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

Abstract

The invention provides a method and a device for measuring subsidence elements of a subsidence area of a coal face. The method comprises the following steps: arranging a main observation station and a plurality of auxiliary observation stations at preset positions of the coal face; obtaining first coordinate information of the main observation station at a first moment, first height information of the auxiliary observation stations at the first moment and first distance information between the main observation station and the multiple auxiliary observation stations; acquiring second coordinate information of the main observation station at a second moment, second height information of the auxiliary observation stations at the second moment and second distance information between the main observation station and the auxiliary observation stations; and 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, determining subsidence elements of the working face subsidence area. According to the invention, a plurality of subsidence elements can be rapidly calculated, the working efficiency is improved, the error of the measurement result is small, and the real situation is better met.

Description

Technical Field

[0001] The present invention relates to the technical field of surface subsidence monitoring in coal mining subsidence areas, and in particular to a method and device for measuring subsidence elements in a coal mining working face subsidence area. Background Art

[0002] According to mining subsidence theory, the indicators describing surface subsidence include sinking elements, tilting elements, curvature elements, horizontal movement elements, and horizontal deformation elements. However, at present, surface subsidence monitoring in coal mining subsidence areas is mainly carried out by burying surface movement monitoring points such as observation piers and using traditional measuring 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 observation at a single monitoring point can only obtain a single subsidence element, such as sinking elements or horizontal movement elements; (3) Inclination 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 inclination 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] The present disclosure aims to at least solve the technical problem in the prior art that the measurement results have large errors or even lose authenticity.

[0004] To this end, one purpose of the present disclosure is to provide a method for measuring subsidence elements of a subsidence area of ​​a coal mining working face, the method for measuring subsidence elements of a subsidence area of ​​a coal mining working face comprising:

[0005] A main measuring station and multiple auxiliary measuring stations are set up at preset positions on the working surface;

[0006] Acquire first coordinate information of the main measuring station at a first moment, first height information of the auxiliary measuring station at a first moment, and first distance information between the main measuring station and a plurality of the auxiliary measuring stations;

[0007] Acquire second coordinate information of the main measuring station at a second moment, second height information of the auxiliary measuring station at the second moment, and second distance information between the main measuring station and the plurality of auxiliary measuring 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 primary survey station at the first moment, and the second coordinate information is determined based on the spatial coordinates of the secondary survey station at the second moment.

[0010] In some embodiments, the first height information is determined based on the height positions of the plurality of the secondary measuring stations at the first moment, and the second height information is determined based on the height positions of the plurality of the secondary measuring stations at the second moment.

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

[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, the first coordinate information and the second coordinate information.

[0014] Another object of the present disclosure is to propose a device for measuring subsidence elements in a subsidence area of ​​a coal mining working face, which is applied to the above-mentioned method. The device includes a main measuring station and multiple auxiliary measuring stations arranged on the working face. The main measuring station is used to obtain the first coordinate information and the second coordinate information, and the auxiliary measuring station is used to obtain the first height information and the second height information. A measuring rod is arranged on the main measuring station to obtain 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 installed on the working surface, and the other end of the base is provided with the main measuring rod. The GNSS receiver is provided 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 installed on the working surface, the other end of the second base is provided with the auxiliary measuring rod, and the auxiliary measuring rod is provided with measurement marks along the first direction.

[0017] In some embodiments, the ruler is arranged along a second direction, and the second direction is perpendicular to the first direction.

[0018] In some embodiments, the distances between the main measuring station and the plurality of the auxiliary measuring stations are 40-60 mm respectively.

[0019] The present disclosure provides a method and device for measuring subsidence elements in a subsidence area of ​​a coal mining working face, which has the following beneficial effects:

[0020] The present disclosure sets a main measuring station and multiple auxiliary measuring stations, and can quickly calculate multiple subsidence elements by obtaining the first coordinate information of the main measuring station at the first moment, the first height information of the auxiliary measuring station, and the first distance information between the main measuring station and the multiple auxiliary measuring stations, as well as the second coordinate information of the main measuring station at the second moment, the second height information of the auxiliary measuring station, and the second distance information between the main measuring station and the multiple auxiliary measuring stations, thereby improving work efficiency. At the same time, in the present solution, each subsidence element is calculated by jointly obtaining the main measuring station and the multiple auxiliary measuring stations, and the error of the measurement result is small, which is more in line with the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of a device for measuring subsidence elements of a subsidence area of ​​a coal mining working face in an embodiment of the present disclosure;

[0023] Figure 2 It is a flow chart of the steps of the method for measuring the subsidence elements of the working face subsidence area in the embodiment of the present disclosure.

[0024] Reference numerals:

[0025] 1. Main survey station; 11. First pedestal; 12. Main survey rod; 13. GNSS receiver; 2. First sub-survey station; 21. First sub-survey station; 22. First sub-survey rod; 3. Second sub-survey station; 31. Second sub-side rod; 32. Second sub-survey rod; 4. Measuring ruler; 5. Measuring mark. DETAILED DESCRIPTION

[0026] Various aspects and features of the present disclosure are described herein with reference to the drawings.

[0027] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

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

[0029] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0030] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features of the claims and are therefore within the scope of protection defined thereby.

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

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

[0033] The first embodiment of the present disclosure provides a device for measuring the subsidence elements of a subsidence area of ​​a coal mining working face, such as Figure 1 As shown, the device includes a main measuring station 1 and a subsidiary measuring station, wherein the main measuring station 1 is provided with one, and the subsidiary measuring stations are provided with two, namely a first subsidiary measuring station 2 and a second subsidiary measuring station 3, wherein the first subsidiary measuring station 2 and the second subsidiary measuring station 3 are respectively provided on both sides of the main measuring 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 cast with concrete. The first base 11 is set as a trapezoidal structure, and its lower surface (the side close to the working surface) has a larger area, and the lower surface (the side away from the working surface) has a smaller area, which is conducive to ensuring the stability of the center of gravity of the first base 11 and making it not easy to tip over. For example, the specifications of the upper surface of the first base 11 are 10cm×10cm, and the specifications of the lower surface of the first base 11 are 20cm×20cm.

[0035] The end of the first base 11 close to the lower surface is buried inside the soil of the working surface, and the end close to the upper surface is exposed to the surface. The part buried inside the soil is in full contact with the soil. During the coal mining operation on the working surface, the part of the first base 11 in the soil moves with the soil, and the consistency with the movement of the land is better, thereby reducing the measurement error caused by the uneven fit between the first base 11 and the soil. For example: the height of the first base 11 is 50cm, the height buried in the soil is 45cm, and the height exposed to the surface is 5cm.

[0036] One end of the main measuring rod 12 is connected to the first base 11, wherein the axis of the main measuring rod 12 and the axis of the first base 11 are parallel to or coincide with each other, thereby ensuring the coaxiality of the main measuring rod 12 and the first base 11 to avoid errors during measurement. At the same time, the main measuring rod 12 is perpendicular to the surface of the working face to ensure the accuracy of the measurement data of the main measuring rod 12.

[0037] The main measuring rod 12 is inserted while the first base 11 is cast, which reduces the connection components between the first base 11 and the main measuring rod 12, making the structure simpler and improving the installation efficiency. For example, the main measuring rod 12 is left inside the first base 11 by 10 mm.

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

[0039] The cross-sectional shape of the main measuring rod 12 here can be set to be circular, rectangular, polygonal or irregular.

[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 installation and removal of the GNSS receiver 13 .

[0041] The GNSS receiver 13 is a device for receiving a global navigation satellite system (GNSS) signal, and can provide position, speed and time information. The GNSS receiver 13 is used to obtain first coordinate information and second coordinate information of the location of the GNSS receiver 13. The first coordinate information refers to the coordinates (x0, y0, z0) of the location of the GNSS receiver 13 at the first moment, and the second coordinate information refers to the coordinates (x0, y0, z0) of the location of the GNSS receiver 13 at the second moment. i ,y i , z i ), where z0 and z i It refers to the distance between the GNSS receiver 13 and the upper surface of the first base 11 at the first moment and the second moment.

[0042] The auxiliary measuring stations are respectively arranged on both sides of the main measuring station 1, specifically, they include the first auxiliary measuring station 2 and the second auxiliary measuring station 3, the structures of the first auxiliary measuring station 2 and the second auxiliary measuring station 3 are the same, wherein the first auxiliary measuring station 2 includes the first auxiliary base 21 and the first auxiliary measuring rod 22, and the second auxiliary measuring station 3 includes the second auxiliary base 31 and the second auxiliary measuring rod 32. Taking the first auxiliary measuring station 2 as an example for explanation, the structure and installation method of the first auxiliary base 21 are the same as those of the first base 11. That is, the first auxiliary base 21 is arranged as a trapezoidal structure, the lower surface area of ​​which is larger and the upper surface area is smaller, which is conducive to ensuring the stability of the center of gravity of the first auxiliary base 21 and making it not easy to tip over. The end of the first auxiliary base 21 close to the lower surface is buried in the soil of the working surface, and the end close to the upper surface is exposed to the surface.

[0043] One end of the first sub-measuring rod 22 is connected to the end of the first sub-base 21 away from the ground surface, wherein the axis of the first sub-measuring rod 22 and the axis of the first sub-base 21 are parallel to or coincide with each other, thereby ensuring the coaxiality of the first sub-measuring rod 22 and the first sub-base 21 to avoid errors during measurement. At the same time, the first sub-measuring rod 22 is perpendicular to the ground surface of the working face, thereby ensuring the accuracy of the measurement data of the first sub-measuring rod 22.

[0044] The first auxiliary measuring rod 22 is inserted while pouring the first auxiliary base 21, reducing the connecting components between the first auxiliary base 21 and the first auxiliary measuring rod 22, making the structure simpler and improving the installation efficiency. The length of the first auxiliary measuring rod 22 is similar to that of the main measuring rod 12, and should have a suitable length to ensure that the first auxiliary measuring rod 22 still has a part leaking out of the ground when measuring the subsidence element. For example, the length of the first auxiliary measuring rod 22 is 1.1m.

[0045] The cross-sectional shape of the first auxiliary measuring rod 22 can be set to be circular, rectangular, polygonal or irregular.

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

[0047] Furthermore, a measuring ruler 4 is provided on the main measuring rod 12, and the measuring ruler 4 is arranged along a second direction, where the second direction is perpendicular to the first direction, that is, perpendicular to the length direction of the first auxiliary measuring rod 22, and the measuring ruler 4 is respectively perpendicular to the main measuring rod 12, the first auxiliary measuring rod 22 and the second auxiliary measuring rod 32 to ensure that the measuring ruler 4 always maintains a horizontal state during the measurement process, thereby improving the accuracy of the measurement.

[0048] Among them, at the first moment, the reading of the first measuring rod 22 is b10 , 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 pair of measuring rods 22 here refers to the reading obtained by measuring the mark 5 at the intersection of the measuring ruler 4 and the first pair of measuring rods 22 on the first pair of measuring rods 22, and the degree of the second pair of measuring rods 32 here refers to the reading obtained by measuring the mark 5 at the intersection of the measuring ruler 4 and the second pair of measuring rods 32 on the second pair of measuring rods 32.

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

[0050] Through the above readings, various settlement elements are calculated, wherein the settlement elements include at least one of sinking elements, tilting elements, curvature elements, horizontal movement elements and horizontal deformation elements.

[0051] 1. The specific method of calculating the sinking elements is as follows:

[0052] The sinking factor reflects the sinking distance of the subsidence area. For the working surface, the inclination between two points tens of meters apart is very small, for example, 1mm / m. For the main measuring station 1 and the auxiliary measuring station, it is considered that the main measuring rod 12 and the auxiliary measuring rod are moving in the horizontal direction and the vertical direction in the vicinity thereof, and the inclination is very small or even negligible. Therefore, the distance between the GNSS receiver 13 and the upper surface of the first base 11 at the first moment and the second moment, and the reading of the first auxiliary measuring rod 22 at the first moment 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 , determine the sinking factor. Specifically, the sinking factor is determined based on the following formula:

[0053]

[0054] Among them, w a is the subsidence of the main measuring station 1, w b is the sinking amount of the first auxiliary station 2, w c is the subsidence of the second auxiliary station 3.

[0055] 2. The tilt factor reflects the tilt degree of the subsidence area. The tilt factor is calculated by the distance between the main measuring station 1 and the auxiliary measuring station and the amount of subsidence. The calculation of the tilt factor is obtained by 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 is the tilt element between the main station 1 and the first auxiliary station 2, i b-c is the inclination element between the main station 1 and the second auxiliary station 3, 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 tilt element is then calculated by calculating the tilt element between the main measuring station 1 and the first auxiliary measuring station 2 and the tilt element between the main measuring station 1 and the second auxiliary measuring 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 value of the tilt element between the main measuring station 1 and the first auxiliary measuring station 2 and the tilt element between the main measuring station 1 and the second auxiliary measuring station 3, which can reduce errors and improve measurement accuracy.

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

[0064]

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

[0066]

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

[0068] Here, the horizontal deformation element of the area where the device is located is determined by calculating the average value 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, which can reduce errors and improve measurement accuracy.

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

[0070]

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

[0072] The working surface is provided with a control station, and the horizontal movement element is determined based on the coordinates of the control station, the first coordinate information, and the second coordinate information. The control point here refers to the coordinates of the control station near the subsidence area, and the position of the control station in the working surface will not change. The position coordinates of the control station are obtained by the GNSS receiver 13, and the horizontal element is calculated based on this, and the calculation result is more accurate.

[0073] Here, the distance between the main measuring station 1 and the first auxiliary measuring station 2, and the distance between the main measuring station 1 and the second auxiliary measuring station 3 is 40cm-60cm. Compared with the prior art that sets the distance between each measuring station to several tens of meters, the distance between the main measuring station 1 and the first auxiliary measuring station 2, and the distance between the main measuring station 1 and the second auxiliary measuring station 3 are greatly reduced in the present disclosure. When calculating the average value of the tilt element, the curvature element and the horizontal deformation element, since the distance between the main measuring station 1 and the first auxiliary measuring station 2, and the distance between the main measuring station 1 and the second auxiliary measuring station 3 is very small, the result reflected by the average value is more in line with the actual situation, and the calculated average value will not be far from the actual situation due to the excessive distance between the main measuring station 1 and the first auxiliary measuring station 2, and the distance between the main measuring station 1 and the second auxiliary measuring station 3.

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

[0075] Based on the same inventive concept as the first embodiment, the second embodiment of the present disclosure discloses a method for measuring the subsidence elements of the subsidence area of ​​a coal mining working face, such as Figure 2 As shown, including:

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

[0077] There is one main measuring station 1 and two auxiliary measuring stations which are respectively arranged on both sides of the main measuring station 1 .

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

[0079] The first coordinate information here is determined based on the coordinates of the main measuring station 1 at the first moment, specifically, the coordinate information of the position where the GNSS receiver 13 is located is obtained by the GNSS receiver 13 of the main measuring station 1 .

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

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

[0082] S3: Acquire the second coordinate information of the main measuring station 1 at the second moment and the second distance information between the main measuring station 1 and the auxiliary measuring 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 survey station 1 and the auxiliary survey station at the second moment, the sinking distance of the main survey station 1 and the sinking distance of the auxiliary survey station.

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

[0086] The above data are obtained through steps S2 and S3, which makes the measurement convenient and the measurement cycle short.

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

[0088] Among them, the subsidence elements include at least one of sinking elements, tilting elements, curvature elements, horizontal movement elements and horizontal deformation elements.

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

[0090] The tilt factor is based on the 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 confirm;

[0093] The curvature factor is based on the formula: Sure;

[0094] The horizontal deformation elements are based on the formula Sure;

[0095] Move elements horizontally based on formula Sure.

[0096] The present disclosure sets a main measuring station 1 and multiple auxiliary measuring stations, and can quickly calculate multiple subsidence elements by obtaining the first coordinate information of the main measuring station 1 at the first moment, the first height information of the auxiliary measuring station, and the first distance information between the main measuring station 1 and the multiple auxiliary measuring stations, and the second coordinate information of the main measuring station 1 at the second moment, the second height information of the auxiliary measuring station, and the second distance information between the main measuring station 1 and the multiple auxiliary measuring stations, thereby improving work efficiency. At the same time, in this solution, the calculation of each subsidence element is obtained through the main measuring station 1 and the multiple auxiliary measuring stations, and the error of the measurement result is small, which is more in line with the actual situation.

[0097] In the description of the present disclosure, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

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

[0099] In the description of the present disclosure, “plurality” means two or more.

[0100] In the description of the present disclosure, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0101] In the description of the present disclosure, “above”, “over” and “on top” a first feature of a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0102] In the description of the present disclosure, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

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

Claims

1. A method for measuring subsidence elements in a subsidence area of ​​a coal mining working face, characterized in that: include: A main measuring station and multiple auxiliary measuring stations are set up at preset positions on the working surface; Acquire first coordinate information of the main measuring station at a first moment, first height information of the auxiliary measuring station at a first moment, and first distance information between the main measuring station and a plurality of the auxiliary measuring stations; Acquire second coordinate information of the main measuring station at a second moment, second height information of the auxiliary measuring station at the second moment, and second distance information between the main measuring station and the plurality of auxiliary measuring 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 surface subsidence area are determined.

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

3. The method for measuring the subsidence elements of the working face subsidence area according to claim 1, characterized in that: The first height information is determined based on the height positions of the plurality of the auxiliary measuring stations at the first moment, and the second height information is determined based on the height positions of the plurality of the auxiliary measuring stations at the second moment.

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

5. The method for measuring the subsidence elements of the working face subsidence area according to claim 1, characterized in that: 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.

6. The method for measuring the subsidence elements of the working face subsidence area according to claim 5, characterized in that: The working surface is provided with a control station, and the horizontal movement element is determined based on the coordinates of the control station, the first coordinate information and the second coordinate information.

7. A device for measuring the subsidence elements of a coal mining working face subsidence area, characterized in that: The method applied to any one of claims 1 to 6, wherein the device includes a main measuring station and multiple auxiliary measuring stations arranged on the working surface, the main measuring station is used to obtain the first coordinate information and the second coordinate information, the auxiliary measuring stations are used to obtain the first height information and the second height information, and a measuring rod is arranged on the main measuring station to obtain the first distance information and the second distance information.

8. The device for measuring the subsidence elements of the subsidence area of ​​the coal mining working face according to claim 7, 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 a working surface, and the other end of the base is provided with the main measuring rod. The GNSS receiver is provided on the main measuring rod to obtain the first coordinate information and the second coordinate information. A measuring ruler is provided on the main measuring rod.

9. The device for measuring the subsidence elements of the subsidence area of ​​the coal mining working face according to claim 8, characterized in that: The auxiliary measuring station comprises a second base and an auxiliary measuring rod, one end of the second base is installed on the working surface, the other end of the second base is provided with the auxiliary measuring rod, and the auxiliary measuring rod is provided with a measuring mark along a first direction.

10. The device for measuring the subsidence elements of the subsidence area of ​​the coal mining working face according to claim 9, characterized in that: The measuring ruler is arranged along a second direction, and the second direction is perpendicular to the first direction.

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