A sliding positioning type layered settlement monitoring device and a use method thereof

Abstract

The application discloses a sliding positioning type layered settlement monitoring device and a use method thereof. The monitoring device comprises an inspection groove, a pipeline channel interface and a guide pipe joint are arranged on the side wall of the inspection groove, a positioning guide pipe is arranged at the guide pipe joint, a sensor assembly capable of adjusting the position is arranged in the positioning guide pipe, a guide pipe fixing assembly is arranged on the side wall, and the guide pipe fixing assembly is connected with a movable measuring rod. The use method comprises the following steps: lofting for settlement monitoring; drilling a hole at a monitoring point, slotting a pipeline position, digging a pit at an inspection position, supporting and pouring; installing equipment in the hole and backfilling the drilled hole; connecting the positioning guide pipe, the pipeline channel and the inspection groove and backfilling; installing a sensor assembly in the positioning guide pipe and ensuring that the sensor assembly can slide along the positioning guide pipe; and regularly maintaining and replacing the sensor assembly through the inspection groove. The application can maintain, maintain and replace the sensor assembly in the inspection groove, so that the monitoring point can meet the long-period monitoring requirement.

Description

Technical Field

[0001] This invention belongs to the field of stratified settlement monitoring technology for embankment roadbed foundations, specifically relating to a sliding positioning stratified settlement monitoring device and its usage method. Background Technology

[0002] Traditional layered settlement monitoring typically employs single-point or multi-point settlement gauges. These gauges suffer from several technical problems: faulty sensors are difficult to repair or replace after being embedded in the soil; in soft soil and loose soil areas, the deep and thick compression layer makes settlement prediction difficult; and when the actual cumulative settlement of the roadbed exceeds the sensor's range, the excess deformation data cannot be obtained; when the compression layer consolidates slowly and a long monitoring cycle is required, the lifespan of general monitoring sensors is insufficient, and while imported high-end sensors offer excellent performance and lifespan, their high cost limits widespread use; and the embedded installation method does not provide the necessary conditions for performance testing and calibration of the monitoring sensors after a period of use. Summary of the Invention

[0003] This invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a sliding positioning layered settlement monitoring device and its usage method.

[0004] The technical solution of the present invention is: a sliding positioning type stratified settlement monitoring device, including a maintenance tank, a pipeline channel interface and a conduit joint provided on the side wall of the maintenance tank, a positioning conduit provided at the conduit joint, a sensor assembly capable of position adjustment provided in the positioning conduit, a pull rope reversing device fixing panel provided at the end of the positioning conduit, a conduit fixing assembly provided on the side wall of the positioning conduit, and the conduit fixing assembly connected to a movable measuring rod.

[0005] The movable measuring rod is a telescopic rod, which is embedded in the fixed measuring rod and can freely extend and retract in the axial direction. The bottom anchoring end of the fixed measuring rod is located at the bottom of the monitoring hole.

[0006] The positioning conduit is provided with a driving component and a guiding component. The driving component drives the movement of the sensor component, and the guiding component guides the movement of the sensor component.

[0007] The guiding component includes a pulley guide groove provided on the inner wall of the positioning guide tube. The pulley guide grooves are arranged in pairs, and two sets of pulley guide grooves are provided in the positioning guide tube. The line connecting a single set of pulley guide grooves passes through the axis of the positioning guide tube.

[0008] The sensor assembly includes a sliding structure that slides along a groove.

[0009] The drive assembly includes an outgoing pull rope and an incoming pull rope. The outgoing pull rope is connected to the side of the sensor assembly facing the maintenance slot and can pull the sensor assembly toward the maintenance slot. The incoming pull rope is connected to the side of the sensor assembly facing the pull rope reversing device fixing panel and pulls the sensor assembly toward the monitoring end of the positioning guide tube.

[0010] A protective shell for the pull rope reversing device is provided on one side of the fixed panel of the pull rope reversing device. A rotatable pull rope reversing pulley is provided in the protective shell of the pull rope reversing device. The lead pull rope is sleeved on the pull rope reversing pulley to perform the reversal operation, so that both the lead pull rope and the lead pull rope are pulled on the side of the maintenance slot.

[0011] The catheter fixing assembly includes a lower catheter fixing buckle and an upper catheter fixing buckle, which are fitted onto the outer wall of the positioning catheter monitoring end.

[0012] A locking screw is provided on the outer wall of the lower part of the conduit fixing buckle, and the locking screw is connected to the top of the movable measuring rod.

[0013] A method for using a sliding positioning type stratified settlement monitoring device includes the following steps:

[0014] A. Lay out the measurement points and wiring for settlement monitoring;

[0015] B. Drill holes at the monitoring points and carry out civil construction such as trenching and slotting.

[0016] C. Install the components inside the holes, and backfill after installation;

[0017] D. Install positioning conduits, pipeline channels, and maintenance slots;

[0018] E. Install the sensor assembly inside the positioning conduit and ensure that the sensor assembly can slide along the positioning conduit;

[0019] F. Perform regular maintenance and replacement of sensor assemblies through the inspection slot.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention provides a moving internal space for the sensor assembly through a positioning conduit, while also providing a guiding foundation. Fixed pulleys and spring-loaded pulleys on the outside of the sensor assembly ensure that the sensor assembly can slide non-contactly in the positioning conduit. A rope-directing pulley redirects the lead-in rope to the lead-out rope side, thereby enabling the sensor assembly to be maintained, serviced, and replaced in the maintenance slot.

[0022] This invention, through its structure that facilitates maintenance, upkeep, and replacement, enables monitoring points to meet the requirements of long-term monitoring, ensuring that monitoring data is continuous, accurate, and reliable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 yes Figure 1 Exploded view of the structure of part A in the middle;

[0025] Figure 3 yes Figure 2 Exploded view of the structure of section B;

[0026] Figure 4 yes Figure 2 Exploded view of the structure of section C;

[0027] Figure 5 This is a diagram illustrating the method of using the present invention;

[0028] in:

[0029] 1. Protective cover plate 2. Positioning guide tube

[0030] 3. Pipeline access channels; 4. Maintenance trenches

[0031] 5. Conduit fitting; 6. Load-bearing flange

[0032] 7 Backfill Inlet 8 Communication Line

[0033] 9 Connecting pipes 10 Reserved pull rope

[0034] 11 Pipeline channel interface 12 Movable probe

[0035] 13 Fixed measuring rod 14 Bottom anchoring end

[0036] 15 Monitoring holes; 16 Load-bearing flange fixing holes

[0037] 17 Pulley guide groove 18 Rope reversing device fixing nut

[0038] 19 Lead out the pull rope 20 Lead in the pull rope

[0039] 21 Pulley positioning hole 22 Sensor assembly

[0040] 23. Pull rope end fixing nut; 24. Bottom pulley

[0041] 25. Lower part of the conduit fixing clip; 26. Clip fixing screw.

[0042] 27 Upper part of the conduit fixing clip; 28 Clip connecting nut.

[0043] 29 Top pulley 30 Pulley spring

[0044] 31 Side pulley 32 Sensor positioning plug

[0045] 33 Cable guide hole; 34 Cable reversing pulley

[0046] 35 Protective housing for pull rope reversing device 36 Protective housing fixed side wings

[0047] 37 Cable reversing device fixing panel 38 Fixing panel hole Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0049] like Figures 1 to 5 As shown, a sliding positioning type stratified settlement monitoring device includes a maintenance tank 4. The side wall of the maintenance tank 4 is provided with a pipeline channel interface 11 and a conduit joint 5. A positioning conduit 2 is provided at the conduit joint 5. A sensor assembly 22 capable of position adjustment is provided in the positioning conduit 2. A rope reversing device fixing panel 37 is provided at the end of the positioning conduit 2. A conduit fixing assembly is provided on the side wall of the positioning conduit 2. The conduit fixing assembly is connected to a movable measuring rod 12.

[0050] The movable measuring rod 12 is a telescopic rod. The movable measuring rod 12 is embedded in the fixed measuring rod 13 and can freely extend and retract in the axial direction. The bottom anchoring end 14 of the fixed measuring rod 13 is arranged at the bottom of the monitoring hole 15.

[0051] The positioning conduit 2 is provided with a driving component and a guiding component. The driving component drives the movement of the sensor component 22, and the guiding component guides the movement of the sensor component 22.

[0052] The guiding component includes a pulley guide groove 17 provided on the inner wall of the positioning guide tube 2. The pulley guide grooves 17 are in pairs, and two sets of pulley guide grooves 17 are provided in the positioning guide tube 2. The line connecting a single set of pulley guide grooves 17 passes through the axis of the positioning guide tube 2.

[0053] The sensor assembly 22 is provided with a movable structure that slides along a groove.

[0054] The drive assembly includes an outgoing pull rope 19 and an incoming pull rope 20. The outgoing pull rope 19 is connected to the side of the sensor assembly 22 facing the maintenance slot 4, and the outgoing pull rope 19 can pull the sensor assembly 22 toward the maintenance slot 4. The incoming pull rope 20 is connected to the side of the sensor assembly 22 facing the pull rope reversing device fixing panel 37, and the incoming pull rope 20 pulls the sensor assembly 22 toward the monitoring end of the positioning guide tube 2.

[0055] A protective shell 35 for the pull rope reversing device is provided on one side of the fixed panel 37 of the pull rope reversing device. A rotatable pull rope reversing pulley 34 is provided in the protective shell 35. The lead-in pull rope 20 is sleeved on the pull rope reversing pulley 34 to perform the reversal operation, so that both the lead-in pull rope 20 and the lead-out pull rope 19 are pulled on the side of the maintenance slot 4.

[0056] The catheter fixing assembly includes a lower catheter fixing buckle 25 and an upper catheter fixing buckle 27, which are fixed to the outer wall of the monitoring end of the positioning catheter 2.

[0057] A locking screw 26 is provided on the outer wall of the lower part 25 of the conduit fixing buckle, and the locking screw 26 is connected to the top of the movable measuring rod 12.

[0058] like Figure 1 As shown, specifically, adjacent maintenance tanks 4 are connected by pipeline channels 3, which facilitates the connection of communication lines 8 and connecting pipes 9 in pipeline channels 3 to sensor assembly 22.

[0059] Specifically, the top of the inspection slot 4 is open, and a protective cover 1 is provided at the open end to protect it by fastening. The inspection slot 4 and the protective cover 1 form a sealed protective space.

[0060] Specifically, a load-bearing flange 6 is installed at the backfill inlet 7.

[0061] like Figure 2 As shown, for Figure 1 The structure of part A is described in detail. The pipeline channel 3 is equipped with the main pipe of the communication line 8 and the connecting pipe 9. The lead-out ends of the communication line 8 and the connecting pipe 9 are connected to one side of the sensor assembly 22, so that the sensor assembly 22 can perform monitoring operations normally.

[0062] Specifically, a reserved pull rope 10 is provided in the maintenance slot 4. The reserved pull rope 10 is connected to the lead-out pull rope 19 and the lead-in pull rope 20, so that maintenance personnel can move the sensor assembly 22 in the maintenance slot 4.

[0063] Specifically, a bearing flange fixing hole 16 is formed in the bearing flange 6, and the bearing flange 6 is fixed through the bearing flange fixing hole 16.

[0064] Specifically, the pulley guide groove 17 on the inner wall of the positioning guide tube 2 is parallel to the axis of the positioning guide tube 2, and the pulley guide groove 17 guides the movement of the sensor assembly 22 along the axial direction.

[0065] Specifically, the rope reversing device fixing nut 18 fixes the rope reversing device fixing panel 37 to the monitoring end of the positioning guide tube 2, thereby making the positioning guide tube 2 a semi-closed space. The rope reversing device fixing panel 37 not only limits the movement of the sensor assembly 22, but also provides a foundation for the installation of the rope reversing pulley 34.

[0066] like Figure 3 As shown, the sensor in the sensor assembly 22 is cylindrical. One end of the sensor is connected to the lead-out pull rope 19, the communication line 8, and the connecting pipe 9, while the other end is connected to the lead-in pull rope 20. To ensure the stability of the sensor's movement, the connection point of the lead-out pull rope 19 and the lead-in pull rope 20 is through the sensor's axis. Both the lead-out pull rope 19 and the lead-in pull rope 20 are fixed by the pull rope end fixing nut 23.

[0067] Specifically, a sensor positioning plug 32 is also provided at the point where the pull rope 20 is introduced, and the sensor positioning plug 32 can contact the pull rope reversing device.

[0068] Specifically, a pulley positioning hole 21 is formed on the side wall of the sensor, and the extension line of the pulley positioning hole 21 passes through the axis of the sensor.

[0069] Specifically, the movable structure that slides along the groove is a pulley, which includes a bottom pulley 24, a top pulley 29, and a side pulley 31. The bottom pulley 24 is a fixed pulley, and the top pulley 29 and the side pulley 31 are spring-loaded pulleys.

[0070] Specifically, the pulley positioning hole 21 is a countersunk hole, and the support rod of the bottom pulley 24 is fully inserted into the bottom pulley positioning hole 21, so that there is no radial displacement between the bottom pulley 24 and the sensor.

[0071] Specifically, the support rods of the top pulley 29 and the side pulley 31 are inserted into the corresponding pulley positioning holes 21, and a pulley spring 30 is fitted on the support rod. One end of the pulley spring 30 is in contact with the pulley, and the other end is in contact with the outer wall of the sensor.

[0072] By using a fixed pulley in one direction, namely the bottom pulley 24, and spring-loaded pulleys in three directions, namely the top pulley 29 and the side pulleys 31, all four sets of pulleys can slide along the pulley guide groove 17, while ensuring that the sensor and the positioning guide tube 2 do not come into contact.

[0073] The support rods of the top pulley 29 and the side pulley 31 can extend and retract along the pulley positioning hole 21 under the action of the pulley spring 30.

[0074] Specifically, both ends of the lower part 25 and the upper part 27 of the conduit fixing buckle are formed into bent wing plates. After the wing plates are spliced ​​together, they are fixed by the buckle connecting nut 28. The arc-shaped parts of the lower part 25 and the upper part 27 of the conduit fixing buckle are spliced ​​together and fastened to the outer wall of the monitoring end of the positioning conduit 2.

[0075] Specifically, the axis of the snap-fit ​​screw 26 passes through the axis of the positioning guide tube 2, and the free end of the snap-fit ​​screw 26 is connected to the movable measuring rod 12.

[0076] like Figure 4 As shown, specifically, the fixing panel 37 of the pull rope reversing device is stepped, with its small diameter section inserted into the monitoring end of the positioning guide tube 2, and its large diameter section pressing against the monitoring end of the positioning guide tube 2. In order to connect the positioning guide tube 2 and the fixing panel 37 of the pull rope reversing device, a fixing panel hole 38 is formed in the fixing panel 37 of the pull rope reversing device, and the fixing panel hole 38 is fixed in conjunction with the fixing nut 18 of the pull rope reversing device.

[0077] Preferably, the fixing panel holes 38 are four arranged in a circumferential manner, thereby achieving a firm four-point fixation.

[0078] Specifically, the protective shell 35 of the pull rope reversing device is hollow inside, providing space for the installation of the pull rope reversing pulley 34. The bottom has symmetrically distributed protective shell fixing wings 36, which realize the connection and fixation of the protective shell 35 of the pull rope reversing device and the fixing panel 37 of the pull rope reversing device.

[0079] To prevent the pull rope 20 from disengaging from the pull rope reversing pulley 34, the protective housing 35 of the pull rope reversing device is provided with two pull rope guide holes 33. The extension line of the pull rope guide hole 33 is tangent to the annular groove of the pull rope reversing pulley 34. Before the pull rope 20 enters the pull rope reversing pulley 34, it passes through one pull rope guide hole 33. After the pull rope 20 exits from the pull rope reversing pulley 34, it passes through the other pull rope guide hole 33.

[0080] After the direction change of the pull rope reversing pulley 34, the lead-in pull rope 20 and the lead-out pull rope 19 can be operated on the same side. Pulling the lead-out pull rope 19, the sensor assembly 22 can move towards the maintenance slot 4, and pulling the lead-in pull rope 20, the sensor assembly 22 can move away from the maintenance slot 4 and finally reach the monitoring end of the positioning guide tube 2.

[0081] Specifically, the pulley guide grooves 17 in the positioning guide tube 2 are arranged in pairs, with one pair arranged horizontally and the other pair arranged vertically, forming a cross shape.

[0082] Specifically, there are two bottom pulleys 24 and two top pulleys 29, and four side pulleys 31, arranged in pairs on both sides of the sensor.

[0083] Specifically, after the sensor assembly 22 is installed with pulleys and enters the positioning guide tube 2, the six sets of pulley springs 30 are under pressure, and the eight sets of pulleys are in close contact with the bottom of the pulley guide groove 17 of the positioning guide tube 2. After the positioning guide tube 2 is deformed by force, the vertical position of the sensor assembly 22 relative to the bottom slide groove remains unchanged, and the eight sets of pulleys are still in close contact with the bottom of the slide groove of the positioning guide tube 2.

[0084] Specifically, a pull rope end fixing connector is provided at the center of one side of the sensor assembly 22. The pull rope 20 is connected and fixed by this connector and then introduced into the upper fixed pull rope guide hole 33. After passing around the pull rope deflector pulley 34, it is led out from the lower pull rope guide hole 33. A pull rope end fixing connector is provided at the center of the other side. The lower part of this side of the sensor assembly 22 is a liquid connecting pipe connector, next to the liquid connecting pipe connector is an exhaust valve, and the upper part is a communication cable connector.

[0085] After the pipeline network is established, the sensor assembly 22 is purged, vented, and debugged. The sensor assembly 22 is installed in a certain direction at the inspection end of the positioning conduit 2. The sensor assembly 22 is transported from the inspection end of the positioning conduit 2 to the monitoring end of the positioning conduit 2 by leading out the pull rope 19, introducing the pull rope 20, and the pull rope reversing pulley 34. The monitoring end of the positioning conduit 2 is located above the monitoring hole 15. The depth of the monitoring hole 15 is determined according to the thickness of the monitoring layer and is arranged from shallow to deep or from deep to shallow.

[0086] More specifically, the first sensor assembly 22 is not drilled below, and the bearing flange 6 is directly fixed below the monitoring end of the positioning conduit 2. After the other sensor assemblies 22 are delivered to the monitoring end of the positioning conduit 2, the bearing flange 6 is fixed to the top of the movable measuring rod 12 through the lower part 25 of the conduit fixing buckle, the upper part 27 of the conduit fixing buckle, and the buckle fixing screw 26. The bottom of the movable measuring rod 12 is embedded in the fixed measuring rod 13. The bottom of the fixed measuring rod 13 is connected to the bottom anchor end 14. The fixed measuring rod 13 is composed of multiple measuring rods connected by a joint.

[0087] More specifically, the lower part 25 and the upper part 27 of the conduit fixing clip are connected to the monitoring end of the positioning conduit 2 by a clip connecting nut 28. The lower part 25 of the conduit fixing clip is welded with a clip fixing screw 26. In the case of drilling, the clip fixing screw 26 is inserted into the bearing flange 6 and then fixed to the top of the movable measuring rod 12 by a threaded connection; in the case of no drilling, the clip fixing screw 26 is inserted into the bearing flange 6 and then locked with a nut.

[0088] A method for using a sliding positioning type stratified settlement monitoring device includes the following steps:

[0089] A. Lay out the measurement points and wiring for settlement monitoring;

[0090] B. Drill holes at the monitoring points and carry out civil construction such as trenching and slotting.

[0091] C. Install the components inside the holes, and backfill after installation;

[0092] D. Install positioning conduit 2, pipeline channel 3 and maintenance slot 4;

[0093] E. Install sensor assembly 22 inside positioning conduit 2, and ensure that sensor assembly 22 can slide along positioning conduit 2;

[0094] F. Perform regular maintenance and replacement of sensor assembly 22 through inspection slot 4.

[0095] Specifically, step F involves the periodic maintenance and replacement of sensor assembly 22 via inspection slot 4. The specific process is as follows:

[0096] First, the inspection end of each positioning conduit 2 is connected to the inspection slot 4. The inspection slots 4 are connected to each other through the pipeline channel 3. The top of the inspection slot 4 is covered with a protective cover plate 1. A reserved pull rope 10 is placed in the inspection slot 4.

[0097] Then, when the sensor assembly 22 needs to be repaired or replaced, the pull rope 19 is pulled. At this time, the pull rope 20 moves towards the monitoring end of the positioning conduit 2, the reserved pull rope 10 enters the positioning conduit 2 and decreases, the pull rope 19 exits the positioning conduit and increases, and the other pipelines in the positioning conduit 2 are left in the maintenance slot 4 along with the pull rope 19 until the sensor assembly 22 is pulled out of the positioning conduit 2.

[0098] Finally, after the inspection or replacement is completed, the sensor assembly 22 is installed at the inspection end of the positioning conduit 2. By pulling the lead-in pull rope 20, the lead-out pull rope 19 moves towards the monitoring end of the positioning conduit 2. The number of lead-out pull ropes 19 reserved in the inspection groove 4 decreases, and the number of lead-in pull ropes 20 increases. Other pipelines enter the positioning conduit 2 along with the lead-in pull rope 20 until the sensor assembly 22 is delivered to the monitoring end of the positioning conduit 2. At this time, the sensor positioning plug 32 of the sensor assembly 22 contacts the outer end of the upper pull rope guide hole 33.

[0099] This invention provides a moving internal space for the sensor assembly through a positioning conduit, while also providing a guiding foundation. Fixed pulleys and spring-loaded pulleys on the outside of the sensor assembly ensure that the sensor assembly can slide non-contactly in the positioning conduit. A rope-directing pulley redirects the lead-in rope to the lead-out rope side, thereby enabling the sensor assembly to be maintained, serviced, and replaced in the maintenance slot.

[0100] This invention, through its structure that facilitates maintenance, upkeep, and replacement, enables monitoring points to meet the requirements of long-term monitoring, ensuring that monitoring data is continuous, accurate, and reliable.

Claims

1. A sliding positioning type stratified settlement monitoring device, comprising a maintenance tank (4), characterized in that: The inspection tank (4) is provided with a pipeline channel interface (11) and a conduit connector (5) on its side wall. A positioning conduit (2) is provided at the conduit connector (5). A sensor assembly (22) capable of position adjustment is provided in the positioning conduit (2). A pull rope reversing device fixing panel (37) is provided at the end of the positioning conduit (2). A conduit fixing assembly is provided on the side wall of the positioning conduit (2). The conduit fixing assembly is connected to the movable measuring rod (12). The sensor assembly (22) is provided with a movable structure that slides along the groove; The sliding structure along the groove is a pulley, which includes a bottom pulley (24), a top pulley (29), and a side pulley (31). The bottom pulley (24) is a fixed pulley, and the top pulley (29) and the side pulley (31) are spring-loaded pulleys. The sensor in the sensor assembly (22) is cylindrical; A pulley positioning hole (21) is formed on the side wall of the sensor, and the extension line of the pulley positioning hole (21) passes through the axis of the sensor; The pulley positioning hole (21) is a countersunk hole, and the support rod of the bottom pulley (24) is fully inserted into the bottom pulley positioning hole (21). There is no radial displacement between the bottom pulley (24) and the sensor. The support rods of the top pulley (29) and the side pulley (31) are inserted into the corresponding pulley positioning holes (21), and a pulley spring (30) is sleeved on the support rod. One end of the pulley spring (30) is in contact with the pulley, and the other end is in contact with the outer wall of the sensor. By using a fixed pulley in one direction, namely the bottom pulley (24), and spring-loaded pulleys in three directions, namely the top pulley (29) and the side pulleys (31), all four sets of pulleys can slide along the pulley guide groove (17), ensuring that the sensor and the positioning guide tube (2) do not contact each other. The support rods of the top pulley (29) and the side pulley (31) can extend and retract along the pulley positioning hole (21) under the action of the pulley spring (30).

2. The sliding positioning type stratified settlement monitoring device according to claim 1, characterized in that: The movable measuring rod (12) is a telescopic rod. The movable measuring rod (12) is embedded in the fixed measuring rod (13) and can freely extend and retract in the axial direction. The bottom anchoring end (14) of the fixed measuring rod (13) is arranged at the bottom of the monitoring hole (15).

3. The sliding positioning type stratified settlement monitoring device according to claim 1, characterized in that: The positioning conduit (2) is provided with a driving component and a guiding component. The driving component drives the movement of the sensor component (22), and the guiding component guides the movement of the sensor component (22).

4. The sliding positioning type stratified settlement monitoring device according to claim 3, characterized in that: The guiding component includes a pulley guide groove (17) provided on the inner wall of the positioning guide tube (2). The pulley guide grooves (17) are in pairs. The positioning guide tube (2) is provided with two sets of pulley guide grooves (17). The line connecting a single set of pulley guide grooves (17) passes through the axis of the positioning guide tube (2).

5. The sliding positioning type stratified settlement monitoring device according to claim 3, characterized in that: The drive assembly includes an outgoing pull rope (19) and an incoming pull rope (20). The outgoing pull rope (19) is connected to the side of the sensor assembly (22) facing the inspection slot (4), and the outgoing pull rope (19) can pull the sensor assembly (22) toward the inspection slot (4). The incoming pull rope (20) is connected to the side of the sensor assembly (22) facing the pull rope reversing device fixing panel (37), and the incoming pull rope (20) pulls the sensor assembly (22) toward the monitoring end of the positioning guide tube (2).

6. The sliding positioning type stratified settlement monitoring device according to claim 5, characterized in that: A protective shell (35) for the pull rope reversing device is provided on one side of the fixed panel (37) of the pull rope reversing device. A rotatable pull rope reversing pulley (34) is provided in the protective shell (35). The lead pull rope (20) is sleeved on the pull rope reversing pulley (34) to perform the reversal operation, so that the lead pull rope (20) and the lead pull rope (19) are both pulled on the side of the inspection groove (4).

7. A sliding positioning type stratified settlement monitoring device according to claim 6, characterized in that: The catheter fixing assembly includes a lower part (25) of the catheter fixing buckle and an upper part (27) of the catheter fixing buckle, which are fixed to the outer wall of the monitoring end of the positioning catheter (2).

8. The sliding positioning type stratified settlement monitoring device according to claim 7, characterized in that: A locking screw (26) is provided on the outer wall of the lower part (25) of the conduit fixing buckle, and the locking screw (26) is connected to the top of the movable measuring rod (12).

9. The method of using the sliding positioning stratified settlement monitoring device according to claim 1, characterized in that: Includes the following steps: A. Lay out the measurement points and wiring for settlement monitoring; B. Drill holes at the monitoring points, and simultaneously dig trenches and slots; C. Install the components inside the holes, and backfill after installation; D. Install the positioning conduit (2), pipeline channel (3) and maintenance slot (4); E. Install the sensor assembly (22) inside the positioning conduit (2) and ensure that the sensor assembly (22) can slide along the positioning conduit (2); F. Perform regular maintenance and replacement of the sensor assembly (22) through the inspection slot (4).

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