Device for predicting deep horizontal displacement of inclinometer at slope toe of embankment

Abstract

The invention discloses a device for predicting deep horizontal displacement of an inclinometer at a slope toe of a road bank. The device comprises the inclinometer, a sealing bottom and an orifice mounting seat. The orifice mounting seat is fixed at a drilling orifice, and the sealing bottom is mounted at the bottom end of the bottommost inclinometer. Fixing cylinders are arranged at the upper end and the lower end of each inclinometer pipe, the fixing cylinders on the two sides abut against the inner wall of a drill hole through supporting assemblies, and the inclinometer pipes are connected into a whole through splicing structures; the supporting assembly comprises an annular block, a supporting block and a connecting piece, the annular block is rotatably installed in the fixing cylinder, and a plurality of arc-shaped blocks are arranged in the circumferential direction of the annular block at equal intervals; a plurality of openings are formed in the outer wall of the fixing cylinder, the supporting blocks penetrate through the openings through connecting pieces at the inner ends and are in sliding connection with the inner walls of the openings, arc-shaped grooves are formed in the arc-shaped blocks, and guide wheels slide in the grooves; rapid and accurate butt joint is achieved through a modular assembly structure, the advantages of being capable of being repeatedly used, convenient and fast to install and the like are achieved, and the monitoring cost can be remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of inclinometer tubes, in particular to a device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment. Background Art

[0002] When constructing road or railway embankments in soft soil areas, improper backfilling can easily cause embankment slope collapse due to the low bearing capacity of the soft soil foundation. To prevent this, monitoring the foundation during construction is essential. One measure to control slope collapse is to install inclinometer tubes at the toe of the embankment to monitor deep horizontal displacement at the toe. This deep horizontal displacement is typically measured using inclinometer tubes, so improper tube placement can lead to measurement errors.

[0003] Currently, there are two methods for deploying inclinometer tubes. For support structures such as cast-in-place slabs, piles, and walls, the inclinometer tubes need to be fixed to the steel cage before the cage is lowered. When pouring concrete, they are poured inside the support structure together with the steel cage. This method is called the pre-placement pouring method. For soil and rock slopes, deep holes are excavated using drilling machinery. After the inclinometer tubes are lowered, the gaps are backfilled with bentonite. This method is called the post-placement implantation method. Whether the inclinometer tubes are pre-buried or post-implanted, they are consumables that require a one-time investment. The material and labor costs for deploying the monitoring tubes alone range from over a thousand yuan to tens of thousands of yuan. Under normal circumstances, deploying inclinometer tubes is expensive, and the segmented splicing requires on-site welding or bolting, which is cumbersome and poses a risk of falling. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for predicting the deep horizontal displacement of an inclinometer tube at the toe of an embankment, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment, comprising an inclinometer tube, a bottom seal, and an orifice mounting seat. The orifice mounting seat is fixed to the orifice of the borehole, and the bottom seal is installed at the bottom end of the lowest inclinometer tube. The inclinometer tube is provided with fixing tubes at the upper and lower ends, and the fixing tubes on both sides abut against the inner wall of the borehole through a support assembly. The inclinometer tubes are connected to form a whole by a spliced ​​structure. The supporting assembly comprises an annular block, a supporting block and a connecting piece, the annular block is rotatably mounted inside the fixed cylinder, and a plurality of arc blocks are equidistantly arranged on the circumference of the fixed cylinder; a plurality of openings are opened on the outer wall of the fixed cylinder, and the supporting block passes through the opening through the connecting piece at the inner end and is slidably connected to the inner wall of the opening, and the arc block is provided with an arc groove, and a guide wheel slides in the groove, and the guide wheel is connected to the connecting piece, so that the supporting block is driven to radially extend and retract by rotating the annular block to achieve adjustable abutment with the inner wall of the drill hole; a plurality of slots are provided at the upper and lower ends of the fixed cylinder, and a plurality of connecting rods are connected between the annular blocks on the upper and lower sides through the slots; a limiting rod is provided on the top of the upper annular block, and the limiting rod extends through the slot to the upper part of the fixed cylinder and a limiting hole is provided at the bottom of the lower annular block. When the inclinometer tube is spliced, the limiting rod is inserted into the adjacent limiting hole to realize axial transmission; The bottom cover includes an anchoring tube and a driving ring. The anchoring tube is hinged with multiple anchoring rods, and the driving ring is slidably assembled on the anchoring tube. Moving the driving ring upward can unfold the anchoring rods to enhance the bottom anchoring stability.

[0006] Furthermore, the spliced ​​structure includes a number of supports distributed on the outer circumference of the upper fixed tube, a sliding rod is provided on the support, a sliding seat is slidably assembled on the sliding rod, and a return spring connected to the sliding seat is sleeved on the sliding rod, a metal sheet is connected to the upper end of the sliding seat, and the upper end of the metal sheet is a hook structure; the outer circumference of the lower fixed tube is provided with a number of bayonet sockets corresponding to the supports.

[0007] Furthermore, the upper end of the upper fixed tube extends upward and beyond the top end of the inclinometer tube to form a protective section. Several fastening rods are evenly distributed circumferentially around the top end of the inclinometer tube. The bottom end of the lower fixed tube is higher than the bottom end of the inclinometer tube to form a docking area. The bottom end of the inclinometer tube is provided with a fastening hole corresponding to the position of the fastening rod.

[0008] Furthermore, when the support block is in the stowed state, the slide protrudes from the support block surface; a mounting hole is defined in the center of the orifice mounting seat, a swivel seat is connected to a bearing within the mounting hole, and a lowering hole is defined in the center of the swivel seat. The hole diameter matches the outer dimensions of the support block in the stowed state, ensuring smooth passage of the support block when the inclinometer tube is lowered; the inner wall of the lowering hole is uniformly defined with a plurality of lowering grooves, each corresponding to the position of the slide. If the slide is not aligned with the lowering grooves, it will become stuck on the top edge of the lowering hole, thereby preventing the inclinometer tube from being lowered further; only when the slide is fully aligned with the lowering grooves can the inclinometer tube pass smoothly.

[0009] Furthermore, a plurality of mounting holes are evenly arranged on the side ends of the orifice mounting seat; a plurality of kick plates are distributed on the top outer peripheral surface of the rotating seat, and a plurality of rolling balls are embedded in the top end of the rotating seat for rotation to reduce friction with the bottom end of the sliding seat and facilitate rotation of the rotating seat.

[0010] Furthermore, the top of the anchor tube is provided with a plurality of plug-in rods corresponding to the fastening holes, and the top of the anchor tube is connected to the plug-in tube, and the bottom end thereof is connected to a conical block, and the outer diameter of the driving ring is larger than the outer diameter of the anchor tube; the outer wall of the anchor tube is provided with a plurality of sliding grooves at equal intervals, and the sliding grooves pass through the interior of the anchor tube, and the inner end surface of the driving ring is provided with a plurality of driving blocks slidably connected to the sliding grooves, and the inner end of each driving block is connected to an adjusting block; a receiving port is provided on the anchor tube, and a hinge seat is provided at the bottom end of the receiving port, a key hole is provided on the anchor rod, and the key hole is connected to the hinge seat, and a pull rope is connected between the adjusting block and the bottom end of the anchor rod, and when the driving block moves upward, the anchor rod is pulled to unfold synchronously by the pull rope.

[0011] Furthermore, a bayonet is provided on the upper outer peripheral surface of the anchoring cylinder, and a second spring is arranged in the bayonet. The other end of the second spring is connected to a bevel block, and the bevel block moves horizontally along the bayonet. When the driving ring moves upward to release the pressure on the bevel block, the second spring pushes the bevel block to extend horizontally outward to achieve mechanical self-locking.

[0012] Furthermore, it also includes a control seat, which is detachably mounted on the orifice mounting seat by screws, a through-hole is opened in the middle of the control seat, a control ring is connected to the bearing on the through-hole, a socket corresponding to the limit rod is opened on the control ring, a ratchet is provided on the outer circumference of the control ring, and a pawl engaged with the ratchet is provided on the control seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Modular assembly and self-locking connection structure The combined structure (sliding seat, sheet metal hook, and bayonet) allows for quick and precise docking of the inclinometer casing. Combined with the elastic preload of the return spring, this creates a stable connection, avoiding the inefficiency and loosening issues of traditional bolt fastening. During assembly, the offset design of the sliding seat and rotating seat provides a mechanical stop, preventing the inclinometer casing from accidentally falling and significantly improving construction safety.

[0014] 2. Radial support system that adapts to the inner wall of the drill hole A ring block, arc groove, and guide wheel linkage mechanism drives the radial expansion and contraction of the support block. A control ring uniformly adjusts all support components of the inclinometer casing to ensure tight contact with the borehole inner wall. A ratchet and pawl mechanism provides self-locking protection, preventing loosening during retraction. This ensures accurate alignment of the inclinometer casing center with the borehole axis while accommodating installation requirements for various borehole diameters.

[0015] 3. Active bottom anchoring and anti-floating design The bottom seal is integrated with an anchor rod deployment mechanism, which triggers the pull rope traction through the relative displacement of the drive ring and the anchor cylinder, so that the anchor rod is embedded in the soil layer in a barb-like shape; the inclined block pop-up 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.

[0016] 4. Improved construction convenience and safety The hole mounting base and the rotating base form a double guide protection to reduce the disturbance of the hole soil; the segmented lowering and splicing process is standardized to reduce the difficulty of manual operation. The device can be disassembled and assembled repeatedly, and the support components can be easily removed after being folded, taking into account both engineering economy and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural disassembly diagram of a device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to the present invention; Figure 2 This is an assembly diagram of the inclinometer casing structure of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle part; Figure 4 for Figure 2 A partial enlarged view of point B in the middle; Figure 5 This is a cross-sectional view of the inclinometer casing joint of the present invention; Figure 6 Schematic diagram of the back cover structure of the present invention; Figure 7 is a cross-sectional view of the back cover structure of the present invention; Figure 8 This is a schematic diagram of the annular block structure of the present invention; Figure 9 This is a schematic diagram of the structure of the orifice mounting seat of the present invention; Figure 10 It is a schematic diagram of the control seat structure of the present invention.

[0018] In the figure, the inclinometer tube 1, the orifice mounting seat 2, the fixing tube 3, the annular block 4, the support block 5, the connecting piece 6, the arc block 7, the arc groove 8, the guide wheel 9, the slot 10, the connecting rod 11, the limit rod 12, the limit hole 13, the anchor tube 14, the driving ring 15, the anchor rod 16, the support 17, the slide rod 18, the slide seat 19, the reset spring 20, the metal sheet 21, the bayonet 22, the tightening Fixed rod 23, rotating seat 25, lowering hole 26, lowering slot 27, mounting hole 28, kick plate 29, plug rod 30, plug tube 31, conical block 32, slide groove 33, drive block 34, adjustment block 35, storage port 36, hinged seat 37, keyhole 38, pull rope 39, control seat 41, control ring 42, jack 43, ratchet 44, pawl 45, bevel block 46. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 10 As shown, a device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment slope comprises an inclinometer tube 1, a bottom seal, and an orifice mounting seat 2. The orifice mounting seat 2 is fixed to the orifice of a borehole, and the bottom seal is mounted on the bottom end of the lowest inclinometer tube 1. Fixing cylinders 3 are provided at the upper and lower ends of the inclinometer tube 1. The fixing cylinders 3 on both sides abut against the inner wall of the borehole through a support assembly. The inclinometer tubes 1 are connected to form a whole by a splicing structure. The supporting assembly includes an annular block 4, a supporting block 5 and a connecting piece 6. The annular block 4 is rotatably mounted inside the fixed cylinder 3, and a number of arc blocks 7 are equidistantly arranged around the circumference thereof; a number of openings are opened on the outer wall of the fixed cylinder 3, and the supporting block 5 passes through the opening through the connecting piece 6 at the inner end and is slidably connected to the inner wall of the opening; an arc groove 8 is provided on the arc block 7, and a guide wheel 9 slides in the groove, and the guide wheel 9 is connected to the connecting piece 6, so that the supporting block 5 is driven to radially extend and retract by rotating the annular block 4 to achieve adjustable abutment with the inner wall of the borehole; a number of slots 10 are provided at the upper and lower ends of the fixed cylinder 3, and a number of connecting rods 11 are connected between the annular blocks 4 on the upper and lower sides through the slots 10; a limiting rod 12 is provided on the top of the upper annular block 4, and the limiting rod 12 extends through the slot 10 to the upper part of the fixed cylinder 3, and a limiting hole 13 is provided at the bottom of the lower annular block 4. When the inclinometer tube 1 is spliced, the limiting rod 12 is inserted into the adjacent limiting hole 13 to realize axial transmission; The bottom cover includes an anchoring tube 14 and a driving ring 15. The anchoring tube 14 is hinged with multiple anchoring rods 16, and the driving ring 15 is slidably assembled on the anchoring tube 14. Moving the driving ring 15 upward can unfold the anchoring rods 16 to enhance the bottom anchoring stability.

[0021] In this embodiment, the spliced ​​structure includes a plurality of supports 17 distributed on the outer peripheral surface of the upper fixed tube 3, a slide rod 18 is provided on the support 17, a slide 19 is slidably assembled on the slide rod 18, and a return spring 20 connected to the slide 19 is sleeved on the slide rod 18, and a metal sheet 21 is connected to the upper end of the slide 19, and the upper end of the metal sheet 21 is in a hook structure; the outer peripheral surface of the lower fixed tube 3 is provided with a plurality of bayonet holes 22 corresponding to the supports 17.

[0022] In this embodiment, the upper end of the upper fixed tube 3 extends upward and beyond the top of the inclinometer tube 1 to form a protective section. A number of fastening rods 23 are evenly distributed around the top of the inclinometer tube 1. The bottom end of the lower fixed tube 3 is higher than the bottom end of the inclinometer tube 1 to form a docking area. The bottom end of the inclinometer tube 1 is provided with fastening holes corresponding to the positions of the fastening rods 23.

[0023] In this embodiment, when the support block 5 is in the storage state, the slide 19 protrudes from the surface of the support block 5; a mounting hole 28 is provided in the middle of the orifice mounting seat 2, and a rotating seat 25 is connected to the bearing in the mounting hole 28. A lowering hole 26 is provided in the middle of the rotating seat 25, and its aperture matches the outer contour size of the support block 5 in the storage state, ensuring that the support block 5 can pass smoothly when the inclinometer tube 1 is lowered; a plurality of lowering grooves 27 are evenly provided on the inner wall of the lowering hole 26, and their positions correspond one-to-one with the slide 19. When the slide 19 is not aligned with the lowering grooves 27, the slide 19 will be stuck on the top edge of the lowering hole 26, thereby preventing the inclinometer tube 1 from continuing to be lowered; only when the slide 19 is completely aligned with the lowering grooves 27 can the inclinometer tube 1 pass smoothly. A plurality of mounting holes 28 are evenly provided on the side ends of the orifice mounting seat 2; a plurality of kick plates 29 are distributed on the top outer circumference of the rotating seat 25.

[0024] The installation and splicing method of the inclinometer casing 1 is as follows: After the drilling is completed, the hole mouth mounting seat 2 is first installed at the hole mouth through the ground nail. The hole mouth mounting seat 2 can effectively protect the hole mouth, prevent the inclinometer tube 1 from rubbing against the hole mouth edge during the lowering process, and avoid soil loosening or hole collapse. On the other hand, it can serve as a reference guide structure for the installation of the inclinometer tube 1 to ensure that the verticality of the inclinometer tube 1 is consistent with the design axis.

[0025] When lowering the inclinometer tube 1, the support block 5 is in a fully retracted state, and then the inclinometer tube 1 is sunk 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 worker accidentally lets go of the inclinometer tube 1 during the lowering process, when the top end of the inclinometer tube 1 falls to the rotating seat 25, it will be stuck on the rotating seat 25 because the outer contour of the slide 19 is larger than the size of the lowering hole 26, forming a mechanical stop, thereby preventing the inclinometer seat from falling directly to the bottom of the hole. During normal lowering, the inclinometer tube 1 is also sunk until the slide 19 abuts against the rotating seat 25, and then the splicing work begins.

[0026] Since the inclinometer tube 1 is heavy and the slide 19 is slidably mounted on the support 17, when the slide 19 abuts the rotating seat 25, the inclinometer tube 1 will continue to sink for a distance, while the slide 19 remains in position. This causes the slide 19 to compress the return spring 20 and simultaneously lift the metal sheet 21, so that its hook portion completely protrudes from the upper edge of the fixed tube 3. At this time, another section of inclinometer tube 1 is inserted into the lower pipe section, and the fastening rod 23 is inserted into the fastening hole. At the same time, since the metal sheet 21 has a certain elasticity, during the insertion of the other section of inclinometer tube 1, the metal sheet 21 abuts along the surface of the inclinometer tube 1. After the inclinometer tube 1 is fully inserted, the hook at the top of the metal sheet 21 automatically locks into the bayonet 22. After completing the preliminary docking, the staff kicks the kick plate 29 to rotate and adjust the angle of the rotating seat 25 so that the lowering groove 27 is aligned with the slide 19. At this time, the inclinometer tube 1 can continue to sink to complete the docking. At the same time, the slide 19 loses the restriction of the rotating seat 25, and the reset spring 20 is released, driving the slide 19 to move downward and reset, thereby driving the metal sheet 21 to move downward synchronously, and finally making the hook of the metal sheet 21 firmly hook the lower end of the bayonet 22. The elastic force of the reset spring 20 keeps the metal sheet 21 in a taut state, forming a stable connection; and after the slide 19 of this section sinks out of the rotating seat 25, the staff kicks the kick plate 29 to re-align the lowering groove 27 and the slide 19, and then the splicing work of the next section of the inclinometer tube 1 can be carried out.

[0027] In this embodiment, the top of the anchor tube 14 is provided with several plug-in rods 30 corresponding to the fastening holes, and the top of the anchor tube 14 is connected to the plug-in tube 31, and the bottom end thereof is connected to a conical block 32. The outer diameter of the drive ring 15 is larger than the outer diameter of the anchor tube 14; the outer wall of the anchor tube 14 is evenly spaced with several sliding grooves 33, and the sliding grooves 33 pass through the interior of the anchor tube 14, and the inner end surface of the drive ring 15 is provided with several driving blocks 34 slidably connected to the sliding grooves 33, and the inner end of each driving block 34 is connected to an adjusting block 35; a receiving port 36 is provided on the anchor tube 14, and a hinge seat 37 is provided at the bottom end of the receiving port 36, and a key hole 38 is provided on the anchor rod 16, and the key hole 38 is connected to the hinge seat 37, and a pull rope 39 is connected between the adjusting block 35 and the bottom end of the anchor rod 16. When the driving block 34 moves upward, the anchor rod 16 is pulled to unfold synchronously by the pull rope 39.

[0028] In this embodiment, a bayonet 22 is provided on the upper outer peripheral surface of the anchor tube 14, and a second spring is provided in the bayonet 22. The other end of the second spring is connected to a bevel block 46, and the bevel block 46 moves horizontally along the bayonet 22. When the drive ring 15 moves upward to release the pressure on the bevel block 46, the second spring pushes the bevel block 46 to extend horizontally outward to achieve mechanical self-locking.

[0029] When the lowest layer of the inclinometer tube 1 reaches the bottom of the hole, the staff continues to press down on the inclinometer tube 1. At this time, the conical block 32 at the bottom of the anchor tube 14 is first inserted into the soil layer, and the dense soil is broken by the pointed cone structure. The driving ring 15 is blocked by the hard interface at the bottom of the hole because its outer diameter is larger than that of the anchor tube 14, forming a relative displacement triggering condition; the inclinometer tube 1 continues to press down so that the anchor tube 14 continues to penetrate into the soil layer, while the driving ring 15 remains stationary; the driving ring 15 and the anchor tube 14 produce an axial displacement difference, which guides the driving block 34 to move upward through the slide groove 33; the driving block 34 drives the adjusting block 35 to move upward synchronously, tightening the adjustment block 35 with the anchor rod The pull rope 39 is connected to the bottom end of 16; the traction of the pull rope 39 causes the anchor rod 16 to rotate around the hinge seat 37; the unfolded anchor rod 16 forms a barb 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, thereby engaging with the bottom end of the drive ring 15 through the inclined block 46 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 casing 1 moving upward due to the buoyancy of groundwater and drilling mud water.

[0030] In this embodiment, a control seat 41 is also included, which is detachably mounted on the orifice mounting seat 2 by screws. A through-hole is provided in the middle of the control seat 41, and a control ring 42 is connected to the bearing on the through-hole. A socket 43 corresponding to the limit rod 12 is provided on the control ring 42. A ratchet 44 is sleeved on the outer peripheral surface of the control ring 42, and a pawl 45 engaged with the ratchet 44 is provided on the control seat 41.

[0031] Because there is a gap between the inclinometer casings 1 and the hole wall, after all the inclinometer casings 1 are spliced ​​and sunk into the hole, the upper part of the uppermost inclinometer casing 1 is higher than the hole mouth mounting seat 2. The staff aligns the socket 43 on the control ring 42 with the limit rod 12 of the uppermost inclinometer casing 1 and vertically inserts it. At the same time, the control seat 41 is screwed to the hole mouth mounting seat 2. The control ring 42 is then rotated (which can be driven by a motor), and the upper annular block 4 is driven to rotate synchronously via the limit rod 12. The rotation of the annular block 4 is transmitted to the lower annular block 4 via the connecting rod 11, ensuring the synchronous movement of the upper and lower annular blocks 4. The annular blocks 4 between different sections of inclinometer casing 1 are connected by the limit rod 12 and the limit hole 13, thereby driving the annular blocks 4 of all inclinometer casings 1 to rotate synchronously. The circumferentially arranged arc blocks 7 of the annular block 4 undergo angular displacement as they rotate, and the arc grooves 8 thereon push the internal guide wheel 9 to slide; the guide wheel 9 is rigidly connected to the support block 5 via the connector 6, converting the curvilinear motion of the arc groove 8 into linear radial motion of the support block 5. When the support block 5 contacts the inner wall of the borehole, continued rotation increases the holding force (which can be judged by the torque feel). Ultimately, the inclinometer tube 1 is fixed in the hole by the support blocks 5 distributed around it. The center of the inclinometer tube 1 can be set to coincide with the center of the core-pulling hole to ensure the measurement accuracy of the inclinometer tube 1. As long as the verticality of the borehole is guaranteed, 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 does not reverse and become loose. Finally, the inclinometer can measure the inclination section by section along the guide groove inside the spliced ​​inclinometer tube 1, and the horizontal displacement can be calculated by integration.

[0032] When it is necessary to remove the casing 1, the pawl 45 only needs to be removed, and the control ring 42 can be reversed to drive the support block 5 to retract, so that the inclinometer casing 1 can be pulled out.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment, characterized by: It includes an inclinometer tube, a bottom seal and an orifice mounting seat. The orifice mounting seat is fixed to the borehole orifice. The bottom seal is installed at the bottom end of the lowest inclinometer tube. The upper and lower ends of the inclinometer tube are provided with fixing cylinders. The fixing cylinders on both sides are in contact with the inner wall of the borehole through the support assembly. The inclinometer tubes are connected into a whole through a splicing structure. The supporting assembly comprises an annular block, a supporting block and a connecting piece, the annular block is rotatably mounted inside the fixed cylinder, and a plurality of arc blocks are equidistantly arranged on the circumference of the fixed cylinder; a plurality of openings are opened on the outer wall of the fixed cylinder, and the supporting block passes through the opening through the connecting piece at the inner end and is slidably connected to the inner wall of the opening, and the arc block is provided with an arc groove, and a guide wheel slides in the groove, and the guide wheel is connected to the connecting piece, so that the supporting block is driven to radially extend and retract by rotating the annular block to achieve adjustable abutment with the inner wall of the drill hole; a plurality of slots are provided at the upper and lower ends of the fixed cylinder, and a plurality of connecting rods are connected between the annular blocks on the upper and lower sides through the slots; a limiting rod is provided on the top of the upper annular block, and the limiting rod extends through the slot to the upper part of the fixed cylinder and a limiting hole is provided at the bottom of the lower annular block. When the inclinometer tube is spliced, the limiting rod is inserted into the adjacent limiting hole to realize axial transmission; The bottom cover includes an anchoring tube and a driving ring. The anchoring tube is hinged with multiple anchoring rods, and the driving ring is slidably assembled on the anchoring tube. Moving the driving ring upward can unfold the anchoring rods to enhance the bottom anchoring stability.

2. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 1, characterized in that: The spliced ​​structure includes several supports distributed on the outer circumference of the upper fixed tube, a sliding rod is provided on the support, a sliding seat is slidably assembled on the sliding rod, and a return spring connected to the sliding seat is sleeved on the sliding rod, a metal sheet is connected to the upper end of the sliding seat, and the upper end of the metal sheet is a hook structure; the outer circumference of the lower fixed tube is provided with several bayonet sockets corresponding to the supports.

3. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 2, characterized in that: The upper end of the upper fixed tube 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 fixed tube is higher than the bottom end of the inclinometer tube to form a docking area. The bottom end of the inclinometer tube is provided with fastening holes corresponding to the positions of the fastening rods.

4. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 2, characterized in that: When the support block is in the storage state, the slide protrudes from the surface of the support block; a mounting hole is provided in the middle of the orifice mounting seat, a rotating seat is connected to the bearing in the mounting hole, and a lowering hole is provided in the middle of the rotating seat, the aperture of which matches the outer contour size of the support block in the storage state, ensuring that the support block can pass smoothly when the inclinometer tube is lowered; a plurality of lowering grooves are evenly provided on the inner wall of the lowering hole, and their positions correspond one to one with the slide seat. When the slide seat is not aligned with the lowering groove, the slide seat will be stuck at the top edge of the lowering hole, thereby preventing the inclinometer tube from continuing to be lowered; only when the slide seat is completely aligned with the lowering groove can the inclinometer tube pass smoothly.

5. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 4, characterized in that: A plurality of mounting holes are evenly arranged on the side ends of the orifice mounting seat; and a plurality of kick plates are distributed on the top outer peripheral surface of the rotating seat.

6. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 3, characterized in that: The top of the anchor tube is provided with several plug-in rods corresponding to the fastening holes, and the top of the anchor tube is connected to the plug-in tube, and the bottom end of the anchor tube is connected to a conical block, and the outer diameter of the driving ring is larger than the outer diameter of the anchor tube; the outer wall of the anchor tube is provided with several sliding grooves at equal intervals, and the sliding grooves pass through the interior of the anchor tube, and the inner end surface of the driving ring is provided with several driving blocks slidably connected to the sliding grooves, and the inner end of each driving block is connected to an adjusting block; a receiving port is provided on the anchor tube, and a hinge seat is provided at the bottom end of the receiving port, a key hole is provided on the anchor rod, and the key hole is connected to the hinge seat, and a pull rope is connected between the adjusting block and the bottom end of the anchor rod, and when the driving block moves upward, the anchor rod is pulled to unfold synchronously by the pull rope.

7. The device for predicting deep horizontal displacement of an inclinometer tube at the toe of an embankment according to claim 6, characterized in that: A bayonet is provided on the upper outer surface of the anchoring cylinder, and a second spring is arranged in the bayonet. The other end of the second spring is connected to a bevel block, and the bevel block moves horizontally along the bayonet. When the driving ring moves upward to release the pressure on the bevel block, the second spring pushes the bevel block to extend horizontally to achieve mechanical self-locking.

8. The device for predicting deep horizontal displacement of an inclinometer tube 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 seat by screws. A through-hole is provided in the middle of the control seat, and a control ring is connected to the bearing on the through-hole. A socket corresponding to the limit rod is provided on the control ring, and a ratchet is provided on the outer circumference of the control ring. A pawl engaged with the ratchet is provided on the control seat.

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