High-stability observation pillar for dam deformation monitoring

Abstract

The invention relates to the technical field of dam deformation monitoring, in particular to a high-stability observation pillar for dam deformation monitoring, which comprises a dam body, an embedded groove, a base body, an upper observation pillar and a forced centering disc, a splicing pipe assembly is embedded in the inner side of the base body, the splicing pipe assembly comprises a threaded plug, and an insertion hole is formed in the upper end of the threaded plug; a first splicing piece is attached to the side face of the threaded plug, a second splicing piece is attached to the side face of the threaded plug, a sliding assembly is slidably connected to the lower end of the first splicing piece, the first splicing piece comprises a first splicing pipe component, a first threaded groove is formed in the side, close to the threaded plug, of the first splicing pipe component, and a sliding limiting groove is formed in the bottom end of the first splicing pipe component; according to the method, the observation pillar foundation can be accurately and stably damaged, meanwhile, when the observation pillar and the dam body are separated, disturbance to the dam body is reduced to the maximum extent, and it is ensured that the dam body structure around the observation pillar pre-buried area is complete.

Description

Technical Field

[0001] The present invention relates to the technical field of dam deformation monitoring, in particular to a high-stability observation pier for dam deformation monitoring. Background Art

[0002] Dam deformation monitoring is a core measure for ensuring the safety of water conservancy projects. Dam observation piers are essential components of dam deformation monitoring systems. They are typically installed at key locations on the dam, such as the crest and slope. By providing a stable benchmark and instrument platform, they ensure long-term and accurate capture of minute dam deformation information. This is crucial for assessing dam structural safety and promptly identifying potential risks. Dam observation piers are usually cast with cement. This is because cement has high strength and stability, and can withstand the influence of the external environment and the weight of the observation equipment, ensuring the stability of the observation pier structure itself. At the same time, the thermal expansion coefficient of cement is close to that of the dam body. Part of it is buried in the dam and can be rigidly combined with the dam body to form a tight whole. This ensures that the monitoring point deforms synchronously with the dam, and accurately obtains the displacement, settlement and other deformation data of the dam under different working conditions. However, when there are safety hazards in the dam and hazard removal and reinforcement projects are needed, if the construction involves the area where the observation pier is located, if the observation pier is not dismantled, reinforcement operations such as concrete pouring and anti-seepage treatment will damage the foundation of the observation pier or affect its stability. However, the dam observation pier is generally closely connected with the concrete structure of the dam and is integrated into one, making it difficult to dismantle the dam observation pier. If the dismantling process is not careful, it will cause greater damage to the main structure of the dam and cause invisible damage that is difficult to repair. Therefore, in response to the above problems, a high-stability observation pier for dam deformation monitoring is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-stability observation pier for dam deformation monitoring, so as to solve the problem that the dam observation pier is generally closely connected with the concrete structure of the dam and is integrated into one, making the dam observation pier difficult to dismantle. If the dismantling process is not careful, it will cause greater damage to the main structure of the dam and cause invisible damage that is difficult to repair.

[0004] To achieve the above object, the present invention provides the following technical solutions: A high-stability observation pier for dam deformation monitoring includes a dam body, an embedded groove, a base, an upper observation pier and a forced centering plate. A splicing pipe assembly is embedded and installed inside the base. The splicing pipe assembly includes a threaded plug, an insertion hole is provided at the upper end of the threaded plug, a first splicing piece is attached to the side of the threaded plug, a second splicing piece is attached to the side of the threaded plug, a sliding assembly is slidably connected to the lower end of the first splicing piece, the first splicing piece includes a first splicing pipe component, a first threaded groove is provided on the side of the first splicing pipe component close to the threaded plug, and the first splicing pipe component A sliding limit groove is provided at the bottom end, a clamping groove is provided on the left and right sides of the first splicing tube component, the second splicing piece includes a second splicing tube component, a second threaded groove is provided on the side of the second splicing tube component close to the threaded plug, and the left and right sides of the second splicing tube component are fixedly connected with clamping strips, a circular hole is provided in the second splicing tube component, the sliding assembly includes an inner tube, a plastic strip is fixedly connected to the inner side of the upper end of the inner tube, a floating block is fixedly connected to the end of the second threaded groove away from the inner tube, a strip hole is provided in the inner tube, and a limited sliding strip is fixedly connected to the outer side of the inner tube.

[0005] As a further optimization of the present invention, a pre-buried groove is provided on the inclined surface of the dam body, a base is provided in the pre-buried groove, an upper observation pier is fixedly connected to the upper end of the base, a forced centering plate is fixedly connected to the upper end of the upper observation pier, a cover assembly is provided on the outer side of the upper observation pier, a positioning support block is fixedly connected to one side of the base, and a guard plate assembly is clamped on the side of the positioning support block away from the base.

[0006] As further optimized content of the present invention, wherein: the bottom end of the base is fixedly connected to the dam body, the guard plate assembly is arranged in the gap between the base and the embedded groove, the upper end face of the upper observation pier and the upper end face of the cover shell assembly are on the same horizontal plane, the horizontal projection of the positioning support block is a right trapezoid, a part of the base is exposed at the upper end of the embedded groove, the upper end area of ​​the upper observation pier is four-fifths of the bottom end area, the cross-section of the upper observation pier is a regular hexagon, and a plurality of the splicing pipe assemblies are provided, and the plurality of splicing pipe assemblies are distributed in the form of a rectangular array below the upper observation pier.

[0007] As a further optimization of the present invention, the cover shell assembly includes a metal sleeve, a hexagonal tube with holes is welded and fixed to the bottom end of the metal sleeve, an inter-tube hole is opened in the hexagonal tube with holes, the inner side of the metal sleeve is tightly attached to the outer side of the upper observation pier, there is a gap between the inner side of the hexagonal tube with holes and the outer side of the upper observation pier, and the hexagonal tube with holes is fixed to the upper end of the base by an expansion bolt.

[0008] As a further optimization of the present invention, the guard plate assembly includes a bonding plate, a groove is provided on the side of the bonding plate close to the base, a vertical plate is fixedly connected to the side of the bonding plate away from the base, a tile is fixedly connected to the side of the vertical plate close to the bonding plate, and a positioning cone is fixedly connected to the bottom end of the bonding plate.

[0009] As a further optimization of the present invention, the upper end of the vertical plate is an arc-shaped structure, the upper end surface of the tile is an arc-shaped setting, the bottom end of the tile is fixedly connected to a bonding plate, and a plurality of tiles are provided, and the multiple tiles are parallel to each other.

[0010] As a further optimization of the present invention, the upper end surface of the threaded plug and the upper end surface of the base are on the same horizontal plane, the depth of the socket is half of the height of the threaded plug, the first splicing piece and the second splicing piece are staggered and spliced ​​with each other, and the sliding assembly is directly below the threaded plug.

[0011] As a further optimization of the present invention, the first thread groove is adapted to the thread provided on the side of the threaded plug, the height of the sliding limit groove is half of the height of the sliding component, and the groove edge of the snap-in groove close to the sliding component is arc-shaped.

[0012] As a further optimization of the present invention, the second thread groove is adapted to the thread set on the side of the threaded plug, the thickness of the clamping strip is one-third of the second splicing tube component, the clamping strip is adapted to the clamping groove, and the circular hole is arranged above the strip hole.

[0013] As a further optimization of the present invention, the outer side of the inner tube is tightly attached to the first splicing tube component and the second splicing tube component at the same time, the length of the plastic strip is one quarter of the inner diameter of the inner tube, a plurality of through holes are provided on the inner side of the floating block, the number of the strip holes is the same as the number of the circular holes, and the limiting sliding strip is slidably connected to the inner side of the sliding limiting groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the guard plate assembly and the splicing tube assembly are provided, so that the observation pier foundation can be destroyed accurately and stably. At the same time, when separating the observation pier from the dam body, the disturbance to the dam body is minimized, ensuring the integrity of the dam body structure around the pre-buried area of ​​the observation pier, and realizing non-destructive disassembly of the observation pier, so that subsequent reinforcement operations such as concrete pouring and anti-seepage treatment can be carried out on the basis of the intact dam body, thereby better improving the quality of the dam body.

[0015] 2. In the present invention, the cover assembly is provided, which not only reduces the direct scouring and erosion of the outer concrete surface of the observation pier by natural factors such as rain, wind, sand, and ultraviolet rays, but also avoids the damage to the observation pier and dam structure caused by stress concentration due to temperature changes. In addition, it also enhances the service performance of the observation pier, improves its anti-overturning ability, and extends the service life of the observation pier.

[0016] 3. In the present invention, by providing a guard plate assembly and a splicing tube assembly, the device introduces a dual-directional destruction mechanism, which transforms the disassembly process of the observation pier from traditional uncontrollable violent demolition to precise and predictable directional destruction, greatly shortening the disassembly time and reducing the labor intensity and operational risks of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation position structure of the guard plate assembly of the present invention; Figure 3 It is a schematic diagram of the cross-section structure of the dam body of the present invention; Figure 4 This is a schematic diagram of the installation position of the splicing pipe assembly of the present invention; Figure 5 This is a schematic structural diagram of the cover assembly of the present invention; Figure 6 is a cross-sectional view of the cover assembly of the present invention; Figure 7 This is a schematic structural diagram of the guard plate assembly of the present invention; Figure 8 This is a schematic diagram of the installation position structure of the positioning cone of the present invention; Figure 9 This is a schematic structural diagram of a spliced ​​pipe assembly according to the present invention; Figure 10 This is a schematic diagram of the exploded structure of the splicing tube assembly of the present invention; Figure 11 This is a schematic structural diagram of the first splicing piece of the present invention; Figure 12 It is a bottom view of the first splicing piece of the present invention; Figure 13 This is a schematic structural diagram of the second splicing piece of the present invention; Figure 14 for Figure 13 A in the middle is an enlarged structural diagram; Figure 15 It is a schematic structural diagram of the sliding assembly of the present invention.

[0018] In the figure: 1. Dam body; 2. Embedded channel; 3. Base; 4. Upper observation pier; 5. Forced centering plate; 6. Cover assembly; 61. Metal sleeve; 62. Hexagonal tube with holes; 63. Inter-tube hole; 7. Guard plate assembly; 71. Laminating plate; 72. Groove; 73. Vertical plate; 74. Tile; 75. Positioning cone; 8. Splicing pipe assembly; 81. Threaded plug; 82. Jack; 83, first splicing piece; 831, first splicing tube component; 832, first thread groove; 833, sliding limit groove; 834, snap-fit ​​groove; 84, second splicing piece; 841, second splicing tube component; 842, second thread groove; 843, snap-fit ​​strip; 844, round hole; 85. Sliding assembly; 851. Inner tube; 852. Plastic strip; 853. Floating block; 854. Strip hole; 855. Limiting sliding strip; 9. Position the support block. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0020] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0021] Unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See also Figure 1-15 A high-stability observation pier for dam deformation monitoring includes a dam body 1, an embedded groove 2, a base 3, an upper observation pier 4 and a forced centering plate 5. A splicing pipe assembly 8 is embedded and installed on the inner side of the base 3. The splicing pipe assembly 8 includes a threaded plug 81, an insertion hole 82 is opened on the upper end of the threaded plug 81, a first splicing piece 83 is attached to the side of the threaded plug 81, a second splicing piece 84 is attached to the side of the threaded plug 81, and a sliding assembly 85 is slidably connected to the lower end of the first splicing piece 83. The first splicing piece 83 includes a first splicing pipe component 831, and a first threaded groove 832 is opened on the side of the first splicing pipe component 83 close to the threaded plug 81. A sliding limit groove 833 is provided at the bottom end, a clamping groove 834 is provided on the left and right sides of the first splicing tube component 831, and the second splicing piece 84 includes a second splicing tube component 841. A second threaded groove 842 is provided on the side of the second splicing tube component 841 close to the threaded plug 81. Clamping strips 843 are fixedly connected to the left and right sides of the second splicing tube component 841. A circular hole 844 is provided in the second splicing tube component 841. The sliding assembly 85 includes an inner tube 851. A plastic strip 852 is fixedly connected to the inner side of the upper end of the inner tube 851. A floating block 853 is fixedly connected to the end of the second threaded groove 842 away from the inner tube 851. A strip hole 854 is provided in the inner tube 851. The outer side of the inner tube 851 is fixedly connected to the limited sliding bar 855, and a pre-buried groove 2 is opened on the inclined surface of the dam body 1. A base 3 is set in the pre-buried groove 2. The upper end of the base 3 is fixedly connected to the upper observation pier 4, and the upper end of the upper observation pier 4 is fixedly connected to the forced centering plate 5. A cover assembly 6 is provided on the outer side of the upper observation pier 4. A positioning support block 9 is fixedly connected to one side of the base 3. The side of the positioning support block 9 away from the base 3 is clamped with a guard plate assembly 7. The base 3 is embedded in the pre-buried groove 2 on the inclined surface of the dam body 1 and is tightly combined with the dam body 1. At the same time, structures such as the positioning support block 9 are provided to provide a solid foundation for the upper observation pier 4 and enhance the upper observation pier 4. The overall stability and anti-overturning ability enable it to better resist the influence of external factors such as water impact and wind, ensuring that it always maintains a stable state during the dam monitoring process, providing reliable guarantee for obtaining accurate deformation monitoring data. The setting of the cover assembly 6 reduces the direct scouring and erosion of the concrete surface outside the upper observation pier 4 by natural factors such as rain, wind and sand, and ultraviolet rays, thereby extending the service life of the upper observation pier 4. The guard plate assembly 7 can protect the base 3 and prevent the surface of the base 3 from cracking or powdering. At the same time, it is more labor-saving during disassembly and will not cause excessive damage to the dam body 1, which is conducive to the repair of the dam body 1.

[0024] See also Figures 1-4In this embodiment, the bottom end of the base 3 is fixedly connected to the dam body 1, the guard plate assembly 7 is arranged in the gap between the base 3 and the embedded groove 2, the upper end surface of the upper observation pier 4 and the upper end surface of the cover assembly 6 are on the same horizontal plane, the positioning support block 9 is horizontally projected into a right-angled trapezoid, a portion of the base 3 is exposed at the upper end of the embedded groove 2, the upper end area of ​​the upper observation pier 4 is four-fifths of the bottom end area, the cross-section of the upper observation pier 4 is a regular hexagon, and a plurality of splicing pipe assemblies 8 are provided, and the plurality of splicing pipe assemblies 8 are distributed below the upper observation pier 4 in the form of a rectangular array.

[0025] Specifically, the structural design of the upper observation pier 4 can lower the center of gravity and disperse the lateral load. The design that the upper end surface of the upper observation pier 4 and the upper end surface of the cover assembly 6 are on the same horizontal plane can prevent the cover assembly 6 from blocking the monitoring instruments placed on the upper observation pier 4. The guard plate assembly 7 is connected with the positioning support block 9. On the one hand, it isolates the base 3 and the side wall of the embedded groove 2. On the other hand, the structural design of the positioning support block 9 stabilizes the guard plate assembly 7 while facilitating the removal of the guard plate assembly 7 from the embedded groove 2.

[0026] See also Figure 4 and Figure 5 In this embodiment, the cover assembly 6 includes a metal sleeve 61, a hexagonal tube 62 with a hole is welded and fixed to the bottom end of the metal sleeve 61, and an inter-tube hole 63 is opened in the hexagonal tube 62 with a hole. The inner side of the metal sleeve 61 is tightly attached to the outer side of the upper observation pier 4, and there is a gap between the inner side of the hexagonal tube 62 with a hole and the outer side of the upper observation pier 4. The hexagonal tube 62 with a hole is fixed to the upper end of the base 3 by an expansion bolt.

[0027] Specifically, the metal sleeve 61 is tightly attached to the outer side of the upper observation pier 4, forming a rigid protection for the upper observation pier 4, so that it can better resist impact or corrosion. The design of retaining a gap between the perforated hexagonal tube 62 and the upper observation pier 4 and opening an inter-tube hole 63 allows the upper observation pier 4 to produce temperature deformation and release internal stress. The perforated hexagonal tube 62 is fixed to the upper end of the base 3 by expansion bolts, which can transfer wind loads to the base 3 and avoid stress concentration at the root of the upper observation pier 4.

[0028] See also Figure 2 、 Figure 3 、 Figure 7 as well as Figure 8 In this embodiment, the guard plate assembly 7 includes a bonding plate 71, a groove 72 is provided on the side of the bonding plate 71 close to the base 3, a vertical plate 73 is fixedly connected to the side of the bonding plate 71 away from the base 3, a tile 74 is fixedly connected to the side of the vertical plate 73 close to the bonding plate 71, a positioning cone 75 is fixedly connected to the bottom end of the bonding plate 71, the upper end of the vertical plate 73 is an arc-shaped structure, the upper end surface of the tile 74 is an arc-shaped setting, the bottom end of the tile 74 is fixedly connected to the bonding plate 71, a plurality of tiles 74 are provided, and the multiple tiles 74 are parallel to each other.

[0029] Specifically, the setting of the positioning cone 75 makes the pre-installation of the guard plate assembly 7 more accurate, and the arc-shaped structure at the upper end of the vertical plate 73 allows the crowbar to be more accurately inserted into the tile 74 set between the bonding plate 71 and the vertical plate 73. After the tile 74 is crushed, the space between the bonding plate 71 and the vertical plate 73 can be expanded. At the same time, the crowbar can use the arc-shaped structure at the upper end of the vertical plate 73 as a fulcrum to easily pry the filler between the bonding plate 71 and the vertical plate 73, thereby facilitating the subsequent removal of the guard plate assembly 7.

[0030] See also Figure 4 as well as Figures 9-15 In this embodiment, the upper end surface of the threaded plug 81 and the upper end surface of the base 3 are on the same horizontal plane, the depth of the insertion hole 82 is half the height of the threaded plug 81, the first splicing piece 83 and the second splicing piece 84 are staggered and spliced ​​with each other, the sliding component 85 is directly below the threaded plug 81, the first thread groove 832 is adapted to the thread set on the side of the threaded plug 81, the height of the sliding limit groove 833 is half the height of the sliding component 85, the groove edge of the clamping groove 834 close to the sliding component 85 is arc-shaped, the second thread groove 842 is adapted to the thread set on the side of the threaded plug 81 To match, the thickness of the snap-in strip 843 is one-third of the second splicing tube component 841, the snap-in strip 843 is matched with the snap-in groove 834, the circular hole 844 is arranged above the strip hole 854, the outer side of the inner tube 851 is tightly attached to the first splicing tube component 831 and the second splicing tube component 841 at the same time, the length of the plastic strip 852 is one-quarter of the inner diameter of the inner tube 851, and a number of through holes are opened on the inside of the floating block 853. The number of strip holes 854 is the same as the number of circular holes 844, and the limiting sliding strip 855 is slidably connected to the inside of the sliding limiting groove 833.

[0031] Specifically, the design that the upper end surface of the threaded plug 81 and the upper end surface of the base 3 are on the same horizontal plane can ensure the flatness and aesthetics of the upper end surface of the base 3, and at the same time prevent the operator from bumping against the upper end surface of the base 3. The depth of the socket 82 is half of the height of the threaded plug 81. This design ensures that the depth of the socket 82 is sufficient to accommodate the corresponding plug rod, and avoids the rod from being inserted too deep and affecting the stability of the splicing tube assembly 8. The first splicing piece 83 and the second splicing piece 84 are staggered with each other. This splicing method makes the splicing installation of the splicing tube assembly 8 not unstable. The design of the sliding limit groove 833 having a height of half the height of the sliding assembly 85 ensures that the limit sliding bar 855 has sufficient sliding space and prevents it from sliding excessively. The circular hole 844 is arranged above the bar hole 854 so that when the bar hole 854 is not aligned with the circular hole 844, the fluid in the inner tube 851 cannot pass through the bar hole 854 into the circular hole 844. The structural design of the plastic strip 852 and the float 853 allows the fluid above the inner tube 851 to enter the inner tube 851, and can also make the float 853 float up to drive the inner tube 851 to rise.

[0032] Workflow: S1: Casting of base 3: First, a pre-buried groove 2 is opened on the inclined surface of the dam. Then, the steel bars are tied according to the casting shape of the base 3. Multiple guard plate assemblies 7 are placed in the pre-buried groove 2 so that the bottom surface of the tile 74 is in contact with the inner bottom end of the pre-buried groove 2. The positioning cone 75 fixed at the bottom end of the tile 74 is inserted into the dam body 1, and one side of the vertical plate 73 is in contact with the dam body 1. Then, the positioning support block 9 is installed in the groove 72. Then, after multiple splicing pipe assemblies 8 are placed in the appropriate position, the base 3 is cast and formed, and watering and curing are carried out. The gap between the base 3 and the pre-buried groove 2 is backfilled with earth. S2: Casting of the upper observation pier 4 and installation of the forced centering plate 5 and the cover assembly 6: When the base 3 is formed and reaches a certain strength, its upper end face is cleaned, and the upper observation pier 4 is cast on it. The surface and edges of the upper observation pier 4 are cleaned during casting. When the upper observation pier 4 is cast to the designed position, the forced centering plate 5 is installed to firmly weld the forced centering plate 5 to the internal steel bars of the upper observation pier 4, and ensure that its center position coincides with the center line of the upper observation pier 4. The cover shell assembly 6 is then sleeved on the outside of the upper observation pier 4 to fit the inner side of the metal sleeve 61 with the outer side of the upper observation pier 4, and the hexagonal tube with holes 62 is formed with the base 3 through expansion bolts.

[0033] S3: Structural damage to substrate 3: The rod that matches the shape of the insertion hole 82 is inserted into the insertion hole 82, and the rotation drives the threaded plug 81 to rotate and remove it from between the first splicing piece 83 and the second splicing piece 84. Then, an expansion agent is added to the columnar space formed by the first splicing piece 83 and the second splicing piece 84, and then an appropriate amount of water is poured in to make the float 853 float and drive the inner tube 851 upward through the plastic strip 852, so that the strip hole 854 is aligned with the circular hole 844. After a period of time, the expansion agent and water fully react and expand. Part of the expansion agent and water mixture generates a driving force on the first splicing pipe component 831 and the first thread groove 832 on the side facing the sliding assembly 85, and part of it passes through the strip hole 854 and then penetrates through the circular hole 844 opened in the second splicing pipe component 841 into the space between the second splicing pipe component 841 and the base 3, generating a force on the second splicing pipe component 841, separating the second splicing pipe component 841 and the second thread groove 842, and destroying the structure of the base 3. S4: Structural damage to guard plate assembly 7: Use a crowbar to hit downwards, the crowbar passes through the filler in the gap between the base 3 and the embedded groove 2 and breaks the tile 74, expanding the space between the vertical plate 73 and the bonding plate 71, and digging the guard plate assembly 7 together with the filler in the gap between the base 3 and the embedded groove 2 out of the embedded groove 2; S5: Demolition of base 3 and restoration of dam body 1: The damaged base 3 is dismantled, the garbage in the embedded groove 2 is cleaned, and then the dam body 1 is reinforced by concrete pouring, anti-seepage treatment and other operations.

[0034] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A high-stability observation pier for dam deformation monitoring, comprising a dam body (1), an embedded groove (2), a base (3), an upper observation pier (4) and a forced centering plate (5), characterized in that: A splicing tube assembly (8) is embedded and installed inside the base (3), and the splicing tube assembly (8) includes a threaded plug (81), an insertion hole (82) is provided at the upper end of the threaded plug (81), a first splicing piece (83) is attached to the side of the threaded plug (81), a second splicing piece (84) is attached to the side of the threaded plug (81), and a sliding assembly (85) is slidably connected to the lower end of the first splicing piece (83); The first splicing piece (83) comprises a first splicing tube component (831), a first thread groove (832) is provided on a side of the first splicing tube component (831) close to the threaded plug (81), a sliding limit groove (833) is provided at the bottom end of the first splicing tube component (831), and clamping grooves (834) are provided on the left and right sides of the first splicing tube component (831); The second splicing piece (84) comprises a second splicing tube component (841), a second thread groove (842) is provided on a side of the second splicing tube component (841) close to the threaded plug (81), a clamping strip (843) is fixedly connected to the left and right sides of the second splicing tube component (841), and a circular hole (844) is provided in the second splicing tube component (841); The sliding assembly (85) comprises an inner tube (851), a plastic strip (852) is fixedly connected to the inner side of the upper end of the inner tube (851), a floating block (853) is fixedly connected to the end of the second thread groove (842) away from the inner tube (851), a strip hole (854) is opened in the inner tube (851), and a limited sliding strip (855) is fixedly connected to the outer side of the inner tube (851).

2. The high-stability observation pier for dam deformation monitoring according to claim 1, characterized in that: An embedded groove (2) is provided on the inclined surface of the dam body (1), a base (3) is provided in the embedded groove (2), an upper observation pier (4) is fixedly connected to the upper end of the base (3), a forced centering plate (5) is fixedly connected to the upper end of the upper observation pier (4), a cover assembly (6) is sleeved on the outer side of the upper observation pier (4), a positioning support block (9) is fixedly connected to one side of the base (3), and a guard plate assembly (7) is clamped on the side of the positioning support block (9) away from the base (3).

3. The high-stability observation pier for dam deformation monitoring according to claim 2, characterized in that: The bottom end of the base (3) is fixedly connected to the dam body (1), the guard plate assembly (7) is arranged in the gap between the base (3) and the embedded groove (2), the upper end surface of the upper observation pier (4) and the upper end surface of the cover assembly (6) are on the same horizontal plane, the lateral projection of the positioning support block (9) is a right-angled trapezoid, a part of the base (3) is exposed at the upper end of the embedded groove (2), the upper end area of ​​the upper observation pier (4) is four-fifths of the bottom end area, the cross section of the upper observation pier (4) is a regular hexagon, and a plurality of the splicing pipe assemblies (8) are provided, and the plurality of splicing pipe assemblies (8) are distributed in the form of a rectangular array below the upper observation pier (4).

4. The high-stability observation pier for dam deformation monitoring according to claim 2, characterized in that: The cover assembly (6) includes a metal sleeve (61), a hexagonal tube with a hole (62) is welded and fixed to the bottom end of the metal sleeve (61), an inter-tube hole (63) is opened in the hexagonal tube with a hole (62), the inner side of the metal sleeve (61) is in close contact with the outer side of the upper observation pier (4), and a gap exists between the inner side of the hexagonal tube with a hole (62) and the outer side of the upper observation pier (4), and the hexagonal tube with a hole (62) is fixed to the upper end of the base (3) by an expansion bolt.

5. The high-stability observation pier for dam deformation monitoring according to claim 2, characterized in that: The guard plate assembly (7) comprises a bonding plate (71), a groove (72) is provided on a side of the bonding plate (71) close to the base (3), a vertical plate (73) is fixedly connected to a side of the bonding plate (71) away from the base (3), a tile (74) is fixedly connected to a side of the vertical plate (73) close to the bonding plate (71), and a positioning cone (75) is fixedly connected to the bottom end of the bonding plate (71).

6. The high-stability observation pier for dam deformation monitoring according to claim 5, characterized in that: The upper end of the vertical plate (73) is an arc-shaped structure, the upper end surface of the tile (74) is arranged in an arc shape, the bottom end of the tile (74) is fixedly connected to the bonding plate (71), and a plurality of tiles (74) are provided, and the plurality of tiles (74) are parallel to each other.

7. The high-stability observation pier for dam deformation monitoring according to claim 1, characterized in that: The upper end surface of the threaded plug (81) and the upper end surface of the base (3) are on the same horizontal plane, the depth of the insertion hole (82) is half the height of the threaded plug (81), the first splicing piece (83) and the second splicing piece (84) are staggered and spliced ​​with each other, and the sliding assembly (85) is located directly below the threaded plug (81).

8. The high-stability observation pier for dam deformation monitoring according to claim 1, characterized in that: The first thread groove (832) is adapted to the thread provided on the side of the threaded plug (81), the height of the sliding limit groove (833) is half the height of the sliding assembly (85), and the groove edge of the engaging groove (834) close to the sliding assembly (85) is arc-shaped.

9. The high-stability observation pier for dam deformation monitoring according to claim 1, characterized in that: The second thread groove (842) is adapted to the thread provided on the side of the threaded plug (81); the thickness of the clamping strip (843) is one-third of the thickness of the second splicing tube component (841); the clamping strip (843) is adapted to the clamping groove (834); and the circular hole (844) is provided above the strip hole (854).

10. The high-stability observation pier for dam deformation monitoring according to claim 1, characterized in that: The outer side of the inner tube (851) is in close contact with both the first splicing tube component (831) and the second splicing tube component (841). The length of the plastic strip (852) is one-fourth of the inner diameter of the inner tube (851). A plurality of through holes are provided on the inner side of the floating block (853). The number of the strip holes (854) is the same as the number of the circular holes (844). The limiting sliding strip (855) is slidably connected to the inner side of the sliding limiting groove (833).

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