Coal roadway roof separation monitoring device and installation method thereof

Abstract

The invention discloses a coal roadway roof separation monitoring device and an installation method thereof. The coal roadway roof separation monitoring device comprises a multi-point displacement monitoring device, an installation rod, a plurality of fixing assemblies and an abutting piece. The multi-point displacement monitoring device comprises a rod-shaped sensor and a plurality of magnetic rings, and the plurality of magnetic rings are sequentially arranged along the length direction of the sensor; the mounting rod is provided with a mounting hole, the sensor penetrates through the mounting hole and is connected with the mounting rod, and the mounting rod is provided with a connecting part connected with a coal roadway roof; the fixing assembly comprises a fixing seat and a fixing claw used for clamping the hole wall of the monitoring hole, the mounting rod is sleeved with the fixing seat in a sliding mode, the magnetic ring is connected with the fixing seat, and the fixing claw is connected with the fixing seat; the abutting piece is connected with the mounting rod and provided with an abutting part used for abutting against the fixing base. When the coal roadway roof separation monitoring device provided by the embodiment of the invention is mounted in the monitoring hole of the coal roadway roof, the mounting procedures are fewer, the mounting operation is simpler and more convenient, and the mounting efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of underground mine pressure monitoring instruments, and in particular to a coal roadway roof separation monitoring device and an installation method thereof. Background Art

[0002] During coal mining, deformation and fracture of coal rock can easily form a large number of cracks, which may cause the roof of the coal roadway to sink or even collapse, easily causing coal mine safety accidents. Therefore, it is necessary to monitor the roof delamination of coal mine tunnels.

[0003] The acoustic wave multi-point displacement meter is a delamination monitoring device that can truly reflect the delamination situation of the coal roadway roof. It includes a sensor and multiple magnetic rings. Multiple measuring points are formed in the monitoring hole of the coal roadway roof through multiple magnetic rings, so as to obtain more displacement data and improve the accuracy and reliability of the delamination monitoring results. It is more effective for delamination monitoring under complex roof conditions.

[0004] In the related art, a double-tube installation method is used to install the acoustic wave multi-point displacement meter. The measuring points are installed in the form of a large tube covering a small tube. First, the small tube needs to be installed, then the large tube, and finally the magnetic ring. The magnetic rings need to be installed one by one. This installation method has many installation steps, resulting in low installation efficiency. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention proposes a coal roadway roof separation monitoring device, which, when installed in a monitoring hole of a coal roadway roof, has fewer installation steps, simpler installation operations, and higher installation efficiency.

[0007] The coal roadway roof delamination monitoring device of the embodiment of the present invention comprises a multi-point displacement monitoring device, a mounting rod, a plurality of fixing components and a stop member; the multi-point displacement monitoring device comprises a rod-shaped sensor and a plurality of magnetic rings, and the plurality of magnetic rings are arranged in sequence along the length direction of the sensor; the mounting rod has a mounting hole, the sensor is passed through the mounting hole and connected to the mounting rod, and the mounting rod has a connecting portion for connecting to the coal roadway roof; the fixing component comprises a fixing seat and a fixing claw for clamping the hole wall of the monitoring hole, the fixing seat can be slidably mounted on the mounting rod, the magnetic ring is connected to the fixing seat, and the fixing claw is connected to the fixing seat; the stop member is connected to the mounting rod, and the stop member has a stop portion for stopping the fixing seat.

[0008] In some embodiments, the magnetic ring is glued to the fixing seat.

[0009] In some embodiments, the fixing seat has a fixing surface, the fixing surface is a plane, and the end surface of the magnetic ring is in contact with the fixing surface.

[0010] In some embodiments, a guide head is provided at one end of the mounting rod away from the orifice, and the guide head has a guide surface, and the guide surface is a spherical surface.

[0011] In some embodiments, there are multiple stop members, and the fixing components correspond to the stop members one by one.

[0012] In some embodiments, the stop member is a clamp.

[0013] In some embodiments, there are multiple fixing claws, and the multiple fixing claws are evenly arranged along the circumference of the fixing seat.

[0014] In some embodiments, the fixing claw is detachably connected to the fixing base.

[0015] The method for installing a coal roadway roof separation monitoring device according to an embodiment of the present invention is applicable to the coal roadway roof separation monitoring device according to any of the above embodiments, and the method for installing a coal roadway roof separation monitoring device comprises the following steps:

[0016] Connecting the magnetic ring to the fixing seat, and connecting the sensor to the mounting rod;

[0017] Connecting the plurality of fixing seats and the plurality of abutment members to the mounting rod alternately in sequence, and making the abutment members abut against the fixing seats;

[0018] Insert the mounting rod into the monitoring hole to a preset position, the fixing claw of the fixing seat stops against the hole wall of the monitoring hole, and the distance between two adjacent fixing seats is d;

[0019] Pulling the mounting rod outward of the monitoring hole by a preset length;

[0020] The mounting rod is connected to the coal roadway roof.

[0021] In some embodiments, the preset length is d / 2.

[0022] When installing the coal roadway roof separation monitoring device of the embodiment of the present invention, it is only necessary to alternately connect multiple fixing seats and multiple stop members to the installation rod in sequence, and then insert the installation rod into the monitoring hole of the coal roadway roof. The stop member pushes the fixing seat to move upward, so that multiple magnetic rings can be installed, and multiple fixing seats can be arranged equidistantly along the length direction of the installation rod (i.e., the sensor); after adjusting the position of the installation rod and fixing it, the coal roadway roof separation monitoring device can be installed. Compared with the double-tube installation method used in the related art, the coal roadway roof separation monitoring device of the embodiment of the present invention has fewer installation procedures, simpler installation operations, and higher installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the installation of a coal roadway roof separation monitoring device in a monitoring hole according to an embodiment of the present invention.

[0024] Figure 2 The present invention is a schematic diagram of the connection between the fixed component and the magnetic ring of the coal roadway roof separation monitoring device according to an embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of a fixed component of a coal roadway roof separation monitoring device according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100. Coal roadway roof separation monitoring device;

[0028] 1. Multi-point displacement monitoring device; 11. Sensor; 12. Magnetic ring;

[0029] 2. Mounting rod; 21. Guide head;

[0030] 3. Fixing assembly; 31. Fixing seat; 32. Fixing claw;

[0031] 4. Stop piece;

[0032] 5. Signal processing device;

[0033] 6. Glue layer;

[0034] 200, monitoring hole; 201, hole mouth; 202, hole bottom. DETAILED DESCRIPTION

[0035] 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 should not be understood as limiting the present invention.

[0036] like Figure 1 and Figure 2As shown, the coal roadway roof delamination monitoring device 100 of the embodiment of the present invention includes a multi-point displacement monitoring device 1, a mounting rod 2, a plurality of fixing components 3 and a stop member 4; the multi-point displacement monitoring device 1 includes a rod-shaped sensor 11 and a plurality of magnetic rings 12, and the plurality of magnetic rings 12 are arranged in sequence along the length direction of the sensor 11; the mounting rod 2 has a mounting hole, the sensor 11 is passed through the mounting hole and is connected to the mounting rod 2, and the mounting rod 2 has a connecting portion for connecting to the coal roadway roof; the fixing component 3 includes a fixing seat 31 and a fixing claw 32 for clamping the hole wall of the monitoring hole 200, the fixing seat 31 can be slidably mounted on the mounting rod 2, the magnetic ring 12 is connected to the fixing seat 31, and the fixing claw 32 is connected to the fixing seat 31; the stop member 4 is connected to the mounting rod 2, and the stop member 4 has a stop portion for stopping the fixing seat 31.

[0037] The coal roadway roof delamination monitoring device 100 of the embodiment of the present invention is suitable for delamination monitoring of the coal roadway roof; when installing the delamination monitoring device, first connect the magnetic ring 12 to the fixing seat 31, and connect the sensor 11 to the mounting rod 2; then multiple fixing seats 31 and multiple stop members 4 are alternately connected to the mounting rod 2 in sequence; thereafter, the mounting rod 2 is inserted into the monitoring hole 200 of the coal roadway roof to a preset position, and the fixing claws 32 of multiple fixing seats 31 all stop at the hole wall of the monitoring hole 200, so that the magnetic ring 12 can move with the movement of the internal structure of the coal roadway roof; then, the mounting rod 2 is pulled out to the outside of the monitoring hole 200 by a preset length, leaving a gap between the stop member 4 and the fixing seat 31, so that the magnetic ring 12 can move relative to the mounting rod 2; finally, the mounting rod 2 is connected to the coal roadway roof through the connecting part to fix the mounting rod 2; thereby, the installation of the coal roadway roof delamination monitoring device 100 is achieved.

[0038] When installing the coal roadway roof separation monitoring device 100 of the embodiment of the present invention, it is only necessary to alternately connect multiple fixing seats 31 and multiple stop members 4 to the installation rod 2 in sequence, and then insert the installation rod 2 into the monitoring hole 200 of the coal roadway roof. The stop member 4 pushes the fixing seat 31 to move upward, so that multiple magnetic rings 12 can be installed, and multiple fixing seats 31 can be arranged equidistantly along the length direction of the installation rod 2 (i.e., the sensor 11); after adjusting the position of the installation rod 2 and fixing it, the coal roadway roof separation monitoring device 100 can be installed. Compared with the double-tube installation method used in the related art, the coal roadway roof separation monitoring device 100 of the embodiment of the present invention has fewer installation procedures, simpler installation operations, and higher installation efficiency.

[0039] It is understandable that before installing the coal roadway roof separation monitoring device 100 , drilling operations need to be performed at appropriate locations on the coal roadway roof to form the above-mentioned monitoring hole 200 , and the above-mentioned monitoring hole 200 has a hole mouth 201 and a hole bottom 202 .

[0040] Optionally, the monitoring hole 200 is constructed using a pneumatic anchor drill with a drill bit diameter of 42 mm and 32 mm. Different drill hole diameters are selected for different underground geological conditions in coal mines; for example, in the case of poor geological conditions and broken coal and rock, a drill bit with a smaller diameter is preferably used to ensure installation stability and monitoring accuracy. There are multiple monitoring holes 200, and the spacing between two adjacent monitoring holes 200 is 10m to 100m. The spacing between two adjacent monitoring holes 200 can be adaptively adjusted according to the geological conditions of the coal tunnel.

[0041] It is understandable that, since the roof of the coal roadway has a certain height, when installing the separation monitoring device, it is necessary to use equipment such as a forklift and a stepladder for installation.

[0042] As an example, Figure 1 and Figure 2 As shown, the monitoring hole 200 extends vertically, the sensor 11 is coaxially penetrated by the mounting rod 2 and fixedly connected to the mounting rod 2, and the mounting rod 2 is inserted into the monitoring hole 200 from bottom to top; a plurality of fixing seats 31 and a plurality of stop members 4 are alternately arranged in sequence along the length direction of the mounting rod 2, and the stop members 4 are arranged on the lower side of the fixing seats 31, so that the plurality of fixing seats 31 are equidistantly arranged along the length direction of the mounting rod 2, that is, a plurality of magnetic rings 12 are mounted on the sensor 11 and equidistantly arranged along the length direction of the sensor 11; when the fixing seat 31 drives the magnetic ring 12 to move with the internal structure of the coal roadway roof, the position of the magnetic ring 12 relative to the sensor 11 changes, and the sensor 11 can monitor the position change of the magnetic ring 12, thereby reflecting the delamination condition of the coal roadway roof.

[0043] Optionally, the mounting rod 2 is made of a hard material, such as a PE pipe.

[0044] Optionally, the multi-point displacement monitoring device 1 is a magnetostrictive displacement meter, which includes a sensor 11 and a plurality of magnetic rings 12 .

[0045] The sensor 11 can monitor the position changes of the multiple magnetic rings 12 to reflect the delamination conditions of the coal roadway roof.

[0046] like Figure 1 As shown, the lower end of the sensor 11 protrudes from the mounting rod 2. The multi-point displacement monitoring device 1 also includes a signal processing device 5. The signal processing device 5 is arranged outside the monitoring hole 200 and is connected to the sensor 11. The signal processing device 5 includes a shell and a circuit board arranged inside the shell. The shell is used to support and protect the circuit board. The circuit board is electrically connected to the sensor 11 and is used for transmitting, receiving and processing displacement measurement signals, and at the same time plays the role of transmitting signals to the substation.

[0047] In some embodiments, the magnetic ring 12 is glued to the fixing seat 31 .

[0048] The magnetic ring 12 and the fixing seat 31 are connected to each other by gluing, and the connection method is relatively simple, which can improve the convenience of the assembly operation of the magnetic ring 12 and the fixing seat 31.

[0049] In some embodiments, the fixing seat 31 has a fixing surface, which is a plane, and the end surface of the magnetic ring 12 is in contact with the fixing surface.

[0050] The fixing seat 31 and the magnetic ring 12 are fitted together through two planes, so that the relative position of the fixing seat 31 and the magnetic ring 12 is stable, and the two are more firmly bonded through glue.

[0051] As an example, Figure 2 As shown, the fixing seat 31 is in a circular ring shape and matches the size of the magnetic ring 12. The magnetic ring 12 and the fixing seat 31 are coaxially arranged, and the magnetic ring 12 is arranged on the upper side of the fixing seat 31. When the magnetic ring 12 and the fixing seat 31 are bonded by glue, a glue layer 6 is formed between the two.

[0052] In some embodiments, Figure 1 As shown, a guide head 21 is provided at one end of the mounting rod 2 away from the hole 201 , and the guide head 21 has a guide surface, which is a spherical surface.

[0053] When installing the coal roadway roof separation monitoring device 100, the guide head 21 can reduce the resistance of the installation rod 2 when it moves in the monitoring hole 200, and play a guiding role in inserting the installation rod 2 into the monitoring hole 200, thereby preventing the installation rod 2 from getting stuck during the insertion process of the monitoring hole 200.

[0054] Alternatively, if Figure 1 As shown, the guide head 21 is hemispherical.

[0055] In some embodiments, there are multiple stop members 4 , and the fixing components 3 correspond to the stop members 4 one by one.

[0056] Through the above arrangement, when multiple fixing seats 31 and multiple stop members 4 are alternately connected to the mounting rod 2 in sequence, the distance between two adjacent stop members 4 can be limited, thereby limiting the distance between two adjacent fixing seats 31, thereby allowing multiple magnetic rings 12 to be arranged equidistantly.

[0057] In some embodiments, the stop member 4 is a clamp.

[0058] By configuring the stop member 4 as a clamp, the operation of connecting the stop member 4 to the mounting rod 2 is more convenient.

[0059] Optionally, the stop member 4 is a stainless steel clamp.

[0060] It can be understood that the clamp is tightly connected to the mounting rod 2 to ensure that the clamp cannot slide on the mounting rod 2, and the side of the clamp facing the fixing seat 31 forms the above-mentioned stop portion. During the process of inserting the mounting rod 2 into the monitoring hole 200, the stop portion stops at the fixing seat 31 and pushes the fixing seat 31 upward into the monitoring hole 200.

[0061] In some embodiments, Figure 2 and Figure 3 As shown, there are multiple fixing claws 32 , and the multiple fixing claws 32 are evenly arranged along the circumference of the fixing seat 31 .

[0062] When the fixing seat 31 is installed in the monitoring hole 200, multiple connection points are established between the fixing seat 31 and the hole wall of the monitoring hole 200 through multiple fixing claws 32, and the multiple connection points are evenly arranged along the circumference of the fixing seat 31, so that the fixing seat 31 is evenly stressed, which can reduce the probability of the fixing seat 31 being deflected and squeezed with the mounting rod 2, so that the fixing seat 31 can maintain smooth sliding relative to the mounting rod 2.

[0063] Optionally, the number of the fixing claws 32 is three.

[0064] In some embodiments, the fixing claw 32 is detachably connected to the fixing base 31 .

[0065] By detachably connecting the fixing claw 32 and the fixing seat 31 , the fixing claw 32 and the fixing seat 31 can be disassembled for transportation during the transportation of the coal roadway roof separation monitoring device 100 , which makes transportation more convenient.

[0066] As an example, Figure 2 As shown, the fixing claw 32 is in the shape of a long strip and is made of a metal sheet. One end of the fixing claw 32 is fixedly connected to the outer side surface of the fixing seat 31 by a bolt, and the other end extends from top to bottom in a direction away from the fixing seat 31; thus, after the fixing seat 31 and the magnetic ring 12 are installed in place, a plurality of fixing claws 32 can be stuck on the hole wall of the monitoring hole 200 to fix the magnetic ring 12, and when the internal structure of the coal roadway roof moves, the position of the magnetic ring 12 changes accordingly.

[0067] In other embodiments, the fixing claw 32 may also be connected to other positions of the fixing base 31 , such as the end surface of the fixing base 31 away from the magnetic ring 12 ; of course, the fixing claw 32 may also be connected to the fixing base 31 by welding.

[0068] The method for installing a coal roadway roof separation monitoring device according to an embodiment of the present invention is applicable to the coal roadway roof separation monitoring device 100 of any of the above embodiments. The method for installing a coal roadway roof separation monitoring device comprises the following steps:

[0069] S1: Connect the magnetic ring 12 to the fixing base 31 and connect the sensor 11 to the mounting rod 2;

[0070] S2: connecting a plurality of fixing seats 31 and a plurality of abutment members 4 to the mounting rod 2 alternately in sequence, and making the abutment members 4 abut against the fixing seats 31;

[0071] S3: insert the mounting rod 2 into the monitoring hole 200 to a preset position, the fixing claw 32 of the fixing seat 31 stops against the hole wall of the monitoring hole 200, and the distance between two adjacent fixing seats 31 is d;

[0072] S4: Connect the mounting rod 2 to the roof of the coal roadway;

[0073] S5: Pull the mounting rod 2 outward of the monitoring hole 200 by a preset length.

[0074] The installation method of the coal roadway roof separation monitoring device of the embodiment of the present invention only requires to alternately connect multiple fixing seats 31 and multiple stop members 4 to the installation rod 2 in sequence, and then insert the installation rod 2 into the monitoring hole 200 of the coal roadway roof, and the stop member 4 pushes the fixing seat 31 to move upward, so that multiple magnetic rings 12 can be installed, and multiple fixing seats 31 can be arranged equidistantly along the length direction of the installation rod 2 (i.e., the sensor 11); after adjusting the position of the installation rod 2, it is fixed to achieve the installation of the coal roadway roof separation monitoring device 100. Compared with the double-tube installation method used in the related art, the coal roadway roof separation monitoring device 100 of the embodiment of the present invention has fewer installation procedures, simpler installation operations, and higher installation efficiency.

[0075] Optionally, step S4: connect the mounting rod 2 to the coal roadway roof; specifically: install a three-claw claw on the mounting rod 2, and push the three-claw claw into the monitoring hole 200, so that the mounting rod 2 and the lower side position of the coal roadway roof are relatively fixed, and then the part of the mounting rod 2 extending out of the monitoring hole 200 is tied to the metal mesh used to protect the coal roadway roof with stainless steel wire.

[0076] Optionally, the installation rod 2 is inserted into the monitoring hole 200 to a preset position so that the distance between the end of the installation rod 2 away from the bottom 202 of the monitoring hole and the opening 201 of the monitoring hole is 20 cm to 40 cm.

[0077] This is more conducive to fixing the mounting rod 2 and the metal mesh.

[0078] In some embodiments, the preset length is d / 2.

[0079] After the mounting rod 2 is pulled out to the outside of the monitoring hole 200 by a preset length d / 2, the multiple stop members 4 move downward d / 2 accordingly, and the stop members 4 are located in the middle position of two adjacent fixed seats 31. In other words, the fixed seat 31 is located in the middle position of two adjacent stop members 4. Thus, the fixed seat 31 can drive the magnetic ring 12 to move up and down between its two adjacent stop members 4, and the maximum upward movement distance and the maximum downward movement distance are both d / 2; when delamination occurs in the coal roadway roof, the fixed seat 31 drives the magnetic ring 12 to move along with the internal structure of the coal roadway roof, and monitors the delamination situation inside the coal roadway roof through the relative position changes of the multiple magnetic rings 12 and the sensor 11.

[0080] In the description of the present invention, it is 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 limiting the present invention.

[0081] 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 invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0082] 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.

[0083] In the present invention, 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.

[0084] In the present invention, 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 invention. 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.

[0085] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A coal roadway roof separation monitoring device (100), characterized in that: The invention is suitable for monitoring the separation of coal roadway roof, wherein the coal roadway roof has a monitoring hole (200), the monitoring hole (200) has an orifice (201), and the coal roadway roof separation monitoring device (100) comprises: A multi-point displacement monitoring device (1), the multi-point displacement monitoring device (1) comprising a rod-shaped sensor (11) and a plurality of magnetic rings (12), wherein the plurality of magnetic rings (12) are arranged in sequence along the length direction of the sensor (11); A mounting rod (2), the mounting rod (2) having a mounting hole, the sensor (11) passing through the mounting hole and connected to the mounting rod (2), the mounting rod (2) having a connecting portion for connecting to the roof of the coal roadway; A plurality of fixing components (3), the fixing components (3) comprising a fixing seat (31) and a fixing claw (32) for clamping the hole wall of the monitoring hole (200), the fixing seat (31) being slidably mounted on the mounting rod (2), the magnetic ring (12) being connected to the fixing seat (31), and the fixing claw (32) being connected to the fixing seat (31); A stop member (4), the stop member (4) is connected to the mounting rod (2), and the stop member (4) has a stop portion for abutting against the fixing seat (31).

2. The coal roadway roof separation monitoring device (100) according to claim 1, characterized in that: The magnetic ring (12) is glued to the fixing seat (31).

3. The coal roadway roof separation monitoring device (100) according to claim 2, characterized in that: The fixing seat (31) has a fixing surface, which is a plane, and the end surface of the magnetic ring (12) is in contact with the fixing surface.

4. The coal roadway roof separation monitoring device (100) according to claim 1, characterized in that: A guide head (21) is provided at one end of the mounting rod (2) away from the hole (201); the guide head (21) has a guide surface which is a spherical surface.

5. The coal roadway roof separation monitoring device (100) according to claim 1, characterized in that: The number of the stop members (4) is plural, and the fixing components (3) correspond one to one with the stop members (4).

6. The coal roadway roof separation monitoring device (100) according to claim 5, characterized in that: The stop member (4) is a clamp.

7. The coal roadway roof separation monitoring device (100) according to any one of claims 1 to 6, characterized in that: There are a plurality of fixing claws (32), and the plurality of fixing claws (32) are evenly arranged along the circumference of the fixing seat (31).

8. The coal roadway roof separation monitoring device (100) according to claim 7, characterized in that: The fixing claw (32) is detachably connected to the fixing seat (31).

9. A method for installing a coal roadway roof separation monitoring device, characterized in that: The coal roadway roof separation monitoring device (100) is applicable to any one of claims 1 to 8, and the method for installing the coal roadway roof separation monitoring device comprises the following steps: Connecting the magnetic ring (12) to the fixing seat (31), and connecting the sensor (11) to the mounting rod (2); Connecting the plurality of fixing seats (31) and the plurality of abutment members (4) to the mounting rod (2) in an alternating manner, and making the abutment members (4) abut against the fixing seats (31); The mounting rod (2) is inserted into the monitoring hole (200) to a preset position, the fixing claw (32) of the fixing seat (31) abuts against the hole wall of the monitoring hole (200), and the distance between two adjacent fixing seats (31) is d; Pulling the installation rod (2) outward of the monitoring hole (200) by a preset length; The mounting rod (2) is connected to the roof of the coal roadway.

10. The method for installing a coal roadway roof separation monitoring device according to claim 9, characterized in that: The preset length is d / 2.

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