Mounting structure for installing a flexible inclinometer in a rockfill dam

Abstract

The utility model discloses a kind of installation structure of installing flexible inclinometer in rock-fill dam, belong to geotechnical engineering and dam safety monitoring technical field, including mounting plate, fixedly connected on rock-fill dam foundation, fixed ring and mutually perpendicular first guide round pipe and second guide round pipe are fixedly connected on mounting plate, first guide round pipe axial direction is consistent with water flow direction, fixed ring is located on the intersection of two first guide round pipe and second guide round pipe axis extension line;Flexible inclinometer is equipped with two groups, one group is through first guide round pipe and is fixedly connected with fixed ring;Another group is through second guide round pipe, and the end far from fixed ring is anchored on a fixed point by anchoring component.The utility model realizes multi-directional inclinometer synchronous settlement and accurate docking, eliminates benchmark failure, strengthens equipment protection, guarantees that monitoring data is accurate and reliable, adapts rock-fill dam complex construction and operating environment.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering and dam safety monitoring technology, and particularly relates to an installation structure for installing a flexible inclinometer in a rockfill dam. Background Technology

[0002] Rockfill dams, with their advantages of structural stability, strong adaptability, and convenient construction, have become one of the most widely used dam types in water conservancy and hydropower projects. Their operational safety is directly related to the safety of life and property and the stability of the ecological environment in downstream areas. Therefore, long-term and accurate monitoring of physical quantities such as settlement and displacement inside rockfill dams is a core means of assessing dam stability and predicting potential risks, and a key link in ensuring the safe operation of the dam throughout its entire life cycle.

[0003] With the intelligent and digital development of water conservancy projects, traditional monitoring equipment has gradually revealed significant limitations: on the one hand, traditional equipment struggles to achieve long-term reliable measurements in underwater monitoring areas, and is prone to data drift and frequent malfunctions in complex hydrological environments; on the other hand, its compatibility with modern automated monitoring systems and digital twin platforms is insufficient, failing to meet the engineering requirements of real-time data transmission and remote analysis and decision-making. Against this backdrop, flexible inclinometers, due to their outstanding advantages such as automated reading, integrated structural design, high water pressure resistance, and ease of access to cloud platforms, have been widely used in settlement monitoring of rockfill dams, especially underwater sections, providing more efficient and intelligent technical support for dam safety monitoring.

[0004] However, the construction and operation environment of rockfill dams is extremely complex. During dam construction, there is impact and compression from the backfilled stones; during operation, there are large deformations of the dam body and corrosion from humid, multi-media conditions. This presents several technical challenges for the installation of flexible inclinometers: First, insufficient reliability of the anchorage. If the starting point (base point) of the flexible inclinometer lacks a stable anchorage structure, it is prone to loosening and displacement during backfilling or dam deformation, leading to the failure of the benchmark for the entire monitoring sequence and rendering all measurement data meaningless. Second, poor coordinated deformation capacity at overlapping joints. When the monitoring lines need to be arranged in complex spatial configurations such as "L" shapes, the lack of dedicated connecting devices at the intersections of multiple flexible inclinometers makes it difficult to achieve rigid fixation and synchronous settlement, resulting in unreliable connection and conversion of monitoring data from different directions, creating monitoring blind spots. Third, insufficient protection for sensors and cables. The sharp edges of the backfill stones in the rockfill dam can easily damage, puncture, or cut the sensor section and connecting cables of the flexible inclinometer during construction. At the same time, the humid environment can cause the cables to become damp and the sensors to corrode, leading to permanent damage to the instrument and seriously affecting the continuity and long-term stability of monitoring.

[0005] The aforementioned technical deficiencies in the installation process severely restrict the accuracy and reliability of the flexible inclinometer's monitoring data, thereby affecting the accurate assessment of the dam's safety status and preventing the full realization of its intelligent monitoring advantages. Therefore, developing a dedicated installation structure for flexible inclinometers that adapts to the complex working conditions of rockfill dams and can systematically solve problems related to anchoring, overlapping, and protection has become an urgent need to promote the upgrading of rockfill dam safety monitoring technology and ensure the safe operation of dams. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes an installation structure for installing a flexible inclinometer in a rockfill dam.

[0007] To achieve the above objectives, this utility model provides an installation structure for mounting a flexible inclinometer in a rockfill dam, comprising:

[0008] An installation plate is fixedly attached to the foundation of the rockfill dam. A fixing ring and a first guide pipe and a second guide pipe that are perpendicular to each other are fixedly attached to the installation plate. The axis of the first guide pipe is aligned with the direction of water flow. The fixing ring is located at the intersection of the extended axes of the first guide pipe and the second guide pipe.

[0009] The flexible inclinometer has two sets: one set passes through the first guide tube and is fixedly connected to the fixed ring; the other set passes through the second guide tube, and its end away from the fixed ring is anchored to a fixed point by an anchoring assembly.

[0010] Optionally, a number of steel bars are vertically fixed to the bottom surface of the mounting plate.

[0011] Optionally, the anchoring assembly includes an anchoring plate fixed to a stationary point, and the end of the flexible inclinometer perpendicular to the water flow direction away from the fixed ring is hinged to the anchoring plate.

[0012] Optionally, the flexible inclinometer is wrapped with a protective tube, which includes a PE pipe and a high-pressure rubber hose; the PE pipe is used to cover the sensor section of the flexible inclinometer, and the high-pressure rubber hose is used to cover the cable section of the flexible inclinometer.

[0013] Optionally, the PE pipes are sealed together with each other, the PE pipes are sealed together with the high-pressure rubber hoses, and the high-pressure rubber hoses are sealed together with each other.

[0014] Optionally, the connector is fastened to the PE pipe and to the high-pressure rubber hose with cable ties and sealed with sealing tape.

[0015] Optionally, both the first guide tube and the second guide tube are seamless steel pipes.

[0016] Optionally, the sensor measuring points at the docking ends of the two flexible inclinometers are fixedly connected to the mounting plate by a fixing mechanism.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] The mounting plate is fixed to the rockfill dam foundation, providing a stable load-bearing foundation for the overall structure. The first and second guide tubes, perpendicular to each other, form a precise positioning and connection system with the fixing ring. The arrangement of the first guide tube, aligned with the water flow direction, adapts to the spatial requirements of rockfill dam monitoring scenarios. Two sets of flexible inclinometers pass through the corresponding first and second guide tubes and are connected via the fixing ring, forming a rigidly connected synchronous settlement unit at the intersection measurement points. This completely solves the problem of data incompatibility and conversion caused by asynchronous deformation in traditional overlapping methods, ensuring the connectivity and consistency of multi-directional monitoring data. The system integrates the functions of fixing, guiding, and connecting, making it adaptable to the complex construction environment of rockfill dams. This provides structural support for the long-term stable operation of the flexible inclinometer, thereby ensuring the accuracy and reliability of the monitoring data and providing a solid data foundation for dam safety assessment. The first and second guide tubes provide precise guidance for the flexible inclinometer while effectively preventing the instrument from being scratched by sharp objects. In conjunction with the design of another set of flexible inclinometers anchored at the far end through anchoring components, the system not only eliminates the problem of monitoring benchmark failure caused by base point displacement, but also standardizes and protects the instrument installation path. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the installation structure of the flexible inclinometer in a rockfill dam according to this utility model.

[0021] Figure 2 Top view of the installation structure of the flexible inclinometer in a rockfill dam according to this utility model;

[0022] Figure 3 This is a schematic diagram of the flexible inclinometer anchored at a fixed point in this utility model.

[0023] Figure 4 This is a schematic diagram of the protective tube structure in this utility model.

[0024] In the diagram: 1. Mounting plate; 2. Fixing ring; 3. First guide tube; 4. Second guide tube; 5. Flexible inclinometer; 6. Anchor plate; 7. Reinforcing bar; 8. Protective tube; 9. Joint. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1 to 4 As shown, this embodiment provides an installation structure for mounting a flexible inclinometer in a rockfill dam, including:

[0028] Mounting plate 1 is fixed to the rockfill dam foundation. Mounting plate 1 is fixed with a fixing ring 2 and a first guide pipe 3 and a second guide pipe 4 that are perpendicular to each other. The axis of the first guide pipe 3 is in the same direction as the water flow. The fixing ring 2 is located at the intersection of the extended lines of the axes of the first guide pipe 3 and the second guide pipe 4.

[0029] The flexible inclinometer 5 has two sets. One set passes through the first guide tube 3 and is fixed to the fixed ring 2. The other set passes through the second guide tube 4, and its end away from the fixed ring 2 is anchored to a fixed point through an anchoring assembly.

[0030] The fixed point of the anchoring component can be a fixed point such as the dam foundation or slope.

[0031] Mounting plate 1 is fixed to the rockfill dam foundation, providing a stable load-bearing foundation for the overall structure. The first guide pipe 3 and the second guide pipe 4, perpendicular to each other, form a precise positioning and connection system with the fixing ring 2. The arrangement of the first guide pipe 3, aligned with the water flow direction, adapts to the spatial requirements of the rockfill dam monitoring scenario. Two sets of flexible inclinometers 5 pass through the corresponding first guide pipe 3 and second guide pipe 4, respectively, and are connected via the fixing ring 2, forming a rigidly connected synchronous settlement unit at the intersection measurement points. This completely solves the problem of data incompatibility and conversion caused by asynchronous deformation in traditional overlapping methods, ensuring the connectivity of multi-directional monitoring data. With systematic design, the first guide tube 3 and the second guide tube 4 provide precise guidance for the flexible inclinometer 5 while effectively preventing the instrument from being scratched by sharp objects. Combined with the design of another set of flexible inclinometers 5 anchored at a fixed point via anchoring components, this not only eliminates the problem of monitoring benchmark failure caused by base point displacement but also standardizes and protects the instrument installation path. The overall structure integrates fixing, guiding, and connecting functions, adapting to the complex construction environment of rockfill dams and providing structural support for the long-term stable operation of the flexible inclinometer 5. This ensures the accuracy and reliability of monitoring data and provides a solid data foundation for dam safety assessment.

[0032] In some alternative implementations, a number of steel bars 7 are vertically fixed to the bottom surface of the mounting plate 1.

[0033] The steel bars 7 are embedded in the dam structure to form a three-dimensional stress support, which greatly improves the tensile and shear resistance and overall stability of the mounting plate 1. The vertically distributed steel bars 7 can evenly disperse the stress transmitted from the dam to the mounting plate 1, reduce the risk of deformation of the mounting plate 1 itself, and ensure that the installation position accuracy of the fixing ring 2 and the first guide tube 3 and the second guide tube 4 on it is not affected. This provides a solid structural support for the precise docking and synchronous settlement of the two sets of flexible inclinometers 5, further ensuring the continuity and reliability of monitoring data, and meeting the needs of long-term stable monitoring under the complex working conditions of rockfill dams.

[0034] In some alternative implementations, the anchoring assembly includes an anchor plate 6 fixed to a stationary point, and a flexible inclinometer 5 perpendicular to the direction of water flow is hinged at one end away from the fixed ring 2 to the anchor plate 6.

[0035] By connecting the anchor plate 6, which is fixed to the stationary point, to the end of the second flexible inclinometer 5 furthest from the fixed ring 2 using a hinged connection, the stable fixing characteristics of the anchor plate 6 provide a reliable reference anchor point for the inclinometer. This fundamentally avoids the problem of monitoring data reference failure caused by loosening or displacement of the reference point in traditional anchoring methods, ensuring the accuracy of the monitoring sequence. Furthermore, the rotational freedom of the hinged structure is adapted to the settlement and deformation conditions during the operation of the rockfill dam, preventing the stress generated by dam deformation from being directly transmitted to the inclinometer body. This effectively prevents the instrument from being damaged by tension due to rigid constraints, while not affecting the normal monitoring of dam displacement by the inclinometer. This further improves the long-term stability and service life of the equipment under complex working conditions, ensuring the continuity and reliability of monitoring data.

[0036] In some alternative implementations, the flexible inclinometer 5 is encased in a protective tube 8, which includes a PE pipe and a high-pressure rubber hose; the PE pipe is used to cover the sensor section of the flexible inclinometer 5, and the high-pressure rubber hose is used to cover the cable section of the flexible inclinometer 5.

[0037] The PE pipe covering the sensor section, with its excellent flexibility and corrosion resistance, can adapt to the deformation of the rockfill dam during operation, preventing sensor damage due to rigid constraints. It can also resist corrosion from moisture and chemical media inside the dam, ensuring the stable operation of this core monitoring component. The high-pressure rubber hose covering the cable section combines flexibility and high compressive strength, effectively resisting punctures from sharp rocks and compression and impacts from backfill materials during the construction and operation of the rockfill dam, preventing cables from being damaged or cut. It also adapts to the cable layout requirements and dam deformation conditions. Structurally, it systematically solves the problems of insufficient targeting and easy damage to instruments caused by traditional protective measures, significantly improving the overall resistance to harsh environments of the flexible inclinometer 5, ensuring the long-term stable operation of the monitoring equipment, and providing a solid guarantee for the continuity and reliability of monitoring data.

[0038] In some alternative implementations, PE pipes are sealed together with each other, PE pipes are sealed together with high-pressure rubber hoses, and high-pressure rubber hoses are sealed together with each other via joints 9.

[0039] The connector has a precise and sealed connection for different types of protective pipes, which solves the problem of connection gap caused by the difference in pipe specifications. It ensures that the protective link is uninterrupted and effectively resists the impact, compression and tensile force caused by dam deformation during the construction of rockfill dam, and avoids the displacement or detachment of the protective pipe.

[0040] In some alternative implementations, the connector 9 is secured to the PE pipe and to the high-pressure rubber hose with cable ties and sealed with sealing tape.

[0041] The mechanical fastening effect of the cable ties strengthens the connection between joint 9 and the pipe, preventing loosening due to vibration and deformation during long-term operation. Simultaneously, the additional sealing treatment with the sealing tape completely blocks impurities such as moisture, sediment, and chemical media from entering the protective pipe, preventing damage to sensors or cables due to dampness and corrosion. This structurally eliminates the hidden danger of the traditional weak point in protection—the connection point. The combined effect of these two elements creates a comprehensive, seamless protection system, significantly enhancing the resilience of the flexible inclinometer 5 in complex and harsh dam environments. This ensures long-term stable operation of the equipment and provides crucial support for the continuity and accuracy of monitoring data, meeting the stringent requirements of long-term safety monitoring of rockfill dams.

[0042] In some alternative implementations, both the first guide tube 3 and the second guide tube 4 are seamless steel pipes.

[0043] Seamless steel pipes, with their seamless overall structure, eliminate the weak points at the joints of traditional welded steel pipes. Combined with their excellent strength and rigidity, they can effectively resist the squeezing and impact of backfill materials and the collision and scraping of sharp gravel during the construction of rockfill dams. This prevents the first guide pipe 3 and the second guide pipe 4 from deforming, breaking or being punctured, providing a stable and reliable guiding channel for the flexible inclinometer 5. This indirectly ensures the continuity and accuracy of monitoring data and meets the stringent requirements of long-term safety monitoring of rockfill dams.

[0044] In some alternative implementations, the sensor measuring points at the docking ends of the two flexible inclinometers 5 are fixedly connected to the mounting plate 1 by a fixing mechanism.

[0045] The fixing mechanism can employ any one or more combinations of fixing rings, clamping clamps, or clamps with locking screws to reliably hold the outer tube of the flexible inclinometer 5. By directly fixing the measuring points of the two key sensors to the stable bearing foundation of the mounting plate 1 through the fixing mechanism, it is possible to forcibly ensure that the measuring points at the docking ends of the two inclinometers are always in the same spatial position, completely eliminating problems such as relative displacement and misalignment that may occur in traditional overlapping methods, achieving absolutely synchronous settlement, and providing the most direct structural guarantee for the accurate correlation, conversion, and fusion of monitoring data from the two sets of inclinometers.

[0046] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0047] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An installation structure for mounting a flexible inclinometer in a rockfill dam, characterized in that, include: Mounting plate (1) is fixed to the foundation of rockfill dam. Mounting plate (1) is fixed with fixing ring (2) and a first guide pipe (3) and a second guide pipe (4) that are perpendicular to each other. The axis of the first guide pipe (3) is in the same direction as the water flow. The fixing ring (2) is located at the intersection of the extended lines of the axes of the first guide pipe (3) and the second guide pipe (4). The flexible inclinometer (5) has two sets. One set passes through the first guide tube (3) and is fixed to the fixed ring (2); the other set passes through the second guide tube (4) and is anchored to a fixed point by an anchoring assembly at one end away from the fixed ring (2).

2. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 1, characterized in that, The mounting plate (1) has several steel bars (7) vertically fixed to its bottom surface.

3. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 1, characterized in that, The anchoring assembly includes an anchoring plate (6), which is fixed to a stationary point. The flexible inclinometer (5), which is perpendicular to the direction of water flow, is hinged to the anchoring plate (6) at one end away from the fixed ring (2).

4. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 1, characterized in that, The flexible inclinometer (5) is wrapped with a protective tube (8), which includes a PE pipe and a high-pressure rubber hose. The PE pipe is used to cover the sensor section of the flexible inclinometer (5), and the high-pressure rubber hose is used to cover the cable section of the flexible inclinometer (5).

5. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 4, characterized in that, The PE pipes are sealed together by connectors (9), as are the PE pipes and the high-pressure rubber hoses.

6. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 5, characterized in that, The connector (9) is fastened to the PE pipe and to the high-pressure rubber hose by cable ties and sealed with sealing tape.

7. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 1, characterized in that, Both the first guide tube (3) and the second guide tube (4) are seamless steel pipes.

8. The installation structure for installing a flexible inclinometer in a rockfill dam according to claim 1, characterized in that, The sensor measuring points at the docking ends of the two flexible inclinometers (5) are fixedly connected to the mounting plate (1) by a fixing mechanism.

Images