Roadway roof separation monitoring device

Abstract

The present disclosure relates to a roadway roof separation monitoring device, comprising: a support structure; an anchor head assembly movably arranged in the support structure along a first direction for connecting with a roadway roof; a monitoring structure comprising parallel equal strength beams and a moving piece, the moving piece being movably arranged in the support structure along a second direction, one end of the equal strength beam being connected to the support structure, first and second magnetic pieces opposite each other being sequentially and alternately arranged on the moving piece along the second direction, a third magnetic piece being arranged on one side of the equal strength beam facing the moving piece, and the equal strength beam further being provided with a fiber bragg grating; and a transmission structure connected between the anchor head assembly and the moving piece and configured to drive the moving piece to move along the second direction through the transmission structure when the anchor head assembly moves along the first direction. Through the above technical solution, the roadway roof separation monitoring device can monitor the roof separation in real time, which is conducive to improving the reliability of the safety of the roadway and mining engineering.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of off-layer monitoring devices, in particular to a roadway roof off-layer monitoring device. BACKGROUND

[0002] In the related art, in the coal mining operation, the off-layer displacement data of the roadway roof needs to be monitored, that is, there may be a part on the roadway roof that is easy to loosen, and the ore at this part is easy to move downward to produce off-layer. The commonly used roof off-layer monitoring device is a mechanical type roadway roof off-layer indicator. The mechanical type roadway roof off-layer indicator needs to be manually observed and measured at regular intervals to measure the roof off-layer condition, and cannot monitor the roof off-layer condition in real time, thereby it is difficult to ensure the reliability of the safety of the roadway and mining engineering. SUMMARY

[0003] The purpose of the present disclosure is to provide a roadway roof off-layer monitoring device that can monitor the roof off-layer condition in real time and is beneficial to improve the reliability of the safety of the roadway and mining engineering.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a roadway roof off-layer monitoring device, comprising: a support structure for being connected to the inner wall of a roadway; an anchor head assembly movably arranged in a first direction on the support structure, the anchor head assembly being used for being connected with the roadway roof; a monitoring structure comprising an equal strength beam and a moving piece arranged in parallel, the moving piece being movably arranged in a second direction on the support structure, one end of the equal strength beam being connected to the support structure, a first magnetic piece and a second magnetic piece opposite to each other being alternately arranged in sequence on the moving piece in the second direction, a third magnetic piece being arranged on one side of the equal strength beam facing the moving piece, the equal strength beam further being provided with a fiber grating for being electrically connected with a wavelength demodulation device; and a transmission structure connected between the anchor head assembly and the moving piece, and configured to drive the moving piece to move in the second direction through the transmission structure when the anchor head assembly moves in the first direction.

[0005] Optionally, the first direction and the second direction are perpendicular to each other, the transmission structure comprises a transmission block, the transmission block being movably connected to the support structure in the first direction, the anchor head assembly being connected on the transmission block, wherein the transmission block has an inclined surface, the inclined surface having a first side and a second side oppositely arranged in the first direction, the first side being closer to the anchor head assembly than the second side, wherein the inclined surface gradually approaches the anchor head assembly from the first side to the second side, and the moving piece abuts against the inclined surface.

[0006] Optionally, a roller is connected to the moving piece, an axis of the roller extends along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the roller abuts against the inclined surface.

[0007] Optionally, a guide groove is formed in the transmission block, a bottom of the guide groove is formed with the inclined surface, and the roller is partially arranged in the guide groove.

[0008] Optionally, the monitoring structure comprises a sleeve, the sleeve is fixedly connected to the support structure, and the moving piece is in sliding connection with the sleeve.

[0009] Optionally, the monitoring structure comprises an elastic reset piece, the elastic reset piece is arranged along the second direction and connected between the sleeve and the moving piece.

[0010] Optionally, the support structure is configured as a support box, the monitoring structure and the transmission structure are arranged in the support box, and the anchor head assembly comprises an anchor head extending out of the support box.

[0011] Optionally, the anchor head assembly further comprises a connecting rod, the connecting rod comprises at least two sub-rod segments, adjacent two of the sub-rod segments are detachably connected, one of the two sub-rod segments is connected to the transmission structure, and the other is connected to the anchor head.

[0012] Optionally, a first groove is formed in the moving piece, a second groove is formed in a side of the equal-strength beam opposite to the moving piece, the first groove is sequentially and alternately installed with the first magnetic piece and the second magnetic piece along the second direction, and the second groove is installed with the third magnetic piece.

[0013] Optionally, the first groove is configured as a strip-shaped groove, and the first magnetic piece and the second magnetic piece are detachably installed in the first groove.

[0014] By the technical scheme, the roof separation monitoring device provided by the present disclosure can be connected to the inner wall of the roadway when in use, and the anchor head assembly is connected to the easily loose part of the roadway roof. When the easily loose part appears separation, the anchor head assembly is stressed to drive the transmission structure to move in the first direction. The transmission structure moving in the first direction drives the moving piece to move in the second direction. The moving piece moving drives the first magnetic piece and the second magnetic piece to move and alternately generate mutual attraction and repulsion with the third magnetic piece on the uniform strength beam, so that the uniform strength beam generates deformation correspondingly, and finally causes the center wavelength of the fiber grating on the uniform strength beam to change. The wavelength value is demodulated into a digital signal by the wavelength demodulation device and sent to the computer, and the numerical value of the roadway roof separation is displayed in real time and intuitively, so as to achieve the purpose of real-time monitoring of the roadway roof separation, and improve the reliability of the roadway and mining engineering safety. In addition, the movement of the anchor head assembly can directly reflect the position of the separation, and the movement of the moving piece can directly apply the attraction or repulsion force to the uniform strength beam, so that the transmission loss of the two directions is small, and the numerical value of the roof separation can be accurately measured.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0017] Figure 1 is a structural schematic view of the roof separation monitoring device provided by the exemplary embodiment of the present disclosure;

[0018] Figure 2 is another structural schematic view of the roof separation monitoring device provided by the exemplary embodiment of the present disclosure;

[0019] Figure 3 is a structural schematic view of the moving piece provided by the exemplary embodiment of the present disclosure;

[0020] Figure 4 is another structural schematic view of the moving piece provided by the exemplary embodiment of the present disclosure;

[0021] Figure 5 is a structural schematic view of the uniform strength beam provided by the exemplary embodiment of the present disclosure;

[0022] Figure 6 is another structural schematic view of the uniform strength beam provided by the exemplary embodiment of the present disclosure.

[0023] Explanation of reference signs

[0024] 1 - support structure; 10 - connecting seat; 11 - slide rail; 2 - anchor head assembly; 20 - anchor head; 21 - connecting rod; 211 - sub-rod section; 3 - equal strength beam; 30 - second groove; 301 - free end; 31 - third magnetic member; 32 - fiber grating; 4 - moving member; 40 - first groove; 41 - first magnetic member; 42 - second magnetic member; 43 - sleeve; 5 - transmission structure; 51 - transmission block; 511 - inclined surface; 512 - guide groove; 52 - roller; 6 - elastic reset member. DETAILED DESCRIPTION

[0025] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0026] In the present disclosure, the terms "first, second" and the like are used to distinguish one element from another element, and do not have sequential and important meanings, unless otherwise stated. Among them, "inner, outer" refers to the inner and outer of the contour of each component itself. In addition, in the following description, the same reference numerals in different drawings represent the same or similar elements, unless otherwise explained. The above definition is only used to explain and illustrate the present disclosure, and should not be understood as a limitation of the present disclosure.

[0027] It should be noted that the roadway roof is the rock stratum above the coal seam in the underground coal mine, also known as the coal seam roof, and the roadway roof accident is one of the five natural disasters in coal mines, with the characteristics of great harm and high mortality. The separation displacement data of the roadway roof needs to be monitored in order to understand the rationality of the support parameter setting of the anchor rod and ensure the stability of the roadway roof during use. The commonly used roof separation monitoring device is a mechanical roadway roof separation indicator, which needs to use manual observation method to read the data, and there is a situation of inaccurate reading. Manual observation cannot realize dynamic continuous monitoring of the roadway roof separation, that is, real-time detection of the roadway roof separation cannot be realized, which leads to difficulty in ensuring the reliability of the safety of the roadway and mining engineering.

[0028] Based on the above, reference is made to Figure 1 and Figure 2As shown in the above technical scheme, the roof separation monitoring device provided by the present disclosure can be used in the following manner. The support structure is connected to the inner wall of the roadway, and the anchor head assembly is connected to the easily loosened part of the roof of the roadway. When separation occurs in the easily loosened part, the anchor head assembly is forced to move the transmission structure in the first direction. The movement of the transmission structure in the first direction drives the movement of the moving piece in the second direction. The movement of the moving piece drives the movement of the first magnetic piece and the second magnetic piece, and the first magnetic piece and the second magnetic piece alternately and sequentially generate attractive and repulsive forces with the third magnetic piece on the equal strength beam, so that the equal strength beam is deformed correspondingly, and the center wavelength of the fiber grating on the equal strength beam is changed. The wavelength demodulation device is used to demodulate the wavelength value into a digital signal and send it to the computer, so that the value of the roof separation of the roadway can be displayed in real time and intuitively, and the purpose of real-time monitoring of the roof separation of the roadway is achieved. The reliability of the safety of the roadway and the mining engineering is improved. In addition, the movement of the anchor head assembly can directly reflect the position of the separation, and the movement of the moving piece can directly apply the attractive or repulsive force to the equal strength beam, so that the transmission loss of the movement in two directions is small, and the value of the roof separation can be accurately measured.

[0029] The roof separation monitoring device provided by the present disclosure can be used in the following manner. The support structure is connected to the inner wall of the roadway, and the anchor head assembly is connected to the easily loosened part of the roof of the roadway. When separation occurs in the easily loosened part, the anchor head assembly is forced to move the transmission structure in the first direction. The movement of the transmission structure in the first direction drives the movement of the moving piece in the second direction. The movement of the moving piece drives the movement of the first magnetic piece and the second magnetic piece, and the first magnetic piece and the second magnetic piece alternately and sequentially generate attractive and repulsive forces with the third magnetic piece on the equal strength beam, so that the equal strength beam is deformed correspondingly, and the center wavelength of the fiber grating on the equal strength beam is changed. The wavelength demodulation device is used to demodulate the wavelength value into a digital signal and send it to the computer, so that the value of the roof separation of the roadway can be displayed in real time and intuitively, and the purpose of real-time monitoring of the roof separation of the roadway is achieved. The reliability of the safety of the roadway and the mining engineering is improved. In addition, the movement of the anchor head assembly can directly reflect the position of the separation, and the movement of the moving piece can directly apply the attractive or repulsive force to the equal strength beam, so that the transmission loss of the movement in two directions is small, and the value of the roof separation can be accurately measured.

[0030] It should be noted that the use of the equal strength beam 3 in cooperation with the magnetic piece to change the center wavelength of the equal strength beam 3 is a common technical solution for measuring separation in the art. The use of the wavelength demodulation device to demodulate the wavelength value into a digital signal and send it to the computer to display the value of the roof separation of the roadway is also a common technical solution. The present application mainly uses the support structure 1 to fix the monitoring device to the inner wall, which can realize real-time monitoring, and uses the movement in two directions to reduce the displacement error caused during the movement, which is conducive to accurately measuring the value of the roof separation.

[0031] In the present disclosure, one of the first magnetic member 41 and the second magnetic member 42 can be provided as an N pole, and the other can be provided as an S pole, and the third magnetic member 31 can be provided as an N pole or an S pole, wherein the uniform strength beam 3 has a free end 301, and the third magnetic member 31 can be installed on the free end 301 of the uniform strength beam 3, so that when the third magnetic member 31 is subjected to an attractive force or a repulsive force, the free end 301 is easily driven to bend, so that the fiber grating 32 changes in wavelength due to the bending of the uniform strength beam 3, which is beneficial to improve the sensitivity of the device.

[0032] It can be understood that the uniform strength beam 3 of the present disclosure is an elastic sensitive element, and when the third magnetic member 31 is subjected to an attractive force or a repulsive force, the uniform strength beam 3 will bend, and the deflection of the free end 301 of the uniform strength beam 3 will change. By adjusting the size parameters of the uniform strength beam 3 to change the range and sensitivity, different monitoring needs can be met.

[0033] In the exemplary embodiments provided in the present disclosure, referring to Figure 1 , the first direction is perpendicular to the second direction, and the transmission structure 5 can include a transmission block 51 movably connected to the support structure 1 along the first direction, and the anchor head assembly 2 is connected to the transmission block 51, wherein the transmission block 51 has an inclined surface 511, the inclined surface 511 has a first side and a second side oppositely arranged in the first direction, and the first side is closer to the anchor head assembly 2 than the second side, wherein the inclined surface 511 gradually approaches the anchor head assembly 2 from the first side to the second side, and the moving member 4 abuts against the inclined surface 511. By such arrangement, when the anchor head assembly 2 moves due to the centrifugal force of the roadway roof, the anchor head assembly 2 drives the transmission block 51 to move along the first direction, and since the moving member 4 abuts against the inclined surface 511, when the transmission block 51 moves along the first direction, the pushing force of the inclined surface 511 on the moving member 4 gradually increases, so as to drive the moving member 4 to move along the second direction through the transmission block 51, thereby driving the first magnetic member 41 and the second magnetic member 42 to move along the second direction. In this process, as long as the transmission block 51 moves along the first direction, it will directly cause the moving member 4 to move along the second direction, ensuring the accuracy of the separation displacement transmission, thereby ensuring the accuracy of the monitoring.

[0034] In the present disclosure, referring to Figure 1 , the support structure 1 can be provided with a sliding rail 11 extending along the first direction, and the transmission block 51 is in sliding cooperation with the sliding rail 11 to guide the moving direction of the transmission block 51 through the sliding rail 11.

[0035] In the exemplary embodiments provided in the present disclosure, referring to Figure 1 and Figure 2As shown in FIG. 5, the moving piece 4 can be connected with a roller 52, the axis of the roller 52 extends along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the roller 52 abuts against the inclined surface 511. In this way, the friction caused by the direct contact between the moving piece 4 and the inclined surface 511 is avoided, and the rolling friction between the roller 52 and the inclined surface 511 is generated, which increases the smoothness. When the transmission block 51 moves, the roller 52 rolls along the inclined surface 511, and the moving piece 4 moves along the second direction, which is beneficial to improve the accuracy of monitoring.

[0036] In the example embodiments provided in the present disclosure, reference is made to Figure 1 As shown in FIG. 5, the transmission block 51 can be formed with a guide groove 512, the bottom of the guide groove 512 is formed with an inclined surface 511, and the roller 52 is partially arranged in the guide groove 512. The guide groove 512 plays a guiding role, which is used to guide the roller 52 to roll along the first direction, avoid the deflection of the roller 52, improve the stability of the movement of the roller 52, and is beneficial to improve the accuracy in the process of displacement transmission, and further improve the accuracy of monitoring.

[0037] In the example embodiments provided in the present disclosure, reference is made to Figure 1 and Figure 2 As shown in FIGS. 4 and 5, the monitoring structure can include a sleeve 43, the sleeve 43 is fixedly connected to the support structure 1, and the moving piece 4 is slidably connected to the sleeve 43. Here, the sleeve 43 is used to guide the moving direction of the moving piece 4, i.e., to realize the movement of the moving piece 4 along the second direction, and to ensure the stability of the moving piece 4 during the movement. In order to further improve the stability of the movement of the moving piece 4, the moving piece 4 can be configured as a prism structure, and the inner hole of the sleeve 43 is configured to be consistent with the contour of the moving piece 4. In this way, the rotation of the moving piece 4 during the movement is avoided, and thus the reliable cooperation between the first magnetic piece 41 and the second magnetic piece 42 with the third magnetic piece 31 is ensured, so as to ensure the reliability of monitoring.

[0038] In the example embodiments provided in the present disclosure, reference is made to Figure 1 and Figure 2 As shown in FIGS. 4 and 5, the monitoring structure can include an elastic reset piece 6, which is arranged along the second direction and connected between the sleeve 43 and the moving piece 4. In the above technical solution, the elastic reset piece 6 can be configured as a spring or an elastic rubber sleeve. Through the elastic force of the elastic reset piece 6, the moving piece 4 drives the roller 52 to effectively abut against the inclined surface 511 of the transmission block 51. In this way, when the transmission block 51 moves along the first direction, it will inevitably act on the roller 52 and make the moving piece 4 produce a corresponding displacement, thereby being beneficial to improve the accuracy of the monitoring result.

[0039] In the example embodiments provided in the present disclosure, reference is made to Figure 1As shown in the figure, the support structure 1 can be configured as a support box, the monitoring structure and the transmission structure 5 are arranged in the support box, and the anchor head assembly 2 comprises the anchor head 20 extending out of the support box. The support box protects the monitoring structure and the transmission structure 5, avoids damage caused by external impact, and is beneficial to improve the service life of the device. In addition, the support box can be stably connected with the inner wall of the roadway, thereby ensuring the stability of the device during use.

[0040] In the present disclosure, the inner wall of the support box is provided with a connecting seat 10, and the sleeve 43 and the moving piece 4 are both installed on the inner wall of the support box through the connecting seat 10. Here, the connecting seat 10 can be detachably connected to the inner wall of the support box. In this way, the monitoring structure can be maintained or replaced by detaching or installing the connecting seat 10, which is beneficial to the later maintenance.

[0041] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 1 and Figure 2 As shown in the figures, the anchor head assembly 2 can further comprise a connecting rod 21, the connecting rod 21 comprising at least two sub-rod segments 211, adjacent two sub-rod segments 211 being detachably connected, and one of the two sub-rod segments 211 being connected to the transmission structure 5 and the other being connected to the anchor head 20. In this way, the length of the connecting rod 21 can be changed by increasing or decreasing the number of sub-rod segments 211 to adapt to different use scenarios, that is, the anchor head 20 can be fixed to test points with different depths.

[0042] In the exemplary embodiments provided in the present disclosure, reference is made to Figures 3 to 6 As shown in the figure, the moving piece 4 can be provided with a first groove 40, and the side surface of the equal strength beam 3 opposite to the moving piece 4 is provided with a second groove 30. The first groove 40 is sequentially and alternately provided with a first magnetic piece 41 and a second magnetic piece 42 along the second direction, and the second groove 30 is provided with a third magnetic piece 31. By providing the first groove 40, the first magnetic piece 41 and the second magnetic piece 42 are accommodated in the first groove 40. Compared with the mode of directly adhering to the outer wall surface of the moving piece 4, the first groove 40 plays a limiting role on the first magnetic piece 41 and the second magnetic piece 42, so that the first magnetic piece 41 and the second magnetic piece 42 are not easy to fall off due to external force. In addition, by providing the first groove 40, the positioning accuracy of the installation of the first magnetic piece 41 and the second magnetic piece 42 can be improved, so that the first magnetic piece 41 and the second magnetic piece 42 can better cooperate with the third magnetic piece 31. Similarly, the second groove 30 also plays a positioning role on the third magnetic piece 31, thereby improving the stability of the third magnetic piece 31 during use.

[0043] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 3 and Figure 4As shown in FIG. 1, the first recess 40 can be configured as a strip-shaped slot, and the first magnetic member 41 and the second magnetic member 42 are detachably installed in the first recess 40. By configuring the first recess 40 as a strip-shaped slot, the distance between the first magnetic member 41 and the second magnetic member 42 can be set according to specific use requirements, thereby increasing the flexibility of use. In this embodiment, the first magnetic member 41 and the second magnetic member 42 can be installed in the first recess 40 by means of adhesion or embedding. When the embedding method is used, the width of the first recess 40 is adapted to the diameter of the first magnetic member 41 and the second magnetic member 42, so that the first magnetic member 41 and the second magnetic member 42 can be in interference fit with the first recess 40, thereby ensuring the reliability of installation.

[0044] Of course, the first magnetic member 41 and the second magnetic member 42 can also be installed in the first recess 40 by means of adhesion combined with embedding, that is, adhesive can be applied to the wall surface of the first recess 40 in contact with the first magnetic member 41 and the second magnetic member 42, and the first magnetic member 41 and the second magnetic member 42 can be embedded in the first recess 40. In this embodiment, the first magnetic member 41 and the second magnetic member 42 can be in transition or gap fit with the first recess 40, thereby improving the convenience of installation and disassembly. In addition, other installation methods that can detachably install the first magnetic member 41 and the second magnetic member 42 in the first recess 40 can also be used, and the present disclosure does not make specific limitations in this regard.

[0045] Similarly, the third magnetic member 31 can be detachably installed in the second recess 30 by any one of the methods described in the above embodiments.

[0046] Referring to Figures 1 to 6 As shown in FIG. 1, the first recess 40 can be configured as a strip-shaped slot, and the first magnetic member 41 and the second magnetic member 42 are detachably installed in the first recess 40. By configuring the first recess 40 as a strip-shaped slot, the distance between the first magnetic member 41 and the second magnetic member 42 can be set according to specific use requirements, thereby increasing the flexibility of use. In this embodiment, the first magnetic member 41 and the second magnetic member 42 can be installed in the first recess 40 by means of adhesion or embedding. When the embedding method is used, the width of the first recess 40 is adapted to the diameter of the first magnetic member 41 and the second magnetic member 42, so that the first magnetic member 41 and the second magnetic member 42 can be in interference fit with the first recess 40, thereby ensuring the reliability of installation.

[0047] First, in the anchor-supported roadway, a hole is drilled to a predetermined depth near the anchor supporting the roof of the roadway, and a test point is arranged inside the hole. The test point can be a shallow test point or a deep test point. The shallow test point is arranged at the upper end of the anchor head 20, and the deep test point is arranged in the stable rock layer at the upper end of the hole. The depth of the position where the deep test point is located is greater than the depth of the position where the shallow test point is located.

[0048] Next, the required number of support boxes of the present roadway roof separation monitoring device are installed on the inner wall of the roadway opposite to the roadway roof, and the anchor head 20 is fixed at the test point in the corresponding hole.

[0049] Then, the transmission optical cable is connected in series with the fiber grating 32, and the fiber grating 32 is electrically connected with the wavelength demodulation device. The wavelength demodulation device is in communication connection with a remote device, such as a computer. At this point, the installation of the device is completed.

[0050] Referring to Figure 2As shown in the drawings, when the roof of the roadway separates, the anchor head 20 is stressed to drive the connecting rod 21 to move, the connecting rod 21 moves to drive the transmission block 51 to move in the first direction, the transmission block 51 moves to drive the moving piece 4 to move, the moving piece 4 moves to drive the first magnetic piece 41 and the second magnetic piece 42 to move and alternately generate the mutual attraction and repulsion force with the third magnetic piece 31 on the equal strength beam 3 in turn, so that the equal strength beam 3 correspondingly generates deformation, and finally causes the center wavelength of the fiber grating 32 on the equal strength beam 3 to change, the wavelength value is demodulated into a digital signal by the wavelength demodulation device and sent to the computer, the value of the roof separation of the roadway is displayed, and the purpose of real-time monitoring of the roof separation of the roadway is achieved.

[0051] It should be noted that the device can be installed in the roadway in a vertical manner (as shown in Figure 2 ) or a horizontal manner (as shown in Figure 1 ), so as to be flexibly arranged according to specific use scenes and applied to more monitoring occasions. In actual arrangement, the first direction should be the direction of gravity. When the device is installed in a vertical manner, that is, the first direction is the direction of gravity, in order to reduce the influence of the gravity of the transmission block 51 itself on the separation, the transmission block 51 can be made of light materials, such as aluminum alloy or carbon fiber composite material.

[0052] In order to improve the safety, accuracy and timeliness of the monitoring of the roof separation of the roadway and ensure the safe and efficient production of the mine, the roof separation monitoring device is arranged in the track roadway. Specifically, at least one roof separation monitoring device is arranged every 50 m from the position 200 m away from the track roadway, that is, the roof separation monitoring devices are arranged at positions 200, 250, 300, 350, 400, 450, 500, 550 and 600 m away from the track roadway in the roadway, and the installation depth of the separation instrument is set to 6 m for the deep test point and 2 m for the shallow test point.

[0053] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept range of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection range of the present disclosure.

[0054] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combination manners are not described again in the present disclosure.

[0055] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. A roadway roof delamination monitoring device, characterized in that, include: Support structure, used to connect to the inner wall of the tunnel; An anchor head assembly is movably disposed on the support structure along a first direction, the anchor head assembly being used to connect with the roadway roof; A monitoring structure includes parallel-arranged equal-strength beams and a movable component. The movable component is movably mounted on the supporting structure along a second direction. One end of each equal-strength beam is connected to the supporting structure. The movable component is alternately provided with a first magnetic component and a second magnetic component of opposite magnetic properties along the second direction. A third magnetic component is provided on the side of the equal-strength beam facing the movable component. The equal-strength beam also has a fiber grating for electrical connection with a wavelength demodulation device. A transmission structure is connected between the anchor head assembly and the moving member, and configured such that when the anchor head assembly moves along the first direction, the transmission structure can drive the moving member to move along the second direction. The first direction and the second direction are perpendicular to each other. The transmission structure includes a transmission block, which is movably connected to the support structure along the first direction. The anchor head assembly is connected to the transmission block. The transmission block has an inclined surface, which has a first side and a second side disposed opposite to each other in the first direction. The first side is closer to the anchor head assembly than the second side. The inclined surface gradually approaches the anchor head assembly from the second side to the first side. The moving member abuts against the inclined surface.

2. The roadway roof delamination monitoring device according to claim 1, characterized in that, The movable component is connected to a roller, the axis of which extends along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other, and the roller abuts against the inclined surface.

3. The roadway roof delamination monitoring device according to claim 2, characterized in that, A guide groove is formed on the transmission block, and an inclined surface is formed at the bottom of the guide groove. The roller is partially disposed in the guide groove.

4. The roadway roof delamination monitoring device according to claim 1, characterized in that, The monitoring structure includes a sleeve, which is fixedly connected to the support structure, and the moving part is slidably connected to the sleeve.

5. The roadway roof delamination monitoring device according to claim 4, characterized in that, The monitoring structure includes an elastic reset member arranged along the second direction and connected between the sleeve and the moving member.

6. The roadway roof delamination monitoring device according to any one of claims 1-5, characterized in that, The support structure is constructed as a support box, the monitoring structure and the transmission structure are disposed in the support box, and the anchor head assembly includes an anchor head extending out of the support box.

7. The roadway roof delamination monitoring device according to claim 6, characterized in that, The anchor head assembly also includes a connecting rod comprising two segments detachably connected to each other, wherein one of the segments is connected to the transmission structure and the other is connected to the anchor head.

8. The roadway roof delamination monitoring device according to claim 1, characterized in that, The movable component has a first groove, and the equal strength beam has a second groove on the side opposite to the movable component. The first magnetic component and the second magnetic component are alternately installed in the first groove along the second direction, and the third magnetic component is installed in the second groove.

9. The roadway roof delamination monitoring device according to claim 8, characterized in that, The first groove is constructed as a strip-shaped groove, and both the first magnetic component and the second magnetic component can be detachably installed in the first groove.

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