A GNSS-based high-position slope creep monitoring device and a use method thereof

Abstract

The application relates to the field of monitoring equipment, in particular to a high-position side slope creep monitoring equipment based on GNSS and a use method thereof, which comprises a GNSS signal base station, a plug-in assembly and a creep monitoring module, the GNSS signal base station is fixed at the top of a concrete side slope; the plug-in assembly is welded at the bottom of the GNSS signal base station, the creep monitoring module is plugged into the plug-in assembly and is limited by the plug-in assembly, the creep monitoring module is used for monitoring the creep of a soil layer, the monitoring data can accurately reflect the phased creep characteristics of the initial slow and later accelerated stages of the interlayer soil layer, the blank of accurate monitoring in a specific area is filled, and core data support is provided for the pre-judgment of side slope instability risks.

Description

Technical Field

[0001] This invention relates to the field of monitoring equipment, specifically to a GNSS-based high-altitude slope creep monitoring device and its usage method. Background Technology

[0002] In slope protection engineering, artificially constructed multi-level slope protection is a common technical means to suppress the overall sliding of slopes. It can effectively reduce the risk of overall slope instability and improve the stability of slope engineering by limiting and constraining the slope rock and soil through segmented structure.

[0003] However, due to the influence of geological structure, groundwater activity, external loads and environmental factors, the interlayer soil between multi-level slope protection will still undergo slow deformation. Moreover, under the segmented restriction of the slope protection, the sliding of the soil layer in this area is not uniform, but shows a typical creep trend of slow deformation in the initial stage and gradual acceleration over time. If the deformation data in this creep process, especially the displacement changes in the acceleration stage, is not captured in time, it is very easy to cause the slope structure to become unbalanced and locally fail, eventually leading to slope instability and collapse, causing property damage or even casualties. Existing slope monitoring technologies mostly focus on monitoring the overall condition of the slope or the slope protection itself, lacking precise creep monitoring methods for the interlayer soil between slope protections, making it difficult to meet the needs of real-time tracking and risk prediction of creep trends in this specific area. Therefore, a GNSS-based high-level slope creep monitoring device and its usage method are proposed. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a GNSS-based high-level slope creep monitoring device and its usage method.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a GNSS-based high-level slope creep monitoring device, comprising a GNSS signal base station, a plug-in component, and a creep monitoring module;

[0006] The GNSS signal base station is fixed to the top of the concrete slope, and the plug-in assembly is welded to the bottom of the GNSS signal base station. The creep monitoring module is plugged into the plug-in assembly and is constrained by the plug-in assembly. The creep monitoring module is used to monitor the creep of the soil layer. The creep monitoring module includes a sub-plug-in block, an outer protective shell, creep monitoring components, and a protective cover plate. The sub-plug-in block is plugged into the mother plug-in block, and the outer protective shell is welded to the surface of the sub-plug-in block. Two sets of creep monitoring components are respectively installed on the two sides of the inner wall of the outer protective shell. The protective cover plate is plugged into the inside of one side of the outer protective shell. After the outer protective shell is inserted into the soil layer, the protective cover plate can be pulled out to allow the creep monitoring component to contact the soil layer and enter the working state.

[0007] Preferably, the plug-in assembly includes a female plug block and a locking bolt. The female plug block is welded to the bottom of the GNSS signal base station, and the locking bolt is threadedly connected to the center of the female plug block.

[0008] Preferably, the outer protective shell includes an outer shell body and a fixing block. The outer shell body is welded to the surface of the sub-plug block. The top of the outer shell body is flush with the top of the sub-plug block. The middle part of the sub-plug block and the upper part of the outer shell body are provided with through holes that cooperate with locking bolts. The two sets of fixing blocks are respectively welded to the middle positions of the two sides of the inner wall of the outer shell body.

[0009] Preferably, the bottom of the outer shell body is angled, and slots are provided on one side of the inner side of the outer protective shell, into which the protective cover is inserted.

[0010] Preferably, both the sub-plug block and the outer shell body have threaded holes for engaging locking bolts, and the locking bolts restrict the placement of the outer protective shell through the threaded holes.

[0011] Preferably, the creep monitoring component includes a sliding box, which is sleeved on the outside of the fixed block. A set of return springs is installed at both ends of the sliding box, and the ends of the two sets of return springs facing the fixed block are connected to the fixed block. A support plate is welded to the back of the sliding box, and mating grooves are welded to both ends of the support plate. Spring sheets are installed inside the two sets of mating grooves, and a creep sensing plate is installed between the two sets of spring sheets. A position sensor is installed on one side of each set of mating grooves, with the position sensor facing the creep sensing plate.

[0012] A method for using a GNSS-based high-altitude slope creep monitoring device includes the following steps:

[0013] Step S1: Press the two sets of creep monitoring components onto the inner walls of the outer protective shell respectively, insert the protective cover along the slot on one side of the outer protective shell and push it to the bottom to complete the sealing of the outer protective shell, so that the creep monitoring components are confined in the closed space.

[0014] Step S2: Align the assembled creep monitoring module's sub-plug block with the GNSS signal base station's bottom plug-in component and insert it to the preset depth. At this point, the outer protective shell is completely submerged in the soil. Rotate the locking bolt so that it passes through the center hole of the female plug block and engages with the threaded hole inside the sub-plug block and the outer shell body, and tighten it. The outer protective shell is then firmly fixed.

[0015] Step S3: After the equipment is fixed and the surrounding soil is stable, pull the protective cover to remove it from the outer protective shell. As the protective cover is removed, it releases the restriction on the creep monitoring component.

[0016] The creep sensor is pushed out of the protective cover under the elastic thrust of the spring. The creep sensor is in close contact with the surface of the slope soil layer and maintains its initial fixed state under the dual constraint of the spring and the soil layer, thus completing the initial arrangement of the monitoring components.

[0017] Step S4: Activate the position sensor of the GNSS signal base station and creep monitoring component, set the monitoring cycle of the position sensor, and start creep data acquisition. When vertical creep occurs in the soil layer, the creep sensor moves down synchronously with the soil layer. The position sensor monitors the position change data of the creep sensor in real time and transmits the data to the GNSS signal base station.

[0018] Preferably, in step S3, before removing the protective cover, the creep monitoring module is left to stand in the soil for at least 24 hours.

[0019] Preferably, the insertion depth of the creep monitoring module is not less than 1.5 meters, and the sensing accuracy of the creep monitoring module is in millimeters.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The invention employs a dual-unit monitoring module design for creep monitoring, which can simultaneously capture the vertical and horizontal creep displacement of the soil layer. Combined with an insertion depth of not less than 1.5 meters and a 24-hour static stabilization step, it ensures that the monitoring data can accurately reflect the stage-specific creep characteristics of the interlayer soil layer, from initial slow creep to later acceleration. Furthermore, the millimeter-level sensing accuracy effectively captures minute deformations, filling the gap in precise monitoring of specific areas and providing core data support for predicting slope instability risks.

[0022] 2. This invention integrates GNSS signal transmission with modular structural design, which not only realizes real-time remote transmission of monitoring data, avoiding the problem of data lag in traditional monitoring, but also simplifies the equipment installation process through the coordinated design of plug-in components, the oblique configuration of the outer protective shell, and the protective cover plate. At the same time, it reduces the interference of loose soil on monitoring, prevents soil impurities from entering the components, adapts to the complex environment of multi-level slope protection, reduces equipment maintenance costs and the frequency of manual intervention, and improves the practicality and stability of slope creep monitoring. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the rotating support frame of the present invention;

[0025] Figure 3 This is a schematic diagram of the working state of the present invention;

[0026] Figure 4 This is a schematic diagram of the welding adjustment assembly structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the pusher cart structure of the present invention;

[0028] Figure 6 This is a schematic diagram showing the spring setting position according to the present invention;

[0029] Figure 7 This is a schematic diagram illustrating the usage state of the present invention.

[0030] The numbers in the diagram represent:

[0031] 1. GNSS signal base station; 2. Connector assembly; 21. Female connector block; 22. Locking bolt; 3. Creep monitoring module; 31. Female connector block; 32. Outer protective shell; 321. Outer shell body; 322. Fixing block; 33. Creep monitoring assembly; 331. Sliding box; 332. Return spring; 333. Support plate; 334. Connecting groove; 335. Spring; 336. Creep sensing plate; 337. Position sensor; 34. Protective cover plate. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0033] Example:

[0034] like Figures 1-7 As shown, the present invention provides a GNSS-based high-level slope creep monitoring device, including a GNSS signal base station 1, a plug-in component 2, and a creep monitoring module 3;

[0035] GNSS signal base station 1 is fixed to the top of the concrete slope;

[0036] The plug-in assembly 2 is welded to the bottom of the GNSS signal base station 1. The plug-in assembly 2 includes a female plug-in block 21 and a locking bolt 22. The female plug-in block 21 is welded to the bottom of the GNSS signal base station 1, and the locking bolt 22 is threadedly connected to the center of the female plug-in block 21.

[0037] The creep monitoring module 3 is inserted into and constrained by the insertion component 2. The creep monitoring module 3 includes a sub-insertion block 31, an outer protective shell 32, creep monitoring components 33, and a protective cover plate 34. The sub-insertion block 31 is inserted into the female insertion block 21. The outer protective shell 32 is welded to the surface of the sub-insertion block 31. Two sets of creep monitoring components 33 are respectively installed on the two sides of the inner wall of the outer protective shell 32. The protective cover plate 34 is inserted into the inner side of the outer protective shell 32. The two sets of creep monitoring components 33 can perform cross-validation of data.

[0038] The outer protective shell 32 includes an outer shell body 321 and fixing blocks 322. The outer shell body 321 is welded to the surface of the sub-plug block 31. The top of the outer shell body 321 is flush with the top of the sub-plug block 31. The middle part of the sub-plug block 31 and the upper part of the outer shell body 321 are provided with through holes that cooperate with the locking bolts 22. The two sets of fixing blocks 322 are respectively welded to the middle positions on both sides of the inner wall of the outer shell body 321. The bottom of the outer shell body 321 is inclined. During the insertion process, the inclined configuration of the bottom of the outer shell body 321 can reduce the insertion resistance of the outer shell body 321 and squeeze the soil layer in front, making the soil layer dense. This allows the creep monitoring component 33 to accurately monitor the overall activity of the soil layer and avoid the problem of large fluctuations in monitoring data due to loose soil.

[0039] Slots are provided on one side of the inner side of the outer shell 321. The protective cover 34 is inserted into the slots. The outer protective shell 32 and the protective cover 34 form a closed space. The sub-plug block 31 and the inner side of the outer shell 321 are provided with threaded holes for the locking bolt 22. The locking bolt 22 restricts the setting position of the outer protective shell 32 through the threaded holes.

[0040] During the installation of the creep monitoring module 3, the two sets of creep monitoring components 33 are pressed into the outer protective shell 32, and the two sets of protective cover plates 34 are inserted into the slots inside the outer protective shell 32. The protective cover plates 34 complete the sealing of the outer protective shell 32 during the insertion process. The outer protective shell 32 and the protective cover plates 34 form a closed space. At this time, the creep monitoring components 33 are restricted by the protective cover plates 34. The sub-plug block 31 is inserted into the female plug block 21 until the threaded hole is aligned with the locking bolt 22. The sub-plug block 31 and the outer protective shell 32 are fixed by the locking bolt 22. When the outer protective shell 32 is inserted into the soil layer, the protective cover plates 34 restrict the creep monitoring components 33 and prevent the soil layer from entering the outer protective shell 32. After the soil layer stabilizes, the protective cover plates 34 are pulled up and removed to release the creep monitoring components 33. At this time, the creep monitoring components 33 can be initially arranged.

[0041] The creep monitoring component 33 includes a sliding box 331, which is sleeved on the outside of the fixed block 322. A set of return springs 332 are installed at both ends of the sliding box 331. The ends of the two sets of return springs 332 facing the fixed block 322 are connected to the fixed block 322. A support plate 333 is welded to the back of the sliding box 331. A mating groove 334 is welded to both ends of the surface of the support plate 333. Springs 335 are installed inside the two sets of mating grooves 334. A creep sensing plate 336 is installed between the two sets of springs 335.

[0042] When the creep monitoring module 3 is working, the creep sensing plate 336 is pushed by the spring plate 335 and sticks tightly to the soil layer. At this time, the creep sensing plate 336 is fixed under the synchronous constraint of the spring plate 335 and the soil layer. As the soil layer creeps vertically, the creep sensing plate 336 moves down synchronously with the soil layer. The creep sensing plate 336 drives the support plate 333 to move down synchronously through the spring plate 335.

[0043] The creep sensor 336 is pushed by the spring 335 and sticks to the soil layer. At this time, the creep sensor 336 is fixed under the synchronous constraint of the spring 335 and the soil layer. As the soil layer creeps laterally, the creep sensor 336 continues to stick to the soil layer under the push of the spring 335 to sense the lateral movement and change of the soil layer.

[0044] A position sensor 337 is installed on one side of each of the two sets of docking slots 334. The position sensor 337 monitors the vertical position change data of the support plate 333 and sends the data to the GNSS signal base station 1. The position sensor 337 faces the creep sensor 336. As the soil layer creeps and there is a lateral change, the position sensor 337 monitors the lateral change data of the creep sensor 336 and sends the data to the GNSS signal base station 1.

[0045] A method for using a GNSS-based high-altitude slope creep monitoring device:

[0046] Step S1: Press the two sets of creep monitoring components 33 onto the inner walls of the outer protective shell 32 respectively, insert the protective cover 34 along the slot on one side of the outer protective shell 32 and push it to the bottom to complete the sealing of the outer protective shell 32, so that the creep monitoring components 33 are confined in the closed space.

[0047] Step S2: Install GNSS signal base station 1, making the female plug block 21 of the bottom plug component 2 of GNSS signal base station 1 flush with the edge of the concrete slope protection. Align the female plug block 31 of the assembled creep monitoring module 3 with the female plug block 21 of the bottom plug component 2 of GNSS signal base station 1 and insert it to the preset depth, which is not less than 1.5 meters. At this time, the outer protective shell 32 is completely submerged in the soil layer, and the back of the outer protective shell 32 is in contact with the concrete slope protection. Rotate the locking bolt 22 so that the locking bolt 22 passes through the center hole of the female plug block 21 and engages with the threaded hole inside the female plug block 31 and the outer shell body 321 and tightens it. The outer protective shell 32 is fixed firmly as a whole.

[0048] Step S3: After the equipment is fixed, let the creep monitoring module 3 stand still in the soil for at least 24 hours. After the soil around the creep monitoring module 3 is stable, pull the protective cover 34 to remove the protective cover 34 from the outer protective shell 32, and the protective cover 34 will release the restriction on the creep monitoring component 33.

[0049] The creep sensor 336 is pushed out of the protective cover plate 34 under the elastic thrust of the spring plate 335. The creep sensor 336 is in close contact with the surface of the slope soil layer and maintains its initial fixed state under the dual constraint of the spring plate 335 and the soil layer, thus completing the initial arrangement of the monitoring components.

[0050] Step S4: Activate the position sensor 337 of GNSS signal base station 1 and creep monitoring component 33, set the monitoring cycle of position sensor 337, and start creep data acquisition. When vertical creep occurs in the soil layer, creep sensing plate 336 moves synchronously with the soil layer under the push of spring plate 335. Position sensor 337 monitors and acquires the position change data of creep sensing plate 336 in real time. The sensing accuracy unit of creep monitoring module 3 is millimeters, and the data is transmitted to GNSS signal base station 1.

[0051] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A GNSS-based high-altitude slope creep monitoring device, characterized in that, It includes a GNSS signal base station (1), a plug-in assembly (2), and a creep monitoring module (3); The GNSS signal base station (1) is fixed to the top of the concrete slope. The plug-in assembly (2) is welded to the bottom of the GNSS signal base station (1). The creep monitoring module (3) is plugged into the plug-in assembly (2) and is constrained by the plug-in assembly (2). The creep monitoring module (3) is used to monitor the creep of the soil layer. The creep monitoring module (3) includes a sub-plug-in block (31), an outer protective shell (32), a creep monitoring assembly (33), and a protective cover plate (34). The sub-plug-in block (31) is plugged into the mother plug-in block (21). The outer protective shell (32) is welded to the surface of the sub-plug-in block (31). The device includes a main shell (321) and a fixing block (322). The main shell (321) is welded to the surface of the sub-plug block (31). The top of the main shell (321) is flush with the top of the sub-plug block (31). The middle part of the sub-plug block (31) and the upper part of the main shell (321) are provided with through holes that cooperate with locking bolts (22). Two sets of fixing blocks (322) are respectively welded to the middle position of the inner wall of the main shell (321). The bottom of the main shell (321) is obliquely shaped. The inner side of the outer protective shell (32) is provided with slots. The protective cover plate (34) is inserted into the slot. Two sets of creep monitoring components (33) are respectively installed on both sides of the inner wall of the outer protective shell (32). The protective cover plate (34) is inserted into the inner side of the outer protective shell (32). After the outer protective shell (32) is inserted into the soil layer, the protective cover plate (34) can be pulled out to allow the creep monitoring component (33) to contact the soil layer and enter the working state. The creep monitoring component (33) includes a sliding box (331). The sliding box (331) is sleeved on the outside of the fixed block (322). A set of return springs (332) is installed at both ends of the sliding box (331). The two sets of return springs... One end of the spring (332) facing the fixed block (322) is connected to the fixed block (322). A support plate (333) is welded to the back of the sliding box (331). Both ends of the support plate (333) are welded with mating grooves (334). Spring sheets (335) are installed inside the two sets of mating grooves (334). A creep sensing sheet (336) is installed between the two sets of spring sheets (335). A position sensor (337) is installed on one side of the two sets of mating grooves (334). The position sensor (337) faces the creep sensing sheet (336).

2. The GNSS-based high-slope creep monitoring device as described in claim 1, characterized in that, The plug-in assembly (2) includes a female plug-in block (21) and a locking bolt (22). The female plug-in block (21) is welded to the bottom of the GNSS signal base station (1), and the locking bolt (22) is threaded to the center of the female plug-in block (21).

3. The GNSS-based high-slope creep monitoring device as described in claim 1, characterized in that, Both the sub-plug block (31) and the outer shell body (321) have threaded holes for engaging locking bolts (22). The locking bolts (22) restrict the placement of the outer protective shell (32) through the threaded holes.

4. A method of using a GNSS-based high-altitude slope creep monitoring device as described in any one of claims 1-3, characterized in that: Includes the following steps: Step S1: Press the two sets of creep monitoring components (33) onto the inner walls of the outer protective shell (32) respectively, insert the protective cover (34) along the slot on one side of the outer protective shell (32) and push it to the bottom to complete the sealing of the outer protective shell (32) and confine the creep monitoring components (33) in the closed space. Step S2, install the GNSS signal base station (1) so that the female plug block (21) of the bottom plug assembly (2) of the GNSS signal base station (1) is flush with the edge of the concrete slope protection. Align the female plug block (31) of the assembled creep monitoring module (3) with the female plug block (21) of the bottom plug assembly (2) of the GNSS signal base station (1) and insert it to the preset depth. The insertion depth of the creep monitoring module (3) is not less than 1.5 meters. The sensing accuracy of the creep monitoring module (3) is in millimeters. At this time, the outer protective shell (32) is completely submerged in the soil layer. The back of the outer protective shell (32) is in contact with the concrete slope protection. Rotate the locking bolt (22) so that the locking bolt (22) passes through the center hole of the female plug block (21) and engages with the threaded hole inside the female plug block (31) and the outer shell body (321) and tightens it. The outer protective shell (32) is fixed firmly as a whole. Step S3: After the equipment is fixed and the surrounding soil is stable, pull the protective cover (34) to remove the protective cover (34) from the outer protective shell (32). Before removing the protective cover (34), let the creep monitoring module (3) stand in the soil for at least 24 hours. As the protective cover (34) is removed, the protective cover (34) releases the restriction on the creep monitoring component (33). The creep sensor (336) is pushed out of the protective cover (34) under the elastic thrust of the spring (335). The creep sensor (336) is close to the surface of the slope soil layer and maintains the initial fixed state under the dual restriction of the spring (335) and the soil layer, thus completing the initial arrangement of the monitoring component. Step S4: Start the position sensor (337) of the GNSS signal base station (1) and creep monitoring component (33), set the monitoring cycle of the position sensor (337), and the position sensor (337) starts to collect creep data. When vertical creep occurs in the soil layer, the creep sensor (336) moves down synchronously with the soil layer. The position sensor (337) monitors the position change data of the creep sensor (336) in real time and transmits the data to the GNSS signal base station (1).

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