Reservoir dam settlement observation device

Abstract

The present application relates to dam safety monitoring technical field, disclose a kind of reservoir dam settlement observation device, including base, the top of the base is provided with leveling mechanism, the top of the leveling mechanism is provided with support deck, one end of the support deck is provided with observation instrument, the leveling mechanism includes support, the bottom of the support is fixedly connected at the top of base, the top of support is provided with universal joint, the top node of universal joint is connected with support deck bottom, the outside of support is fixedly connected with partition, the inner wall of partition is provided with buffer, the top of partition is fixedly connected with locking piece, the buffer includes multiple transmission rods, the outside of transmission rod is slidably connected in the inner wall of partition.In the present application, the stability of leveling process and use process is achieved, thereby providing stable horizontal support deck foundation for observation device under the premise of different inclination and flatness installation surface, improving observation accuracy.

Description

Technical Field

[0001] This invention relates to the field of dam safety monitoring technology, and in particular to a reservoir dam settlement observation device. Background Technology

[0002] As an important water conservancy facility, the structural stability of dams directly affects the safety of the surrounding area. To monitor dam settlement in real time, it is usually necessary to deploy observation devices on or around the dam body and collect data using high-precision sensors.

[0003] In the safety monitoring system of reservoir dams, settlement observation is a crucial link in ensuring the safe operation of the dam. Accurate settlement data is of great significance for assessing dam stability and guiding maintenance decisions. Currently, commercially available reservoir dam settlement observation devices have significant shortcomings in leveling and stability control. Existing devices mostly use a basic support frame with simple leveling components. When facing an inclined installation position on the dam surface, the leveling operation lacks a buffer mechanism, resulting in large impact vibrations and difficulty in ensuring accuracy. Furthermore, after leveling, the support platform is prone to tilting due to external wind forces, human contact, and other factors, which the existing structure cannot effectively handle, leading to a significant decrease in observation accuracy.

[0004] Therefore, in response to the above problems, a reservoir dam settlement monitoring device is proposed to solve these problems. Summary of the Invention

[0005] To overcome the above shortcomings, the present invention provides a reservoir dam settlement monitoring device, which aims to improve the shortcomings of some existing devices in terms of leveling and stability control.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A reservoir dam settlement monitoring device includes a base, a leveling mechanism on the top of the base, a support platform on the top of the leveling mechanism, and an observation instrument at one end of the support platform.

[0008] The leveling mechanism includes a bracket, the bottom of which is fixedly connected to the top of the base. A universal joint is provided on the top of the bracket, and the top node of the universal joint is connected to the bottom of the support platform. A partition is fixedly connected to the outside of the bracket, a buffer is provided on the inner wall of the partition, and a locking element is fixedly connected to the top of the partition.

[0009] The buffer includes multiple transmission rods. The outer side of each transmission rod is slidably connected to the inner wall of the partition. An anti-detachment block is fixedly connected to the bottom of the transmission rod. A second spring is fixedly connected between the bottom of the partition and the anti-detachment block, and the second spring is sleeved on the outer side of the transmission rod.

[0010] As a further description of the above technical solution:

[0011] The buffer also includes a slide rod, the two ends of which are fixedly connected to the bottom of the support platform. Two springs are sleeved on the outer side of the slide rod, and a slide column is slidably connected to the outer side of the two slide rods. The outer wall of the slide column is connected to multiple springs, and the outer wall of the slide column is rotatably connected to the top of the transmission rod.

[0012] As a further description of the above technical solution:

[0013] The bottom of the support platform is provided with multiple sliding grooves, and the two ends of the sliding column are slidably connected inside the sliding grooves. The size of the sliding grooves allows the top of the transmission column to rotate.

[0014] As a further description of the above technical solution:

[0015] The locking component includes an inner shrink ring, the bottom of which is fixedly connected to the top of the partition plate. A clamp is fitted on the outer side of the inner shrink ring, and a connecting rod is rotatably connected between the two ends of the opening of the clamp. A threaded post is fixedly connected to one end of the connecting rod, and a locking nut is fitted on the outer side of the threaded post. One side of the locking nut contacts one end of the clamp.

[0016] As a further description of the above technical solution:

[0017] The observation instrument includes multiple support plates, the bottom of which is detachably connected to the top of a support platform. A fixing ring is provided at the other end of the multiple support plates. An electronic chamber is detachably connected to the inner side of the fixing ring. An observation cable is provided at the top of the electronic chamber. A telescopic measuring rod is provided at the bottom of the electronic chamber. A limiting ring is fixedly connected to one end of the support platform. The outer wall of the telescopic measuring rod is slidably connected to the inner side of the limiting ring. A sleeve is detachably connected to the bottom of the limiting ring. A sealing element is fixedly connected to the bottom of the telescopic measuring rod.

[0018] As a further description of the above technical solution:

[0019] The sealing element includes a grounding block, the top of which is fixedly connected to the bottom of the telescopic measuring rod. The grounding block is provided with a sealing ring one and a sealing ring two inside. The grounding block is also provided with a tightening outer ring and a tightening inner ring inside. The two ends of the tightening inner ring are slidably connected to the inside of the tightening outer ring. The inner sides of both the tightening inner ring and the tightening outer ring are in contact with the outer side of the sealing ring two. The outer sides of both the tightening outer ring and the tightening inner ring are rotatably connected with a set screw, which is threaded to the outside of the grounding block.

[0020] As a further description of the above technical solution:

[0021] The sleeve is telescopic, and the bottom of the sleeve is detachably connected between sealing ring one and sealing ring two;

[0022] As a further description of the above technical solution:

[0023] The other ends of the support platform are equipped with counterweights, and the weight of the counterweights is the same as the weight of the observation instrument. The bottom of the base is equipped with multiple ground nails.

[0024] The present invention has the following beneficial effects:

[0025] 1. In this invention, the stability of the leveling process and the usage process is achieved through the cooperation of the universal joint, buffer, and locking components in the leveling mechanism. The universal joint can adjust the support platform to a horizontal position at multiple angles on the inclined surface. During leveling, the support platform rotates and compresses the transmission rod, which drives the sliding column to deform springs one and two, reducing impact vibration and providing preload. After leveling, the locking component tightens the inner ring to fix the support platform. When subjected to external force, the spring preload alleviates the tilting tendency, ensuring that the support platform always remains horizontal, providing a stable foundation for observation and improving observation accuracy.

[0026] 2. In this invention, the telescopic sleeve, sealing ring, and tightening structure in the sealing component work together to achieve full protection during the telescopic measuring rod's extension and retraction. The sleeve extends and retracts synchronously with the telescopic measuring rod's movement. Sealing rings one and two inside the grounding block cooperate, and rotating the set screw causes the tightening outer ring and inner ring to compress sealing ring two, enhancing sealing performance. The sleeve and sealing ring work together to isolate the telescopic measuring rod from external environmental influences, preventing interference from external factors and ensuring the accuracy of the telescopic measuring rod when monitoring dam settlement. This makes the data transmitted by the electronic compartment through the observation cable more reliable, ensuring the accuracy and stability of settlement observation work. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a reservoir dam settlement monitoring device proposed in this invention;

[0028] Figure 2 This is a plan view of a reservoir dam settlement monitoring device proposed in this invention;

[0029] Figure 3 This is a schematic diagram of the leveling mechanism of a reservoir dam settlement monitoring device proposed in this invention;

[0030] Figure 4 This is a schematic diagram of the fastener structure of a reservoir dam settlement monitoring device proposed in this invention;

[0031] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 6 This is a schematic diagram of the structure of the observation instrument for a reservoir dam settlement observation device proposed in this invention;

[0033] Figure 7This is a schematic diagram of the structure of a telescopic measuring rod for a reservoir dam settlement monitoring device proposed in this invention;

[0034] Figure 8 This is a schematic diagram of the sealing component of a reservoir dam settlement monitoring device proposed in this invention;

[0035] Figure 9 This is a schematic diagram of the reinforcement component of a reservoir dam settlement monitoring device proposed in this invention.

[0036] Legend:

[0037] 1. Base; 2. Ground nail; 3. Leveling mechanism; 31. Bracket; 32. Universal joint; 33. Partition; 34. Buffer; 341. Transmission rod; 342. Sliding column; 343. Sliding rod; 344. Spring 1; 345. Slide groove; 346. Anti-detachment block; 347. Spring 2; 35. Locking component; 351. Inner retraction ring; 352. Clamp; 353. Connecting rod; 354. Threaded column; 355. Locking nut; 36. Reinforcing component 361. Threaded rod; 362. Cam; 363. Limiting block; 4. Support platform; 5. Counterweight; 6. Observation instrument; 61. Center limiting ring; 62. Support plate; 63. Fixing ring; 64. Electronic compartment; 65. Observation cable; 66. Telescopic measuring rod; 67. Sleeve; 68. Seal; 681. Grounding block; 682. Sealing ring one; 683. Sealing ring two; 684. Tightening outer ring; 685. Tightening inner ring; 686. Set screw. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1: Refer to Figures 1 to 8 This invention provides an embodiment of a reservoir dam settlement monitoring device, comprising a base 1. Multiple ground-inserting nails 2 are installed at the bottom of the base 1, and these nails are inserted into the ground through sharp structures to fix the position of the base 1 and prevent displacement or shaking of the device during monitoring. A leveling mechanism 3 is installed at the top of the base 1, and a support platform 4 is installed at the top of the leveling mechanism 3. An observation instrument 6 is installed at one end of the support platform 4, and counterweights 5 are installed at the other ends of the support platform 4. The weight of the counterweights 5 is the same as the weight of the observation instrument 6. The counterweights 5 balance the weight on both sides of the support platform 4, counteracting the unilateral gravity of the observation instrument 6 and preventing the platform from tilting.

[0040] The leveling mechanism 3 includes a bracket 31, the bottom of which is fixedly connected to the top of the base 1. A universal joint 32 is provided on the top of the bracket 31, allowing for flexible adjustment of the support platform 4 to a horizontal state at multiple angles to adapt to different inclined bases. The top node of the universal joint 32 is connected to the bottom of the support platform 4. A partition 33 is fixedly connected to the outside of the bracket 31, providing a fixed support base for the buffer assembly and locking element 35. A buffer element 34 is provided on the inner wall of the partition 33, and a locking element 35 is fixedly connected to the top of the partition 33.

[0041] The buffer 34 includes multiple transmission rods 341. The outer side of the transmission rods 341 is slidably connected to the inner wall of the partition 33. The bottom of the transmission rods 341 is fixedly connected to an anti-detachment block 346, which is used to prevent the spring from detaching and to transmit the mechanical changes of the leveling action. A second spring 347 is fixedly connected between the bottom of the partition 33 and the anti-detachment block 346. By compressing or stretching the second spring 347, the impact vibration during the leveling process is buffered, and a reverse preload is provided to maintain stability. The second spring 347 is sleeved on the outer side of the transmission rods 341.

[0042] The buffer 34 also includes a slide rod 343, with both ends of the slide rod 343 fixedly connected to the bottom of the support platform 4. Two springs 344 are sleeved on the outer side of the slide rod 343. The deformation of the springs 344 absorbs the vibration energy of the support platform 4 during leveling and when subjected to external forces, assisting in the smooth adjustment of the support platform 4. The outer sides of the two slide rods 343 are slidably connected to a slide column 342, which converts the rotational motion of the support platform 4 into linear sliding. The slide groove 345 restricts the direction of movement, ensuring accurate transmission of the leveling action. The outer wall of the slide column 342 is connected to multiple springs 344, and the outer wall of the slide column 342 is rotatably connected to the top of the transmission rod 341. Multiple slide grooves 345 are provided at the bottom of the support platform 4 to guide the linear sliding of the slide column 342, limit the range of motion of the transmission rod 341, and ensure that the leveling action is stable and controllable. The two ends of the slide column 342 are slidably connected inside the slide groove 345, and the size of the slide groove 345 allows the top of the transmission column to rotate.

[0043] The locking component 35 includes an inner shrink ring 351, the bottom of which is fixedly connected to the top of the partition plate 33. A clamp 352 is fitted on the outer side of the inner shrink ring 351. By tightening the opening of the clamp 352, the inner shrink ring 351 is compressed, forming a rigid locking force and fixing the leveled support platform 4 to the position. A connecting rod 353 is rotatably connected between the two ends of the opening of the clamp 352. A threaded post 354 is fixedly connected to one end of the connecting rod 353. A locking nut 355 is fitted on the outer side of the threaded post 354. One side of the locking nut 355 contacts one end of the clamp 352.

[0044] The observation instrument 6 includes multiple support plates 62, the bottom of which are detachably connected to the top of the support platform 4. A fixing ring 63 is provided at the other end of each support plate 62, which secures the electronic compartment 64 via a detachable structure, facilitating installation and maintenance and ensuring equipment stability. The electronic compartment 64 is detachably connected to the inner side of the fixing ring 63, housing built-in sensors for data collection. An observation cable 65 is provided at the top of the electronic compartment 64, transmitting data in real time to external equipment to ensure continuous monitoring. A telescopic measuring rod 66 is provided at the bottom of the electronic compartment 64. The telescopic measuring rod 66 is in contact with the dam surface through its vertical telescopic structure, which detects settlement changes in real time and feeds back the data. One end of the support platform 4 is fixedly connected to a limiting ring 61, which restricts the movement trajectory of the telescopic measuring rod 66, ensuring its vertical rise and fall and avoiding deviation that affects measurement accuracy. The outer wall of the telescopic measuring rod 66 is slidably connected to the inner side of the limiting ring 61. The bottom of the limiting ring is detachably connected to a sleeve 67, which covers the telescopic path of the telescopic measuring rod 66, isolates it from external dust and water vapor erosion, and protects the internal structure. The bottom of the telescopic measuring rod 66 is fixedly connected to a sealing element 68.

[0045] The sealing element 68 includes a grounding block 681, the top of which is fixedly connected to the bottom of the telescopic measuring rod 66. The grounding block 681 is provided with a first sealing ring 682 and a second sealing ring 683. The double-layer sealing design prevents external environmental media from seeping into the sleeve 67. The grounding block 681 is provided with a tightening outer ring 684 and a tightening inner ring 685. The sealing ring is adjusted by adjusting the compression of the set screw 686 to dynamically enhance the sealing performance and adapt to different working conditions. The two ends of the tightening inner ring 685 are slidably connected to the inside of the tightening outer ring 684. The inner sides of both the tightening inner ring 685 and the tightening outer ring 684 are in contact with the outer side of the second sealing ring 683. The sleeve 67 is telescopic, and the bottom of the sleeve 67 is detachably connected between the first sealing ring 682 and the second sealing ring 683. Both the outer tightening ring 684 and the outer tightening ring 685 are rotatably connected to a set screw 686. The set screw 686 serves as a manual adjustment tool. When rotated, it pushes the tightening ring to compress the sealing ring, thereby achieving flexible control of the sealing pressure. The set screw 686 is threadedly connected to the outside of the grounding block 681.

[0046] Example 2: Refer to Figure 9Based on Embodiment 1, this embodiment optimizes the design of the transmission rod 341. Specifically, the transmission rod 341 is externally equipped with a reinforcement member 36, which includes a threaded rod 361. The subsequent structure moves through the drive of the threaded rod 361. The outer side of the threaded rod 361 is threadedly connected to the outside of the transmission rod 341, and a cam 362 is fixedly connected to the end of the threaded rod 361. When the threaded rod 361 rotates, it drives the cam 362 to rotate and move linearly at the same time. Multiple limiting blocks 363 are fixedly connected to the top of the partition plate 33. The top of the limiting blocks 363 contacts the outer wall of the cam 362. The contact between the limiting blocks 363 and the cam 362 restricts the downward vertical movement of the transmission rod 341. Thus, the design of the four reinforcement members 36 ensures that the transmission rod 341 remains stable after the support platform 4 is adjusted, thereby ensuring the stability of the support platform 4.

[0047] Furthermore, the top of the limiting block 363 is provided with multiple arc-shaped grooves, and the outer surface of the cam 362 is provided with multiple circular protrusions. The shape of the circular protrusions matches the shape of the arc-shaped grooves, so that the outer surface of the cam 362 forms a mutual squeezing effect after contacting the top of the limiting block 363. The arc-shaped grooves and circular protrusions prevent the cam from slipping. Thus, after the support platform 4 is adjusted, the squeezing action between the cam 362 and the limiting block 363 keeps the entire support platform 4 stable.

[0048] Furthermore, the width of the limiting block 363 is greater than the width of the cam 362, and the transmission rod 341 has a movable groove inside, within which the cam 362 rotates. The width of the movable groove is greater than the width of the cam 362. This allows the rotation of the cam 362 to be unrestricted. Moreover, since the threaded rod 361 drives the cam 362 to rotate while simultaneously performing linear motion, the design of the limiting block 363 being wider than the cam 362 ensures that the cam 362 can still maintain close contact with the outer surface of the limiting block 363 after performing linear motion.

[0049] After the support platform 4 is adjusted, the threaded rod 361 is rotated. The rotation of the threaded rod 361 drives the cam 362 to rotate, so that the convex surface of the cam 362 contacts and presses against the groove surface on the limiting block 363, thereby limiting the movement of the entire transmission rod 341 in the vertical direction. This makes it difficult for the support platform 4 to shake when affected by external forces, thus ensuring that the entire support platform 4 remains stable when the observation instrument 6 is operating.

[0050] Working principle: First, place the base 1 at the target observation position of the dam, and forcefully insert the ground nail 2 at the bottom of the base 1 into the ground. Through the stable engagement of the ground nail 2 with the ground, the base 1 is ensured to remain stable during subsequent observation and will not be displaced or shaken due to external factors.

[0051] Next, the leveling mechanism 3 is used to level the support platform 4. The bracket 31 in the leveling mechanism 3 has a universal joint 32 at its top. The top node of the universal joint 32 is connected to the bottom of the support platform 4. When the base 1 is installed on an inclined surface, the universal joint 32 can be used to flexibly adjust the support platform 4 at multiple angles, thus keeping the support platform 4 level. During this process, the buffer 34 plays an auxiliary role: the rotation of the support platform 4 compresses or stretches the transmission rod 341, thereby driving the corresponding transmission rod 341 to move vertically. Furthermore, the sliding column 342 slides within the groove 345, causing the first spring 344 to deform, and the movement of the transmission column causes the second spring 347 to deform, reducing the impact and vibration during leveling and providing a certain preload.

[0052] After leveling, the support platform 4 is fixed by locking member 35. The bottom of the inner retraction ring 351 of locking member 35 is fixed to the top of partition 33. The clamp 352 is sleeved on the outside of the inner retraction ring 351. The locking nut 355 on the threaded column 354 is rotated, so that the two ends of the opening of the clamp 352 are rotated and tightened through the connecting rod 353, thereby generating pressure on the inner retraction ring 351, thus fixing the position of the transmission column. When the support platform 4 is subjected to external force, the support platform 4 tends to tilt. The preload of spring 1 344 and spring 2 347 alleviates the tilting tendency of the support platform 4, thereby ensuring that the support platform 4 always remains horizontal after adjustment, thus improving the observation accuracy.

[0053] Subsequently, the observation instrument 6 is installed. After adjusting the support plate 62 to a suitable angle, the electronic chamber 64 is installed inside the fixing ring 63. The observation cable 65 at the top of the electronic chamber 64 is connected to the external data acquisition equipment. The outer wall of the telescopic measuring rod 66 at the bottom of the electronic chamber 64 is slidably connected to the inner side of the limiting ring 61 to ensure that the telescopic measuring rod 66 is vertical and stable. In the sealing element 68 at the bottom of the telescopic measuring rod 66, the grounding block 681 is provided with sealing ring 1 682 and sealing ring 2 683. By rotating the set screw 686, the tightening outer ring 684 and tightening inner ring 685 slide inside the grounding block 681 and squeeze the sealing ring 2 683 to enhance the sealing effect. The bottom of the telescopic sleeve 67 is connected between sealing ring 1 682 and sealing ring 2 683 to further ensure the sealing performance and structural stability. It also allows the sleeve 67 to extend and retract synchronously while the telescopic measuring rod 66 descends, thereby protecting the telescopic measuring rod from the influence of the external environment and improving the measurement accuracy.

[0054] Finally, counterweights 5 of the same weight as the observation instrument 6 are installed at the other ends of the support platform 4. Through the principle of weight balance, this ensures that the support platform 4 remains balanced during observation, preventing tilting due to excessive weight on one side and affecting observation accuracy. At this point, the entire device is installed and debugged. The dam settlement can be monitored in real time via the telescopic measuring rod 66 of the observation instrument 6, and the electronic compartment 64 transmits the data to external equipment via the observation cable 65, completing the settlement observation work.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reservoir dam settlement monitoring device, comprising a base (1), characterized in that: The base (1) is provided with a leveling mechanism (3) at the top, and a support platform (4) is provided at the top of the leveling mechanism (3). An observation instrument (6) is provided at one end of the support platform (4). The leveling mechanism (3) includes a bracket (31), the bottom of which is fixedly connected to the top of the base (1). A universal joint (32) is provided on the top of the bracket (31), and the top node of the universal joint (32) is connected to the bottom of the support platform (4). A partition (33) is fixedly connected to the outside of the bracket (31), and a buffer (34) is provided on the inner wall of the partition (33). A locking element (35) is fixedly connected to the top of the partition (33). The buffer (34) includes multiple transmission rods (341), the outer side of the transmission rod (341) is slidably connected to the inner wall of the partition (33), the bottom of the transmission rod (341) is fixedly connected to an anti-detachment block (346), and a second spring (347) is fixedly connected between the bottom of the partition (33) and the anti-detachment block (346), and the second spring (347) is sleeved on the outer side of the transmission rod (341); The buffer (34) also includes a slide rod (343), the two ends of which are fixedly connected to the bottom of the support platform (4). Two springs (344) are sleeved on the outside of the slide rod (343). A slide column (342) is slidably connected to the outside of the two slide rods (343). The outer wall of the slide column (342) is connected to multiple springs (344). The outer wall of the slide column (342) is rotatably connected to the top of the transmission rod (341). The bottom of the support platform (4) is provided with multiple sliding grooves (345), and the two ends of the sliding column (342) are slidably connected inside the sliding grooves (345), and the sliding grooves (345) are sized to allow the top of the transmission column to rotate.

2. The reservoir dam settlement monitoring device according to claim 1, characterized in that: The locking component (35) includes an inner shrink ring (351), the bottom of which is fixedly connected to the top of the partition (33). A clamp (352) is fitted on the outer side of the inner shrink ring (351). A connecting rod (353) is rotatably connected between the two ends of the opening of the clamp (352). A threaded post (354) is fixedly connected to one end of the connecting rod (353). A locking nut (355) is fitted on the outer side of the threaded post (354). One side of the locking nut (355) contacts one end of the clamp (352).

3. The reservoir dam settlement monitoring device according to claim 1, characterized in that: The observation instrument (6) includes multiple support plates (62), the bottom of which is detachably connected to the top of the support platform (4). The other end of the multiple support plates (62) is provided with a fixing ring (63). An electronic chamber (64) is detachably connected to the inner side of the fixing ring (63). An observation cable (65) is provided on the top of the electronic chamber (64). A telescopic measuring rod (66) is provided at the bottom of the electronic chamber (64). A limiting ring (61) is fixedly connected to one end of the support platform (4). The outer wall of the telescopic measuring rod (66) is slidably connected to the inner side of the limiting ring (61). A sleeve (67) is detachably connected to the bottom of the limiting ring. A sealing element (68) is fixedly connected to the bottom of the telescopic measuring rod (66).

4. The reservoir dam settlement monitoring device according to claim 3, characterized in that: The sealing element (68) includes a grounding block (681). The top of the grounding block (681) is fixedly connected to the bottom of the telescopic measuring rod (66). The grounding block (681) is provided with a sealing ring one (682) and a sealing ring two (683). The grounding block (681) is provided with a tightening outer ring (684) and a tightening inner ring (685). The two ends of the tightening inner ring (685) are slidably connected to the inside of the tightening outer ring (684). The inner sides of the tightening inner ring (685) and the tightening outer ring (684) are in contact with the outer side of the sealing ring two (683). The outer sides of the tightening outer ring (684) and the tightening inner ring (685) are rotatably connected with a set screw (686). The set screw (686) is threadedly connected to the outside of the grounding block (681).

5. The reservoir dam settlement monitoring device according to claim 4, characterized in that: The sleeve (67) is telescopic, and the bottom of the sleeve (67) is detachably connected between sealing ring one (682) and sealing ring two (683).

6. The reservoir dam settlement monitoring device according to claim 1, characterized in that: The other ends of the support platform (4) are provided with counterweights (5), and the weight of the counterweights (5) is the same as that of the observation instrument (6). The bottom of the base (1) is provided with multiple ground nails (2).

Images