A method and device for determining effective air volume of a mine, a terminal device and a medium

Abstract

The application is suitable for the technical field of mine safety, and provides a method and device for determining effective air volume of a mine, a terminal equipment and a computer readable storage medium, the method comprises the following steps: acquiring an image of a to-be-measured roadway in the mine; the image is used for describing the internal condition of the to-be-measured roadway; determining a to-be-measured point of the to-be-measured roadway according to the image; determining a cross-sectional area and a cross-sectional wind speed of a roadway cross section corresponding to the to-be-measured point; and calculating the effective air volume of the to-be-measured roadway according to the cross-sectional area and the cross-sectional wind speed. Compared with the prior art of randomly determining the to-be-measured point, the to-be-measured point of the to-be-measured roadway can be accurately determined according to the image used for describing the internal condition of the to-be-measured roadway, and then the effective air volume of the to-be-measured roadway is calculated according to the cross-sectional area and the cross-sectional wind speed of the roadway cross section corresponding to the to-be-measured point, so that the accuracy of the determined effective air volume is improved.

Description

Technical Field

[0001] This application belongs to the field of mine safety technology, and in particular relates to a method, device, terminal equipment and computer-readable storage medium for determining the effective ventilation volume in a mine. Background Technology

[0002] Effective ventilation volume in a mine refers to the total amount of airflow that passes through various working locations underground (including independently ventilated mining faces, tunneling faces, and other ventilation locations) to achieve the purpose of ventilation.

[0003] Existing technologies typically determine the effective air volume in a mine by randomly selecting measurement points at various work locations and then determining the effective air volume based on the air volume obtained from these measurement points. However, the accuracy of the effective air volume determined in this way is relatively low. Summary of the Invention

[0004] This application provides a method, apparatus, terminal equipment, and computer-readable storage medium for determining the effective air volume in a mine, thereby improving the accuracy of the determined effective air volume.

[0005] In a first aspect, embodiments of this application provide a method for determining the effective ventilation volume in a mine, including:

[0006] Acquire images of a mine roadway to be tested; the images are used to describe the internal conditions of the roadway to be tested.

[0007] The test points of the tunnel to be tested are determined based on the image.

[0008] Determine the cross-sectional area and cross-sectional wind speed of the roadway section corresponding to the point to be measured;

[0009] The effective air volume of the roadway to be tested is calculated based on the cross-sectional area and the cross-sectional wind speed.

[0010] Optionally, determining the test points of the roadway based on the image includes:

[0011] Based on the image, determine the cross-sectional shape of the tunnel under test corresponding to multiple set points, and determine the variation range between the cross-sectional shapes corresponding to any two adjacent set points, thereby obtaining the variation range set corresponding to the tunnel under test.

[0012] If two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained, and the target set point is determined as the test point.

[0013] Optionally, before determining the target set point as the test point if two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, the method further includes:

[0014] Obtain the cross-sectional diameter of the roadway to be tested;

[0015] Accordingly, if two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point related to both of the two adjacent change amplitudes is obtained, and the target set point is determined as the test point, including:

[0016] If two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained.

[0017] Using the target set point as the origin, calculate the length of the first straight lane from the target set point in the first direction, and calculate the length of the second straight lane from the target set point in the second direction; the first direction is the direction from the target set point to the exit of the lane to be measured; the second direction is opposite to the first direction;

[0018] If the length of the first straight channel is a first multiple of the cross-sectional diameter, and the length of the second straight channel is a second multiple of the cross-sectional diameter, then the target set point is determined to be the point to be measured; the first multiple and the second multiple are different.

[0019] Optionally, determining the cross-sectional area of ​​the roadway section corresponding to the point to be measured includes:

[0020] Obtain the width and height of the roadway to be measured, and determine the ratio between the width and the height;

[0021] The cross-sectional area is calculated based on the width, the height, and the ratio.

[0022] Optionally, the cross-sectional area is calculated according to the following formula:

[0023]

[0024] Wherein, S represents the cross-sectional area, B represents the width, and H represents the height.

[0025] Optionally, determining the cross-sectional wind speed of the roadway section corresponding to the point to be measured includes:

[0026] The initial wind speed at the test point was collected at multiple time points using a ventilation resistance detector.

[0027] If the difference between the initial wind speed and the set wind speed at the multiple time points is within the set range, the cross-sectional wind speed is calculated based on the initial wind speed at the multiple time points.

[0028] Optionally, the effective air volume is calculated according to the following formula:

[0029] Q = (S - S0) × v;

[0030] Where Q represents the effective air volume, S represents the cross-sectional area, S0 represents the side cross-sectional area of ​​the person located at the test point, and v represents the cross-sectional wind speed.

[0031] Secondly, embodiments of this application provide a device for determining the effective ventilation volume in a mine, comprising:

[0032] The first acquisition unit is used to acquire images of the roadway to be tested in the mine; the images are used to describe the internal conditions of the roadway to be tested.

[0033] The test point determination unit is used to determine the test points of the roadway to be tested based on the image.

[0034] The cross-section determination unit is used to determine the cross-sectional area and cross-sectional wind speed of the roadway cross-section corresponding to the point to be measured.

[0035] The first calculation unit is used to calculate the effective air volume of the roadway to be tested based on the cross-sectional area and the cross-sectional wind speed.

[0036] Thirdly, embodiments of this application provide a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the effective ventilation volume of a mine as described in any of the first aspects above.

[0037] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method for determining the effective ventilation volume of a mine as described in any one of the first aspects above.

[0038] Fifthly, embodiments of this application provide a computer program product that, when run on a terminal device, enables the terminal device to execute the method for determining the effective ventilation volume in a mine as described in any of the first aspects above.

[0039] The beneficial effects of the embodiments in this application compared with the prior art are:

[0040] This application provides a method for determining the effective air volume in a mine. The method involves acquiring an image of a mine roadway to be tested; the image describes the internal conditions of the roadway; determining the test point of the roadway based on the image; determining the cross-sectional area and cross-sectional wind speed of the roadway corresponding to the test point; and calculating the effective air volume of the roadway based on the cross-sectional area and cross-sectional wind speed. Compared to the prior art of randomly determining the test point, this application can accurately determine the test point of the roadway based on the image describing the internal conditions of the roadway, and then calculate the effective air volume of the roadway based on the cross-sectional area and cross-sectional wind speed of the roadway corresponding to the test point, thereby improving the accuracy of the determined effective air volume. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a flowchart illustrating the implementation of a method for determining effective ventilation volume in a mine, as provided in an embodiment of this application.

[0043] Figure 2 This is a flowchart illustrating the implementation of a method for determining effective ventilation volume in a mine, provided in another embodiment of this application.

[0044] Figure 3 This is a flowchart illustrating the implementation of a method for determining effective ventilation volume in a mine, provided in another embodiment of this application.

[0045] Figure 4 This is a flowchart illustrating the implementation of a method for determining effective ventilation volume in a mine, provided in another embodiment of this application.

[0046] Figure 5 This is a flowchart illustrating the implementation of a method for determining effective ventilation volume in a mine, provided in another embodiment of this application.

[0047] Figure 6 This is a schematic diagram of the structure of a device for determining the effective ventilation volume in a mine, provided in an embodiment of this application.

[0048] Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Detailed Implementation

[0049] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0050] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0051] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0052] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0053] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0055] Please see Figure 1 , Figure 1This is a flowchart illustrating the implementation of a method for determining the effective ventilation volume in a mine, according to an embodiment of this application. In this embodiment, the execution entity of the method for determining the effective ventilation volume in a mine is a terminal device. The terminal device can be a laptop, computer, or similar device.

[0056] like Figure 1 As shown, a method for determining the effective ventilation volume in a mine, provided in one embodiment of this application, may include steps S101 to S104, as detailed below:

[0057] In S101, an image of the roadway to be tested in the mine is acquired; the image is used to describe the internal condition of the roadway to be tested.

[0058] In this embodiment of the application, at least one camera device is installed in the tunnel to be tested.

[0059] The camera device can take pictures of the interior of the tunnel under test to obtain images that describe the internal conditions of the tunnel.

[0060] Based on this, the terminal device can acquire images of the tunnel to be tested through a camera device.

[0061] In S102, the test points of the roadway to be tested are determined based on the image.

[0062] In this embodiment of the application, since the image obtained by the terminal device describes the internal condition of the tunnel to be tested, the terminal device can determine the internal condition of the tunnel to be tested based on the image, thereby determining the test point of the tunnel to be tested.

[0063] In one embodiment of this application, the terminal device can specifically be configured as follows: Figure 2 The points to be measured in the roadway shown in S201 to S202 are as follows:

[0064] In S201, the cross-sectional shape of the roadway to be tested corresponding to multiple set points is determined based on the image, and the variation range between the cross-sectional shapes corresponding to two adjacent set points is determined to obtain the variation range set corresponding to the roadway to be tested.

[0065] In this embodiment, the images may include multiple images, and each image may include a cross-section of the roadway to be tested, where at least one set point is located. The set point can be determined according to actual needs and is not limited here.

[0066] In practical applications, a cross-section refers to a sectional view of an object, which reveals the object's detailed internal structure when cut open.

[0067] Based on this, the terminal device can determine the cross-sectional shape of the tunnel to be tested corresponding to multiple set points of the tunnel to be tested according to the above image.

[0068] It should be noted that the terminal device can assign a corresponding number to each setting point based on the order of their locations, in order to determine the sequence of each setting point.

[0069] In this embodiment, after obtaining the cross-sectional shape of the roadway to be measured corresponding to multiple set points, the terminal device can compare the cross-sectional shapes corresponding to each pair of adjacent set points to determine the variation range between the cross-sectional shapes corresponding to each pair of adjacent set points.

[0070] Based on this, the terminal device can obtain the set of variation amplitudes corresponding to the roadway under test. This set of variation amplitudes includes the variation amplitudes between the cross-sectional shapes of any two adjacent set points from a plurality of set points.

[0071] After obtaining the set of variation amplitudes corresponding to the roadway to be measured, the terminal device can compare each variation amplitude in the set with a preset threshold. The preset threshold can be determined according to actual needs and is not restricted here.

[0072] In one embodiment of this application, when the terminal device detects that two adjacent change amplitudes in the change amplitude set are both less than a set threshold, it can execute step S202.

[0073] In another embodiment of this application, when the terminal device detects that any two adjacent variation amplitudes in the variation amplitude set are not both less than a set threshold, it indicates that the cross-sectional shape of the test tunnel corresponding to the multiple set points in the test tunnel is too different. In other words, the internal structure of the test tunnel is complex and the shape is varied, making it impossible to measure the effective air volume. Therefore, the terminal device needs to perform steps S101 to S104 on the next test tunnel.

[0074] In S202, if two adjacent change amplitudes in the change amplitude set are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained, and the target set point is determined as the test point.

[0075] In this embodiment, when the terminal device detects that two adjacent variation amplitudes in the variation amplitude set are both less than a set threshold, it indicates that the cross-sectional shape of the test tunnel corresponding to multiple set points in the test tunnel is uniform, indicating the internal structural variation law of the test tunnel, and the effective air volume can be measured. Therefore, the terminal device can obtain the target set point that is related to the above two adjacent variation amplitudes and determine the target set point as the test point of the test tunnel.

[0076] It should be noted that since any change range is obtained from the cross-sectional shape corresponding to any two adjacent set points, that is to say, a change range is related to two adjacent set points.

[0077] Based on this, among two adjacent set points that are respectively related to two adjacent change amplitudes, there exists a target set point that is related to both of the two adjacent change amplitudes.

[0078] In S103, the cross-sectional area and cross-sectional wind speed of the roadway section corresponding to the test point are determined.

[0079] In this embodiment of the application, after determining the test point of the roadway to be tested, the terminal device needs to determine the cross-sectional area and cross-sectional wind speed of the roadway section corresponding to the test point.

[0080] In one embodiment of this application, the terminal device can specifically be configured as follows: Figure 3 The cross-sectional area of ​​the roadway section corresponding to the point to be measured, as shown in S301 to S302, is detailed below:

[0081] In S301, the width and height of the roadway to be measured are obtained, and the ratio between the width and the height is determined.

[0082] In one implementation of this embodiment, the terminal device can obtain the width and height of the tunnel to be measured in real time through a laser rangefinder wirelessly connected to it.

[0083] In S302, the cross-sectional area is calculated based on the width, the height, and the ratio.

[0084] In one embodiment of this application, the terminal device can specifically calculate the cross-sectional area of ​​the roadway corresponding to the point to be measured using the following formula:

[0085]

[0086] Where S represents the cross-sectional area of ​​the roadway corresponding to the point to be measured, B represents the width of the roadway to be measured, and H represents the height of the roadway to be measured.

[0087] In another embodiment of this application, the terminal device can specifically be implemented through, as shown in the example below. Figure 4 The cross-sectional wind speeds of the roadway sections corresponding to the measured points, as shown in S401 to S402, are detailed below:

[0088] In S401, the initial wind speed at the test point is collected at multiple time points using a ventilation resistance detector.

[0089] In this embodiment, the terminal device needs to collect the initial wind speed of the test point once at each of the multiple time points, that is, collect the initial wind speed of the test point once at each time point.

[0090] It should be noted that, in order to improve the accuracy of the cross-sectional wind speed of the roadway section corresponding to the test point obtained in subsequent calculations, the terminal equipment can determine the number of multiple time points greater than or equal to 3.

[0091] In one implementation of this embodiment, in order to improve the measurement accuracy, the terminal device can control the ventilation resistance detector to move uniformly on the roadway cross-section corresponding to the test point, so as to collect the initial wind speed at multiple time points on the roadway cross-section, and determine the initial wind speed at multiple time points on the roadway cross-section as the initial wind speed at the test point at multiple time points.

[0092] It should be noted that when the terminal equipment controls the ventilation resistance detector to move uniformly on the roadway cross-section corresponding to the test point, the ventilation resistance detector needs to be perpendicular to the airflow direction.

[0093] In this embodiment, after obtaining the initial wind speed at the test point at multiple time points, the terminal device can calculate the differences between each initial wind speed and a set wind speed, and compare each difference with a set range. The set wind speed can be determined according to actual needs and is not limited here.

[0094] In some possible embodiments, the setting range can be determined based on the set wind speed and the setting error. The setting error can be determined according to actual needs and is not limited here; for example, the setting error can be ±5%.

[0095] Therefore, the setting range = setting wind speed * setting error.

[0096] For example, assuming the wind speed is set to 10 and the error is ±5%, the setting range is: [-0.5, +0.5].

[0097] In one embodiment of this application, when the terminal device detects that the difference between the initial wind speed and the set wind speed at multiple time points is within the set range, it can execute step S402.

[0098] In another embodiment of this application, when the terminal device detects that the difference between the initial wind speed and the set wind speed at multiple time points is not within the set range, it indicates that the initial wind speed of the test point at multiple time points does not meet the requirements. Therefore, the terminal device needs to return to step S501 until the difference between the initial wind speed and the set wind speed at multiple time points is within the set range.

[0099] In S402, if the difference between the initial wind speed and the set wind speed at the multiple time points is within the set range, the cross-sectional wind speed is calculated based on the initial wind speed at the multiple time points.

[0100] In this embodiment, when the terminal device detects that the difference between the initial wind speed and the set wind speed at multiple time points is within the set range, it indicates that the initial wind speed of the test point at multiple time points meets the requirements. Therefore, the terminal device can calculate the cross-sectional wind speed of the roadway section corresponding to the test point based on the initial wind speed at multiple time points.

[0101] In one implementation of this embodiment, the terminal device can calculate the average wind speed between initial wind speeds at multiple time points and determine the average wind speed as the cross-sectional wind speed of the roadway section corresponding to the point to be measured.

[0102] In another implementation of this embodiment, the terminal device can discard the maximum and minimum values ​​of the initial wind speed at multiple time points, calculate the average wind speed value of the initial wind speed excluding the maximum and minimum values, and determine the average wind speed value as the cross-sectional wind speed of the roadway section corresponding to the measuring point.

[0103] In S104, the effective air volume of the roadway to be tested is calculated based on the cross-sectional area and the cross-sectional wind speed.

[0104] In one embodiment of this application, the terminal device can specifically calculate the effective air volume of the roadway to be measured according to the following formula:

[0105] Q = (S - S0) × v;

[0106] Where Q represents the effective air volume of the roadway to be measured, S represents the cross-sectional area of ​​the roadway section corresponding to the point to be measured, S0 represents the cross-sectional area of ​​the person located at the point to be measured, and v represents the cross-sectional wind speed of the roadway section corresponding to the point to be measured.

[0107] As can be seen from the above, the method for determining the effective air volume in a mine provided in this application involves acquiring an image of a roadway to be tested in the mine; the image is used to describe the internal conditions of the roadway; the test point of the roadway is determined based on the image; the cross-sectional area and cross-sectional wind speed of the roadway corresponding to the test point are determined; and the effective air volume of the roadway is calculated based on the cross-sectional area and cross-sectional wind speed. Compared with the prior art of randomly determining the test point, this application can accurately determine the test point of the roadway based on the image used to describe the internal conditions of the roadway, and then calculate the effective air volume of the roadway based on the cross-sectional area and cross-sectional wind speed of the roadway corresponding to the test point, thereby improving the accuracy of the determined effective air volume.

[0108] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0109] In one embodiment of this application, to ensure stable airflow at the test point, the test point should be located in a straight section of the roadway to be tested. Therefore, please refer to [link to relevant documentation]. Figure 5 , Figure 5 This is a flowchart illustrating the implementation of a method for determining effective ventilation in a mine, provided in another embodiment of this application. Relative to... Figure 2 In this embodiment, the provided method may include step S501 before step S202, and step S202 may specifically include S502 to S504, as detailed below:

[0110] In S501, the cross-sectional diameter of the roadway to be tested is obtained.

[0111] In S502, if two adjacent change amplitudes in the change amplitude set are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained.

[0112] In S503, taking the target set point as the origin, the length of the first straight lane from the target set point in the first direction is calculated, and the length of the second straight lane from the target set point in the second direction is calculated; the first direction is the direction from the target set point to the exit of the lane to be tested; the second direction is opposite to the first direction.

[0113] In this embodiment, after obtaining the lengths of the first and second straight lanes, the terminal device can compare the lengths of the first and second straight lanes with the cross-sectional diameter of the lane to be measured.

[0114] In one embodiment of this application, when the terminal device detects that the length of the first straight channel is a first multiple of the cross-sectional diameter of the channel to be measured, and the length of the second straight channel is a second multiple of the cross-sectional diameter of the channel to be measured, it can execute step S504. The first multiple and the second multiple are different. For example, the first multiple can be 3 times, and the second multiple can be 2 times.

[0115] In another embodiment of this application, when the terminal device detects that the length of the first straight lane is not a first multiple of the cross-sectional diameter of the lane to be measured, or the length of the second straight lane is not a second multiple of the cross-sectional diameter of the lane to be measured, it indicates that the length of the straight lane at the test point is insufficient, resulting in unstable airflow at the test point. Therefore, the terminal device needs to discard the above-mentioned target setting point and redetermine the target setting point of the lane to be measured.

[0116] In S504, if the length of the first straight channel is a first multiple of the cross-sectional diameter, and the length of the second straight channel is a second multiple of the cross-sectional diameter, then the target set point is determined to be the point to be measured; the first multiple and the second multiple are different.

[0117] In this embodiment, when the terminal device detects that the length of the first straight lane is a first multiple of the cross-sectional diameter of the lane to be tested, and the length of the second straight lane is a second multiple of the cross-sectional diameter of the lane to be tested, it indicates that the length of the straight lane at the test point is sufficient, that is, the airflow at the test point is stable. Therefore, the terminal device can determine the above-mentioned target setting point as the test point of the lane to be tested.

[0118] As can be seen from the above, the method for determining the effective air volume in a mine provided in this embodiment obtains the cross-sectional diameter of the roadway to be measured; if two adjacent variation amplitudes within a range are both less than a set threshold, a target set point related to both adjacent variation amplitudes is obtained; using the target set point as the origin, the length of the first straight roadway from the target set point in a first direction is calculated, and the length of the second straight roadway from the target set point in a second direction is calculated; the first direction is the direction from the target set point to the outlet of the roadway to be measured; the second direction is opposite to the first direction; if the length of the first straight roadway is a first multiple of the cross-sectional diameter, and the length of the second straight roadway is a second multiple of the cross-sectional diameter, then the target set point is determined as the point to be measured; the first multiple and the second multiple are different. The method provided in this embodiment can ensure stable airflow at the point to be measured, thereby further improving the accuracy of determining the effective air volume of the roadway to be measured.

[0119] Corresponding to the method for determining the effective ventilation volume in a mine described in the above embodiments, Figure 6 This diagram illustrates a structural block diagram of a device for determining the effective ventilation volume in a mine, as provided in an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown. (Refer to...) Figure 6 The effective ventilation volume determination device 600 for this mine includes: a first acquisition unit 61, a target point determination unit 62, a cross-section determination unit 63, and a first calculation unit 64. Wherein:

[0120] The first acquisition unit 61 is used to acquire images of the roadway to be tested in the mine; the images are used to describe the internal conditions of the roadway to be tested.

[0121] The test point determination unit 62 is used to determine the test points of the roadway to be tested based on the image.

[0122] The cross-section determination unit 63 is used to determine the cross-sectional area and cross-sectional wind speed of the roadway cross-section corresponding to the test point.

[0123] The first calculation unit 64 is used to calculate the effective air volume of the roadway to be tested based on the cross-sectional area and the cross-sectional wind speed.

[0124] In one embodiment of this application, the test point determination unit 62 specifically includes: an amplitude determination unit and a second acquisition unit. Wherein:

[0125] The amplitude determination unit is used to determine the cross-sectional shape of the tunnel to be tested corresponding to multiple set points of the tunnel to be tested based on the image, and to determine the variation amplitude between the cross-sectional shapes corresponding to two adjacent set points among the multiple set points, so as to obtain the variation amplitude set corresponding to the tunnel to be tested.

[0126] The second acquisition unit is used to acquire a target set point that is related to both of the two adjacent change amplitudes if both of the two adjacent change amplitudes in the change amplitude set are less than a set threshold, and to determine the target set point as the test point.

[0127] In one embodiment of this application, the mine effective ventilation volume determination device 600 further includes: a third acquisition unit; correspondingly, the second acquisition unit specifically includes: a fourth acquisition unit, a second calculation unit, and a measurement point determination subunit. Wherein:

[0128] The third acquisition unit is used to acquire the cross-sectional diameter of the roadway to be tested.

[0129] The fourth acquisition unit is used to acquire a target set point that is related to both of the two adjacent change amplitudes if both of the two adjacent change amplitudes in the change amplitude set are less than a set threshold.

[0130] The second calculation unit is used to calculate the length of the first straight lane from the target set point in the first direction, and the length of the second straight lane from the target set point in the second direction, with the target set point as the origin; the first direction is the direction from the target set point to the exit of the lane to be measured; the second direction is opposite to the first direction.

[0131] The test point determination subunit is used to determine the target set point as the test point if the length of the first straight alley is a first multiple of the cross-sectional diameter and the length of the second straight alley is a second multiple of the cross-sectional diameter; the first multiple and the second multiple are different.

[0132] In one embodiment of this application, the cross-section determination unit 63 specifically includes: a fifth acquisition unit and a third calculation unit. Wherein:

[0133] The fifth acquisition unit is used to acquire the width and height of the roadway to be measured, and to determine the ratio between the width and the height.

[0134] The third calculation unit is used to calculate the cross-sectional area based on the width, the height, and the ratio.

[0135] In one embodiment of this application, the cross-sectional area is calculated according to the following formula:

[0136]

[0137] Wherein, S represents the cross-sectional area, B represents the width, and H represents the height.

[0138] In one embodiment of this application, the cross-section determination unit 63 specifically includes: an acquisition unit and a fourth calculation unit. Wherein:

[0139] The data acquisition unit is used to acquire the initial wind speed of the test point at multiple time points using a ventilation resistance detector.

[0140] The fourth calculation unit is used to calculate the cross-sectional wind speed based on the initial wind speed at the multiple time points if the difference between the initial wind speed and the set wind speed at the multiple time points is within the set range.

[0141] In one embodiment of this application, the effective air volume is calculated according to the following formula:

[0142] Q = (S - S0) × v;

[0143] Where Q represents the effective air volume, S represents the cross-sectional area, S0 represents the side cross-sectional area of ​​the person located at the test point, and v represents the cross-sectional wind speed.

[0144] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0145] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments 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. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0146] Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Figure 7 As shown, the terminal device 7 of this embodiment includes: at least one processor 70 ( Figure 7(Only one is shown) a processor, a memory 71, and a computer program 72 stored in the memory 71 and executable on the at least one processor 70, which, when executing the computer program 72, implements the steps in the embodiments of the methods for determining the effective ventilation volume of any of the mines described above.

[0147] The terminal device may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art will understand that... Figure 7 The example of terminal device 7 is merely an illustration and does not constitute a limitation on terminal device 7. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0148] The processor 70 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0149] In some embodiments, the memory 71 may be an internal storage unit of the terminal device 7, such as the RAM of the terminal device 7. In other embodiments, the memory 71 may be an external storage device of the terminal device 7, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the terminal device 7. Furthermore, the memory 71 may include both internal and external storage units of the terminal device 7. The memory 71 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 71 can also be used to temporarily store data that has been output or will be output.

[0150] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0151] This application provides a computer program product that, when run on a terminal device, enables the terminal device to implement the steps described in the various method embodiments above.

[0152] 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, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0153] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0154] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for determining the effective ventilation volume in a mine, characterized in that, include: Acquire images of the tunnel to be tested in the mine; The image is used to describe the internal condition of the tunnel under test; The test points of the tunnel to be tested are determined based on the image. Determine the cross-sectional area and cross-sectional wind speed of the roadway section corresponding to the point to be measured; The effective air volume of the roadway to be tested is calculated based on the cross-sectional area and the cross-sectional wind speed. The step of determining the test points of the roadway to be tested based on the image includes: Based on the image, determine the cross-sectional shape of the tunnel under test corresponding to multiple set points, and determine the variation range between the cross-sectional shapes corresponding to any two adjacent set points to obtain the variation range set corresponding to the tunnel under test. If two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained, and the target set point is determined as the test point.

2. The method for determining the effective ventilation volume in a mine as described in claim 1, characterized in that, Before determining the target set point as the test point if two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, the method further includes: Obtain the cross-sectional diameter of the roadway to be tested; Accordingly, if two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point related to both of the two adjacent change amplitudes is obtained, and the target set point is determined as the test point, including: If two adjacent change amplitudes in the set of change amplitudes are both less than a set threshold, then a target set point that is related to both of the two adjacent change amplitudes is obtained. Using the target set point as the origin, calculate the length of the first straight lane from the target set point in the first direction, and calculate the length of the second straight lane from the target set point in the second direction; the first direction is the direction from the target set point to the exit of the lane to be measured; the second direction is opposite to the first direction; If the length of the first straight channel is a first multiple of the cross-sectional diameter, and the length of the second straight channel is a second multiple of the cross-sectional diameter, then the target set point is determined to be the point to be measured; the first multiple and the second multiple are different.

3. The method for determining the effective ventilation volume in a mine as described in claim 1, characterized in that, Determining the cross-sectional area of ​​the roadway section corresponding to the point to be measured includes: Obtain the width and height of the roadway to be measured, and determine the ratio between the width and the height; The cross-sectional area is calculated based on the width, the height, and the ratio.

4. The method for determining the effective ventilation volume in a mine as described in claim 3, characterized in that, The cross-sectional area is calculated using the following formula: ； Wherein, S represents the cross-sectional area, B represents the width, and H represents the height.

5. The method for determining the effective ventilation volume in a mine as described in claim 1, characterized in that, Determining the cross-sectional wind speed of the roadway section corresponding to the point to be measured includes: The initial wind speed at the test point was collected at multiple time points using a ventilation resistance detector. If the difference between the initial wind speed and the set wind speed at the multiple time points is within the set range, the cross-sectional wind speed is calculated based on the initial wind speed at the multiple time points.

6. The method for determining the effective ventilation volume in a mine as described in any one of claims 1-5, characterized in that, The effective air volume is calculated according to the following formula: ； Where Q represents the effective air volume, and S represents the cross-sectional area. v represents the cross-sectional area of ​​the person's side at the point to be measured, and v represents the wind speed at the cross-section.

7. A device for determining the effective ventilation volume in a mine, characterized in that, include: The first acquisition unit is used to acquire images of the roadway to be measured in the mine. The image is used to describe the internal condition of the tunnel under test; The test point determination unit is used to determine the test points of the roadway to be tested based on the image. The cross-section determination unit is used to determine the cross-sectional area and cross-sectional wind speed of the roadway cross-section corresponding to the point to be measured. The first calculation unit is used to calculate the effective air volume of the roadway to be tested based on the cross-sectional area and the cross-sectional wind speed. The unit for determining the point to be measured specifically includes: The amplitude determination unit is used to determine the cross-sectional shape of the tunnel to be tested corresponding to multiple set points of the tunnel to be tested based on the image, and to determine the variation amplitude between the cross-sectional shapes corresponding to two adjacent set points among the multiple set points, so as to obtain the variation amplitude set corresponding to the tunnel to be tested. The second acquisition unit is used to acquire a target set point that is related to both of the two adjacent change amplitudes if both of the two adjacent change amplitudes in the change amplitude set are less than a set threshold, and to determine the target set point as the test point.

8. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method for determining the effective ventilation volume in a mine as described in any one of claims 1 to 6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the method for determining the effective ventilation volume in a mine as described in any one of claims 1 to 6.

Images