A device for predicting deep horizontal displacement of a measuring tube at a slope toe of an embankment

Abstract

The application discloses a device for predicting deep horizontal displacement of a measuring tube at an embankment toe, comprising a measuring tube, a bottom sealing part and an orifice mounting seat. The orifice mounting seat is fixed at a drilling orifice, and the bottom sealing part is mounted at the bottom end of the lowermost measuring tube. Fixed cylinders are arranged at the upper and lower ends of the measuring tube, and the fixed cylinders on the two sides are abutted against the inner wall of the drilling through support assemblies. The measuring tubes are connected into a whole through a splicing structure. The support assembly comprises an annular block, a support block and a connecting piece. The annular block is rotatably mounted in the fixed cylinder, and a plurality of arc blocks are equidistantly arranged in the circumference of the annular block. A plurality of openings are formed in the outer wall of the fixed cylinder. The support block passes through the openings through the connecting pieces at the inner ends and is slidably connected with the inner walls of the openings. Arc-shaped grooves are arranged on the arc blocks, and guide wheels are slidably arranged in the grooves. The application realizes rapid and accurate butt joint through a modular splicing structure, has the advantages of reusability, convenient installation and the like, and can significantly reduce the monitoring cost.

Description

Technical Field

[0001] This invention relates to the field of inclinometer technology, specifically a device for predicting deep horizontal displacement at the toe of an embankment slope. Background Technology

[0002] When constructing highway or railway embankments in soft soil areas, the low bearing capacity of the soft soil foundation makes the embankment slope prone to collapse if the backfilling is improper. To prevent this collapse, monitoring the foundation during construction is essential. One measure to control slope collapse is to install inclinometers at the toe of the embankment slope to monitor the deep horizontal displacement at that point. Since the deep horizontal displacement is typically measured using inclinometers, improper installation can lead to measurement errors.

[0003] Currently, there are two methods for installing inclinometer tubes. For cast-in-place slabs, piles, walls, and other support structures, the inclinometer tube needs to be fixed to the reinforcing cage before it is lowered. It is then poured into the support structure along with the reinforcing cage during concrete pouring. This method is called the pre-installed grouting method. For soil and rock slopes, deep holes need to be excavated using drilling machinery. After the inclinometer tube is lowered, bentonite is used to backfill the gaps. This method is called the post-installation method. Regardless of whether the inclinometer tube is pre-installed or post-installed, it is a one-time consumable. The material and labor costs for installing the monitoring tube alone range from several thousand to tens of thousands of yuan. Under normal circumstances, installing inclinometer tubes is costly, and the segmented splicing requires on-site welding or bolt tightening, making the operation cumbersome and posing a risk of falling. Summary of the Invention

[0004] The purpose of this invention is to provide a device for predicting deep horizontal displacement of embankment slope toe using inclinometer tubes, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep horizontal displacement prediction device for inclinometer tubes at the toe of an embankment slope, comprising an inclinometer tube, a bottom seal, and a borehole mounting base. The borehole mounting base is fixed to the borehole opening, and the bottom seal is installed at the bottom end of the lowest inclinometer tube. The inclinometer tube has fixed cylinders at both ends, and the two side fixed cylinders abut against the inner wall of the borehole through support components. The inclinometer tubes are connected as a whole through a splicing structure.

[0006] The support assembly includes an annular block, a support block, and a connector. The annular block is rotatably installed inside the fixed cylinder, and has several arc-shaped blocks evenly spaced around its circumference. The outer wall of the fixed cylinder has several openings. The support block passes through the openings and slides against the inner wall of the openings via the connector at its inner end. The arc-shaped blocks have arc-shaped grooves, and guide wheels slide within the grooves. These guide wheels are connected to the connector, thereby driving the support block to extend and retract radially by rotating the annular block, achieving adjustable contact with the inner wall of the borehole. The upper and lower ends of the fixed cylinder have several slots, and several connecting rods are connected between the annular blocks on the upper and lower sides through these slots. The top of the upper annular block has a limiting rod, which extends through the slots to the bottom of the lower annular block above the fixed cylinder, where a limiting hole is provided. When the inclinometer tubes are spliced, the limiting rod is inserted into the adjacent limiting hole to achieve axial transmission.

[0007] The bottom sealing includes an anchoring cylinder and a drive ring. The anchoring cylinder is hinged with multiple anchoring rods, and the drive ring is slidably assembled on the anchoring cylinder. Moving the drive ring upward can unfold the anchoring rods and enhance the bottom anchoring stability.

[0008] Furthermore, the assembly structure includes several supports distributed on the outer periphery of the upper fixed cylinder. Each support is provided with a sliding rod, and a sliding seat is slidably mounted on the sliding rod. A return spring connected to the sliding seat is sleeved on the sliding rod. A metal plate is connected to the upper end of the sliding seat, and the upper end of the metal plate has a hook structure. Several slots corresponding to the supports are opened on the outer periphery of the lower fixed cylinder.

[0009] Furthermore, the upper end of the upper fixing cylinder extends upward and beyond the top of the inclinometer tube to form a protective section. Several fastening rods are evenly distributed around the top of the inclinometer tube. The bottom end of the lower fixing cylinder is higher than the bottom end of the inclinometer tube to form a docking area. Fastening holes corresponding to the positions of the fastening rods are opened at the bottom end of the inclinometer tube.

[0010] Furthermore, when the support block is in its retracted state, the slide protrudes from the surface of the support block; the orifice mounting seat has a mounting hole in its center, and a rotating seat is connected to the mounting hole by a bearing; the rotating seat has a lowering hole in its center, the diameter of which matches the outer contour dimensions of the support block in its retracted state, ensuring that the support block can pass smoothly when the inclinometer tube is lowered; the inner wall of the lowering hole has several lowering grooves evenly distributed, the positions of which correspond one-to-one with the slide. When the slide is not aligned with the lowering groove, the slide will be stuck at the top edge of the lowering hole, thus blocking the inclinometer tube from continuing to lower; only when the slide and the lowering groove are completely aligned can the inclinometer tube pass smoothly.

[0011] Furthermore, the side end of the orifice mounting base is evenly provided with several mounting holes; the top outer circumference of the rotating base is provided with several kick plates, and the top of the rotating base is rotatably embedded with several rolling balls to reduce friction with the bottom of the slide base and facilitate the rotation of the rotating base.

[0012] Furthermore, the top of the anchoring cylinder is provided with several plug-in rods corresponding to the fastening holes, and the top of the anchoring cylinder is connected to a plug-in cylinder, and the bottom end of the plug-in cylinder is connected to a conical block. The outer diameter of the drive ring is larger than the outer diameter of the anchoring cylinder. The outer wall of the anchoring cylinder is provided with several sliding grooves at equal intervals, and the sliding grooves extend into the interior of the anchoring cylinder. The inner end face of the drive ring is provided with several drive blocks that are slidably connected to the sliding grooves, and the inner end of each drive block is connected to an adjusting block. The anchoring cylinder is provided with a receiving opening, and the bottom end of the receiving opening is provided with a hinge seat. The anchoring rod is provided with a key hole, and the key hole is connected to the hinge seat. A pull rope is connected between the adjusting block and the bottom end of the anchoring rod. When the drive block moves upward, the anchoring rod is pulled out synchronously by the pull rope.

[0013] Furthermore, a notch is provided on the upper outer circumference of the anchoring cylinder, and a second spring is provided inside the notch. The other end of the second spring is connected to an inclined block, and the inclined block moves horizontally along the notch. When the drive ring moves upward and releases the pressure on the inclined block, the second spring pushes the inclined block to extend horizontally outward, thereby achieving mechanical self-locking.

[0014] Furthermore, it also includes a control seat, which is detachably mounted on the orifice mounting base by screws. The control seat has a through-hole in the middle, and a control ring is connected to the through-hole by a bearing. The control ring has a hole corresponding to the limit rod. A ratchet is fitted on the outer circumference of the control ring, and a pawl that meshes with the ratchet is provided on the control seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Modular assembly and self-locking connection structure

[0017] The inclinometer tubes are quickly and accurately connected via a modular structure (sliding block, metal plate hook, and bayonet). Combined with the elastic preload of a return spring, a stable connection is formed, avoiding the low efficiency and loosening issues of traditional bolt fixing. The misalignment design of the sliding block and rotating seat during assembly provides a mechanical stop, preventing the inclinometer tubes from accidentally falling and significantly improving construction safety.

[0018] 2. Adaptive radial support system for borehole inner wall

[0019] A ring-shaped block-arc groove-guide wheel linkage mechanism drives the radial extension and retraction of the support block. A control ring uniformly adjusts the support components of all inclinometer tubes, ensuring a tight fit between the entire assembly and the borehole inner wall. A ratchet and pawl mechanism provides self-locking to prevent loosening and backflow, ensuring both measurement accuracy (aligning the inclinometer tube center with the borehole axis) and adaptability to different borehole diameters.

[0020] 3. Bottom active anchoring and anti-buoyancy design

[0021] The bottom-sealed integrated anchor rod deployment mechanism triggers the traction of the pull rope through the relative displacement of the drive ring and the anchor cylinder, causing the anchor rod to embed into the soil layer in a barbed shape; the inclined block pop-out self-locking mechanism further fixes the position of the drive ring, and combined with the load-bearing platform formed by the compaction of the conical block, it effectively resists the buoyancy of groundwater and prevents the inclinometer tube from floating or deviating.

[0022] 4. Improved ease of construction and safety

[0023] The orifice mounting base and rotating base provide dual guidance and protection, reducing disturbance to the soil at the orifice. The standardized segmented lowering and assembly process reduces the difficulty of manual operation. The device can be repeatedly disassembled and reassembled; the support components can be easily retrieved after being folded up, balancing engineering economy and environmental protection. Attached Figure Description

[0024] Figure 1 This is a structural disassembly diagram of a deep horizontal displacement prediction device for inclinometer tubes at the toe of an embankment according to the present invention.

[0025] Figure 2 This is an assembly diagram of the inclinometer tube structure of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0027] Figure 4 for Figure 2 Enlarged view of a section at point B in the middle;

[0028] Figure 5 This is a cross-sectional view of the splice joint of the inclinometer tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the bottom cover structure of the present invention;

[0030] Figure 7 This is a cross-sectional view of the bottom cover structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the annular block structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the orifice mounting base structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the control seat structure of the present invention.

[0034] In the diagram, the components are: Inclinometer tube-1, orifice mounting base-2, fixing cylinder-3, annular block-4, support block-5, connector-6, arc-shaped block-7, arc-shaped groove-8, guide wheel-9, slot-10, connecting rod-11, limiting rod-12, limiting hole-13, anchor cylinder-14, drive ring-15, anchor rod-16, support-17, sliding rod-18, sliding seat-19, return spring-20, metal sheet-21, bayonet-22, and clamp. Fixed rod-23, rotating seat-25, lowering hole-26, lowering groove-27, mounting hole-28, kick plate-29, plug-in rod-30, plug-in cylinder-31, conical block-32, sliding groove-33, driving block-34, adjusting block-35, storage port-36, hinge seat-37, key hole-38, pull rope-39, control seat-41, control ring-42, plug hole-43, ratchet-44, pawl-45, wedge block-46. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 10 As shown, a deep horizontal displacement prediction device for inclinometer tubes at the toe of an embankment includes an inclinometer tube 1, a bottom seal, and a borehole mounting base 2. The borehole mounting base 2 is fixed to the borehole opening, the bottom seal is installed at the bottom end of the lowest inclinometer tube 1, and the upper and lower ends of the inclinometer tube 1 are provided with fixing cylinders 3. The two fixing cylinders 3 on both sides abut against the inner wall of the borehole through a support component. The inclinometer tubes 1 are connected to each other as a whole through a splicing structure.

[0037] The support assembly includes an annular block 4, a support block 5, and a connector 6. The annular block 4 is rotatably installed inside the fixed cylinder 3, and has several arc-shaped blocks 7 equidistantly arranged around its circumference. The outer wall of the fixed cylinder 3 has several openings. The support block 5 passes through the openings and slides with the inner wall of the openings through the connector 6 at its inner end. The arc-shaped blocks 7 have arc-shaped grooves 8, and guide wheels 9 slide in the grooves. The guide wheels 9 are connected to the connector 6, so that the support block 5 can be radially extended and retracted by rotating the annular block 4, thereby achieving adjustable contact with the inner wall of the borehole. The upper and lower ends of the fixed cylinder 3 have several slots 10, and several connecting rods 11 are connected between the annular blocks 4 on the upper and lower sides through the slots 10. The top of the upper annular block 4 has a limiting rod 12, which extends through the slots 10 to the top of the fixed cylinder 3. The bottom of the lower annular block 4 has a limiting hole 13. When the inclinometer tube 1 is spliced, the limiting rod 12 is inserted into the adjacent limiting hole 13 to achieve axial transmission.

[0038] The bottom sealing includes an anchoring cylinder 14 and a drive ring 15. The anchoring cylinder 14 is hinged with multiple anchoring rods 16, and the drive ring 15 is slidably mounted on the anchoring cylinder 14. Moving the drive ring 15 upward can unfold the anchoring rods 16, thereby enhancing the bottom anchoring stability.

[0039] In this embodiment, the assembly structure includes several supports 17 distributed on the outer periphery of the upper fixed cylinder 3. A slide rod 18 is provided on the support 17, and a slide seat 19 is slidably mounted on the slide rod 18. A return spring 20 connected to the slide seat 19 is sleeved on the slide rod 18. A metal piece 21 is connected to the upper end of the slide seat 19. The upper end of the metal piece 21 has a hook structure. Several slots 22 corresponding to the supports 17 are opened on the outer periphery of the lower fixed cylinder 3.

[0040] In this embodiment, the upper end of the upper fixing cylinder 3 extends upward and beyond the top of the inclinometer tube 1 to form a protective section. Several fastening rods 23 are evenly distributed around the top of the inclinometer tube 1. The bottom end of the lower fixing cylinder 3 is higher than the bottom end of the inclinometer tube 1 to form a docking area. Fastening holes corresponding to the positions of the fastening rods 23 are opened at the bottom end of the inclinometer tube 1.

[0041] In this embodiment, when the support block 5 is in the retracted state, the slide 19 protrudes from the surface of the support block 5; the orifice mounting base 2 has a mounting hole 28 in the middle, and a rotating seat 25 is connected to the mounting hole 28 by a bearing. The rotating seat 25 has a lowering hole 26 in the middle, and its diameter matches the outer contour size of the support block 5 in the retracted state, ensuring that the support block 5 can pass smoothly when the inclinometer tube 1 is lowered; the inner wall of the lowering hole 26 has several lowering grooves 27 evenly distributed, and their positions correspond one-to-one with the slide 19. When the slide 19 is not aligned with the lowering groove 27, the slide 19 will be stuck at the top edge of the lowering hole 26, thereby blocking the inclinometer tube 1 from continuing to lower; only when the slide 19 is completely aligned with the lowering groove 27 can the inclinometer tube 1 pass smoothly. The side end of the orifice mounting base 2 has several mounting holes 28 evenly distributed; the top outer circumference of the rotating seat 25 has several kick plates 29 distributed.

[0042] The installation and splicing method of the inclinometer tube 1 is as follows:

[0043] After drilling is completed, the borehole mounting base 2 is first installed at the borehole opening using ground nails. The borehole mounting base 2 can effectively protect the borehole opening, prevent the inclinometer tube 1 from rubbing against the edge of the borehole opening during the lowering process, and avoid soil loosening or borehole collapse. On the other hand, it can also serve as a reference guide structure for the installation of the inclinometer tube 1, ensuring that the verticality of the inclinometer tube 1 is consistent with the design axis.

[0044] When lowering the inclinometer tube 1, the support block 5 is in a fully retracted state. Then, the inclinometer tube 1 is lowered into the hole through the lowering hole 26. During the lowering process, the slide 19 and the lowering groove 27 are misaligned. In this way, if the operator accidentally drops the tube during the lowering process, the top of the inclinometer tube 1 will be stuck on the rotating seat 25 when it falls to the rotating seat 25 because the outer contour of the slide 19 is larger than the size of the lowering hole 26, thus forming a mechanical stop and preventing the inclinometer from falling directly into the bottom of the hole. During normal lowering, the inclinometer tube 1 is lowered until the slide 19 and the rotating seat 25 are in contact before the splicing work begins.

[0045] Because the inclinometer tube 1 is quite heavy and the slide 19 is slidably mounted on the support 17, when the slide 19 comes into contact with the rotating seat 25, the inclinometer tube 1 will continue to sink a certain distance, while the position of the slide 19 remains unchanged. This causes the slide 19 to compress the return spring 20 and simultaneously raise the metal plate 21, so that its hook part completely protrudes from the upper edge of the fixed cylinder 3. At this time, the other section of the inclinometer tube 1 is aligned with the lower tube section and inserted, and the fastening rod 23 is inserted into the fastening hole. At the same time, because the metal plate 21 has a certain elasticity, during the insertion of the other section of the inclinometer tube 1, the metal plate 21 will abut along the surface of the inclinometer tube 1, and after the inclinometer tube 1 is fully inserted, the hook at the top of the metal plate 21 will automatically snap into the bayonet 22.

[0046] After the initial docking is completed, the staff kicks the kick plate 29 to rotate and adjust the angle of the rotating seat 25, so that the lowering groove 27 and the slide 19 are aligned. At this time, the inclinometer tube 1 can continue to sink to complete the docking. At the same time, the slide 19 is no longer restricted by the rotating seat 25, the return spring 20 is released, and the slide 19 moves downward to reset, which in turn drives the metal piece 21 to move downward synchronously. Finally, the hook of the metal piece 21 firmly hooks the lower end of the bayonet 22. The elasticity of the return spring 20 keeps the metal piece 21 in a taut state, forming a stable connection. After the slide 19 sinks out of the rotating seat 25, the staff kicks the kick plate 29 to reset the lowering groove 27 and the slide 19, so that the splicing work of the other section of the inclinometer tube 1 can be carried out.

[0047] In this embodiment, the top of the anchoring cylinder 14 is provided with several plug-in rods 30 corresponding to the fastening holes, and the top of the anchoring cylinder 14 is connected to a plug-in cylinder 31, and the bottom end is connected to a conical block 32. The outer diameter of the driving ring 15 is larger than the outer diameter of the anchoring cylinder 14. Several sliding grooves 33 are evenly spaced on the outer wall of the anchoring cylinder 14, and the sliding grooves 33 extend into the interior of the anchoring cylinder 14. Several driving blocks 34 that are slidably connected to the sliding grooves 33 are provided on the inner end face of the driving ring 15. An adjusting block 35 is connected to the inner end of each driving block 34. A receiving port 36 is provided on the anchoring cylinder 14, and a hinge seat 37 is provided at the bottom end of the receiving port 36. A key hole 38 is provided on the anchoring rod 16, and the key hole 38 is connected to the hinge seat 37. A pull rope 39 is connected between the adjusting block 35 and the bottom end of the anchoring rod 16. When the driving block 34 moves upward, the anchoring rod 16 is pulled synchronously by the pull rope 39.

[0048] In this embodiment, a slot 22 is provided on the upper outer circumferential surface of the anchoring cylinder 14. A second spring is provided inside the slot 22. The other end of the second spring is connected to a wedge block 46. The wedge block 46 moves horizontally along the slot 22. When the drive ring 15 moves upward to release the pressure on the wedge block 46, the second spring pushes the wedge block 46 to extend horizontally, thereby achieving mechanical self-locking.

[0049] When the lowest inclinometer tube 1 reaches the bottom of the borehole, the workers continue to press down on the inclinometer tube 1. At this time, the conical block 32 at the bottom of the anchoring cylinder 14 inserts into the soil layer first, using the pointed cone structure to break through the dense soil. The drive ring 15, because its outer diameter is larger than that of the anchoring cylinder 14, is blocked by the hard interface at the bottom of the borehole, forming a relative displacement trigger condition. The inclinometer tube 1 continues to be pressed down, causing the anchoring cylinder 14 to continue to penetrate deeper into the soil layer, while the drive ring 15 remains stationary. The axial displacement difference between the drive ring 15 and the anchoring cylinder 14 guides the drive block 34 to move upward through the slide groove 33. The drive block 34 drives the adjusting block 35 to move upward synchronously, tightening the anchor rod. The bottom end of the anchor rod 16 is connected to the pull rope 39; the traction force of the pull rope 39 causes the anchor rod 16 to rotate around the hinge seat 37; the unfolded anchor rod 16 forms a barbed structure, and its end is embedded in the surrounding soil. At the same time, the drive ring 15 moves upward to release the pressure on the inclined block 46, and the second spring pushes the inclined block 46 to pop out horizontally, so that the inclined block 46 engages with the bottom end of the drive ring 15 to prevent the drive ring 15 from moving downward; the conical block 32 compacts the bottom soil to form a load-bearing platform, which together with the unfolded anchor rod 16 provides pull-out resistance, thereby avoiding the problem of the inclinometer tube 1 moving upward due to the buoyancy of groundwater and drilling mud.

[0050] In this embodiment, a control seat 41 is also included. The control seat 41 is detachably mounted on the orifice mounting seat 2 by screws. A through-hole is provided in the middle of the control seat 41. A control ring 42 is connected to the through-hole by a bearing. The control ring 42 is provided with an insertion hole 43 corresponding to the limit rod 12. A ratchet 44 is sleeved on the outer circumference of the control ring 42. A pawl 45 that meshes with the ratchet 44 is provided on the control seat 41.

[0051] Because there is a gap between the inclinometer tube 1 and the borehole wall, after all the inclinometer tubes 1 are spliced ​​together and lowered into the borehole, the uppermost inclinometer tube 1 is higher than the borehole mounting base 2. The operator aligns the insertion hole 43 on the control ring 42 with the limiting rod 12 of the uppermost inclinometer tube 1 and inserts it vertically. At the same time, the control base 41 is installed on the borehole mounting base 2 with screws. Then, the control ring 42 is rotated (which can be driven by a motor). The upper annular block 4 is rotated synchronously through the limiting rod 12. The rotation of the annular block 4 is transmitted to the lower annular block 4 through the connecting rod 11 to ensure that the upper and lower annular blocks 4 move synchronously. The annular blocks 4 between different sections of the inclinometer tube 1 are connected by the limiting rod 12 and the limiting hole 13, thereby driving the annular blocks 4 of all the inclinometer tubes 1 to rotate synchronously.

[0052] The arc-shaped blocks 7 arranged circumferentially on the annular block 4 undergo angular displacement as they rotate, and the arc-shaped grooves 8 on them push the internal guide wheels 9 to slide. The guide wheels 9 are rigidly connected to the support blocks 5 through the connectors 6, which converts the curvilinear motion of the arc-shaped grooves 8 into the linear radial motion of the support blocks 5. When the support blocks 5 contact the inner wall of the borehole, continued rotation will increase the clamping force (which can be judged by the torque). Finally, the inclinometer tube 1 is fixed in the hole by the support blocks 5 distributed around the perimeter. It is possible to set the center of the inclinometer tube 1 to coincide with the center of the core-pulling hole, which ensures the measurement accuracy of the inclinometer tube 1. As long as the verticality of the borehole is ensured, the verticality of the inclinometer tube 1 can be guaranteed. The ratchet 44 and the pawl 45 are linked to ensure that the control ring 42 will not reverse and become loose. Finally, the inclinometer can measure the inclination angle segment by segment along the guide groove inside the spliced ​​inclinometer tube 1, and the horizontal displacement can be calculated by integration.

[0053] When it is necessary to remove the device, simply remove the pawl 45, then reverse the control ring 42 to retract the support block 5, and the inclinometer tube 1 can be pulled out.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for predicting deep horizontal displacement at the toe of an embankment slope using inclinometers, characterized in that: It includes a survey tube, a bottom seal, and a borehole mounting base. The borehole mounting base is fixed to the borehole opening. The bottom seal is installed at the bottom end of the lowest survey tube. The survey tube has a fixing cylinder at both the top and bottom ends. The two fixing cylinders on both sides abut against the inner wall of the borehole through a support component. The survey tubes are connected into a whole by a splicing structure. The support assembly includes an annular block, a support block, and a connector. The annular block is rotatably installed inside the fixed cylinder, and has several arc-shaped blocks evenly spaced around its circumference. The outer wall of the fixed cylinder has several openings. The support block passes through the openings and slides against the inner wall of the openings via the connector at its inner end. The arc-shaped blocks have arc-shaped grooves, and guide wheels slide within the grooves. These guide wheels are connected to the connector, thereby driving the support block to extend and retract radially by rotating the annular block, achieving adjustable contact with the inner wall of the borehole. The upper and lower ends of the fixed cylinder have several slots, and several connecting rods are connected between the annular blocks on the upper and lower sides through these slots. The top of the upper annular block has a limiting rod, which extends through the slots to the bottom of the lower annular block above the fixed cylinder, where a limiting hole is provided. When the inclinometer tubes are spliced, the limiting rod is inserted into the adjacent limiting hole to achieve axial transmission. The bottom sealing includes an anchoring cylinder and a driving ring. The anchoring cylinder is hinged with multiple anchoring rods, and the driving ring is slidably assembled on the anchoring cylinder. Moving the driving ring upward can unfold the anchoring rods and enhance the bottom anchoring stability. The assembly structure includes several supports distributed on the outer periphery of the upper fixed cylinder. Each support has a sliding rod, on which a sliding block is slidably mounted. A return spring connected to the sliding block is sleeved on the sliding rod. A metal plate with a hook-shaped upper end is connected to the upper end of the sliding block. Several corresponding slots are formed on the outer periphery of the lower fixed cylinder. When the support block is in the retracted state, the sliding block protrudes from the surface of the support block. A mounting hole is formed in the center of the orifice mounting base. The mounting hole is connected to a rotating seat by a bearing. The rotating seat has a lowering hole in the middle, the diameter of which matches the outer contour of the support block in the stored state, ensuring that the support block can pass smoothly when the inclinometer tube is lowered. The inner wall of the lowering hole has several lowering grooves evenly distributed, the positions of which correspond one-to-one with the slide. When the slide is not aligned with the lowering groove, the slide will be stuck at the top edge of the lowering hole, thus blocking the inclinometer tube from being lowered further. Only when the slide and the lowering groove are completely aligned can the inclinometer tube pass smoothly.

2. The inclinometer deep horizontal displacement prediction device at the toe of an embankment according to claim 1, characterized in that: The upper end of the upper fixing cylinder extends upward and beyond the top of the inclinometer tube to form a protective section. Several fastening rods are evenly distributed around the top of the inclinometer tube. The bottom end of the lower fixing cylinder is higher than the bottom end of the inclinometer tube to form a docking area. Fastening holes corresponding to the positions of the fastening rods are opened at the bottom end of the inclinometer tube.

3. The device for predicting deep horizontal displacement at the toe of an embankment slope using an inclinometer as described in claim 1, characterized in that: The side end of the orifice mounting base is evenly provided with several mounting holes; the top outer circumference of the rotating base is provided with several kick plates.

4. The inclinometer deep horizontal displacement prediction device at the toe of an embankment according to claim 2, characterized in that: The top of the anchoring cylinder is provided with several plug-in rods corresponding to the fastening holes, and the top of the anchoring cylinder is connected to a plug-in tube, and the bottom end of the plug-in tube is connected to a conical block. The outer diameter of the drive ring is larger than the outer diameter of the anchoring cylinder. The outer wall of the anchoring cylinder is provided with several sliding grooves at equal intervals, and the sliding grooves extend into the interior of the anchoring cylinder. The inner end face of the drive ring is provided with several drive blocks that are slidably connected to the sliding grooves, and the inner end of each drive block is connected to an adjusting block. The anchoring cylinder is provided with a receiving opening, and the bottom end of the receiving opening is provided with a hinge seat. The anchoring rod is provided with a key hole, and the key hole is connected to the hinge seat. A pull rope is connected between the adjusting block and the bottom end of the anchoring rod. When the drive block moves upward, the anchoring rod is pulled out synchronously by the pull rope.

5. The inclinometer deep horizontal displacement prediction device at the toe of an embankment according to claim 4, characterized in that: The upper outer circumferential surface of the anchoring cylinder is provided with a bayonet, and a second spring is provided in the bayonet. The other end of the second spring is connected to an inclined block, and the inclined block moves horizontally along the bayonet. When the drive ring moves upward and releases the pressure on the inclined block, the second spring pushes the inclined block to extend horizontally outward, thereby achieving mechanical self-locking.

6. The inclinometer deep horizontal displacement prediction device at the toe of an embankment according to claim 1, characterized in that: It also includes a control seat, which is detachably mounted on the orifice mounting base by screws. The control seat has a through-hole in the middle, and a control ring is connected to the through-hole by a bearing. The control ring has a hole corresponding to the limit rod. A ratchet is fitted on the outer circumference of the control ring, and a pawl that meshes with the ratchet is provided on the control seat.

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