A measuring device for monitoring horizontal displacement of a slope

Abstract

The utility model discloses a kind of measuring devices for monitoring side slope horizontal displacement, including portal plate, multiple mounting holes are opened on it;First limiting component, it includes first isolation column, first roller and first connecting piece, first connecting piece is fixed to mounting hole with the first isolation column;Second limiting component, it includes second isolation column, second roller, second connecting piece and eccentric nut, second connecting piece is fixed to mounting hole with the second isolation column, eccentric nut is connected with second isolation column by thread, the end surface of eccentric nut is closely connected with portal plate;Optical fiber rod, side surface is contacted with first roller and second roller. By being provided with roller to make optical fiber rod can move along first direction, when optical fiber rod is deformed by larger force, optical fiber rod can adaptively move, thereby avoid the influence of tensile stress of measuring line anchor pile when optical fiber rod is deformed. Meanwhile, by being provided with eccentric nut, the loosening of second isolation column can be reduced, thereby high-precision detection is carried out.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering safety monitoring technology, and in particular to a measuring device for monitoring the horizontal displacement of slopes. Background Technology

[0002] Current fiber optic sensors used to detect slope deformation work by coupling a grating to the slope medium and using physical quantities such as strain, displacement, and pressure to cause changes in the grating period or effective refractive index, resulting in Bragg wavelength drift. Then, by demodulating the wavelength signal and combining it with calibration relationships, the mechanical state and environmental parameters of each point on the slope can be inferred, enabling distributed, multi-parameter real-time monitoring of landslide hazards.

[0003] Currently, there are two main arrangements for fiber optic monitoring of slope surface deformation: (1) Directly anchoring the fiber optic cable into the soil at a certain interval (e.g., 1 meter, 2 meters) and monitoring the tensile strain of the fiber optic cable between the two anchor points; (2) Using two rigid rods connected by a rotating shaft, the angle between them is linearly related to the arc length of the outer circumference of the rotating shaft. By using fiber optic cable to monitor this angle change, the horizontal displacement of the slope can be monitored.

[0004] However, the first method mentioned above has the problem of not being able to identify the deformation direction and shear dislocations between rock layers, which has certain limitations in its use. Although the second method can identify the deformation direction, due to the use of rigid connections, displacement at a certain local position will cause the anchor piles of the entire survey line to be under tension, which will affect the measurement accuracy and the ability to adapt to slope deformation. Moreover, when subjected to large forces, the optical fiber may even break. Utility Model Content

[0005] This invention aims to at least solve one of the aforementioned technical problems existing in the prior art. To this end, this application proposes a measuring device for monitoring the horizontal displacement of a slope, which can avoid measurement errors and fiber optic breakage problems caused by localized uneven deformation.

[0006] The measuring device for monitoring the horizontal displacement of a slope according to an embodiment of this application includes: The gantry panel has multiple mounting holes. The first limiting component includes a first isolation post, a first roller, and a first connector, wherein the first connector fixes the first isolation post to the mounting hole, and the first roller is rotatably mounted on the first isolation post. The second limiting component includes a second isolation post, a second roller, a second connector and an eccentric nut. The second connector fixes the second isolation post to the mounting hole. The second roller is rotatably mounted on the second isolation post. The eccentric nut is threadedly connected to the second isolation post, and the end face of the eccentric nut is in close contact with the gantry plate. The fiber optic pole has its side contacting the first roller and the second roller. The fiber optic pole is movable in a first direction, and its side is affected by the force of slope displacement. The measuring device for monitoring the horizontal displacement of a slope according to the embodiments of this application has at least the following beneficial effects: By setting rollers to allow the fiber optic rod to move along a first direction, the fiber optic rod can adapt to deformation under a large force, and is not fixed, thereby avoiding the influence of tensile stress on the anchor piles of the measuring line when the fiber optic rod deforms. Simultaneously, by setting an eccentric nut, the loosening of the second isolation column after long-term operation can be reduced, thereby maintaining high-precision detection results.

[0007] According to some embodiments of this application, there are multiple first limiting components and multiple second limiting components, and the optical fiber rod can be clamped by the first roller and the second roller.

[0008] According to some embodiments of this application, the first limiting component and the second limiting component are both arranged in pairs, and the first limiting component and the second limiting component are alternately arranged along a first direction, and the optical fiber rod passes through each pair of the first limiting component and the second limiting component.

[0009] According to some embodiments of this application, the number of the first limiting component and the number of the second limiting component are the same.

[0010] According to some embodiments of this application, some of the mounting holes on the gantry plate are strip-shaped holes, which extend along a second direction, and the first isolation post or the second isolation post is installed into the strip-shaped hole.

[0011] According to some embodiments of this application, the first connector includes a bolt and a nut, the bolt passing through the mounting hole and the first isolation post, and the nut being threadedly connected to the bolt and abutting against the end face of the first isolation post.

[0012] According to some embodiments of this application, the first isolation post can be replaced to adjust the height of the first roller.

[0013] According to some embodiments of this application, the second connector includes a bolt and a nut, the bolt passing through the mounting hole and the second isolation post, and the nut being threadedly connected to the bolt and abutting against the end face of the second isolation post.

[0014] According to some embodiments of this application, the second isolation post can be replaced to adjust the height of the second roller.

[0015] According to some embodiments of this application, the side of the optical fiber rod is provided with a groove that allows the first roller or the second roller to engage.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The accompanying drawings are used to provide a further understanding of the technical solutions disclosed in this application and form part of the specification. They are used together with the embodiments disclosed in this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions disclosed in this application.

[0018] Figure 1 This is a three-dimensional diagram of the measuring device for monitoring horizontal displacement of a slope according to an embodiment of this application; Figure 2 This is a top view of the measuring device for monitoring horizontal displacement of a slope according to an embodiment of this application; Figure 3 This is a schematic top view of the installation of the fiber optic rod in the measuring device for monitoring the horizontal displacement of a slope according to an embodiment of this application; Figure 4 This is a schematic front view of the installation of the fiber optic rod in the measuring device for monitoring the horizontal displacement of a slope according to an embodiment of this application; Figure 5 This is a schematic diagram of the measuring device for monitoring the horizontal displacement of a slope after it has been installed on the slope, according to an embodiment of this application.

[0019] Reference numerals: 100-Gantry plate, 110-Mounting hole, 200-First limiting component, 210-First isolation post, 220-First roller, 230-First connector, 300-Second limiting component, 310-Second isolation post, 320-Second roller, 330-Second connector, 340-Eccentric nut, 400-Fiber optic rod, 410-Groove. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0024] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Current fiber optic sensors used to detect slope deformation work by coupling a grating to the slope medium and using physical quantities such as strain, displacement, and pressure to cause changes in the grating period or effective refractive index, resulting in Bragg wavelength drift. Then, by demodulating the wavelength signal and combining it with calibration relationships, the mechanical state and environmental parameters of each point on the slope can be inferred, enabling distributed, multi-parameter real-time monitoring of landslide hazards.

[0026] Currently, there are two main arrangements for fiber optic monitoring of slope surface deformation: (1) Directly anchoring the fiber optic cable into the soil at a certain interval (e.g., 1 meter, 2 meters) and monitoring the tensile strain of the fiber optic cable between the two anchor points; (2) Using two rigid rods connected by a rotating shaft, the angle between them is linearly related to the arc length of the outer circumference of the rotating shaft. By using fiber optic cable to monitor this angle change, the horizontal displacement of the slope can be monitored.

[0027] However, the first method mentioned above has the problem of not being able to identify the deformation direction and shear dislocations between rock layers, which has certain limitations in its use. Although the second method can identify the deformation direction, due to the use of rigid connections, displacement at a certain local position will cause the anchor piles of the entire survey line to be under tension, which will affect the measurement accuracy and the ability to adapt to slope deformation. Moreover, when subjected to large forces, the optical fiber may even break.

[0028] To address this issue, this application proposes a measuring device for monitoring the horizontal displacement of a slope. By incorporating rollers, a fiber optic rod can move along a first direction. When the fiber optic rod is subjected to significant force and deforms, it can adapt by moving accordingly. Since the fiber optic rod is not fixed, this avoids the tensile stress on the anchor piles of the measuring line caused by deformation. Simultaneously, by incorporating an eccentric nut, the loosening of the second isolation post after prolonged operation can be reduced, thereby maintaining high-precision detection results.

[0029] Reference Figure 1 The measuring device for monitoring the horizontal displacement of a slope in this embodiment includes a gantry plate 100, a first limiting component 200, a second limiting component 300, and a fiber optic rod 400. The gantry plate 100 is the main structure of the measuring device, supporting the first limiting component 200, the second limiting component 300, and the fiber optic rod 400. The first limiting component 200 and the second limiting component 300 together clamp the fiber optic rod 400, allowing it to move between them. Therefore, the fiber optic rod 400 is not a fixed device; it can slide after being deformed under pressure, preventing tensile stress from acting on a fixed point and causing damage to the device.

[0030] Specifically, the gantry plate 100 has multiple mounting holes 110 for fixing the first limiting component 200 or the second limiting component 300. The first limiting component 200 includes a first isolation post 210, a first roller 220 and a first connector 230. The first connector 230 fixes the first isolation post 210 to the mounting hole 110, and the first roller 220 is rotatably mounted on the first isolation post 210. The second limiting component 300 includes a second isolation post 310, a second roller 320, a second connector 330, and an eccentric nut 340. The second connector 330 fixes the second isolation post 310 to the mounting hole 110. The second roller 320 is rotatably mounted on the second isolation post 310. The eccentric nut 340 is threadedly connected to the second isolation post 310. The end face of the eccentric nut 340 is in close contact with the gantry plate 100. The eccentric nut 340 is not easy to loosen when subjected to vibration, thereby strengthening the connection between the second isolation post 310 and the gantry plate 100.

[0031] Reference Figure 3 and Figure 4 The side of the fiber optic rod 400 can contact the first roller 220 and the second roller 320, thereby forming a rolling contact between the fiber optic rod 400 and the first limiting component 200 and the second limiting component 300, reducing the frictional resistance experienced by the fiber optic rod 400 during movement. Guided by the first limiting component 200 and the second limiting component 300, the fiber optic rod 400 moves along a first direction (refer to...) Figure 1The slope moves in the x-direction. When the slope shifts, refer to... Figure 5 The forces exerted by the soil act on the side of the fiber optic pole 400, causing it to deform slightly. The optical fibers on the pole can detect these deformations. As the deformation gradually increases, the fiber optic pole 400 can move laterally, thus adaptively adjusting to the continuous deformation of the slope.

[0032] Furthermore, there are multiple first limiting components 200 and multiple second limiting components 300. Each first limiting component 200 and each second limiting component 300 is arranged along the first direction, thereby using multiple first limiting components 200 and multiple second limiting components 300 to stably limit the movement direction of the fiber optic rod 400. Moreover, when the fiber optic rod 400 is subjected to lateral force, each first limiting component 200 and each second limiting component 300 can jointly bear the force to avoid excessive local stress.

[0033] Furthermore, in some embodiments, the first limiting component 200 is equidistantly arranged along the first direction, and the second limiting component 300 is equidistantly arranged along the first direction. The first limiting component 200 and the second limiting component 300 are respectively arranged on both sides of the optical fiber rod 400, so that either the first limiting component 200 or the second limiting component 300 can mainly bear the lateral force of the optical fiber rod 400. In this embodiment, referring to... Figure 2 The first limiting component 200 and the second limiting component 300 are both set in pairs. The first limiting component 200 and the second limiting component 300 are alternately set along the first direction. The fiber optic rod 400 passes through each pair of first limiting components 200 and second limiting components 300, thereby ensuring that the force-bearing structure on both sides of the fiber optic rod 400 is the same.

[0034] Furthermore, the number of the first limiting component 200 and the second limiting component 300 is the same, so that the force on the fiber optic rod 400 is balanced.

[0035] Optionally, some of the mounting holes 110 on the gantry panel 100 are strip-shaped holes, with the strip-shaped holes along the second direction (refer to...). Figure 1 Extending in the y-direction, the first isolation post 210 or the second isolation post 310 is installed into the strip hole, so that the first isolation post 210 or the second isolation post 310 can adjust its position in the second direction through the strip hole, thereby changing the clamping force on the fiber optic rod 400 and adjusting the magnitude of the clamping force.

[0036] Specifically, the first connector 230 can be fixed to the first isolation post 210 by means of pin connection, snap-fit ​​connection or bolt connection. In this embodiment, the first connector 230 includes a bolt and a nut. The bolt passes through the mounting hole 110 and the first isolation post 210. The nut is threadedly connected to the bolt and abuts against the end face of the first isolation post 210, thereby completing the fixing and installation of the first isolation post 210.

[0037] Furthermore, the first isolation post 210 can be replaced to adjust the height of the first roller 220, thereby accommodating different fiber optic poles 400. When replacement is required, the bolts and nuts in the first connector 230 need to be released to separate the first isolation post 210 from the gantry plate 100, and then the first roller 220 on it is installed on a first isolation post 210 of a different height and reinstalled onto the gantry plate 100.

[0038] Specifically, the second connector 330 includes a bolt and a nut. The bolt passes through the mounting hole 110 and the second isolation post 310. The nut is threadedly connected to the bolt and abuts against the end face of the second isolation post 310, thereby completing the fixing and installation of the second isolation post 310.

[0039] Furthermore, the second isolation post 310 can be replaced to adjust the height of the second roller 320, thereby accommodating different fiber optic poles 400. When replacement is required, the bolts and nuts in the second connector 330 need to be released to separate the second isolation post 310 from the gantry plate 100, and then the second roller 320 on it is installed on a second isolation post 310 of a different height and reinstalled onto the gantry plate 100.

[0040] Furthermore, the side of the fiber optic rod 400 is provided with a groove 410 that allows the first roller 220 or the second roller 320 to be engaged, and the groove 410 defines the direction of movement of the fiber optic rod 400.

[0041] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A measuring device for monitoring the horizontal displacement of a slope, characterized in that, include: The gantry panel has multiple mounting holes. The first limiting component includes a first isolation post, a first roller, and a first connector, wherein the first connector fixes the first isolation post to the mounting hole, and the first roller is rotatably mounted on the first isolation post. The second limiting component includes a second isolation post, a second roller, a second connector and an eccentric nut. The second connector fixes the second isolation post to the mounting hole. The second roller is rotatably mounted on the second isolation post. The eccentric nut is threadedly connected to the second isolation post, and the end face of the eccentric nut is in close contact with the gantry plate. The fiber optic pole has its side in contact with the first roller and the second roller. The fiber optic pole is movable in a first direction, and its side is affected by the force of slope displacement.

2. The measuring device for monitoring the horizontal displacement of a slope according to claim 1, characterized in that: There are multiple first limiting components and multiple second limiting components, and the optical fiber rod can be clamped by the first roller and the second roller.

3. The measuring device for monitoring the horizontal displacement of a slope according to claim 2, characterized in that: The first limiting component and the second limiting component are both arranged in pairs, and the first limiting component and the second limiting component are alternately arranged along a first direction. The optical fiber rod passes through the pairs of the first limiting component and the second limiting component.

4. The measuring device for monitoring the horizontal displacement of a slope according to claim 2, characterized in that: The number of the first limiting component and the second limiting component are the same.

5. The measuring device for monitoring the horizontal displacement of a slope according to claim 1, characterized in that: Some of the mounting holes on the gantry plate are strip-shaped holes, which extend along a second direction, and the first isolation post or the second isolation post is installed into the strip-shaped hole.

6. The measuring device for monitoring the horizontal displacement of a slope according to claim 1, characterized in that: The first connector includes a bolt and a nut. The bolt passes through the mounting hole and the first isolation post, and the nut is threadedly connected to the bolt and abuts against the end face of the first isolation post.

7. The measuring device for monitoring the horizontal displacement of a slope according to claim 6, characterized in that: The first isolation post can be replaced to adjust the height of the first roller.

8. The measuring device for monitoring the horizontal displacement of a slope according to claim 1, characterized in that: The second connector includes a bolt and a nut, the bolt passing through the mounting hole and the second isolation post, and the nut being threadedly connected to the bolt and abutting against the end face of the second isolation post.

9. The measuring device for monitoring the horizontal displacement of a slope according to claim 8, characterized in that: The second isolation column can be replaced to adjust the height of the second roller.

10. The measuring device for monitoring the horizontal displacement of a slope according to claim 1, characterized in that: The side of the fiber optic rod has a groove that allows the first roller or the second roller to engage.

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