Installation and recovery integrated roof displacement monitoring device and method

Abstract

The invention discloses an installation and recovery integrated roof displacement monitoring device and method. Relates to the technical field of mining monitoring. The device comprises a hollow fixing rod, a monitoring rod arranged in the fixing rod and a displacement monitor connected to the bottom of the fixing rod, deep anchor flukes and shallow anchor flukes are arranged on the fixing rod in the length direction of the fixing rod at intervals, and the device is characterized in that the shallow anchor flukes are slidably connected to the fixing rod in the length direction of the fixing rod, and the deep anchor flukes are fixedly arranged on the fixing rod; two recovery sleeves are slidably connected to the fixing rod in the length direction of the fixing rod, the recovery sleeves slide to collect the deep anchor flukes or the shallow anchor flukes into the recovery sleeves, and the monitoring rod is used for being connected with the recovery sleeves to drive the recovery sleeves to slide; the use method of the device is briefly described. According to the installation and recovery integrated roof displacement monitoring device and method provided by the invention, through the cooperative design of the sliding recovery sleeve and the separable anchor fluke and in combination with a spliced rod body structure, rapid installation and lossless recovery of the monitoring device are realized, and the technical problems that traditional equipment cannot be reused and is low in installation precision are solved; the method has the remarkable advantages of improving the monitoring efficiency and reducing the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of mine exploitation monitoring, and particularly relates to an integrated installation and recovery roof displacement monitoring device. Background Art

[0002] Goafs are generated during mine exploitation, and the collapse of the roof of the goaf is the main factor leading to mine safety accidents.

[0003] Currently, the stability of the roof of the goaf is mainly monitored by using a roof separation meter. However, the installation device and the monitoring system of the roof separation meter are separated, and the roof separation meter cannot be recovered after installation, resulting in cumbersome installation of the roof separation meter and one-time loss of the roof separation meter. Therefore, it is necessary to invent an integrated installation and monitoring roof separation monitoring device that can be recovered.

[0004] The roof separation meter measures the separation amount of the shallow reference point with a stable deep reference point. Both the deep and shallow reference points are fixedly arranged in the hole by using inverted anchor claws. First, the deep and shallow reference point anchor claws are pushed to the corresponding installation positions through an external installation rod. However, since the deep and shallow reference point anchor claws are in the shape of a barbed hook, they cannot be taken out and recovered after installation; the whole device cannot be reused. Summary of the Invention

[0005] In order to improve the recycling rate of the equipment, the present application provides an integrated installation and recovery roof displacement monitoring device and method.

[0006] In a first aspect, the present application provides an integrated installation and recovery roof displacement monitoring device, adopting the following technical solution:

[0007] An integrated installation and recovery roof displacement monitoring device includes a hollow fixed rod, a monitoring rod arranged inside the fixed rod, and a displacement monitor connected to the bottom of the fixed rod. Deep anchor claws and shallow anchor claws are arranged at intervals along the length direction of the fixed rod. The shallow anchor claws are slidably connected to the fixed rod along the length direction of the fixed rod, and the deep anchor claws are fixedly arranged on the fixed rod. Two recovery sleeves are slidably connected to the fixed rod along the length direction of the fixed rod. The recovery sleeves slide to receive the deep anchor claws or the shallow anchor claws into the recovery sleeves, and the monitoring rod is used to connect with the recovery sleeves to drive them to slide.

[0008] Optionally, two sliding grooves are opened along the length direction of the fixed rod, and the two recovery sleeves are respectively slidably connected in the two sliding grooves. A connecting plate is arranged on the recovery sleeve, and the connecting plate passes through the sliding groove to extend into the interior of the fixed rod; the shallow anchor claws are also slidably connected in the sliding groove, and a part of the shallow anchor claws passes through the sliding groove to extend into the fixed rod.

[0009] Optionally, a screw rod for connecting with the connecting plate is arranged at the top end of the monitoring rod, and a threaded section for connecting with the connecting plate and the shallow anchor claws is arranged in the middle section of the monitoring rod; the outer diameter of the threaded section is larger than the outer diameter at the position of the screw rod

[0010] Optionally, the fixed rod is divided into upper, middle, and lower sections. The upper section of the fixed rod is provided with the deep anchor claws, sliding grooves, and recovery sleeves. The lower section is provided with the sliding grooves, shallow anchor claws, and recovery sleeves. The middle section is formed by splicing multiple connecting rods end to end in a threaded manner.

[0011] Optionally, the monitoring rod is also divided into upper, middle, and lower sections. The upper section is provided with the screw rod, the lower section is provided with the threaded section, and the middle section is formed by splicing multiple connecting rods end to end in a threaded manner.

[0012] Optionally, a plurality of guiding holes for the monitoring rod to pass through are provided inside the fixed rod.

[0013] In a second aspect, the present application provides an integrated installation and recovery roof displacement monitoring method, adopting the following technical solutions:

[0014] An integrated installation and recovery roof displacement monitoring method includes the following steps:

[0015] S1. Assemble the fixed rod and the monitoring rod according to the required length.

[0016] S2. Insert the monitoring rod from the bottom of the fixed rod, sequentially pass through the shallow anchor claws and the lower recovery sleeve, and connect it to the shallow anchor claws.

[0017] S3. Install the fixed rod and the measuring rod into the measuring hole.

[0018] S4. Install the displacement monitor: The displacement monitor has a displacement measuring hole in the middle. Pass the bottom of the monitoring rod through the displacement measuring hole, and fix the displacement monitor at the bottom end of the fixed rod. The monitoring rod moves in the displacement measuring hole of the monitor as the rock formation moves, and the displacement monitor can read the movement amount of the monitoring rod, that is, the roof separation amount.

[0019] S5. Recovery: First, remove the displacement monitor, then push the monitoring rod upward. The shallow anchor claws drive the lower recovery sleeve until the lower recovery sleeve is pushed to the top of the lower guiding groove, and the shallow anchor claws are retracted into the lower recovery sleeve. At this time, the threaded section of the monitoring rod just abuts against the threaded opening of the lower recovery sleeve, and the screw rod abuts against the upper recovery sleeve. Then, turn the monitoring rod to connect the monitoring rod to the two recovery sleeves. Subsequently, pull back to recover the deep anchor claws into the upper recovery sleeve.

[0020] In summary, the present application includes the following beneficial technical effects:

[0021] An integrated installation and recovery roof displacement monitoring device and method provided by the present application, through the cooperative design of a sliding recovery sleeve and separable anchor claws, combined with a spliced rod structure, realizes the rapid installation and non-destructive recovery of the monitoring device, solves the technical problems of the traditional equipment being unable to be reused and having low installation accuracy, and has the remarkable advantages of improving the monitoring efficiency and reducing the maintenance cost. Description of the Drawings

[0022] Figure 1 is the overall structure diagram of an integrated installation and recovery roof displacement monitoring device;

[0023] Figure 2 is Figure 1 the structural diagram of the fixed rod in another perspective in

[0024] Description of the Reference Numerals:

[0025] 1. Recovery sleeve; 2. Deep anchor claw; 3. Fixed rod; 31. Chute; 4. Guide hole; 5. Monitoring rod; 51. Screw rod; 52. Threaded section; 6. Shallow anchor claw; 7. Displacement monitor. Detailed Embodiment

[0026] The following further describes the present application in detail Figure 1-2 in conjunction with the attached drawings.

[0027] In the prior art, the stability monitoring of the roof in the goaf of a mine mainly relies on a roof separation meter. Its installation device and monitoring system are independent of each other, and the anchor claws cannot be recovered after being fixed. For example, in the roof monitoring operation of a deep mine, since both the deep base point and the shallow base point adopt an inverted hook-type anchor claw structure, the anchor claws are permanently embedded in the rock formation after installation, resulting in the monitoring device being unable to be reused. Each monitoring requires the consumption of new equipment, significantly increasing the operation cost and causing a large amount of waste of consumables.

[0028] To solve the above problems, the inventor found that the existing anchor claw fixing method has an irreversible embedding defect and tried to achieve a recoverable function by changing the connection method of the anchor claws. It was analyzed that the deep base point needs to maintain long-term stability, while the shallow base point only needs temporary positioning. Therefore, a combined structure was proposed in which the deep anchor claw 2 is fixedly connected and the shallow anchor claw 6 is slidably connected. Further, a slidable recovery sleeve 1 is arranged on the fixed rod 3, and the movement of the monitoring rod 5 is used to drive the displacement of the sleeve, realizing the technical solution of receiving the anchor claws into the sleeve to release the embedded state.

[0029] Therefore, the present application proposes a monitoring device including a hollow fixed rod 3, an internal monitoring rod 5 and a bottom displacement monitor 7. The shallow anchor claws 6 connected by sliding and the deep anchor claws 2 connected fixedly are arranged at intervals in the length direction of the fixed rod 3. Two slidable recovery sleeves 1 are driven by the monitoring rod 5 and are respectively used to receive the deep anchor claws 2 or the shallow anchor claws 6.

[0030] Among them, the sliding connection of the shallow anchor claw 6 along the length direction of the fixed rod 3 means that there is an axial movement degree of freedom between the anchor claw and the rod body, and relative displacement can be realized through a slide rail or a guide groove, which is convenient for subsequent recovery operations. The fixed setting of the deep anchor claw 2 means that the anchor claw and the rod body are rigidly connected by welding or thread fastening to ensure the stability of the deep base point measurement reference.

[0031] The sliding connection of the recovery sleeve 1 means that a moving pair is formed between the outer wall of the sleeve and the inner wall of the fixed rod 3, the inner cavity size of the sleeve is smaller than the maximum outer profile in the unfolded state of the anchor claw, and the anchor claw is covered by the displacement of the sleeve to realize detachment from the rock formation. The connection between the monitoring rod 5 and the recovery sleeve 1 means that power transmission is formed by means of thread meshing or a snap structure, so that the axial movement of the monitoring rod 5 can drive the sleeve to move synchronously.

[0032] Specifically, in the installation stage, after the fixed rod 3 is placed into the measurement hole, the deep anchor claw 2 remains fixed to form a reference point, and the shallow anchor claw 6 slides to a predetermined position. During the monitoring process, since the shallow anchor claw 6 is connected to the monitoring rod 5, the displacement of the rock formation drives the shallow anchor claw 6 and the monitoring rod 5 to move, and the displacement detector 7 records the displacement amount. During recovery, the shallow anchor claw 6 is lifted upward by pulling up the monitoring rod 5, and the shallow anchor claw 6 is retracted into the sleeve to release the anchoring; the monitoring rod 5 is rotated to disengage it from the shallow anchor claw 6, and after connecting to the upper recovery sleeve 1 and pulling it down, the shallow anchor claw 6 enters the sleeve; subsequently, similarly, the upper recovery sleeve 1 is connected by a screw rod, and the deep anchor claw 2 is recovered after pulling it down. During the whole process, the relative movement between the fixed rod 3 and the monitoring rod 5 is converted into the displacement of the sleeve to realize the state switching of the anchor claw.

[0033] Compared with the prior art, the traditional anchor claw barb structure forms an irreversible engagement, while in this solution, the mechanical lock is released by covering the anchor claw with a sliding sleeve without damaging the rock formation structure, so that the device can be completely taken out. The prior art requires separate installation of a monitoring device and a recovery system, while this solution integrates the monitoring function and the recovery mechanism on the same rod body, and two operations of data acquisition and equipment recovery are completed simultaneously through the movement of the monitoring rod 5.

[0034] Through the above technical solution, this application effectively solves the problem of equipment loss caused by non-recoverable anchor claws and realizes the reuse of the monitoring device. The integrated design simplifies the installation process, and the operator only needs to push and pull the monitoring rod 5 to complete all the recovery steps, which significantly improves the operation efficiency and reduces the material cost.

[0035] This application further proposes that two sliding grooves 31 are opened on the fixed rod 3 along its own length direction, and two recovery sleeves 1 are respectively slidably connected in the two sliding grooves 31. A connecting plate is provided on the recovery sleeve 1, and the connecting plate passes through the sliding groove 31 to extend into the interior of the fixed rod 3.

[0036] Among them, the sliding groove 31 refers to a groove-shaped structure opened along the length direction of the fixed rod 3, which can be specifically realized by a linear through groove, and is used to provide a sliding track for the recovery sleeve 1. The recovery sleeve 1 refers to a cylindrical component sleeved outside the fixed rod 3, which can be specifically realized by a metal cylinder, and the anchor claw is received into it by sliding along the sliding groove 31. The connecting plate refers to a plate-shaped structure fixed on the recovery sleeve 1, which can be specifically realized by welding or bolt connection, passes through the sliding groove 31 to extend into the fixed rod 3 and is connected to the monitoring rod 5, so as to transmit the driving force of the monitoring rod 5 to the recovery sleeve 1.

[0037] Specifically, the two sliding grooves 31 opened on the fixed rod 3 are used to guide the recovery sleeve 1 to slide along a predetermined path. The recovery sleeve 1 is connected to the monitoring rod 5 through the connecting plate. When the monitoring rod 5 is driven, the connecting plate transmits the driving force to the recovery sleeve 1, causing it to move along the sliding groove 31, so as to receive the anchor claw into the sleeve. This design realizes the directional sliding of the recovery sleeve 1 through the cooperation of the sliding groove 31 and the connecting plate, avoiding the jamming problem caused by force offset.

[0038] Compared with the prior art, the anchor claw of the existing roof separation indicator cannot be recovered after installation, while in this solution, by arranging the sliding groove 31 and the slidable recovery sleeve 1 on the fixed rod 3, the anchor claw can be received into the sleeve, so as to realize the reuse of the device. In the prior art, there is a lack of linkage control between the anchor claw and the installation rod, while in this solution, through the direct connection between the connecting plate and the monitoring rod 5, the driving force of the monitoring rod 5 is converted into the sliding power of the recovery sleeve 1, simplifying the operation process.

[0039] Through the above technical solution, this application solves the problem that the anchor claw of the traditional roof separation indicator cannot be recovered, and realizes the controllable storage of the deep anchor claw 2 and the shallow anchor claw 6. Through the cooperation of the sliding groove 31 and the recovery sleeve 1, it is possible to avoid the interference between the anchor claw and the hole wall during the recovery process, improving the recovery reliability. In addition, as a power transmission component, the connecting plate enables the one-way drive of the monitoring rod 5 to complete the recovery of multiple anchor claws, significantly reducing the operation complexity.

[0040] This application further proposes that a screw rod 51 for connecting with the connecting plate is provided at the top end of the monitoring rod 5, and a threaded section 52 for connecting with the connecting plate and the shallow anchor claw 6 is provided in the middle section of the monitoring rod 5; the outer diameter of the threaded section 52 is larger than the outer diameter at the screw rod 51.

[0041] Among them, the screw rod 51 refers to a threaded connection structure provided at the top end of the monitoring rod 5, which can be specifically realized by an external threaded cylinder structure, and is used to form a threaded fit with the connecting plate of the recovery sleeve 1. Among them, the threaded section 52 refers to the threaded structure in the middle section of the monitoring rod 5, which is used to establish a detachable connection with the connecting plate of the recovery sleeve 1 and can also be detachably connected to the shallow anchor claw 6.

[0042] Specifically, when the monitoring rod 5 moves upward, the screw rod 51 at the top first passes through the shallow anchor claw 6 and the connecting plate of the recovery sleeve 1 below. As the monitoring rod 5 continues to advance, the threaded section 52 contacts the shallow anchor claw 6. Then, the shallow anchor claw 6 is held by hand to limit its rotation. The monitoring rod 5 is rotated so that the threaded section 52 in the middle section forms a secondary connection with the shallow anchor claw 6. It should be noted that the entire device needs to be placed into the monitoring hole after the monitoring rod 5 is connected to the shallow anchor claw 6. At this time, the screw rod 51 has completely entered the interior of the fixed rod 3. When the shallow anchor claw 6 needs to be recovered, the shallow anchor claw 6 is driven axially by the monitoring rod 5 to enter the recovery sleeve 1 below. The monitoring rod 5 is then rotated so that the threaded section 52 is screwed out of the shallow anchor claw 6 and screwed into the recovery sleeve 1. At this time, the screw rod 51 is also screwed into the recovery sleeve 1 above. Finally, the monitoring rod 5 is pulled back to recover the deep anchor claw 2 into the recovery sleeve 1 above.

[0043] Through the above technical solution, the present application can realize the graded recovery control of deep and shallow anchor claws 6, avoiding overload damage of the connectors during the recovery process; the modular threaded interface design is adopted to simplify the connection operation steps of the monitoring rod 5 with the recovery sleeve 1 and the shallow anchor claw 6.

[0044] The present application further proposes that the fixing rod be divided into three sections: upper, middle, and lower. The upper section of the fixing rod is provided with the deep fluke 2, the chute 31, and the recovery sleeve 1; the lower section is provided with the chute 31, the shallow fluke 6, and the recovery sleeve 1; the middle section is formed by splicing multiple connecting rods end to end in the form of threads, and the upper, middle, and lower sections can be connected by using threaded sleeves and screws.

[0045] Through the above technical solution, the present application realizes that the middle section of the fixing rod 3 can be quickly assembled and adjusted in length according to the depth of the monitoring hole, so that it can adapt to measuring holes of different depths, reducing the difficulty of transportation and storage. At the same time, by locally setting the slide groove 31 and the anchor claw structure, redundant components are reduced while ensuring the reliability of anchoring, so that the recovery operation is concentrated at the head and tail ends, significantly improving the reuse rate of the device.

[0046] This application further proposes that the monitoring rod is also divided into three sections: upper, middle and lower. The upper section is provided with the screw 51, the lower section is provided with a threaded section 52, and the middle section is formed by multiple connecting rods spliced end to end in the form of threads. Similarly, the upper, middle and lower sections can be connected by using a threaded sleeve in combination with a screw.

[0047] Specifically, the length of the middle section of the monitoring rod can be selected as needed to match the length of the fixed rod. Since the lengths of the upper and lower sections remain unchanged, it can be ensured that the screw 51 abuts the upper recovery sleeve 1 while the threaded section 52 abuts the lower recovery sleeve.

[0048] The present application further proposes that a plurality of guide holes 4 are provided in the fixing rod 3 for the monitoring rod 5 to pass through.

[0049] Among them, the guiding hole 4 refers to a through-hole structure axially distributed along the inner wall of the fixing rod 3, which can be specifically realized by an annular bushing or a tubular channel. The inner diameter of the annular bushing is slightly larger than the outer diameter of the monitoring rod 5 to form a clearance fit. For example, the annular bushing can be embedded in the inner wall of the fixing rod 3 by a split structure, or a continuous channel can be directly machined when the fixing rod 3 is formed. The guiding holes 4 are evenly distributed along the length direction of the fixing rod 3, and the number thereof can be 3 - 5, and the distance between adjacent guiding holes 4 can be controlled within the range of 0.8 - 1.2 meters. This feature restricts the movement trajectory of the monitoring rod 5 through multiple points to prevent radial offset or torsion within the fixing rod 3.

[0050] Specifically, the guiding holes 4 are arranged at different positions inside the fixing rod 3, including the installation area of the deep anchor claw 2, the sliding area of the shallow anchor claw 6, and the moving area of the recovery sleeve 1; when the monitoring rod 5 moves axially within the fixing rod 3, its rod body sequentially passes through each guiding hole 4 to form a segmented sliding support. During the installation stage, the monitoring rod 5 maintains a straight movement through each guiding hole 4 to avoid friction with the inner wall of the fixing rod 3; during the recovery stage, when the monitoring rod 5 drives the recovery sleeve 1 to move, the guiding holes 4 can limit the radial sway of the recovery sleeve 1 to ensure the synchronous contraction of the shallow anchor claw 6 and the deep anchor claw 2. For example, when the monitoring rod 5 pushes the shallow anchor claw 6 upward, the guiding hole 4 located below the shallow anchor claw 6 can support the monitoring rod 5 to prevent the rod body from bending due to force and causing the recovery sleeve 1 to jam.

[0051] Compared with the prior art, the traditional roof separation indicator does not have a guiding structure, and the monitoring rod 5 directly contacts the inner wall of the fixing rod 3. During long-term use, friction scratches are likely to occur, resulting in an increase in moving resistance or even jamming. This solution forms multi-point positioning through the guiding holes 4, which not only reduces the contact area between the rod body and the pipe wall, but also compensates for installation errors through clearance fit, enabling the monitoring rod 5 to maintain smooth movement under complex working conditions. For example, when the rock formation undergoes non-uniform deformation, the fixing rod 3 may be slightly bent, but the guiding holes 4 can still maintain the straight movement path of the monitoring rod 5.

[0052] Through the above technical solutions, this application effectively solves the measurement error problem caused by the offset of the movement trajectory of the monitoring rod 5, ensuring the accuracy of the data collected by the displacement detector 7. The guiding hole 4 structure further reduces the mechanical wear between the monitoring rod 5 and the fixing rod 3, avoids the difficulty of recovery operation caused by frictional resistance, reduces the risk of rod body deformation at the same time, and prolongs the number of times the device can be reused. During the collaborative recovery process of multiple-layer anchor claws, the radial constraint provided by the guiding holes 4 can maintain the alignment state of the recovery sleeve 1 and the anchor claws, preventing misalignment and jamming when the anchor claws contract.

[0053] This application further proposes an integrated installation and recovery roof displacement monitoring method, which applies the integrated installation and recovery roof displacement monitoring device described in claim 5, including the following steps:

[0054] S1. Assemble the fixed rod and the monitoring rod according to the required length.

[0055] S2. Insert the monitoring rod from the bottom of the fixed rod, sequentially pass through the shallow anchor claw and the lower recovery sleeve below, and connect it to the shallow anchor claw.

[0056] S3. Install the fixed rod and the measuring rod into the measuring hole.

[0057] S4. Install the displacement monitor: The displacement monitor has a displacement measuring hole in the middle. Pass the bottom of the monitoring rod through the displacement measuring hole and fix the displacement monitor at the bottom end of the fixed rod. The fixed connection method of this part can adopt the method of flange matching bolts or other methods; as the rock formation moves, the monitoring rod moves in the displacement measuring hole of the monitor, and the displacement monitor can read the moving amount of the monitoring rod, that is, the roof separation amount.

[0058] S5. Recovery: First, take out the displacement monitor, then push up the monitoring rod, and the shallow anchor claw drives the lower recovery sleeve below until the lower recovery sleeve is pushed to the top of the lower guide groove, and the shallow anchor claw is retracted into the lower recovery sleeve; at this time, the threaded section of the monitoring rod just abuts against the threaded port of the lower recovery sleeve, and the screw rod abuts against the upper recovery sleeve. Then, turn the monitoring rod to connect the monitoring rod with the two recovery sleeves; then pull back to retract the deep anchor claw into the upper recovery sleeve.

[0059] Compared with the prior art, the traditional roof separation indicator uses a barbed anchor claw for irreversible installation, and the hole structure in the hole needs to be violently damaged during recovery. However, in this method, through the slidable recovery sleeve 1 and the spliced rod body, the deep and shallow anchor claws 6 can be completely retracted into the sleeve. During the recovery process, only the monitoring rod 5 needs to be pushed and pulled out in the reverse direction to keep the hole wall intact. At the same time, the modular splicing structure replaces the traditional integral installation rod, significantly reducing the difficulty of transportation and storage.

[0060] Through the above technical solutions, the present application realizes the full-process recycling of the roof separation monitoring device, avoiding the problem that the anchor claw is permanently fixed in the hole due to the barbed structure. The cooperation of the spliced rod body and the slidable sleeve enables the installation depth to be adjustable and the recovery operation to be controllable, eliminating the risk of secondary damage caused by the disassembly of the anchor claw in the traditional method. The separate design of the displacement monitor and the monitoring rod 5 further simplifies the equipment maintenance process, enabling the core monitoring components to be reused.

[0061] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An integrated installation and recovery roof displacement monitoring device, comprising a hollow fixed rod, a monitoring rod arranged in the fixed rod, and a displacement monitor connected to the bottom of the fixed rod. Deep anchor claws and shallow anchor claws are arranged at intervals along the length direction of the fixed rod. It is characterized in that: The shallow anchor claw is connected to the fixed rod by sliding along the length direction of the fixed rod, and the deep anchor claw is fixed on the fixed rod; two recovery sleeves are connected to the fixed rod by sliding along its own length direction, and the recovery sleeve slides to retract the deep anchor claw or the shallow anchor claw into the recovery sleeve, and the monitoring rod is used to connect with the recovery sleeve to drive it to slide.

2. The installation and recovery integrated roof displacement monitoring device according to claim 1, characterized in that: The fixing rod is provided with two sliding grooves along its length direction, and the recovery sleeve is slidably connected to the two sliding grooves respectively. The recovery sleeve is provided with a connecting plate, which passes through the sliding groove to extend into the interior of the fixing rod; the shallow anchor claw is also slidably connected to the sliding groove, and the shallow anchor claw part passes through the sliding groove to penetrate into the fixing rod.

3. The integrated installation and recovery roof displacement monitoring device according to claim 2, characterized in that: The top end of the monitoring rod is provided with a screw rod for connecting with the connecting plate, and the middle section of the monitoring rod is provided with a threaded section for connecting with the connecting plate and the shallow anchor claw; the outer diameter of the threaded section is larger than the outer diameter of the screw rod.

4. The integrated installation and recovery roof displacement monitoring device according to claim 3, characterized in that: The fixing rod is divided into three sections: upper, middle and lower. The upper section of the fixing rod is provided with the deep anchor claw, slide groove and recovery sleeve, and the lower section is provided with the slide groove, shallow anchor claw and recovery sleeve; the middle section is formed by multiple connecting rods spliced end to end in the form of threads.

5. The installation and recovery integrated roof displacement monitoring device according to claim 4, characterized in that: The monitoring rod is also divided into three sections: upper, middle and lower. The upper section is provided with the screw rod, the lower section is provided with the threaded section, and the middle section is formed by splicing multiple connecting rods end to end in the form of threads.

6. The integrated installation and recovery roof displacement monitoring device according to claim 5, wherein: A plurality of guide holes for the monitoring rods to pass through are provided in the fixing rod.

7. An integrated installation and recovery roof displacement monitoring method, which applies an integrated installation and recovery roof displacement monitoring device described in claim 5 above, is characterized in that The steps include: S1. Assemble the fixing rod and monitoring rod according to the required length; S2. Insert the monitoring rod from the bottom of the fixed rod, pass it through the shallow anchor claw, the recovery sleeve below, and connect it to the shallow anchor claw; S3, install the fixing rod and the measuring rod into the measuring hole; S4. Install the displacement monitor: The displacement monitor has a displacement measurement hole in the middle. The bottom of the monitoring rod is passed through the displacement measurement hole, and the displacement monitor is fixed to the bottom end of the fixed rod. The monitoring rod moves in the displacement measurement hole of the monitor as the rock layer moves. The displacement monitor can read the movement of the monitoring rod, that is, the amount of roof separation. S5. Recovery: first take out the displacement monitor, then push the monitoring rod upwards, and the shallow anchor claw drives the recovery sleeve below until the lower recovery sleeve is pushed to the top of the lower guide groove, and the shallow anchor claw is retracted into the lower recovery sleeve; at this time, the threaded section of the monitoring rod just hits the threaded mouth of the lower recovery sleeve, and the screw abuts the upper recovery sleeve, then, twist the monitoring rod to connect the monitoring rod with the two recovery sleeves; then pull back to recover the deep anchor claw into the upper recovery sleeve.

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