Coal mine tunnel settlement monitoring device

Abstract

The coal mine roadway settlement monitoring device comprises a base body and a monitoring assembly, the base body is suitable for being fixed to the roadway ground, a flow channel is formed in the base body, the upper surface of the base body is provided with a first opening communicated with the top of the flow channel, and the flow channel is filled with a conductive solution; the monitoring assembly comprises a voltmeter, a power supply, a first conductive piece and two second conductive pieces, the voltmeter is suitable for being fixedly installed on the side wall or the top wall of a roadway, the power supply is connected to one of the second conductive pieces in series, and the two second conductive pieces extend in the height direction and are spaced in the horizontal direction; the two second conductive parts extend into the flow channel from the first opening and are partially located below the liquid level of the conductive solution, the two ends of the first conductive part are electrically connected with the upper ends of the two second conductive parts respectively, and the voltmeter is connected with the first conductive part in parallel so as to be used for monitoring the voltage of the first conductive part. The coal mine roadway settlement monitoring device provided by the utility model has the advantages of reliability in roadway settlement monitoring and good monitoring timeliness.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring equipment, in particular to a coal mine tunnel settlement monitoring device. Background Art

[0002] During the construction of coal mines, it is very important to monitor the settlement of coal mine tunnels. Coal mine tunnels are important passages for miners to enter and exit and for ventilation of coal mines. Any settlement may affect the stability and safety of the passages, such as causing changes in groundwater levels, accumulation of surface water, and even causing accidents such as coal mine collapse and collapse. Therefore, in order to reduce or even avoid the above hidden dangers, a monitoring device is urgently needed to detect and monitor tunnel settlement in a timely manner. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model proposes a coal mine tunnel settlement monitoring device, which has the advantages of reliable settlement monitoring of the tunnel and good timeliness of monitoring.

[0005] The coal mine tunnel settlement monitoring device of the embodiment of the utility model includes a substrate and a monitoring component, the substrate is suitable for being fixed on the tunnel ground, a flow channel is formed in the substrate, the upper surface of the substrate is provided with a first opening connected to the top of the flow channel, and the flow channel is filled with a conductive solution; the monitoring component includes a voltmeter, a power supply, a first conductive member and two second conductive members, the voltmeter is suitable for being fixedly mounted on the side wall or top wall of the tunnel, the power supply is connected in series to one of the second conductive members, the two second conductive members extend in the height direction and are spaced apart in the horizontal direction, the two second conductive members both extend into the flow channel from the first opening and are partially located below the liquid level of the conductive solution, the two ends of the first conductive member are respectively electrically connected to the upper ends of the two second conductive members, and the voltmeter is connected in parallel with the first conductive member to monitor the voltage of the first conductive member.

[0006] According to the coal mine tunnel settlement monitoring device of the embodiment of the utility model, the base is fixedly installed on the tunnel ground, and the conductive solution is filled in the flow channel, the voltmeter of the monitoring component is fixedly installed on the side wall or the top wall of the tunnel, and the voltmeter is connected in parallel with the first conductive member between the two second conductive members. At this time, under the limit of the voltmeter, the two second conductive members are suspended and extend into the flow channel from the first opening part and are located below the liquid surface of the conductive solution. At this time, the first conductive member, the second conductive member, the power supply and the conductive solution form a closed circuit, and the voltmeter is able to measure the voltage at the first conductive member.

[0007] At this time, when the tunnel settles, the substrate will settle synchronously, thereby lowering the liquid level of the conductive solution, and the volume of the part of the second conductive component exposed to the conductive solution will increase, and the resistance will increase, thereby reducing the voltage measured by the voltmeter. According to the voltage change value, combined with the parameter design of the first conductive component and the second conductive component, the degree of tunnel settlement can be obtained by setting function calculation, thereby realizing reliable and timely monitoring of the tunnel settlement, which is convenient for staff to avoid possible safety hazards in time.

[0008] In some embodiments, the flow channel includes a first flow channel, a second flow channel and a third flow channel, part of the first flow channel and part of the second flow channel extend in the height direction, the third flow channel extends in the horizontal direction, both ends of the third flow channel are respectively connected to the lower end of the first flow channel and the lower end of the second flow channel, the base is provided with the first opening connected to the top of the first flow channel and the second opening connected to the top of the second flow channel, and part of the second conductive member extends into the first flow channel.

[0009] In some embodiments, the base includes a first fixed column, a second fixed column and a hose, the first fixed column forms the first flow channel, and the lower end of the first fixed column is provided with a third opening connected to the first flow channel; the second fixed column forms the second flow channel, and the lower end of the second fixed column is provided with a fourth opening connected to the second flow channel; the hose forms the third flow channel, and both ends of the hose are respectively connected to the third opening and the fourth opening.

[0010] In some embodiments, the first opening is disposed on the upper end surface of the first fixing column, the base body further comprises a first cover plate connected to the first fixing column and closing the first opening, and the first cover plate is provided with a plurality of first through holes communicating with the first flow channel;

[0011] The second opening is arranged on the upper end surface of the second fixing column, the base body further comprises a second cover plate connected to the second fixing column and closing the second opening, and the second cover plate is provided with a plurality of second through holes communicating with the second flow channel.

[0012] In some embodiments, the second opening is disposed on an outer peripheral surface of the second fixing column, the second opening is oriented in a horizontal direction, and a height of the second opening is greater than or equal to a height of the first opening.

[0013] In some embodiments, the first flow channel and the second flow channel are both L-shaped flow channels, the first fixed column includes a first connecting section extending in a horizontal direction, the movable end surface of the first connecting section is provided with the third opening, and the second fixed column includes a second connecting section extending in a horizontal direction, the movable end surface of the second connecting section is provided with the fourth opening.

[0014] In some embodiments, one end of the hose is sleeved on the first connecting section, and the second end of the hose is sleeved on the second connecting section;

[0015] The base body further includes a first clamp and a second clamp, the first end of the hose is pressed against the outer circumference of the first connecting section by the first clamp, and the second end of the hose is pressed against the outer circumference of the second connecting section by the second clamp.

[0016] In some embodiments, the first conductive member includes a first conductive line and a first resistor, the first resistor is connected in series to the first conductive line, and the voltmeter is connected in parallel to the first resistor.

[0017] In some embodiments, the second conductive member includes a second conductive line and a plurality of second resistors, the second conductive line extends along a height direction, and the plurality of second resistors are connected in series on the second conductive line at equal intervals.

[0018] In some embodiments, the monitoring component also includes a terminal, which is suitable for fixed installation on the side wall or top wall of the tunnel. The terminal includes a display screen, a controller and the voltmeter, and the display screen and the voltmeter are both electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of a monitoring component in a coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of a first fixed column and part of the monitoring components in a coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0022] Figure 4 It is a schematic diagram of the second fixed column in the coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0023] Figure 5 It is a schematic diagram of the positions of monitoring components and conductive solution in a coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0024] Figure 6 It is another schematic diagram of the positions of the monitoring components and the conductive solution in the coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0025] Figure 7 This is another schematic diagram of the positions of the monitoring components and the conductive solution in the coal mine tunnel settlement monitoring device according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1. Base; 11. First fixed column; 111. First flow channel; 112. First connecting section; 12. Second fixed column; 121. Second flow channel; 122. Second connecting section; 13. Hose; 131. Third flow channel; 14. First clamp; 15. Second clamp; 2. Power supply; 3. First conductive wire; 4. First resistor; 5. Second conductive wire; 6. Second resistor; 7. Terminal; 8. Lane; 81. Ground. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0029] Combine the following Figure 1-Figure 7 A coal mine tunnel settlement monitoring device according to an embodiment of the utility model is described.

[0030] The coal mine tunnel settlement monitoring device of the embodiment of the utility model includes a substrate 1 and a monitoring component. The substrate 1 is suitable for being fixed on the ground 81 of the tunnel 8, a flow channel is formed in the substrate 1, and the upper surface of the substrate 1 is provided with a first opening connected to the top of the flow channel, and the flow channel is filled with a conductive solution. The monitoring component includes a voltmeter, a power supply 2, a first conductive member and two second conductive members, the voltmeter is suitable for being fixedly mounted on the side wall or top wall of the tunnel 8, the power supply 2 is connected in series to one of the second conductive members, the two second conductive members extend in the height direction and are spaced apart in the horizontal direction, the two second conductive members both extend into the flow channel from the first opening and are partially located below the liquid level of the conductive solution, the two ends of the first conductive member are respectively electrically connected to the upper ends of the two second conductive members, and the voltmeter is connected in parallel with the first conductive member to monitor the voltage at the first conductive member.

[0031] According to the coal mine tunnel settlement monitoring device of the embodiment of the utility model, the base 1 is fixedly installed on the ground 81 of the tunnel 8, and the conductive solution is filled in the flow channel, the voltmeter of the monitoring component is fixedly installed on the side wall or the top wall of the tunnel 8, and the voltmeter is connected in parallel with the first conductive member between the two second conductive members. At this time, under the limit of the voltmeter, the two second conductive members are suspended and extend into the flow channel from the first opening part and are located below the liquid surface of the conductive solution. At this time, the first conductive member, the second conductive member, the power supply 2 and the conductive solution form a closed circuit, and the voltmeter is able to measure the voltage at the first conductive member.

[0032] At this time, when the tunnel 8 settles, the substrate 1 will settle synchronously, thereby lowering the liquid level of the conductive solution, and the volume of the part of the second conductive component exposed to the conductive solution increases, and the resistance increases, thereby making the voltage measured by the voltmeter smaller. According to the voltage change value, combined with the parameter design of the first conductive component and the second conductive component, the settlement degree of the tunnel 8 can be obtained by setting the function calculation, thereby realizing reliable and timely monitoring of the settlement of the tunnel 8, and facilitating the staff to avoid possible safety hazards in time.

[0033] It should be noted that the conductive solution is a salt solution. By arranging the portion of the second conductive member located in the flow channel to extend in the height direction, the resistance of the portion of the second conductive member exposed to the conductive solution is roughly in direct proportion to the length, thereby making it easier to obtain the settlement value of the tunnel 8 based on the voltage value measured by the voltmeter.

[0034] In some embodiments, Figure 1 As shown, the flow channel includes a first flow channel 111, a second flow channel 121 and a third flow channel 131. Part of the first flow channel 111 and part of the second flow channel 121 extend in the height direction, and the third flow channel 131 extends in the horizontal direction. Both ends of the third flow channel 131 are respectively connected to the lower end of the first flow channel 111 and the lower end of the second flow channel 121. A first opening connected to the top of the first flow channel 111 and a second opening connected to the top of the second flow channel 121 are provided on the substrate 1, and part of the second conductive member extends into the first flow channel 111.

[0035] That is, the flow channel is generally a U-shaped flow channel, the conductive solution fills the third flow channel 131 and partially fills the first flow channel 111 and the second flow channel 121, and the setting of the first opening and the second opening ensures that the liquid level of the conductive solution in the first flow channel 111 is the same as the liquid level of the conductive solution in the second flow channel 121, thereby ensuring that the entire flow channel settles synchronously with the channel 8, and the degree of change in the height of the liquid level of the conductive solution in the first flow channel 111 is equivalent to the degree of change in the settlement of the channel 8.

[0036] Specifically, the extension direction of the third flow channel 131 can be the width direction of the alley 8 or the length direction of the alley 8. The upper end of the first flow channel 111 and the upper end of the second flow channel 121 protrude from the ground 81 of the alley 8 and are adjacent to the side wall of the alley 8, thereby avoiding that the part of the substrate 1 constituting the first flow channel 111 and the second flow channel 121 does not affect the normal use of the alley 8.

[0037] In some embodiments, Figure 1 , Figure 3 and Figure 4As shown, the base 1 includes a first fixed column 11, a second fixed column 12 and a hose 13. The first fixed column 11 is formed with a first flow channel 111, and a third opening communicating with the first flow channel 111 is provided at the lower end of the first fixed column 11. The second fixed column 12 is formed with a second flow channel 121, and a fourth opening communicating with the second flow channel 121 is provided at the lower end of the second fixed column 12. The hose 13 is formed with a third flow channel 131, and both ends of the hose 13 are respectively communicated with the third opening and the fourth opening.

[0038] After the first fixed column 11 and the second fixed column 12 are fixed on the ground 81 of the tunnel 8, the hose 13 completes the connection between the two, and at the same time, a partial margin of the arrangement of the hose 13 can be made. Therefore, when the tunnel 8 undergoes irregular settlement and the distance between the first fixed column 11 and the second fixed column 12 changes, the hose 13 can ensure reliable connection with each of the first fixed column 11 and the second fixed column 12 by deformation, thereby making the structural stability of the base 1 higher and the settlement monitoring of the tunnel 8 more reliable.

[0039] Specifically, the hose 13 is an elastic tube, and / or the hose 13 is a telescopic tube.

[0040] In some embodiments, the first opening is provided on the upper end surface of the first fixing column 11, the base 1 further includes a first cover plate connected to the first fixing column 11 and closing the first opening, and the first cover plate is provided with a plurality of first through holes communicating with the first flow channel 111. The second opening is provided on the upper end surface of the second fixing column 12, the base 1 further includes a second cover plate connected to the second fixing column 12 and closing the second opening, and the second cover plate is provided with a plurality of second through holes communicating with the second flow channel 121.

[0041] A first cover plate is provided at the first opening, and a plurality of first through holes are provided on the first cover plate. The second conductive member can be slidably extended into the first flow channel 111 through the first through hole in the vertical direction, thereby effectively preventing the second conductive member from interfering with the first fixed column 11 and being pulled downward together to damage the circuit when the lane 8 settles.

[0042] A second cover plate is set at the second opening, and the second cover plate is connected to the second flow channel 121 through multiple second through holes, thereby ensuring that the liquid levels of the conductive solutions in the first flow channel 111 and the second flow channel 121 are consistent, and the aperture of each second through hole is effectively reduced, thereby effectively reducing the probability of large particles of dust entering the second flow channel 121.

[0043] Alternatively, the second opening is disposed on the outer peripheral surface of the second fixing column 12 , the second opening is oriented in a horizontal direction, and the height of the second opening is greater than or equal to the height of the first opening.

[0044] That is, the second opening is arranged on the side of the second fixed column 12 , which also reduces the risk of dust entering the second flow channel 121 through the second opening, and further ensures the accuracy of the coal mine tunnel settlement monitoring device in monitoring the settlement of the tunnel 8 .

[0045] In some embodiments, Figure 3 and Figure 4 As shown, the first flow channel 111 and the second flow channel 121 are both L-shaped flow channels, the first fixed column 11 includes a first connecting section 112 extending in the horizontal direction, and the movable end surface of the first connecting section 112 is provided with a third opening, and the second fixed column 12 includes a second connecting section 122 extending in the horizontal direction, and the movable end surface of the second connecting section 122 is provided with a fourth opening.

[0046] That is, the third opening and the fourth opening are both opened toward the horizontal direction, and the openings are arranged opposite to each other, thereby making it easier for the hose 13 extending in the horizontal direction to be docked and connected to the first connecting section 112 and the second connecting section 122 respectively.

[0047] In some embodiments, Figure 1 As shown, one end of the hose 13 is sleeved on the first connecting section 112, and the second end of the hose 13 is sleeved on the second connecting section 122. The base 1 also includes a first clamp 14 and a second clamp 15, and the first end of the hose 13 is pressed against the outer circumference of the first connecting section 112 by the first clamp 14, and the second end of the hose 13 is pressed against the outer circumference of the second connecting section 122 by the second clamp 15.

[0048] The first end of the hose 13 is fastened to the first connecting section 112 by the first clamp 14, and the second end of the hose 13 is fastened to the second connecting section 122 by the second clamp 15, so that the assembly of the base 1 is convenient and quick, and the reliability of the connection and sealing between the third flow channel 131 and each of the first flow channel 111 and the second flow channel 121 is ensured.

[0049] In some embodiments, Figure 5-Figure 7 As shown, the first conductive member includes a first conductive wire 3 and a first resistor 4. The first resistor 4 is connected in series to the first conductive wire 3, and the voltmeter is connected in parallel to the first resistor 4.

[0050] The first resistor 4 is a detection resistor. The voltmeter is electrically connected to the two ends of the first conductive line 3 through two wires to achieve parallel connection with the first resistor 4. Therefore, the settlement degree of the tunnel 8 can be determined by monitoring the voltage at the first resistor 4.

[0051] In some embodiments, Figure 5-Figure 7 As shown, the second conductive member includes a second conductive line 5 and a plurality of second resistors 6 . The second conductive line 5 extends in a height direction, and the plurality of second resistors 6 are connected in series on the second conductive line 5 at equal intervals.

[0052] Compared with the second resistor 6, the resistance of the second conductive wire 5 is almost negligible. At this time, the voltage at the first resistor 4 measured by the voltmeter can be used to obtain the number of all second resistors 6 exposed to the conductive solution, and then it can be determined between which two second resistors 6 the liquid level of the conductive solution is located, thereby obtaining the degree of settlement of the tunnel 8.

[0053] Each second conductive element includes an equal number of second resistors 6 , and a plurality of second resistors 6 are connected in series on corresponding second conductive lines 5 at equal intervals.

[0054] In some embodiments, the monitoring component further includes a terminal 7, which is suitable for being fixedly mounted on the side wall or top wall of the tunnel 8. The terminal 7 includes a display screen, a controller and a voltmeter, and both the display screen and the voltmeter are electrically connected to the controller.

[0055] The voltage signal at the voltmeter test point is transmitted to the controller, which converts the signal into parameters that can represent the degree of settlement of Tunnel 8, and then transmits it to the display screen for display, so that the staff can intuitively obtain the settlement information of Tunnel 8.

[0056] In the description of the present invention, it should 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 invention 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 invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A coal mine tunnel settlement monitoring device, characterized in that: include: A substrate, the substrate being suitable for being fixed on the ground of the tunnel, a flow channel being formed in the substrate, a first opening communicating with the top of the flow channel being provided on the upper surface of the substrate, and the flow channel being filled with a conductive solution; A monitoring component, the monitoring component includes a voltmeter, a power supply, a first conductive member and two second conductive members, the voltmeter is suitable for being fixedly mounted on the side wall or top wall of the tunnel, the power supply is connected in series to one of the second conductive members, the two second conductive members extend in the height direction and are spaced apart in the horizontal direction, the two second conductive members both extend into the flow channel from the first opening and are partially located below the liquid surface of the conductive solution, the two ends of the first conductive member are electrically connected to the upper ends of the two second conductive members respectively, and the voltmeter is connected in parallel with the first conductive member for monitoring the voltage of the first conductive member.

2. The coal mine tunnel settlement monitoring device according to claim 1, characterized in that: The flow channel includes a first flow channel, a second flow channel and a third flow channel, part of the first flow channel and part of the second flow channel extend in the height direction, the third flow channel extends in the horizontal direction, both ends of the third flow channel are respectively connected with the lower end of the first flow channel and the lower end of the second flow channel, the base is provided with the first opening connected with the top of the first flow channel and the second opening connected with the top of the second flow channel, and part of the second conductive member extends into the first flow channel.

3. The coal mine tunnel settlement monitoring device according to claim 2, characterized in that: The substrate comprises: a first fixing column, wherein the first flow channel is formed on the first fixing column, and a third opening communicating with the first flow channel is provided at a lower end of the first fixing column; a second fixing column, wherein the second fixing column is formed with the second flow channel, and a fourth opening communicating with the second flow channel is provided at a lower end of the second fixing column; A hose is formed with the third flow channel, and two ends of the hose are respectively connected to the third opening and the fourth opening.

4. The coal mine tunnel settlement monitoring device according to claim 3, characterized in that: The first opening is arranged on the upper end surface of the first fixing column, the base body further comprises a first cover plate connected to the first fixing column and closing the first opening, the first cover plate is provided with a plurality of first through holes communicating with the first flow channel; The second opening is arranged on the upper end surface of the second fixing column, the base body further comprises a second cover plate connected to the second fixing column and closing the second opening, and the second cover plate is provided with a plurality of second through holes communicating with the second flow channel.

5. The coal mine tunnel settlement monitoring device according to claim 3, characterized in that: The second opening is arranged on the outer peripheral surface of the second fixing column, the second opening is oriented in a horizontal direction, and the height of the second opening is greater than or equal to the height of the first opening.

6. The coal mine tunnel settlement monitoring device according to claim 3, characterized in that: The first flow channel and the second flow channel are both L-shaped flow channels, the first fixed column includes a first connecting section extending in a horizontal direction, and the movable end surface of the first connecting section is provided with the third opening, and the second fixed column includes a second connecting section extending in a horizontal direction, and the movable end surface of the second connecting section is provided with the fourth opening.

7. The coal mine tunnel settlement monitoring device according to claim 6, characterized in that: One end of the hose is sleeved on the first connecting section, and the second end of the hose is sleeved on the second connecting section; The base body further includes a first clamp and a second clamp, the first end of the hose is pressed against the outer circumference of the first connecting section by the first clamp, and the second end of the hose is pressed against the outer circumference of the second connecting section by the second clamp.

8. The coal mine tunnel settlement monitoring device according to any one of claims 1 to 7, characterized in that: The first conductive member includes a first conductive line and a first resistor, the first resistor is connected in series to the first conductive line, and the voltmeter is connected in parallel to the first resistor.

9. The coal mine tunnel settlement monitoring device according to any one of claims 1 to 7, characterized in that: The second conductive member includes a second conductive line and a plurality of second resistors. The second conductive line extends in a height direction. The plurality of second resistors are connected in series on the second conductive line at equal intervals.

10. The coal mine tunnel settlement monitoring device according to claim 1, characterized in that: The monitoring component also includes a terminal, which is suitable for fixed installation on the side wall or top wall of the tunnel. The terminal includes a display screen, a controller and the voltmeter, and the display screen and the voltmeter are both electrically connected to the controller.

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