Method and device for measuring subsidence elements of a subsidence area of a coal face

Abstract

The present disclosure provides a method and device for measuring subsidence elements of a subsidence area of a coal mining face, the method comprising: setting a main measuring station and a plurality of auxiliary measuring stations at preset positions of the face; obtaining first coordinate information of the main measuring station at a first time, first height information of the auxiliary measuring stations at the first time, and first distance information between the main measuring station and the plurality of auxiliary measuring stations; obtaining second coordinate information of the main measuring station at a second time, second height information of the auxiliary measuring stations at the second time, and second distance information between the main measuring station and the plurality of auxiliary measuring stations; and determining subsidence elements of the subsidence area of the face based on the first coordinate information, the second coordinate information, the first height information, the second height information, the first distance information, and the second distance information. The present disclosure can quickly calculate a plurality of subsidence elements, improve work efficiency, and has smaller measurement error and is more consistent with the actual situation.

Description

Technical Field

[0001] This disclosure relates to the field of surface subsidence monitoring technology in coal mining subsidence areas, and in particular to a method and apparatus for measuring subsidence elements in coal mining face subsidence areas. Background Technology

[0002] According to the theory of mining subsidence, the index elements describing surface subsidence include subsidence elements, tilt elements, curvature elements, horizontal movement elements, and horizontal deformation elements. However, at present, the monitoring of surface subsidence in coal mining subsidence areas mainly adopts the method of burying observation piers and other surface movement monitoring points, and using traditional surveying instruments such as levels and total stations. In the process of obtaining subsidence elements, the following problems often exist: (1) The monitoring process is time-consuming and the monitoring cycle is long; (2) A single monitoring point can only obtain a single subsidence element, such as subsidence elements or horizontal movement elements, in a single observation; (3) Tilt requires two monitoring points to calculate, and curvature requires three monitoring points to calculate, but the distance between monitoring points is often 30-50m, or even longer. When calculating tilt and curvature, it is necessary to obtain the average value of two sets of data from three monitoring points. If the distance between monitoring points is too large, the measurement result will have a large error, or even lose its authenticity. Summary of the Invention

[0003] This disclosure aims to at least address the technical problem of large errors or even loss of authenticity in measurement results existing in the prior art.

[0004] Therefore, one objective of this disclosure is to provide a method for measuring subsidence elements in a coal mining face subsidence zone, the method comprising:

[0005] A main measuring station and multiple auxiliary measuring stations are set up at predetermined locations on the working face;

[0006] Acquire the first coordinate information of the main station at the first moment, the first altitude information of the auxiliary station at the first moment, and the first distance information between the main station and the multiple auxiliary stations;

[0007] Acquire the second coordinate information of the main station at the second time, the second altitude information of the auxiliary station at the second time, and the second distance information between the main station and the multiple auxiliary stations;

[0008] Based on the first coordinate information, the second coordinate information, the first height information, the second height information, the first distance information, and the second distance information, the subsidence elements of the working face subsidence area are determined.

[0009] In some embodiments, the first coordinate information is determined based on the spatial coordinates of the master station at the first time, and the second coordinate information is determined based on the spatial coordinates of the master station at the second time.

[0010] In some embodiments, the first altitude information is determined based on the altitude positions of the plurality of substations at the first time, and the second altitude information is determined based on the altitude positions of the plurality of substations at the second time.

[0011] In some embodiments, the first distance information is determined based on the distance between the main station and the secondary station at the first time, and the second distance information is determined based on the distance between the main station and the secondary station at the second time.

[0012] In some embodiments, the subsidence element includes at least one of a sinking element, a tilting element, a curvature element, a horizontal movement element, and a horizontal deformation element.

[0013] In some embodiments, a control station is provided on the working surface, and the horizontal movement element is determined based on the coordinates of the control station, first coordinate information, and second coordinate information.

[0014] Another objective of this disclosure is to provide a measuring device for subsidence elements in a coal mining face subsidence area, applied to the above-described method. The device includes a main measuring station and multiple auxiliary measuring stations located at the working face. The main measuring station is used to acquire the first coordinate information and the second coordinate information. The auxiliary measuring stations are used to acquire the first height information and the second height information. A measuring rod is installed on the main measuring station to acquire the first distance information and the second distance information.

[0015] In some embodiments, the main measuring station includes a first base, a main measuring rod, and a GNSS receiver. One end of the base is mounted on the working surface, and the other end of the base is provided with the main measuring rod. The GNSS receiver is mounted on the main measuring rod to obtain the first coordinate information and the second coordinate information.

[0016] In some embodiments, the auxiliary measuring station includes a second base and an auxiliary measuring rod. One end of the second base is mounted on the working surface, and the auxiliary measuring rod is disposed at the other end of the second base. The auxiliary measuring rod is provided with measurement marks along a first direction.

[0017] In some embodiments, the measuring scale is disposed along a second direction, which is perpendicular to the first direction.

[0018] In some embodiments, the distance between the main station and the plurality of auxiliary stations is 40-60 mm.

[0019] The present disclosure provides a method and apparatus for measuring subsidence elements in a coal mining face subsidence zone, which has the following advantages:

[0020] This method employs a main measuring station and multiple auxiliary measuring stations. By acquiring the first coordinate information of the main measuring station, the first elevation information of the auxiliary stations, and the first distance information between the main measuring station and the auxiliary stations at a first moment, and the second coordinate information of the main measuring station, the second elevation information of the auxiliary stations, and the second distance information between the main measuring station and the auxiliary stations at a second moment, multiple settlement elements can be quickly calculated, improving work efficiency. Furthermore, the calculation of each settlement element in this method is achieved jointly by the main measuring station and multiple auxiliary stations, resulting in smaller measurement errors and more accurately reflecting the actual situation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, 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 recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the measuring device for subsidence elements in the subsidence area of ​​the coal mining face in this embodiment of the present disclosure;

[0023] Figure 2 This is a flowchart of the steps for measuring subsidence elements in the working face subsidence area according to an embodiment of this disclosure.

[0024] Figure label:

[0025] 1. Main measuring station; 11. First base; 12. Main measuring rod; 13. GNSS receiver; 2. First auxiliary measuring station; 21. First auxiliary base; 22. First auxiliary measuring rod; 3. Second auxiliary measuring station; 31. Second auxiliary side rod; 32. Second auxiliary measuring rod; 4. Measuring ruler; 5. Measurement mark. Detailed Implementation

[0026] Various embodiments and features of this disclosure are described herein with reference to the accompanying drawings.

[0027] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this disclosure will be apparent to those skilled in the art.

[0028] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

[0029] These and other features of this disclosure will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0030] It should also be understood that although this disclosure has been described with reference to some specific examples, many other equivalent forms of this disclosure can be definitively implemented by those skilled in the art, which have the features of the claims and are therefore within the scope of protection defined herein.

[0031] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0032] Specific embodiments of this disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this disclosure, which may be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure this disclosure. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use this disclosure in a variety of substantially any suitable detailed structures.

[0033] The first embodiment of this disclosure provides a measuring device for subsidence elements in a coal mining face subsidence zone, such as... Figure 1 As shown, the device includes a main station 1 and two auxiliary stations. There is one main station 1 and two auxiliary stations, namely the first auxiliary station 2 and the second auxiliary station 3. The first auxiliary station 2 and the second auxiliary station 3 are respectively located on both sides of the main station 1.

[0034] The main measuring station 1 here includes a first base 11, a main measuring rod 12, and a GNSS receiver 13. The first base 11 is a trapezoidal structure made of cast concrete. The trapezoidal shape of the first base 11, with a larger area on its lower surface (the side closer to the working surface) and a smaller area on its lower surface (the side furthest from the working surface), helps ensure the stability of the center of gravity of the first base 11, making it less prone to tipping over. For example, the upper surface of the first base 11 has dimensions of 10cm × 10cm, and the lower surface has dimensions of 20cm × 20cm.

[0035] The first base 11 is embedded in the soil near its lower surface, while its upper surface protrudes above the ground. The portion embedded in the soil is in full contact with the soil. During coal mining operations, the portion of the first base 11 within the soil moves with the soil, resulting in better consistency with ground movement and reducing measurement errors caused by uneven contact between the first base 11 and the soil. For example, if the height of the first base 11 is 50cm, its embedded height is 45cm, and its protruding height above the ground is 5cm.

[0036] One end of the main measuring rod 12 is connected to the first base 11. The axis of the main measuring rod 12 and the axis of the first base 11 are parallel or coincident, thus ensuring the coaxiality of the main measuring rod 12 and the first base 11 and avoiding errors during measurement. At the same time, the main measuring rod 12 is perpendicular to the ground surface of the working surface to ensure the accuracy of the measurement data of the main measuring rod 12.

[0037] The main measuring rod 12 is inserted simultaneously with the pouring of the first base 11, reducing the number of connecting components between the first base 11 and the main measuring rod 12, simplifying the structure, and improving installation efficiency. For example, the main measuring rod 12 is left 10mm inside the first base 11.

[0038] Because the ground surface will subside to different distances during the mining process, the main measuring rod 12 should have an appropriate length to ensure that when measuring subsidence elements, the main measuring rod 12 still has a portion protruding from the ground surface. For example, the length of the main measuring rod 12 is 1.1m.

[0039] The cross-sectional shape of the main measuring rod 12 can be set to a circle, rectangle, polygon, or irregular shape.

[0040] The other end of the main measuring rod 12 is connected to the GNSS receiver 13 via a connector. Specifically, the connector is connected to the end of the main measuring rod 12, and the GNSS receiver 13 is detachably connected to the connector, which facilitates the installation and removal of the GNSS receiver 13.

[0041] GNSS receiver 13 is a device used to receive Global Navigation Satellite System (GNSS) signals, capable of providing position, velocity, and time information. It is used to acquire first and second coordinate information of the location of GNSS receiver 13. The first coordinate information refers to the coordinates (x0, y0, z0) of the location of GNSS receiver 13 at a first moment, and the second coordinate information refers to the coordinates (x0, y0, z0) of the location of GNSS receiver 13 at a second moment. i y i , z i ), where z0 and z i This refers to the distance between the GNSS receiver 13 and the upper surface of the first base 11 at the first and second moments.

[0042] Secondary stations are respectively set on both sides of the main station 1, specifically including a first secondary station 2 and a second secondary station 3. The first secondary station 2 and the second secondary station 3 have the same structure. The first secondary station 2 includes a first secondary base 21 and a first secondary measuring rod 22, and the second secondary station 3 includes a second secondary base 31 and a second secondary measuring rod 32. Taking the first secondary station 2 as an example, the first secondary base 21 here has the same structure and installation method as the first base 11. That is, the first secondary base 21 is set as a trapezoidal structure with a larger lower surface area and a smaller upper surface area, which helps to ensure the stability of the center of gravity of the first secondary base 21 and makes it less likely to tip over. The end of the first secondary base 21 near the lower surface is buried in the soil of the working face, and the end near the upper surface protrudes above the ground.

[0043] One end of the first auxiliary measuring rod 22 is connected to the end of the first auxiliary base 21 furthest from the ground. The axis of the first auxiliary measuring rod 22 and the axis of the first auxiliary base 21 are parallel or coincident, ensuring the coaxiality of the first auxiliary measuring rod 22 and the first auxiliary base 21 and avoiding errors during measurement. At the same time, the first auxiliary measuring rod 22 is perpendicular to the ground surface of the working surface, ensuring the accuracy of the measurement data from the first auxiliary measuring rod 22.

[0044] The first auxiliary measuring rod 22 is inserted simultaneously with the pouring of the first auxiliary base 21, reducing the number of connecting components between the first auxiliary base 21 and the first auxiliary measuring rod 22, simplifying the structure and improving installation efficiency. The length of the first auxiliary measuring rod 22 is similar to that of the main measuring rod 12, and should be of a suitable length to ensure that when measuring settlement elements, the first auxiliary measuring rod 22 still has a portion protruding above the ground surface. For example, the length of the first auxiliary measuring rod 22 is 1.1m.

[0045] The cross-sectional shape of the first measuring rod 22 can be set to a circle, rectangle, polygon, or irregular shape.

[0046] The first measuring rod 22 is provided with a measuring mark 5 extending along a first direction, which refers to the length direction of the first measuring rod 22. The measuring mark 5 on the first measuring rod 22 enables the first measuring rod 22 to measure distance, and the initial position of the measuring mark 5 is at the connection between the first measuring rod 22 and the first base 21.

[0047] Furthermore, a measuring scale 4 is provided on the main measuring rod 12. The measuring scale 4 is set along a second direction, which is perpendicular to the first direction, that is, perpendicular to the length direction of the first auxiliary measuring rod 22. The measuring scale 4 is set perpendicular to the main measuring rod 12, the first auxiliary measuring rod 22 and the second auxiliary measuring rod 32 respectively, so as to ensure that the measuring scale 4 always remains horizontal during the measurement process and improves the accuracy of the measurement.

[0048] At the first moment, the reading of the first measuring rod 22 is b.10 The reading of the second measuring rod 32 is c. 20 At the second moment, the reading of the first measuring rod 22 is b. 1i The reading of the second measuring rod 32 is c. 2i The reading of the first measuring rod 22 here refers to the reading obtained by measuring mark 5 at the intersection of measuring ruler 4 and the first measuring rod 22 on the first measuring rod 22. The degree of the second measuring rod 32 here refers to the reading obtained by measuring mark 5 at the intersection of measuring ruler 4 and the second measuring rod 32 on the second measuring rod 32.

[0049] Furthermore, at the first moment, the distance L between the main station 1 and the first auxiliary station 2 can be obtained through the measuring scale 4. 10 The distance L from the main station 1 to the second auxiliary station 3 20 At the second moment, the distance L between the main station 1 and the first auxiliary station 2 can be obtained using measuring scale 4. 1i The distance L from the main station 1 to the second auxiliary station 3 2i .

[0050] Based on the above readings, calculate each settlement element, which includes at least one of the following: subsidence element, tilt element, curvature element, horizontal movement element, and horizontal deformation element.

[0051] 1. The specific method for calculating the subsidence element is as follows:

[0052] The subsidence element reflects the subsidence distance of the subsidence area. For the working face, the tilt between two points tens of meters apart is very small, for example, 1 mm / m. For the main station 1 and the auxiliary station, it is considered that the main measuring rod 12 and the auxiliary measuring rod move horizontally and vertically within their vicinity, and their tilt is very small or even negligible. Therefore, it can be determined by the distance between the GNSS receiver 13 and the upper surface of the first base 11 at the first and second moments, and by the reading of the first auxiliary measuring rod 22 at the first moment, which is b. 10 The reading of the second measuring rod 32 is c 20 And at the second moment, the reading of the first measuring rod 22 is b. 1i The reading of the second measuring rod 32 is c 2i The subsidence elements are determined, specifically based on the following formula:

[0053]

[0054] Among them, w a This is the subsidence of main station 1, w b This is the subsidence of the first measuring station, w c This is the subsidence of the second auxiliary station 3.

[0055] 2. The tilt element reflects the degree of tilt of the subsidence area. The tilt element is calculated using the distance between the main station 1 and the auxiliary station, as well as the subsidence amount. The tilt element is obtained through the following method:

[0056] First, calculate the tilt elements between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3:

[0057] i a-b =(w a -w b ) / d1;

[0058] i b-c =(w b -w c ) / d2;

[0059] Where i a-b It is the tilt element between the main station 1 and the first auxiliary station 2, i b-c d1 and d2 are the inclination elements between the main station 1 and the second auxiliary station 3, respectively. d1 and d2 are the distances between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3, respectively.

[0060] The inclination elements are then calculated by measuring the inclination elements between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3, as shown below:

[0061] i = (i a-b +i a-c ) / 2.

[0062] Here, the tilt element of the area where the device is located is determined by calculating the average of the tilt elements of the main station 1 and the first auxiliary station 2 and the tilt element of the main station 1 and the second auxiliary station 3. This can reduce errors and improve measurement accuracy.

[0063] 3. The curvature element is determined based on the following formula:

[0064]

[0065] 4. The horizontal deformation element reflects the amount of deformation of the soil at the working face in the horizontal direction. It is calculated based on the following formula:

[0066]

[0067] Among them, L 10 It is the distance L between the main station 1 and the first auxiliary station 2 at the first moment. 20 It is the distance L between the main station 1 and the second auxiliary station 3 at the first moment. 1i L is the distance between the main station 1 and the first auxiliary station 2 at the second moment. 2iIt is the distance ε between the main station 1 and the second auxiliary station 3 at the second moment. a-b It is the horizontal deformation between the main station 1 and the first auxiliary station 2, ε a-c ε is the horizontal deformation between the main station 1 and the second auxiliary station 3, and ε is the horizontal element of the subsidence area.

[0068] Here, the horizontal deformation elements of the area where the device is located are determined by calculating the average of the horizontal deformation between the main measuring station 1 and the first auxiliary measuring station 2 and the horizontal deformation between the main measuring station 1 and the second auxiliary measuring station 3. This can reduce errors and improve measurement accuracy.

[0069] 5. The horizontal movement element reflects the horizontal movement of the soil at the working face. Specifically, the horizontal movement element is calculated based on the following formula:

[0070]

[0071] Where u is the horizontal movement feature, and (X, Y, Z) are the coordinates of a control point in the subsidence area.

[0072] A control station is set up on the working face, and the horizontal movement element is determined based on the coordinates of the control station, first coordinate information, and second coordinate information. Here, the control point refers to the coordinates of the control station near the subsidence area. The position of the control station on the working face does not change. The position coordinates of the control station are obtained through GNSS receiver 13, and the horizontal element is calculated based on these coordinates, resulting in a more accurate calculation.

[0073] The distances between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3, are 40cm-60cm. Compared with existing technologies that set the distances between stations to tens of meters, this disclosure significantly reduces the distances between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3. When calculating the average values ​​of tilt elements, curvature elements, and horizontal deformation elements, the average values ​​reflect the actual situation more accurately because the distances between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3 are very small. This avoids the calculated average values ​​deviating significantly from the actual situation due to excessively large distances between the main station 1 and the first auxiliary station 2, and between the main station 1 and the second auxiliary station 3.

[0074] For example, the distance between the main station 1 and the auxiliary station is 50mm.

[0075] Based on the same inventive concept as Embodiment 1, the second embodiment of this disclosure discloses a method for measuring subsidence elements in a coal mining face subsidence zone, such as... Figure 2 As shown, it includes:

[0076] S1: Set up main station 1 and multiple auxiliary stations at preset positions on the working face.

[0077] There is one main station 1 and two auxiliary stations, located on either side of the main station 1.

[0078] S2: Obtain the first coordinate information of the main station 1 at the first moment and the first distance information between the main station 1 and the auxiliary station.

[0079] The first coordinate information here is determined based on the coordinates of the main station 1 at the first moment, specifically by obtaining the coordinate information of the location of the GNSS receiver 13 through the GNSS receiver 13 of the main station 1.

[0080] The first distance information here is determined based on the distance between the main station 1 and the auxiliary station at the first moment, the sinking distance of the main station 1, and the sinking distance of the auxiliary station.

[0081] Specifically, the first distance information includes the following data measured at the first moment: the distance L between the main station 1 and the first auxiliary station 2 measured by the measuring scale 4. 10 The distance L between the main station 1 and the second auxiliary station 3, measured by measuring rod 4. 20 b, measured by the measuring mark 5 on the first measuring rod 22 10 and c measured by measuring mark 5 of the second measuring rod 32 20 .

[0082] S3: Obtain the second coordinate information of the main station 1 at the second time and the second distance information between the main station 1 and the auxiliary station.

[0083] The second moment here is later than the first moment.

[0084] The second distance information here is determined based on the distance between the main station 1 and the auxiliary station at the second time point, the sinking distance of the main station 1, and the sinking distance of the auxiliary station.

[0085] Specifically, the second distance information includes the following data measured at the second time point: the distance L between the main station 1 and the first auxiliary station 2 measured by the measuring scale 4. 1i The distance L between the main station 1 and the second auxiliary station 3, measured by measuring rod 4. 2i b, measured by the measuring mark 5 on the first measuring rod 22 1i and c measured by measuring mark 5 of the second measuring rod 32 2i .

[0086] The above data is obtained through steps S2 and S3, which is convenient and has a short measurement cycle.

[0087] S4: Based on the first coordinate information, the second coordinate information, the first distance information, and the second distance information, determine the subsidence elements of the coal mining subsidence area.

[0088] The settlement element includes at least one of the following: subsidence element, tilt element, curvature element, horizontal movement element, and horizontal deformation element.

[0089] Specifically, the sinking element is based on the formula. Sure;

[0090] Inclined elements are based on formula i a-b =(w a -w b ) / d1;

[0091] i b-c =(w b -w c ) / d2;

[0092] i = (i a-b +i a-c ) / 2 confirmed;

[0093] Curvature elements are based on the formula: Sure;

[0094] Horizontal deformation elements are based on formulas Sure;

[0095] Horizontal movement elements are based on formulas Sure.

[0096] This disclosure sets up a main measuring station 1 and multiple auxiliary measuring stations. By acquiring the first coordinate information of the main measuring station 1, the first height information of the auxiliary measuring stations, and the first distance information between the main measuring station 1 and the multiple auxiliary measuring stations at a first moment, and the second coordinate information of the main measuring station 1, the second height information of the auxiliary measuring stations, and the second distance information between the main measuring station 1 and the multiple auxiliary measuring stations at a second moment, multiple settlement elements can be quickly calculated, improving work efficiency. Furthermore, in this scheme, the calculation of each settlement element is obtained jointly by the main measuring station 1 and the multiple auxiliary measuring stations, resulting in smaller measurement errors and more consistent with the actual situation.

[0097] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0098] In the description of this disclosure, "first feature" and "second feature" may include one or more of the features.

[0099] In the description of this disclosure, "multiple" means two or more.

[0100] In the description of this disclosure, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0101] In the description of this disclosure, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0102] In the description of this disclosure, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. 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.

[0103] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for measuring subsidence elements in a coal mining face subsidence zone, characterized in that, include: A main measuring station and multiple auxiliary measuring stations are set up at predetermined locations on the working face; Acquire the first coordinate information of the main station at the first moment, the first altitude information of the auxiliary station at the first moment, and the first distance information between the main station and the multiple auxiliary stations; Acquire the second coordinate information of the main station at the second time, the second altitude information of the auxiliary station at the second time, and the second distance information between the main station and the multiple auxiliary stations; Based on the first coordinate information, the second coordinate information, the first height information, the second height information, the first distance information, and the second distance information, the subsidence elements of the working face subsidence area are determined; The main measuring station includes a first base, a main measuring rod, and a GNSS receiver. One end of the base is installed on the working surface, and the other end of the base is provided with the main measuring rod. The GNSS receiver is installed on the main measuring rod to obtain the first coordinate information and the second coordinate information. The auxiliary measuring station includes a second base and an auxiliary measuring rod. One end of the second base is installed on the working surface, and the auxiliary measuring rod is set at the other end of the second base. The auxiliary measuring rod is set with measurement marks along a first direction. The subsidence element includes at least one of the following: subsidence element, tilting element, curvature element, horizontal movement element, and horizontal deformation element.

2. The method for measuring subsidence elements in the subsidence area of ​​the working face according to claim 1, characterized in that, The first coordinate information is determined based on the spatial coordinates of the main measuring station at the first time, and the second coordinate information is determined based on the spatial coordinates of the main measuring station at the second time.

3. The method for measuring subsidence elements in the subsidence area of ​​the working face according to claim 1, characterized in that, The first altitude information is determined based on the altitude positions of the multiple sub-stations at the first time, and the second altitude information is determined based on the altitude positions of the multiple sub-stations at the second time.

4. The method for measuring subsidence elements in the subsidence area of ​​the working face according to claim 1, characterized in that, The first distance information is determined based on the distance between the main station and the secondary station at the first time, and the second distance information is determined based on the distance between the main station and the secondary station at the second time.

5. The method for measuring subsidence elements in the subsidence area of ​​the working face according to claim 4, characterized in that, A control station is set up on the working face, and the horizontal movement element is determined based on the coordinates of the control station, first coordinate information, and second coordinate information.

6. A measuring device for subsidence elements in a coal mining face subsidence zone, characterized in that, The method applied to any one of claims 1-5, the apparatus includes a main measuring station and a plurality of auxiliary measuring stations disposed on the working surface, the main measuring station being used to acquire the first coordinate information and the second coordinate information, the auxiliary measuring stations being used to acquire the first height information and the second height information, and a measuring rod being disposed on the main measuring station to acquire the first distance information and the second distance information.

7. The measuring device for subsidence elements in the subsidence area of ​​a coal mining face according to claim 6, characterized in that, The main measuring station includes a first base, a main measuring rod, and a GNSS receiver. One end of the base is installed on the working surface, and the other end of the base is equipped with the main measuring rod. The GNSS receiver is installed on the main measuring rod to obtain the first coordinate information and the second coordinate information. A measuring scale is installed on the main measuring rod.

8. The measuring device for subsidence elements in the subsidence area of ​​a coal mining face according to claim 7, characterized in that, The auxiliary measuring station includes a second base and an auxiliary measuring rod. One end of the second base is installed on the working surface, and the auxiliary measuring rod is installed at the other end of the second base. The auxiliary measuring rod is marked with measurement marks along a first direction.

9. The measuring device for subsidence elements in the subsidence zone of a coal mining face according to claim 8, characterized in that, The measuring scale is set along a second direction, which is perpendicular to the first direction.

Images