset values. Where M represents the coal seam thickness in meters (m); W represents the maximum water pressure assuming the collapse column connects to the aquifer in megapascals (MPa); R... t This represents the tensile strength of the coal body, expressed in MPa, and can be obtained experimentally. The preset value can be set arbitrarily as needed; this application does not impose any restrictions on this.

[0038] For example, refer to Figure 2 The initial boundary range of the collapse column, determined by geophysical exploration techniques, is... Figure 2 As shown by the dashed line F1, assuming a preset value of 30m, the number of drilling sites can be determined to be 1, and this drilling site is located outside the initial boundary range F1 of the collapse column, and the distance between it and the initial boundary range F1 is greater than... And in stable coal and rock masses greater than 30m.

[0039] In one embodiment of this application, when the initial boundary range of the collapse column is revealed by the tunneling face and determined based on the fracture development characteristics of the collapse column, the number of drilling sites can be determined to be at least two. The at least two drilling sites are located outside the initial boundary range of the collapse column in a stable coal and rock mass with a distance greater than a second threshold. The at least two drilling sites are located on both sides of the roadway, and the distance between the at least two drilling sites is greater than or equal to a third threshold and less than or equal to a fourth threshold.

[0040] The second, third, and fourth thresholds can be set as needed, and this application does not impose any restrictions on them.

[0041] For example, refer to Figure 3Based on the characteristics of the fracture development of the collapsed column, and after excavation at the working face, the initial boundary range of the collapsed column was determined to be... Figure 3 As shown by the dashed line F2, assuming the second threshold is 30m, the third threshold is 5m, and the fourth threshold is 10m, then the number of drilling sites can be determined to be 2, and these two drilling sites, i.e. Figure 3 Drilling sites “1#” and “2#” are located in stable coal and rock masses outside the initial boundary of the collapse column and at a distance greater than 30m from the initial boundary. The two drilling sites are located on both sides of the roadway, and the distance between the two drilling sites is greater than or equal to 5m and less than or equal to 10m, that is, the distance between the two drilling sites is 5 to 10 meters.

[0042] Furthermore, if the initial boundary of the collapse column is determined by excavation face exposure and based on the fracture development characteristics of the collapse column, a water-retaining wall can be constructed for safety reasons. For details, refer to... Figure 3 A water-resistant wall with a thickness of 10 to 20 meters can be constructed in the roadway, starting from the exposure position closest to the drilling site within the initial boundary range. The thickness of the water-resistant wall is set according to the water pressure of the aquifer near the collapse column. The greater the water pressure, the greater the thickness of the water-resistant wall. The water-resistant wall is connected by 0.5m × 0.5m wire mesh, and the grooves around it are cut into the coal and rock mass to a depth of at least 0.5m.

[0043] Step 103: Based on the initial boundary range of the collapse column and the location of at least one drilling site, construct boundary detection holes and determine the target boundary location where anomalies occur during the construction of the boundary detection holes.

[0044] Among them, the boundary detection hole is used to detect the boundary of the collapse column. The boundary detection hole can be a core drilling hole.

[0045] Abnormal situations may include at least one of the following: changes in lithology in the coal seam, such as changes in lithology to broken rock blocks, or a complete rock core but with disordered lithology; abnormal core recovery rate, such as a significant change in core recovery rate compared to that in a normal coal seam; drilling encounters, such as encountering stuck drill or drill dropping during the drilling process; and significant leakage of circulating fluid.

[0046] In one embodiment of this application, drilling equipment can be placed in the drilling site according to the location of the drilling site, and one final hole position can be determined on each side of the outer end of the initial boundary range, wherein the final hole position is spaced a certain distance from the initial boundary range. Then, the drilling equipment in the drilling site can be controlled to construct boundary detection holes along the direction of the two final hole positions, and whether there are any abnormalities during the construction of the two boundary detection holes can be marked. If no abnormalities occur during the construction of the two boundary detection holes, the final positions of the two boundary detection holes can be determined from the outside in (i.e., between the two boundary detection holes). The drilling equipment is then controlled to construct the boundary detection holes along the direction of the newly determined final positions. This process of determining the final positions and constructing the boundary detection holes from the outside in is repeated until all boundary detection holes between the two boundary detection holes on both sides of the initial boundary range are constructed. If abnormalities occur during the construction of the two boundary detection holes on both sides of the initial boundary range, the final positions of the two boundary detection holes need to be determined from the outside in (i.e., away from the midpoint between the two boundary detection holes). The drilling equipment in the drilling site is then controlled to construct the boundary detection holes along the direction of the newly determined final positions until no abnormalities occur during the construction of the boundary detection holes. Then, the boundary detection holes are constructed one by one from the outside in, following the same method. The location of the boundary detection hole where abnormalities occur during construction can be called the target boundary location.

[0047] The spacing between the final holes of each boundary detection hole can be set as needed, for example, 5 to 10 meters, and the larger the initial boundary range of the collapse column, the larger the spacing between the final holes.

[0048] It should be noted that when there is only one drilling site, all boundary detection holes are constructed by the drilling equipment in that drilling site along the direction of the final hole position of the boundary detection hole; when there are multiple drilling sites, for each boundary detection hole, a suitable drilling site can be selected as needed, and the drilling equipment in the selected drilling site can be used to construct the boundary detection hole along the direction of the final hole position of that boundary detection hole.

[0049] For example, refer to Figure 2 If the initial boundary of the collapse column is determined using geophysical exploration, there can be one drilling site. Drilling equipment can be placed within this site based on its location, and two final borehole positions can be determined on either side of the outer edge of the initial boundary. These final borehole positions are spaced a certain distance from the initial boundary, allowing the drilling equipment to be controlled to operate along the directions of these two final borehole positions. Figure 2The boundary detection holes X1 and X2 are shown in the diagram, and any abnormalities encountered during their construction are marked. If any abnormalities occur during the construction of the two boundary detection holes X1 and X2 on both sides of the outer edge of the initial boundary range, the final positions of the two boundary detection holes need to be determined further outwards, and the drilling equipment in the drilling site should be controlled to construct along the direction of the two newly determined final positions. Figure 2 The boundary detection holes are shown as X3 and X4. If no abnormalities occur during the construction of these two boundary detection holes (X3 and X4), the final positions of the two boundary detection holes can be determined from the outside in, and the drilling equipment can be controlled to proceed along the direction of these newly determined final positions. Figure 2 The boundary detection holes are shown as X5 and X6. Then, the final position of another boundary detection hole is determined from the outside in, and the drilling equipment is controlled to drill along the direction of this newly determined final position. Figure 2 The boundary detection hole shown in X7 is used to complete the construction of all boundary detection holes between the two boundary detection holes on both sides of the outer end of the initial boundary range.

[0050] refer to Figure 3 If the initial boundary of the collapse column is determined based on the fracture development characteristics of the collapse column after exposure through the tunneling face, two drilling sites can be used. Drilling equipment can be placed in each of these two sites, and a final borehole position can be determined on each side of the outer end of the initial boundary. The final borehole position is spaced a certain distance from the initial boundary, thereby controlling the drilling equipment in "Drilling Site #1" to operate in the direction shown by Z1. Figure 3 The boundary detection hole shown in Z1 controls the drilling equipment in "Drilling Site #2" to operate in the direction shown in Z2. Figure 3 The boundary detection holes Z2 are marked, and any abnormalities are noted during their construction. If no abnormalities are found during the construction of the two boundary detection holes Z1 and Z2 on either side of the initial boundary, the final positions of the two boundary detection holes can be determined from the outside in, and the drilling equipment in "Drilling Site #1" can be controlled to operate in the direction indicated by Z3. Figure 3 The boundary detection hole shown in Z3 controls the drilling equipment in "Drilling Site #2" to operate in the direction shown in Z4. Figure 3 The boundary detection hole is shown as Z4. The process of determining the final hole location and constructing the boundary detection holes from the outside in is then repeated until the construction of boundary detection holes Z5, Z6, Z7, Z8, Z9, and Z10 is completed.

[0051] It should be noted that the above example only illustrates the construction process of some boundary detection holes.

[0052] Step 104: Perform curve fitting based on the target boundary position to obtain the target curve.

[0053] Step 105: Determine the target boundary range of the collapse column based on the target curve.

[0054] In the embodiments of this application, the least squares method can be used to interpolate based on the target boundary position to obtain the target curve, and the position corresponding to the target curve can be determined as the location of the target boundary range of the collapse column.

[0055] The method for boundary detection of a collapse column in this application involves obtaining the initial boundary range of the collapse column, determining the location of at least one drilling site based on the initial boundary range, constructing boundary detection holes based on the initial boundary range of the collapse column and the location of at least one drilling site, determining the target boundary location where abnormal situations occur during the construction of the boundary detection holes, performing curve fitting based on the target boundary location to obtain a target curve, and determining the target boundary range of the collapse column based on the target curve. This method can accurately determine the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine.

[0056] The following is combined Figure 4 The boundary detection method for collapsed columns provided in the embodiments of this application will be further described.

[0057] Figure 4 This is a flowchart illustrating another method for boundary detection of a collapsed column provided in an embodiment of this application. Figure 4 As shown, the boundary detection method for this collapse column may include the following steps:

[0058] Step 401: Obtain the initial boundary range of the collapse column.

[0059] Step 402: Based on the initial boundary range of the collapse column, determine the location of at least one drilling site.

[0060] The specific implementation process and principle of steps 401-402 can be found in the descriptions of other embodiments, and will not be repeated here.

[0061] Step 403: Obtain the parameters of the water exploration borehole.

[0062] Among them, the water exploration borehole is used to detect the water conduction of the collapse column.

[0063] The parameters for water exploration boreholes may include the number of boreholes, the final location of the boreholes, and the spacing between them. The number of boreholes, the final location of the boreholes, and the spacing between them can be set as needed, and this application does not impose any restrictions on these parameters.

[0064] In one embodiment of this application, the number of water exploration boreholes can be greater than or equal to three. The final position of each water exploration borehole is 5-10m from the coal seam floor (i.e., the vertical distance from the final position of the water exploration borehole to the coal seam floor is 5-10m). Furthermore, the horizontal and vertical projections of the water exploration boreholes are arranged in a fan shape (i.e., the projections of each water exploration borehole do not overlap in the horizontal and vertical directions). The horizontal distance between the final positions of each water exploration borehole is not greater than 1 / 4 of the expected length of the collapse column (i.e., the distance between the two farthest points in the initial boundary range), and the length of the borehole casing is not less than 5a. Here, 'a' is the rounded-up integer value of the maximum water pressure value of the aquifer assumed to be connected by the collapse column, in meters (m).

[0065] Step 404: Based on the initial boundary range of the collapse column, the location of at least one drilling site, and the parameters of the water exploration borehole, construct the water exploration borehole.

[0066] In one embodiment of this application, drilling equipment can be placed in the drilling site according to the location of the drilling site, and the drilling equipment in the drilling site can be controlled to construct water exploration boreholes within the initial boundary range of the collapse column according to the parameters of the water exploration borehole.

[0067] It should be noted that when there is only one drilling site, all water exploration boreholes are drilled by the drilling equipment in that drilling site into the initial boundary of the collapse column; when there are multiple drilling sites, for each water exploration borehole, a suitable drilling site can be selected as needed, and the drilling equipment in the selected drilling site can be used to drill into the initial boundary of the collapse column.

[0068] refer to Figure 2 The initial boundary range of the collapse column, determined by geophysical exploration techniques, is... Figure 2 As shown by the dashed line F1, there can be one drilling site. Drilling equipment can be placed within the site based on its location, and at least three water exploration boreholes can be constructed within the initial boundary of the collapse column, according to the parameters of the water exploration boreholes. The final position of each water exploration borehole is 5–10 m from the coal seam floor. Both the horizontal and vertical projections of the water exploration boreholes are arranged in a fan shape. Furthermore, the horizontal distance between the final positions of each water exploration borehole is no greater than 1 / 4 of the expected length of the collapse column, and the casing length of the borehole opening is no less than 5a.

[0069] refer to Figure 3 Based on the characteristics of the fracture development of the collapsed column, and after excavation at the working face, the initial boundary range of the collapsed column was determined to be... Figure 3As shown by the dashed line F2, there can be two drilling sites. Drilling equipment can be placed in both sites, and the drilling equipment in "Drilling Site #1" can be controlled to construct at least three water exploration boreholes within the initial boundary of the collapse column, according to the parameters of the water exploration boreholes. The final position of each water exploration borehole should be 5-10m from the coal seam floor. Furthermore, the horizontal and vertical projections of the water exploration boreholes should be arranged in a fan shape, and the horizontal distance between the final positions of each water exploration borehole should not exceed 1 / 4 of the expected length of the collapse column. The casing length of the water exploration borehole should not be less than 5a.

[0070] Step 405: Confirm that no water flow has occurred at the location of the water exploration borehole.

[0071] In one embodiment of this application, the water inflow at each water exploration borehole location can be recorded during the construction of the boreholes. If no water inflow is observed at any of the borehole locations, it indicates no safety risk, and step 406 and subsequent steps can be directly executed.

[0072] If water inflow is detected at the location of at least one of the water exploration boreholes, indicating a safety risk, the collapse column can be treated first before proceeding with step 406 and subsequent steps to improve safety. Specifically, after step 404, the procedure may further include: when water inflow occurs at the location of the water exploration borehole, obtaining the stratum where the water source of the collapse column is located, wherein the stratum is determined based on the water quality test results of the water gushing from the location of the water exploration borehole; based on the stratum, constructing a first grouting borehole at a predetermined distance from the top or bottom of the coal seam for grouting reinforcement until the water inflow at the location of the water exploration borehole disappears.

[0073] The preset distance can be set as needed, for example, to be less than or equal to 30m.

[0074] Specifically, for water exploration boreholes where water inflow occurs, workers can collect water samples from the borehole location and perform water quality analysis. By comparing the water ion concentrations in this sample with those of water near the coal seam roof and floor, they can determine whether the water sample originated from the coal seam roof or floor, thus identifying whether the collapse column's water source is located in the coal seam roof or floor. Correspondingly, the collapse column boundary detection device can obtain the stratum at which the collapse column's water source is located, as determined by the water quality analysis results of the water inflow from the borehole location.

[0075] Furthermore, when the boundary detection device for the collapse column determines, based on the water quality test results of the water gushing from a certain water-exploring borehole, that the stratum where the water source of the collapse column is located is the coal seam roof, it can control the drilling equipment to construct the first grouting borehole within a 30m range of the coal seam roof for grouting reinforcement until the water gushing at the location of the water-exploring borehole disappears. Conversely, when the boundary detection device for the collapse column determines, based on the water quality test results of the water gushing from a certain water-exploring borehole, that the stratum where the water source of the collapse column is located is the coal seam floor, it can control the drilling equipment to construct the first grouting borehole within a 30m range of the coal seam floor for grouting reinforcement until the water gushing at the location of the water-exploring borehole disappears.

[0076] Step 406: Based on the initial boundary range of the collapse column and the location of at least one drilling site, construct boundary detection holes and determine the target boundary location where anomalies occur during the construction of the boundary detection holes.

[0077] Step 407: Perform curve fitting based on the target boundary position to obtain the target curve.

[0078] Step 408: Determine the target boundary range of the collapse column based on the target curve.

[0079] The specific implementation process and principle of steps 406-408 can be found in the descriptions of other embodiments, and will not be repeated here.

[0080] The method for boundary detection of a collapse column according to this application involves obtaining the initial boundary range of the collapse column, determining the location of at least one drilling site based on the initial boundary range, obtaining the parameters of a water exploration borehole, constructing the water exploration borehole based on the initial boundary range of the collapse column, the location of at least one drilling site, and the parameters of the water exploration borehole, confirming that no water inflow occurs at the location of the water exploration borehole, constructing a boundary detection hole based on the initial boundary range of the collapse column and the location of at least one drilling site, and determining the target boundary location where abnormalities occur during the construction of the boundary detection hole, performing curve fitting based on the target boundary location to obtain a target curve, and determining the target boundary range of the collapse column based on the target curve. This method can accurately determine the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine. Furthermore, by combining the water conductivity of the collapse column and boundary detection simultaneously, the safety of boundary detection can be improved.

[0081] In one possible implementation, after determining the development boundary of the collapse column, reasonable mitigation measures can be taken to ensure safe production in the mine. The following section addresses this situation in conjunction with... Figure 5 The boundary detection method for collapsed columns provided in the embodiments of this application will be further described.

[0082] Figure 5This is a flowchart illustrating another method for boundary detection of a collapsed column provided in an embodiment of this application.

[0083] like Figure 5 As shown, in Figure 1 Step 105 shown or Figure 4 Following step 408 shown, the boundary detection method for the collapsed column may further include the following steps:

[0084] Step 501: Construct the second grouting borehole at different layers of the collapse column, and during the construction of the second grouting borehole, when the water inflow of the second grouting borehole reaches the target water inflow and the water pressure at the borehole opening of the second grouting borehole reaches the target water pressure, obtain the current borehole inclination length of the second grouting borehole.

[0085] In one embodiment of this application, a second grouting borehole can be constructed at different layers within the target boundary range of the collapse column. That is, the final position of the second grouting borehole is located at different layers within the target boundary range. During the construction of the second grouting borehole, the water inflow and borehole pressure of the second grouting borehole are determined in real time. When it is determined that the water inflow of the second grouting borehole reaches the target water inflow and the borehole pressure of the second grouting borehole reaches the target water pressure, the current borehole inclination length of the second grouting borehole is obtained.

[0086] The target inflow rate and target water pressure can be set as needed.

[0087] For example, the target inflow rate can be set to Among them, Q z Indicates the target inflow rate; d z This indicates the borehole diameter, in meters (m); d w Q represents the borehole diameter for aquifer discharge tests, in meters (m). w This indicates the borehole water inflow rate during aquifer release tests, expressed in cubic meters (m³). 3 / h (cubic meters per hour).

[0088] The target water pressure can be set to Among them, P z H represents the target water pressure. w H represents the aquifer water level elevation, in meters (m). m This indicates the elevation of the borehole opening for water exploration drilling, in meters (m).

[0089] Step 502: Determine the target effective water-tight layer thickness corresponding to the current borehole inclination length based on the mapping relationship between borehole inclination length and effective water-tight layer thickness.

[0090] The mapping relationship between borehole inclination length and effective aquitard thickness can be expressed as the following formula (1):

[0091] H e=L'(sinα-cosαtgβ) (1)

[0092] Among them, H e ' represents the effective water-resistant layer thickness; L' represents the borehole inclination length; α represents the borehole inclination angle of the second grouting borehole (i.e., the angle between the second grouting borehole and the coal seam); β represents the coal seam dip angle (i.e., the angle between the coal seam and the horizontal plane).

[0093] refer to Figure 6 Wherein, the dip angle of the coal seam is β, which can be determined according to... Figure 6 As shown, a second grouting borehole is constructed at different strata within the target boundary range of the collapse column in the drilling site. The drilling inclination angle of the second grouting borehole is α. During the construction of the second grouting borehole, it is determined that the water inflow of the second grouting borehole reaches the target water inflow. Furthermore, the water pressure at the orifice of the second grouting borehole reached the target water pressure. At that time, the current borehole inclination length of the second grouting borehole is obtained. Assuming L is the current borehole inclination length, L can be substituted into L' in formula (1) to obtain the target effective aquitard thickness H corresponding to the current borehole inclination length L. e .

[0094] Step 503: When the effective water-tight layer thickness is greater than or equal to the rock fracture thickness, grouting is performed based on the second grouting borehole.

[0095] In one embodiment of this application, the rock strata fracture thickness is H. d = 0.0287h + 0.0543β + 1.6437M + 0.0130B - 4.0173. Where H... d The values ​​represent the rock fracture thickness during coal seam mining, in meters (m); h represents the mining depth, in meters (m); β represents the coal seam dip angle, in degrees (°); M represents the coal seam thickness, in meters (m); and B represents the working face width, in meters (m).

[0096] In one embodiment of this application, the target effective waterproof layer thickness H e Greater than or equal to the rock fracture thickness H d At that time, grouting treatment can be carried out directly based on the second grouting borehole.

[0097] Step 504: When the thickness of the target effective water-tight layer is less than the thickness of the rock fracture, determine the target borehole inclination length corresponding to the thickness of the rock fracture, and continue to construct the second grouting borehole until the borehole inclination length of the second grouting borehole reaches the target borehole inclination length, and then perform grouting based on the second grouting borehole.

[0098] In one embodiment of this application, reference is made to Figure 6 At the target effective water-resistant layer thickness H e Less than the rock fracture thickness H dAt that time, the target borehole slant length corresponding to the rock stratum fracture thickness can be determined as follows: And continue construction of the second grouting borehole, wherein the inclined length of the continued borehole is... Until the borehole inclination length of the second grouting borehole reaches the target borehole inclination length. Then, grouting treatment is carried out based on the second grouting borehole.

[0099] Understandably, when treating collapse columns, related technologies involve grouting at the top of the confined aquifer on the bottom of the coal seam where the collapse column is located, without considering the effective water-tightness of the non-water-conducting layers of the collapse column. This results in a large amount of ineffective drilling footage, a large grouting treatment area, and high treatment costs. However, the embodiments of this application can determine a reasonable grouting treatment area when treating collapse columns, thereby avoiding a large amount of ineffective drilling footage and saving treatment costs.

[0100] With the above Figures 1 to 6 Corresponding to the boundary detection method for collapsed columns provided in the embodiments, this application also provides a boundary detection device for collapsed columns. Because the boundary detection device for collapsed columns provided in the embodiments of this application is similar to the one described above... Figures 1 to 6 The method for detecting the boundary of a collapsed column provided in the embodiments corresponds to the method for detecting the boundary of a collapsed column provided in the embodiments of this application. Therefore, the implementation of the method for detecting the boundary of a collapsed column is also applicable to the device for detecting the boundary of a collapsed column provided in the embodiments of this application. It will not be described in detail in the embodiments of this application.

[0101] Figure 7 This is a schematic diagram of the structure of a boundary detection device for a collapsed column provided in an embodiment of this application.

[0102] like Figure 7 As shown, the boundary detection device 700 for the collapsed column may include: a first acquisition module 710, a first determination module 720, a second determination module 730, a fitting module 740, and a third determination module 750.

[0103] The first acquisition module 710 is used to acquire the initial boundary range of the collapsed column;

[0104] The first determining module 720 is used to determine the location of at least one drilling site based on the initial boundary range of the collapse column;

[0105] The second determining module 730 is used to construct boundary detection holes based on the initial boundary range of the collapse column and the location of at least one drilling site, and to determine the target boundary location where anomalies occur during the construction of the boundary detection holes.

[0106] The fitting module 740 is used to perform curve fitting based on the target boundary position to obtain the target curve;

[0107] The third determining module 750 is used to determine the target boundary range of the collapse column based on the target curve.

[0108] Furthermore, in one possible implementation of this application embodiment, the initial boundary range of the collapse column is determined by geophysical exploration technology; the first determining module 720 is used for:

[0109] The number of drilling sites is determined to be at least one, and the drilling sites are located in stable coal and rock masses outside the initial boundary range of the collapse column and at a distance greater than a first threshold.

[0110] Furthermore, in another possible implementation of this application embodiment, the initial boundary range of the collapse column is determined based on the fracture development characteristics of the collapse column, as revealed by the tunneling face; the first determining module 720 is used for:

[0111] The number of drilling sites is determined to be at least two, and each drilling site is located in a stable coal and rock mass outside the initial boundary range of the collapse column and at a distance greater than the second threshold. At least two drilling sites are located on both sides of the roadway, and the distance between at least two drilling sites is greater than or equal to the third threshold and less than or equal to the fourth threshold.

[0112] Furthermore, in another possible implementation of this application embodiment, the boundary detection device 700 for the collapsed column may further include:

[0113] The second acquisition module is used to acquire parameters of the water exploration borehole;

[0114] The first processing module is used to construct water exploration boreholes based on the initial boundary range of the collapse column, the location of at least one drilling site, and the parameters of the water exploration borehole.

[0115] The fourth determination module is used to determine whether there is any water inflow at the location of the water exploration borehole.

[0116] Furthermore, in another possible implementation of this application embodiment, the boundary detection device 700 for the collapsed column may further include:

[0117] The third acquisition module is used to acquire the stratum where the water source of the collapse column is located when water gushing occurs at the location of the water exploration borehole. The stratum is determined based on the water quality test results of the water gushing out at the location of the water exploration borehole.

[0118] The second processing module is used to construct the first grouting borehole for grouting reinforcement at a preset distance from the top or bottom of the coal seam, based on the stratum, until the water inflow at the location of the water exploration borehole disappears.

[0119] Furthermore, in another possible implementation of this application embodiment, the boundary detection device 700 for the collapsed column may further include:

[0120] The fourth acquisition module is used to construct the second grouting borehole at different layers of the collapse column, and during the construction of the second grouting borehole, when the water inflow of the second grouting borehole reaches the target water inflow and the water pressure at the borehole opening of the second grouting borehole reaches the target water pressure, the current borehole inclination length of the second grouting borehole is acquired.

[0121] The fifth determining module is used to determine the target effective aquitard thickness corresponding to the current borehole inclination length based on the mapping relationship between borehole inclination length and effective aquitard thickness.

[0122] The third processing module is used to perform grouting based on the second grouting borehole when the thickness of the target effective water-tight layer is greater than or equal to the thickness of the rock fracture.

[0123] The fourth processing module is used to determine the target borehole inclination length corresponding to the rock fracture thickness when the target effective water-tight layer thickness is less than the rock fracture thickness, and to continue to construct the second grouting borehole until the borehole inclination length of the second grouting borehole reaches the target borehole inclination length, and then to perform grouting based on the second grouting borehole.

[0124] The boundary detection device for a collapse column in this application obtains the initial boundary range of the collapse column, determines the location of at least one drilling site based on the initial boundary range, constructs boundary detection holes based on the initial boundary range of the collapse column and the location of at least one drilling site, determines the target boundary location where abnormal situations occur during the construction of the boundary detection holes, performs curve fitting based on the target boundary location to obtain a target curve, and determines the target boundary range of the collapse column based on the target curve. This device can accurately determine the development boundary of the collapse column, laying the foundation for reasonable management of the collapse column and ensuring safe production in the mine.

[0125] To implement the above embodiments, this application also proposes an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the boundary detection method for a collapsed column as described in any of the foregoing method embodiments.

[0126] To implement the above embodiments, this application also proposes a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the boundary detection method for a collapsed column as described in any of the foregoing method embodiments.

[0127] To implement the above embodiments, this application also proposes a computer program product that, when executed by an instruction processor, implements the boundary detection method for a trapped column as described in any of the foregoing method embodiments. Figure 8 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. Figure 8 The electronic device 12 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0128] like Figure 8 As shown, the electronic device 12 is represented in the form of a general-purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, memory 28, and bus 18 connecting different system components (including memory 28 and processing unit 16).

[0129] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0130] Electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0131] Memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and / or cache memory 32. Electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (… Figure 8 Not shown; usually referred to as a "hard drive".

[0132] although Figure 8 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disc drive for reading and writing to a removable non-volatile optical disc (e.g., a compact disc read-only memory (CD-ROM), a digital video disc read-only memory (DVD-ROM), or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of this disclosure.

[0133] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of this disclosure.

[0134] Electronic device 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with electronic device 12, and / or with any device that enables electronic device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, electronic device 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. Figure 8 As shown, network adapter 20 communicates with other modules of electronic device 12 via bus 18. It should be understood that, although... Figure 8 Not shown, other hardware and / or software modules may be used in conjunction with electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0135] The processing unit 16 executes various functional applications and data processing by running programs stored in the memory 28, such as implementing the boundary detection method for the collapsed column mentioned in the foregoing embodiments.

[0136] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0137] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0138] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0139] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0140] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0141] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0142] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0143] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for boundary detection of a collapse column, characterized in that, include: Obtain the initial boundary range of the collapsed column; Based on the initial boundary range of the collapse column, the location of at least one drilling site is determined; Based on the initial boundary range of the collapse column and the location of the at least one drilling site, construct boundary detection holes and determine the target boundary location where abnormal situations occur during the construction of the boundary detection holes. Based on the target boundary position, curve fitting is performed to obtain the target curve; Based on the target curve, determine the target boundary range of the collapse column; Second grouting boreholes are constructed at different layers of the collapsed column. During the construction of the second grouting boreholes, when the water inflow of the second grouting borehole reaches the target water inflow and the water pressure at the borehole opening of the second grouting borehole reaches the target water pressure, the current borehole inclination length of the second grouting borehole is obtained. The target effective aquitard thickness corresponding to the current borehole inclination length is determined based on the mapping relationship between borehole inclination length and effective aquitard thickness. When the thickness of the target effective waterproof layer is greater than or equal to the thickness of the rock fracture, grouting is performed based on the second grouting borehole; When the thickness of the target effective water-tight layer is less than the thickness of the rock fracture, the target borehole inclination length corresponding to the thickness of the rock fracture is determined, and the second grouting borehole is continued to be constructed until the borehole inclination length of the second grouting borehole reaches the target borehole inclination length, and grouting is performed based on the second grouting borehole.

2. The method according to claim 1, characterized in that, The initial boundary range of the collapse column is determined by geophysical exploration techniques; determining the location of at least one drilling site based on the initial boundary range of the collapse column includes: The number of drilling sites is determined to be at least one, and the drilling sites are determined to be located in stable coal and rock masses outside the initial boundary range of the collapse column and at a distance greater than a first threshold from the initial boundary range.

3. The method according to claim 1, characterized in that, The initial boundary range of the collapse column is determined by the exposure of the tunneling face based on the fracture development characteristics of the collapse column; Determining the location of at least one drilling site based on the initial boundary range of the collapse column includes: The number of drilling sites is determined to be at least two, and each drilling site is determined to be located in a stable coal and rock mass outside the initial boundary range of the collapse column and at a distance greater than a second threshold from the initial boundary range, and the at least two drilling sites are located on both sides of the roadway, and the distance between the at least two drilling sites is greater than or equal to a third threshold and less than or equal to a fourth threshold.

4. The method according to claim 1, characterized in that, Before constructing the boundary detection borehole based on the initial boundary range of the collapse column and the location of the at least one drilling site, the method further includes: Obtain the parameters of the water exploration borehole; Based on the initial boundary range of the collapse column, the location of the at least one drilling site, and the parameters of the water exploration borehole, the water exploration borehole is constructed. It was confirmed that no water flow occurred at the location of the water exploration borehole.

5. The method according to claim 4, characterized in that, After the construction of the water exploration borehole, the process also includes: When water gushing occurs at the location of the water exploration borehole, the stratum where the water source of the collapse column is located is obtained, wherein the stratum is determined based on the water quality test results of the water gushing out at the location of the water exploration borehole. Based on the aforementioned stratum, at a predetermined distance from the top or bottom of the coal seam, a first grouting borehole is constructed for grouting reinforcement until the water inflow at the location of the water exploration borehole disappears.

6. A boundary detection device for a collapse column, characterized in that, include: The first acquisition module is used to acquire the initial boundary range of the collapsed column; The first determining module is used to determine the location of at least one drilling site based on the initial boundary range of the collapse column; The second determining module is used to construct boundary detection holes based on the initial boundary range of the collapse column and the location of the at least one drilling site, and to determine the target boundary location where anomalies occur during the construction of the boundary detection holes. The fitting module is used to perform curve fitting based on the target boundary position to obtain the target curve; The third determining module is used to determine the target boundary range of the collapse column based on the target curve; The fourth acquisition module is used to construct the second grouting borehole at different layers of the collapsed column, and during the construction of the second grouting borehole, when it is determined that the water inflow of the second grouting borehole reaches the target water inflow and the water pressure at the borehole opening of the second grouting borehole reaches the target water pressure, acquire the current borehole inclination length of the second grouting borehole. The fifth determining module is used to determine the target effective water-tight layer thickness corresponding to the current borehole inclination length based on the mapping relationship between the borehole inclination length and the effective water-tight layer thickness. The third processing module is used to perform grouting based on the second grouting borehole when the thickness of the target effective water-proof layer is greater than or equal to the thickness of the rock fracture. The fourth processing module is used to determine the target borehole inclination length corresponding to the rock fracture thickness when the target effective water-tight layer thickness is less than the rock fracture thickness, and to continue constructing the second grouting borehole until the borehole inclination length of the second grouting borehole reaches the target borehole inclination length, and then perform grouting based on the second grouting borehole.

7. The apparatus according to claim 6, characterized in that, Also includes: The second acquisition module is used to acquire parameters of the water exploration borehole; The first processing module is used to construct water exploration boreholes based on the initial boundary range of the collapse column, the location of at least one drilling site, and the parameters of the water exploration borehole. The fourth determination module is used to determine whether there is any water inflow at the location of the water exploration borehole.

8. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the method as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method as described in any one of claims 1-5.

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