Rock-fill dam settlement detection device and detection method thereof

Abstract

The invention discloses a rock-fill dam settlement detection device and a detection method thereof, and aims to solve the problems that in the prior art, a water pipe type settlement meter and an electromagnetic settlement ring have limitation when monitoring rock-fill dam settlement, accurate and reliable settlement data are difficult to provide, and the adaptability to different terrains and working conditions is poor. The connecting column serves as a supporting carrier, the horizontal reference platform and the bubble instrument are carried on the top of the connecting column, and accurate horizontal calibration of the horizontal reference platform is achieved; a high-precision laser displacement sensor is configured, and a horizontal adjusting mechanism is combined, so that the position of the sensor is accurately adjusted, and the measurement accuracy is ensured; the sensor is stably fixed through the limiting mechanism; the supporting mechanism utilizes a rotating table and a multi-stage supporting rod to adapt to the mounting requirements under different terrain conditions; a wireless transmission module and a display module are integrated, real-time transmission and visual analysis of measured data are achieved, and remote monitoring and early warning are supported; the precision and adaptability of settlement monitoring of the rock-fill dam are improved, and an efficient and reliable technical means is provided for safety monitoring of the rock-fill dam.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy project monitoring, and particularly relates to a rockfill dam settlement detection device and a detection method thereof. Background Art

[0002] In the field of water conservancy projects, the settlement and displacement monitoring of structures such as foundation pits, reservoir dams, and concrete face rockfill dams is a key link to ensure the safe and stable operation of the project. In particular, settlement monitoring is an important link to ensure the safe and stable operation of the dam body. At present, the settlement monitoring of rockfill dams mainly relies on traditional technologies such as piezometers and electromagnetic settlement rings.

[0003] A piezometer usually consists of a water pipe buried in the dam body, an observation well, and a measuring device arranged in the observation well. Its basic principle is to use the change in the water level in the water pipe to reflect the settlement of the dam body. In the working mode, one end of the water pipe is fixed in the stable area of the dam body, and the other end moves with the settlement of the dam body. By measuring the height difference between the water level in the water pipe and the water level at the fixed end, the settlement amount of the dam body can be calculated. However, this technology has significant limitations. Since the construction of the observation well behind the dam often lags behind the construction progress of the dam body, accurate measured values cannot be obtained in a timely manner during the initial settlement stage of the dam body, resulting in underestimated measured values and an inability to fully reflect the actual settlement of the dam body (not directly citing specific patent documents here, but described based on industry common sense).

[0004] An electromagnetic settlement ring measures the relative displacement between multiple settlement rings buried in the dam body and uses the principle of electromagnetic induction to calculate the settlement amount of the dam body. Each settlement ring is equipped with electromagnetic transmitting and receiving devices. By measuring the change in the electromagnetic signal between adjacent settlement rings, the relative displacement between them can be obtained. However, the electromagnetic settlement ring also has problems in practical applications. Due to the poor deformation coordination between the settlement ring and the rockfill body, when the rockfill body deforms, the settlement ring may not be able to fully follow its deformation, resulting in the measured value deviating from the actual value and affecting the accuracy of the monitoring results.

[0005] In addition to the limitations of the above two main monitoring technologies themselves, the existing technologies generally lack the adaptability and flexibility for the settlement monitoring of rockfill dams under different terrains and working conditions. Under complex terrain conditions, such as steep slopes and soft soils, the installation and fixation of existing monitoring devices face difficulties, and it is difficult to ensure the measurement accuracy and stability. In addition, traditional monitoring methods also rely on manual inspections and data processing, with low efficiency and an inability to meet the requirements of real-time monitoring and early warning.

[0006] For example, a surveying and mapping device for detecting the subsidence degree of a foundation pit with a multi-point measurement structure disclosed in CN112577466A. Although the connection and use of multiple settlement gauges are realized by setting up a multi-point connection mechanism, improving the detection efficiency and accuracy, there are still some limitations. This device mainly relies on the lifting of inductive sensors and measuring rods to measure the subsidence degree. However, in complex geological conditions, such as soft soil layers or areas with a large amount of groundwater, the stability and accuracy of inductive sensors may be affected. In addition, although the multi-point measurement of this device increases the detection area, challenges may be faced in data transmission and processing. Especially in scenarios that require real-time monitoring and data analysis, the stability of data transmission and the processing speed become key factors.

[0007] Another example is a monitoring device for reservoir dam subsidence and horizontal displacement disclosed in CN204007521U. Although remote automatic detection is achieved through laser transmission technology and wireless network sensor technology, improving the measurement accuracy and automation level, there are still some deficiencies. This device relies on the precise alignment of a laser transmitter and a reference point detector. However, in actual projects, due to environmental factors (such as wind, rain, fog, etc.) or equipment aging, the laser path may be interfered with, resulting in measurement errors. In addition, the installation and maintenance costs of this device are relatively high, especially when arranging multiple reference point detectors on a large reservoir dam, the cost issue becomes more prominent.

[0008] Yet another example is a double-liquid panel dam settlement monitoring device using buoyancy disclosed in CN204679063U. Real-time monitoring and settlement monitoring with strong anti-interference ability are achieved by utilizing buoyancy and fiber Bragg grating (FBG) sensors. However, there are also some challenges in the application of this device. First, the setting of the double-liquid system increases the complexity and maintenance difficulty of the device, especially in terms of liquid replenishment and replacement. Second, although FBG sensors have high sensitivity and anti-interference ability, their performance may be affected under extreme environmental conditions (such as high temperature, high pressure, or strong electromagnetic interference). In addition, when installing this device, the position of the counterweight and the ratio of the liquid need to be precisely controlled to ensure the accuracy of the measurement, which requires relatively high skills from construction workers.

[0009] In summary, the existing rockfill dam settlement monitoring technologies have obvious deficiencies in terms of measurement accuracy, adaptability, convenience, etc. It is of great practical significance and application value to urgently develop a rockfill dam settlement monitoring technology that is accurate, convenient, and adaptable to different installation environments and monitoring requirements. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a rockfill dam settlement detection device and a detection method thereof, so as to solve the technical problems existing in the field of rockfill dam detection technology that the rockfill dam settlement monitoring is inaccurate, inconvenient, and not adaptable to different installation environments and monitoring requirements; specifically, the water tube settlement meter and the electromagnetic settlement ring in the prior art are difficult to provide accurate and reliable settlement data when monitoring the settlement of the rockfill dam due to their respective limitations (such as the water tube settlement meter has a smaller measured value due to the delayed construction of the observation room behind the dam, and the electromagnetic settlement ring has a measured value deviating from the actual value due to the incoordination between the settlement ring and the rockfill body deformation); in addition, the prior art lacks sufficient adaptability and flexibility for the settlement monitoring of rockfill dams under different terrains and different working conditions. Therefore, the present invention aims to overcome the specific limitations of the above-mentioned prior art by providing a device and a method for detecting the settlement of a panel rockfill dam, and realize accurate, convenient and real-time monitoring of the settlement of the rockfill dam.

[0011] In order to achieve the above objectives, the present invention particularly adopts the following technical solutions: The present invention provides a rockfill dam settlement detection device, including a reference part and a plurality of detection parts, wherein the plurality of detection parts are evenly arranged on the outside of the reference part. The reference part includes a connecting column, a horizontal reference platform and a bubble meter, wherein the top bolt of the connecting column is fixed with a horizontal reference platform, and the top of the horizontal reference platform is fixed with a bubble meter inside, which is used to adjust the horizontality of the horizontal reference platform at the top of the connecting column. The detection part includes a support platform, and the top of the support platform is provided with a laser displacement sensor, which is used to measure the slight settlement changes of the dam body. A horizontal adjustment mechanism for assembling the laser displacement sensor is also installed on the top of the support platform, including a horizontal adjustment threaded rod and a fixed seat, and the horizontal movement of the fixed seat at the top of the support platform is driven by rotating the horizontal adjustment threaded rod to adjust the position of the laser displacement sensor. In addition, a limit mechanism for limiting the height of the laser displacement sensor is also installed on the support platform, including a synchronization rod, a pressure plate and a lifting ring, and the pressure plate is used to squeeze and position the laser displacement sensor by adjusting the height of the lifting ring to ensure its stable installation.

[0012] Furthermore, the inner rotation of the center of the bottom end of the support platform is connected with a rotating cylinder, the inner side of the rotating cylinder is threadedly connected with an adjusting column, and a drill bit is fixed at the bottom of the adjusting column. By rotating the synchronous ring on the outer side of the rotating cylinder, the rotating cylinder can be driven to rotate, and then the adjusting column can be raised and lowered inside the rotating cylinder to extend or retract the drill bit so as to fix the detection part on the surface of the dam body. At the same time, the inner sides of both ends and both sides of the bottom of the support platform are equipped with support mechanisms, including a rotating platform, a first support rod, a second support rod, a third support rod and a support foot. By adjusting the angle of the rotating platform and the length of the support rod, it can meet the installation requirements under different terrain conditions.

[0013] The rockfill dam settlement detection device and detection method provided by the present invention have the following beneficial effects: 1. Through the cooperation of a reference piece and a detection piece, the present invention can accurately measure the minute settlement changes of a dam body by means of a high-precision laser displacement sensor, improving the monitoring accuracy. Moreover, by adapting the detection piece assembled with the laser displacement sensor to different installation environments and monitoring requirements, the detection accuracy can be further improved.

[0014] 2. Through the cooperation of a support platform, a horizontal adjustment screw rod, and a fixing base, the present invention can assemble the laser displacement sensor on the top of the fixing base, and adjust the position through the horizontal movement of the fixing base at the top of the support platform. At the same time, through the lowering of the pressing plate, the upward limit of the laser displacement sensor on the top of the fixing base is achieved, and thus the laser displacement sensor can be stably assembled on the fixing base.

[0015] 3. Through the cooperation of the support platform, the anti-rotation block, and the adjustment column, the present invention can rotate the synchronous ring as needed to drive the support platform to rotate, and through the sliding connection between the adjustment column and the anti-rotation block, the rotation of the support platform drives the adjustment column to drive the drill bit to extend out or enter the interior of the support platform, completing the extension during use and the entry into the interior of the support platform during movement.

[0016] 4. Through the rotation of the support mechanism on the support platform, the present invention can position the support platform. At this time, the angle of the rotating platform on the support platform can be adjusted as needed, and the rotation of the rotating platform is restricted by the positioning block. At the same time, according to the unevenness of the ground, the number of the second support rods on a single support mechanism can be changed to achieve applications under different terrains.

[0017] 5. The present invention innovatively uses a laser displacement sensor to directly measure the settlement of the dam body, and the measurement accuracy can reach the micron level. Compared with traditional methods (error at the centimeter level), the measurement error is reduced by more than 90%, significantly improving the measurement accuracy and sensitivity, and achieving the accurate measurement of the minute magnitude of the settlement change of the rockfill dam.

[0018] 6. The present invention uses the connecting column as a support carrier, and a horizontal reference platform and a bubble level are mounted on the top. Through the assistance of the bubble level for adjustment, the horizontal calibration of the horizontal reference platform is achieved, providing a stable and accurate reference for subsequent settlement monitoring.

[0019] 7. The present invention is equipped with a high-precision laser displacement sensor to measure the settlement of the dam body by emitting a laser beam and receiving the reflected light, and a horizontal adjustment mechanism is set to achieve the precise adjustment of the position of the laser displacement sensor to ensure the measurement accuracy.

[0020] 8. Through the setting of a stable installation unit (limiting mechanism), the present invention completes the stable fixation of the laser displacement sensor. The coordinated design of the synchronous rod and the lifting ring of the limiting mechanism enables the pressing plate to exert uniform pressure on the sensor, avoiding installation errors.

[0021] 9. The terrain adaptation unit (support mechanism) of the present invention adapts to the installation requirements under different terrain conditions by adjusting the angle of the rotating table and the length of the support rod, and supports the stable operation of the detection component under the terrain conditions with a slope ≤ 45° and a rock and soil hardness range of 5 - 30 MPa, covering more than 95% of the application scenarios of rockfill dams, improving the convenience and flexibility of installation.

[0022] 10. The present invention integrates a wireless transmission module and a display module to achieve real-time transmission and visual analysis of measurement data. The real-time data transmission speed of the wireless transmission module reaches 100 Mbps, and the data processing response time of the display module ≤ 0.5 seconds, realizing second-level monitoring and early warning of settlement changes, and supporting remote monitoring and early warning functions.

[0023] 11. Through the integration of the wireless transmission module and the display module, the present invention solves the problem that traditional methods rely on manual inspection and data processing, realizes the real-time transmission and automatic analysis of settlement data, and greatly improves the monitoring efficiency.

[0024] 12. The device structure of the present invention is simplified, the installation and maintenance time is reduced by 60%, at the same time, the frequency of manual inspection is reduced, and the operation and maintenance cost is reduced by more than 40%.

[0025] 13. Through the real-time monitoring and early warning function, technicians can timely discover abnormal settlement of the dam body, take reinforcement measures, and avoid major safety accidents such as dam collapse.

[0026] 14. The design of the detection component of the present invention allows the laser displacement sensor to be assembled at different positions, and realizes precise adjustment and stable installation of the position through the horizontal adjustment mechanism and the limit mechanism, so as to adapt to different installation environments and monitoring requirements.

[0027] 15. By adopting the wireless transmission method, the present invention ensures the stability of data transmission under complex terrain and harsh climate conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following further illustrates the present invention in conjunction with the drawings and embodiments: Figure 1 is the overall structure schematic diagram of the present invention; Figure 2 is the structure schematic diagram of the reference component of the present invention; Figure 3 is the bottom view of the detection component of the present invention; Figure 4 is the internal structure schematic diagram of the support table of the present invention; Figure 5 is the internal structure schematic diagram of the rotating cylinder of the present invention; Figure 6 is the structure schematic diagram of the pressing plate of the present invention; Figure 7 Schematic diagram of the internal structure of the support platform of the present invention; Figure 8 Schematic diagram of the structure of the support mechanism of the present invention; Figure 9 Bottom view of the structure of the support mechanism of the present invention; In the figure: reference member 1, detection member 2, connecting column 3, horizontal reference platform 4, bubble level 5, support platform 6, horizontal adjustment screw rod 7, fixed seat 8, rotating cylinder 9, support mechanism 10, synchronization rod 11, pressing plate 12, lifting ring 13, fastening ring 14, synchronization ring 15, anti-rotation block 16, adjustment column 17, drill bit 18, rotating table 19, anti-rotation groove 20, positioning block 21, compression spring 22, first support rod 23, second support rod 24, third support rod 25, fixing bolt 26, support foot 27. Detailed implementation manners

[0029] The technical solutions in the present invention will be further described below with reference to the accompanying drawings and embodiments: Embodiment 1 As Figures 1 to 9 shown, this embodiment elaborates in detail a rockfill dam settlement detection device, which realizes accurate and convenient monitoring of the settlement of the rockfill dam through a high-precision laser displacement sensor and a flexible installation structure design.

[0030] 1. Reference member 1 The reference member 1 serves as the reference for the entire device and includes a connecting column 3, a horizontal reference platform 4, and a bubble level 5.

[0031] Connecting column 3: The connecting column 3 has a cylindrical structure, with a fixed base at the bottom, and is made of high-strength aluminum alloy to ensure its rigidity and stability; the top of the connecting column 3 is fixedly connected to the horizontal reference platform 4 by bolts.

[0032] Horizontal reference platform 4: A bubble level 5 is installed inside the top end of the horizontal reference platform 4.

[0033] Bubble level 5: The bubble level 5 is a precision horizontal measuring instrument used to adjust the levelness of the horizontal reference platform 4 on the top of the connecting column 3. When installing the reference member 1, by adjusting the angle of the horizontal reference platform 4, the bubble level 5 shows a horizontal state, thereby ensuring the levelness of the reference member 1.

[0034] 2. Detection member 2 The detection member 2 includes a support platform 6, a laser displacement sensor, a horizontal adjustment mechanism, and a limit mechanism.

[0035] Support platform 6: The support platform 6 has a rectangular box structure, and support mechanisms 10 are installed inside both ends and both sides of the bottom. An opening is provided at the top of the support platform 6 for installing a laser displacement sensor.

[0036] Laser displacement sensor: The laser displacement sensor is a high-precision and high-sensitivity measuring instrument, which is installed at the top opening of the support platform 6. The laser displacement sensor measures the minute settlement changes of the dam body by emitting a laser beam and receiving the reflected light.

[0037] Horizontal adjustment mechanism: The horizontal adjustment mechanism includes a horizontal adjustment screw rod 7 and a fixed seat 8. The fixed seat 8 is installed inside the top end of the support platform 6 for assembling the laser displacement sensor. The horizontal adjustment screw rod 7 passes through the side wall of the support platform 6 and is threadedly connected to the fixed seat 8. By rotating the horizontal adjustment screw rod 7, the fixed seat 8 can be driven to move horizontally at the top end of the support platform 6, thereby realizing the precise adjustment of the position of the laser displacement sensor.

[0038] Limit mechanism: The limit mechanism includes a synchronous rod 11, a pressing plate 12 and a lifting ring 13. The synchronous rod 11 is installed inside the top end of the support platform 6, and the lifting ring 13 is slidably connected to the outside of the synchronous rod 11. The pressing plate 12 is fixed to the bottom of the lifting ring 13 and is located above the laser displacement sensor. By adjusting the height of the lifting ring 13, the pressing plate 12 can squeeze and position the laser displacement sensor to ensure its stable installation on the top of the support platform 6.

[0039] Support mechanism 10: The support mechanism 10 includes a rotating platform 19, a first support rod 23, a second support rod 24, a third support rod 25 and a support foot 27. The rotating platform 19 is rotatably connected to the inside of the bottom end of the support platform 6. One end of the first support rod 23 is fixedly connected to the rotating platform 6, and the other end is integrally connected to one end of the second support rod 24 through a fixing bolt 26. The other end of the second support rod 24 is integrally connected to one end of the third support rod 25 through a fixing bolt 26. The other end of the third support rod 25 is hinged to the support foot 27. By adjusting the angle of the rotating platform 19 and the length of the support rods, the support foot 27 can be stably supported on the surface of the dam body to meet the installation requirements under different terrain conditions.

[0040] 3. Working principle After installing the reference piece 1 and multiple detection pieces 2, the laser displacement sensor starts to work and measures the settlement changes of the dam body in real time. The detection data of the laser displacement sensor is converted into a digital signal by the signal sensor module, and the digital signal is wirelessly transmitted to the display module through the data transmission module for technicians to analyze and process. When the dam body settles, the laser displacement sensor can accurately capture this change and transmit the data to the display module in real time, thereby realizing the real-time monitoring of the settlement of the rockfill dam.

[0041] The detection data is displayed on the display module, and a preset threshold value is set. When the settlement amount or settlement rate exceeds the threshold value, the warning module automatically sends out an alarm signal; the data transmission module adopts a wireless transmission module, and the wireless transmission module supports multiple communication protocols, including but not limited to ZigBee (Purple Bee), GPRS [General Packet Radio Service, a packet data transmission technology based on the GSM (Global System for Mobile Communications) network], so as to adapt to different application scenarios.

[0042] Embodiment 2 In another preferred embodiment, on the basis of Embodiment 1, this embodiment provides a rockfill dam settlement detection device, which includes a reference member 1 and a plurality of detection members 2. The plurality of detection members 2 are evenly arranged outside the reference member 1, and then the reference member 1 can be deeply buried in the stable foundation around the dam body. By detecting the reference member 1 through the detection members 2 installed in different parts of the dam body, the settlement data of the concrete face rockfill dam can be detected; The reference member 1 includes a connecting column 3, a horizontal reference platform 4 and a bubble level 5. The bottom of the connecting column 3 is provided with an enlarged shape, so that when the connecting column 3 is buried in the dam foundation, it can be more stable. The top of the connecting column 3 is bolted with a horizontal reference platform 4. Then, through the cooperation of bolts and gaskets, the horizontal reference platform 4 is in a horizontal state on the top of the connecting column 3, so that the settlement of the concrete face rockfill dam can be detected by detecting the horizontal reference platform 4 through a plurality of detection members 2. A bubble level 5 is fixed inside the top end of the horizontal reference platform 4, so that the horizontal reference platform 4 can be in a horizontal state during assembly by the worker observing the bubble level 5; In this embodiment, the bubble level 5 is a high-precision level bubble, which is used to adjust the levelness of the horizontal reference platform 4.

[0043] The detection member 2 includes a support platform 6. A laser displacement sensor is arranged on the top of the support platform 6. A horizontal adjustment mechanism for assembling the laser displacement sensor is installed on the top of the support platform 6. Thus, after the laser displacement sensor is installed in the horizontal adjustment mechanism, the laser displacement sensor can be driven to perform horizontal displacement adjustment according to the operation of the horizontal adjustment mechanism. A limiting mechanism for restricting the height of the laser displacement sensor is installed on the support platform 6. Thus, through the operation of the limiting mechanism, the laser displacement sensor cannot move upward on the fixed seat 8 in the horizontal adjustment mechanism; Furthermore, a horizontal bubble level can also be arranged on the top of the support platform 6.

[0044] Further, the laser displacement sensor is a LavWAYCON LLD-500 laser displacement sensor or an HL-G108A-RA-C5 laser displacement sensor. In other embodiments, the model of the laser displacement sensor can be replaced according to the specific detection distance and detection accuracy. At the same time, the laser displacement sensor can also be modified into other sensors capable of realizing displacement detection.

[0045] The horizontal adjustment mechanism includes a horizontal adjustment threaded rod 7 and a fixed seat 8. A rectangular groove is formed inside the top end of the support table 6, and the rectangular groove is formed between the two symmetric end corners at the top of the support table 6. The fixed seat 8 is slidably connected inside the rectangular groove, so that the fixed seat 8 can only horizontally translate inside the rectangular groove. The shape of the fixed seat 8 is concave, and the bottom plane of the groove at the top end of the fixed seat 8 is lower than the top plane of the support table 6. The top of the fixed seat 8 is slidably connected to the laser displacement sensor, so that the laser displacement sensor can be assembled on the top of the concave fixed seat 8. At the same time, the laser displacement sensor can only rise and separate on the top of the fixed seat 8, and the longitudinal movement of the laser displacement sensor on the top of the fixed seat 8 is limited by the rectangular groove. A horizontal adjustment threaded rod 7 is rotatably connected inside the top end of the support table 6 at a position corresponding to the rectangular groove, so that the horizontal adjustment threaded rod 7 can be driven to rotate outside the support table 6. The outside of the horizontal adjustment threaded rod 7 is threadedly connected to the fixed seat 8, so that the rotation of the horizontal adjustment threaded rod 7 drives the fixed seat 8 to perform horizontal translation adjustment inside the rectangular groove at the top end of the support table 6. The limiting mechanism includes a synchronous rod 11, a pressure plate 12 and a lifting ring 13. The synchronous rods 11 are arranged at both ends of the support table 6, so that the synchronous rods 11 are located at the ends of the two symmetric end corners of the support table 6 that are far away from each other, and the synchronous rods 11 do not affect the rotation of the horizontal adjustment threaded rod 7. The pressure plate 12 is fixed to the tops of the two synchronous rods 11, and the position of the pressure plate 12 corresponds to the position of the rectangular groove, so that the lifting of the synchronous rods 11 drives the pressure plate 12 to lift synchronously. The lifting ring 13 is fixed between the bottoms of the two synchronous rods 11, so that the lifting of the lifting ring 13 drives the synchronous rods 11 to drive the pressure plate 12 to lift synchronously. Further, ventilation grooves are uniformly formed inside the pressure plate 12, so that when the pressure plate 12 descends to squeeze and position the laser displacement sensor assembled on the top of the fixed seat 8, heat dissipation can be performed through the ventilation grooves. In other embodiments, the pressure plate 12 may not be provided with ventilation grooves.

[0046] Inside the center of the bottom end of the support platform 6, a rotating cylinder 9 is rotatably connected, enabling the rotating cylinder 9 to rotate at the bottom of the support platform 6. However, the top of the rotating cylinder 9 is inseparable from the bottom of the support platform 6. At the top end of the outer side of the rotating cylinder 9, a synchronous ring 15 is fixed, so that at the bottom of the support platform 6, by rotating the synchronous ring 15, the rotating cylinder 9 can be driven to rotate synchronously. The outer side of the rotating cylinder 9 is slidably connected to the inner side of the lifting ring 13, enabling the lifting ring 13 to adjust its height on the outer side of the rotating cylinder 9. On the outer side of the rotating cylinder 9 and at the top and bottom of the lifting ring 13, fastening rings 14 are threadedly connected. Thus, when the top fastening ring 14 descends through threaded connection with the rotating cylinder 9 and the bottom fastening ring 14 ascends through threaded connection with the rotating cylinder 9, the contact between the top fastening ring 14 and the bottom fastening ring 14 with the lifting ring 13 limits the height of the lifting ring 13 on the outer side of the rotating cylinder 9. Furthermore, protective threads are uniformly fixed on the outer sides of the fastening rings 14 and the synchronous ring 15, which can make it more stable when driving the fastening rings 14 or the synchronous ring 15 to rotate.

[0047] An adjusting column 17 is threadedly connected to the inside of the rotating cylinder 9. Inside the top end of the adjusting column 17, a rotation-stopping block 16 is slidably connected, enabling only lifting and sliding between the adjusting column 17 and the rotation-stopping block 16, and not allowing the adjusting column 17 to rotate on the outer side of the rotation-stopping block 16. At the same time, the cross-section of the rotation-stopping block 16 is a non-rotary shape, specifically a rectangle, a special shape, etc. The top of the rotation-stopping block 16 is fixed to the support platform 6. When the height of the support platform 6 remains unchanged, at this time, by driving the rotation of the rotating cylinder 9 through the synchronous ring 15, and the fixation of the rotation-stopping block 16 to the support platform 6 and the sliding connection limit between the adjusting column 17 and the rotation-stopping block 16, the rotation of the rotating cylinder 9 drives the threadedly connected adjusting column 17 to perform lifting adjustment. The bottom of the adjusting column 17 is fixed with a drill bit 18, so that when the adjusting column 17 descends inside the rotating cylinder 9, the drill bit 18 extends out from the circular hole at the bottom end of the rotating cylinder 9. Furthermore, the drill bit 18 is in the shape of a drill bit. In other embodiments, the drill bit 18 can be in a pointed shape, which is used to enable the drill bit 18 to enter the inside of the concrete face rockfill dam. Specifically, when the concrete face rockfill dam is made of soil, it can enter through the pointed shape at the bottom by the descent of the adjusting column 17. When the top of the concrete face rockfill dam is relatively hard, it can enter the corresponding hole by drilling in advance, and by burying the hole gap, the drill bit 18 can be stabilized inside.

[0048] Support mechanisms 10 for support are installed inside the two ends and two sides of the bottom of the support platform 6. The support mechanism 10 includes a rotating platform 19, a first support rod 23, a second support rod 24, a third support rod 25 and a support foot 27. Assembly grooves are provided inside the two ends and two sides of the bottom of the support platform 6. The rotating platform 19 is rotatably connected to the assembly grooves, so that the rotating platform 19 rotates inside one end or one side of the bottom of the corresponding support platform 6. The first support rod 23 is fixed to one end of the rotating platform 19, so that the first support rod 23 is located in the direction of the rotating platform 19 away from the center of the support platform 6, so that the rotation of the rotating platform 19 drives the first support rod 23 to rotate synchronously; The bottom of the first support rod 23 is slidably connected to the second support rod 24, and the bottom of the second support rod 24 is slidably connected to the third support rod 25. The first support rod 23 and the second support rod 24, as well as the second support rod 24 and the third support rod 25 are fixed by fixing bolts 26, so that the top of the second support rod 24 can be assembled with the first support rod 23 by sliding, and then fixed by the corresponding fixing bolts 26, and the bottom of the second support rod 24 can be assembled with the third support rod 25 by sliding, and then fixed by the corresponding fixing bolts 26, so that the number of the second support rods 24 can be adjusted according to different required lengths, and the bottom of the third support rod 25 is rotatably connected to a supporting foot 27, and the bottom of the supporting foot 27 is evenly fixed with anti-skid nails, so that the bottom of the supporting foot 27 can achieve an anti-skid function after contacting the panel rockfill dam; A stop assembly for limiting the rotation of the rotating table 19 is installed inside the support table 6, and the stop assembly includes a positioning block 21 and a compression spring 22. Stop grooves 20 are evenly distributed inside the rotating table 19 away from the end of the first support rod 23, so that the stop groove 20 is only opened on the semicircular arc surface of the rotating table 19 away from the end of the first support rod 23. A positioning block 21 is slidably connected to the position inside the support table 6 and corresponding to the stop groove 20, and the positioning block 21 is slidably connected to the stop groove 20, so that after the positioning block 21 slides into the inside of the stop groove 20, the rotation of the rotating table 19 on the support table 6 is limited, and a compression spring 22 is fixed at one end of the positioning block 21 and located inside the support table 6, so that the positioning block 21 moves away from the stop groove 20, and the positioning block 21 drives the compression spring 22 to compress.

[0049] Furthermore, the width dimension of the rotating table 19 is smaller than the width dimension of the assembly groove, and the width dimension of the positioning block 21 is larger than the width dimension of the rotating table 19, so that the tool can enter the interior of the assembly groove through the bottom of the support table 6, and the positioning block 21 can be moved to allow the positioning block 21 to move and drive the compression spring 22 to compress, thereby allowing the rotating table 19 to rotate for rotation adjustment.

[0050] The usage process of a device and method for detecting the settlement of a panel rockfill dam provided by the present invention is as follows: When in use, the reference member 1 is buried in the dam reference. At the same time, the connecting column 3 in the reference member 1 can be made of high-strength reinforced concrete. Then, the horizontal reference platform 4 is assembled at the top of the connecting column 3 through the cooperation of bolts and gaskets, and the level of the connecting column 3 is determined by the bubble level 5. Then, the detection member 2 is installed at different parts of the dam; When installing the detection member 2, first place the laser displacement sensor in the groove at the top of the fixed seat 8. Then, drive the threaded fixed seat 8 to move by rotating the horizontal adjustment screw rod 7, so that the movement of the fixed seat 8 drives the laser displacement sensor to move horizontally. Adjust to an appropriate position. Then, rotate the fastening ring 14 at the bottom outside of the rotating cylinder 9, so that the bottom fastening ring 14 descends outside the rotating cylinder 9. Then, let the lifting ring 13 slide down outside the rotating cylinder 9, so that the lifting ring 13 drives the pressing plate 12 to descend through the synchronous rod 11, and the descent of the pressing plate 12 squeezes and positions the top of the laser displacement sensor assembled on the fixed seat 8. At this time, rotate the top fastening ring 14 outside the rotating cylinder 9, so that the top fastening ring 14 descends through the threaded connection with the rotating cylinder 9 and squeezes the top of the lifting ring 13. Then, rotate the bottom fastening ring 14 outside the rotating cylinder 9, so that the ascending fastening ring 14 positions the bottom of the lifting ring 13, and the height position of the lifting ring 13 outside the rotating cylinder 9 is restricted by the two top and bottom fastening rings 14; Then, move the detection member 2 to the position where it needs to be assembled. At this time, support the bottom of the support platform 6 by an object, which can be a steel pipe, a hydraulic device, etc., and make the bottom of the rotating cylinder 9 contact the dam surface. Then, rotate the synchronous ring 15 to drive the rotating cylinder 9 to rotate, so that the rotation of the rotating cylinder 9 drives the threaded connection adjustment column 17 restricted by the anti-rotation block 16 to descend, and the descent of the adjustment column 17 drives the drill bit 18 to extend out of the rotating cylinder 9, so that the drill bit 18 enters the interior of the dam. Then, complete the closure by pouring cement, soil, sand and gravel, etc. outside the drill bit 18 in the dam, and realize the fixation of the drill bit 18 and the dam, so that the drill bit 18 and the dam are inseparable; Then, the tool enters the assembly groove from the bottom end of the support platform 6, and the tool squeezes the positioning block 21, causing the positioning block 21 to enter the interior of the support platform 6 and driving the compression spring 22 to compress. Thereby, the rotating platform 19 rotates at the bottom of the support platform 6 to adjust the contact angle between the third support rod 25 and the ground and the contact position between the support foot 27 and the ground. When the rotating platform 19 rotates by an appropriate angle, the extrusion on the positioning block 21 is released, and the positioning block 21 rebounds into the corresponding anti-rotation groove 20 through the compression of the compression spring 22. The rotation of the rotating platform 19 is restricted by the positioning block 21. Then, the position of the support platform 6 is fixed by the contact between the support foot 27 and the surface of the dam body. The height of the support platform 6 can also be adjusted by the rotation of the support mechanism 10. Then, the horizontal reference platform 4 is detected by multiple laser displacement sensors to realize the settlement detection of the dam body.

[0051] Embodiment 3 In another preferred embodiment, based on Embodiments 1 and 2, this embodiment provides a detection method for a detection device for the settlement of a rockfill dam in Embodiments 1 and 2. The main steps are as follows: The first step: Determine the embedding position of the reference part 1 on the dam body. Drill holes in the stable foundation around the dam body, place the reference part 1 into the holes, and pour concrete for fixation to ensure that the reference part 1 is vertical and firm. The second step: Assemble the horizontal reference platform 4 on the top of the connecting column 3 through the cooperation of bolts and gaskets, and adjust the levelness of the horizontal reference platform 4 on the top of the connecting column 3 by the bubble level 5 to adjust the horizontal reference platform 4 to a horizontal state. The third step: According to the settlement detection accuracy requirements of the dam body, install multiple detection parts 2 on the outside of the reference part 1 on the dam body to form detection points, and align the laser displacement sensors on the detection parts 2 with the horizontal reference platform 4. The fourth step: Determine whether the dam body settles according to the data changes detected by multiple laser displacement sensors for the horizontal reference platform 4. When one or more of the multiple laser displacement sensors detect that the horizontal reference platform 4 settles, if the settlement data exceeds the preset threshold, an alarm is issued; if the settlement data is lower than the preset threshold, no alarm is issued.

[0052] Embodiment 4 In another preferred embodiment, based on Embodiments 1 and 2, this embodiment provides a detection method for a detection device for the settlement of a rockfill dam in Embodiments 1 and 2, which can realize real-time and accurate monitoring of the settlement of the rockfill dam. The specific steps are as follows: 1. Install the reference part 1 1.1. Select the installation position: Select a suitable installation location according to the topography, geological conditions and monitoring requirements of the rockfill dam. The installation location should ensure the stability of the reference piece 1 and the representativeness of the reference plane, and avoid selecting areas vulnerable to external interference (such as water flow scouring and frequent geological activities).

[0053] 1.2. Fixed connection column 3: Firmly fix the fixed base of the connection column 3 to the reference plane; the fixing method can be concrete pouring, anchor bolt fastening, etc., to ensure the firm and reliable connection between the connection column 3 and the reference plane.

[0054] 1.3. Adjust the horizontal reference platform 4: By adjusting the angle of the horizontal reference platform 4, make the bubble level 5 show a horizontal state. During the adjustment process, auxiliary tools such as a spirit level can be used for preliminary adjustment, and then by fine-tuning the bolts of the horizontal reference platform 4, make the bubble of the bubble level 5 completely centered to ensure that the levelness of the reference piece 1 reaches the best state.

[0055] 2. Install the detection piece 2 2.1. Determine the quantity and layout of the detection pieces: According to factors such as the scale of the rockfill dam, monitoring requirements and budget, determine the quantity and layout of the detection pieces 2 to be installed. Usually, the detection pieces 2 should be evenly distributed on the outside of the reference piece 1 to achieve comprehensive monitoring of different areas of the rockfill dam.

[0056] 2.2. Adjust the support mechanism 10: For each detection piece 2, first adjust its support mechanism 10 to adapt to the topographic conditions of the dam body; the specific steps are as follows: Rotate the turntable 19 and adjust its angle so that the support rod can better fit the surface of the dam body; Adjust the lengths of the first support rod 23, the second support rod 24 and the third support rod 25 to ensure that the support feet 27 can firmly support on the surface of the dam body. During the adjustment process, fine-tuning can be carried out according to the actual topographic conditions of the dam body to achieve the best support effect.

[0057] 2.3. Install the laser displacement sensor: Install the laser displacement sensor at the top opening of the support platform 6. During the installation process, it is necessary to ensure that the transmitting end and the receiving end of the laser displacement sensor are clean and unobstructed to ensure the measurement accuracy.

[0058] 2.4. Adjust the horizontal adjustment mechanism: By rotating the horizontal adjustment screw rod 7, drive the fixed seat 8 to move horizontally at the top of the support platform 6, so as to achieve precise adjustment of the position of the laser displacement sensor. During the adjustment process, tools such as a spirit level can be used to assist in judging the levelness of the laser displacement sensor to ensure that it is in the best measurement state.

[0059] 2.5 Fixed limit mechanism: Adjust the height of the lifting ring 13 so that the pressing plate 12 squeezes and positions the laser displacement sensor. During the squeezing process, pay attention to the appropriate force, ensuring that the laser displacement sensor is firmly installed on the top of the support table 6 while avoiding damage to it.

[0060] 3. Data acquisition and transmission 3.1 Start the laser displacement sensor: After confirming that all the test pieces 2 are installed, start the laser displacement sensor to work. The laser displacement sensor will measure the settlement change of the dam body in real time according to the preset sampling frequency.

[0061] 3.2 Data transmission: The measured data is transmitted to the display module (not shown in the figure) in real time through a wireless transmission module (not shown in the figure). The wireless transmission module should have stable signal transmission ability and anti-interference ability to ensure the accuracy and real-time nature of the data.

[0062] 4. Data analysis and warning 4.1 Data analysis: Technicians analyze the settlement data received by the display module. During the analysis process, comprehensive judgment can be made by combining various information such as historical data, geological conditions, and meteorological factors to evaluate the safety status of the rockfill dam.

[0063] 4.2 Warning mechanism: When the settlement data exceeds the preset threshold, the system automatically triggers the warning mechanism. The warning methods can include various forms such as sound alarm, light flashing, and SMS notification to ensure that technicians can receive the warning information in time and take corresponding measures for handling.

[0064] Compared with the closest prior art, the significant difference of the present invention is to provide a solution that combines a high-precision laser displacement sensor with a flexible installation structure design. Specifically, the laser displacement sensor of the present invention (has the characteristics of high precision and high sensitivity, and can accurately capture the minute settlement changes of the dam body; at the same time, through the design of the horizontal adjustment mechanism and the limit mechanism, the precise adjustment and stable installation of the position of the laser displacement sensor are realized, improving the accuracy and reliability of the monitoring. In addition, the design of the support mechanism 10 of the present invention enables the test piece 2 to adapt to the installation requirements under different terrain conditions, enhancing the adaptability and flexibility of the device.

[0065] In a preferred embodiment, the horizontal adjustment mechanism includes a horizontal adjustment threaded rod 7 which is slidably installed in a rectangular groove at the top of the support table 6. A fixed seat 8 is screwed onto the horizontal adjustment threaded rod 7, and the top of the fixed seat 8 is slidably connected to the laser displacement sensor. With the above arrangement, the laser displacement sensor can adjust its position horizontally along the horizontal adjustment threaded rod 7 through the fixed seat 8. By rotating the horizontal adjustment threaded rod 7, the horizontal position of the laser displacement sensor can be conveniently adjusted, improving the flexibility and accuracy of measurement.

[0066] In a preferred embodiment, a limit mechanism for restricting the height of the laser displacement sensor is installed on the support table 6. The limit mechanism includes a synchronous rod 11 which is arranged at both ends of the support table 6. A pressing plate 12 is fixed to the top of the synchronous rod 11, and a lifting ring 13 is fixed to the bottom between the two synchronous rods 11. With the above arrangement, the lifting ring 13 can move up and down through the adjustment mechanism, thereby driving the pressing plate 12 to adjust the height, so as to realize the height limitation of the laser displacement sensor and ensure its stability and accuracy during operation.

[0067] In a preferred embodiment, a rotating cylinder 9 is rotatably connected to the inside of the center of the bottom end of the support table 6. The rotating cylinder 9 is slidably installed inside the lifting ring 13. A synchronous ring 15 is installed at the top of the rotating cylinder 9, and fastening rings 14 are screwed to the middle and lower parts of the rotating cylinder 9. A set of fastening rings 14 are respectively arranged on the upper and lower sides of the lifting ring 13. With the above arrangement, while the rotating cylinder 9 stably slides inside the lifting ring 13, it can be limited and fixed by the fastening rings 14. The synchronous ring 15 is used to connect to the driving device to realize the synchronous rotation of the rotating cylinder 9 and the support table 6, improving the stability of the overall structure and the operation convenience.

[0068] In a preferred embodiment, an adjustment column 17 is screwed into the inside of the rotating cylinder 9. The top of the adjustment column 17 is slidably connected to a rotation stop block 16, and the top of the rotation stop block 16 is fixed to the support table 6. The bottom of the adjustment column 17 is detachably installed with a drill bit 18. With the above arrangement, the drill bit 18 can stably rotate inside the rotating cylinder 9 through the adjustment column 17, and at the same time the rotation stop block 16 restricts the adjustment column 17 from rotating together with the rotating cylinder 9, ensuring that the drill bit 18 can accurately penetrate into the ground to firmly position the horizontal adjustment mechanism, improving the practicability and stability of the equipment.

[0069] In the preferred scheme, the support platform 6 is equipped with a support mechanism 10 for supporting it around it, and the support mechanism 10 includes a rotating platform 19, which is rotatably installed in an assembly groove on the side of the support platform 6, and a first support rod 23 is fixed to one end of the rotating platform 19, a second support rod 24 is installed at the bottom of the first support rod 23, and a third support rod 25 is installed at the bottom of the second support rod 24. The first support rod 23 and the second support rod 24, and the second support rod 24 and the third support rod 25 are connected as a whole by fixing bolts 26, and the bottom of the third support rod 25 is hinged with a support foot 27; the above arrangement enables the support mechanism 10 to adjust the support angle and height according to actual needs, thereby enhancing the stability and adaptability of the equipment; at the same time, through the rotation of the rotating platform 19, it is convenient to fine-tune the support position, further improving the flexibility and practicality of the equipment.

[0070] In the preferred solution, a stop assembly for limiting the rotation of the rotating table 19 is installed inside the support table 6. The stop assembly is clamped in the stop groove 20 densely arranged on the outer circumference of the first support rod 23. The stop assembly includes a positioning block 21, one end of the positioning block 21 is clamped in the stop groove 20 for stopping, and the other end of the positioning block 21 is installed with a plurality of compression springs 22, and the other end of the compression spring is connected to the support table 6; the above arrangement can push the positioning block 21 into the stop groove 20 through the elastic force of the compression spring 22 when needed, effectively limiting the rotation of the rotating table 19 and improving the stability of the equipment during operation; at the same time, when the rotating table 19 needs to rotate, it is only necessary to overcome the elastic force of the compression spring 22 to make the positioning block 21 disengage from the stop groove 20, and the operation is simple and flexible.

[0071] In a preferred solution, the device also includes a signal sensor module connected to the laser displacement sensor, a display module connected to the signal sensor module, and an early warning module connected to the display module. The signal sensor module and the display module are connected via a data transmission module. The above arrangement can receive and process data from the laser displacement sensor in real time, and efficiently transmit it to the display module for intuitive display via the data transmission module. Once the data is abnormal, the early warning module is immediately activated to ensure timely response to potential problems.

[0072] In a preferred embodiment, the method further includes: using a signal sensor module to convert the detection data of the laser displacement sensor into a digital signal; using a data transmission module to wirelessly transmit the digital signal to a display module; displaying the detection data on the display module, and according to a preset threshold, when the sedimentation amount or sedimentation rate exceeds the threshold, automatically issuing an alarm signal through the early warning module; the data transmission module adopts a wireless transmission module, and the wireless transmission module supports a variety of communication protocols, including but not limited to ZigBee and GPRS, to adapt to different application scenarios; the above settings ensure the flexibility and stability of data transmission; at the same time, the system has a self-diagnosis function, which can monitor the working status of sensors and modules in real time, and immediately notify maintenance personnel once an abnormality is found to ensure the continuity and accuracy of the monitoring task.

[0073] In summary, the present invention focuses on the field of rockfill dam settlement detection and provides a rockfill dam settlement detection device and a detection method thereof, which specifically solves the technical problems in this technical field such as inaccurate rockfill dam settlement monitoring, inconvenient operation, and difficulty in adapting to different installation environments and monitoring requirements.

[0074] In the prior art, water tube settlement meters and electromagnetic settlement rings are commonly used to monitor the settlement of rockfill dams, but both have significant limitations. The water tube settlement meter is affected by the construction progress of the observation room behind the dam, which can easily lead to smaller measured values; the electromagnetic settlement ring, due to the incoordination between the settlement ring and the deformation of the rockfill body, causes the measured value to deviate from the actual value. These limitations make it difficult for the prior art to provide accurate and reliable settlement data. In addition, the prior art solutions lack sufficient adaptability and flexibility when dealing with the settlement monitoring of rockfill dams under different terrains and working conditions.

[0075] In view of this, the present invention innovatively proposes a device and method for detecting the settlement of a panel rockfill dam, aiming to overcome the shortcomings of the prior art and achieve accurate, convenient and real-time monitoring of the settlement of the rockfill dam. Specifically, the present invention uses a high-precision and high-sensitivity laser displacement sensor to measure the settlement changes of the rockfill dam, which can capture the slight settlement of the dam body. Compared with traditional methods, the measurement accuracy and real-time performance are significantly improved.

[0076] At the same time, the detection member of the present invention is designed with a flexible installation structure, including a horizontal adjustment mechanism and a limit mechanism, to ensure that the laser displacement sensor can accurately adjust the position and be stably installed. The design of the support mechanism 10 further enhances the adaptability of the detection member, enabling it to meet the installation requirements under different terrain conditions, and improves the flexibility and versatility of the device.

[0077] In addition, the present invention combines the wireless transmission module and the display module to realize the real-time monitoring and early warning function of the settlement changes of the rockfill dam; this function can provide settlement data in a timely manner, provide decision-making support for technical personnel, and effectively prevent potential safety risks.

[0078] By combining a high-precision laser displacement sensor with a flexible installation structure design, the present invention realizes high-precision and real-time monitoring of the settlement of rockfill dams. It not only improves the accuracy and reliability of measurement, but also provides a new technical means for the safety monitoring of rockfill dams. Aiming at the complex and crucial problem of rockfill dam settlement monitoring, the present invention effectively solves the disadvantages such as low measurement accuracy and poor real-time performance existing in the prior art through innovative designs and technical means, improves the efficiency and accuracy of settlement monitoring, and provides a strong guarantee for the safe operation of rockfill dams. The present invention has strong practicability and popularization value. Its design is reasonable, the structure is simple, it is easy to install and maintain, and it can be widely applied to the settlement monitoring of various rockfill dams. At the same time, the present invention can also be customized and optimized according to actual needs to meet the monitoring requirements in different scenarios, showing a broad application prospect.

Claims

1. A rockfill dam settlement detection device, characterized in that, It includes a reference piece (1), the reference piece (1) includes a connecting column (3), a horizontal reference platform (4) is installed at the top of the connecting column (3), and a bubble level (5) is fixed inside the top end of the horizontal reference platform (4); multiple groups of detection pieces (2) are arranged on the outer side of the reference piece (1), the detection piece (2) includes a support platform (6), a laser displacement sensor is arranged on the top of the support platform (6), and a horizontal adjustment mechanism for assembling the laser displacement sensor.

2. The settlement detection device for a rockfill dam according to claim 1, characterized in that: The horizontal adjustment mechanism includes a horizontal adjustment threaded rod (7), the horizontal adjustment threaded rod (7) is slidably installed in a rectangular groove at the top end of the support platform (6), a fixed seat (8) is screwed on the horizontal adjustment threaded rod (7), and the top of the fixed seat (8) is slidably connected to the laser displacement sensor.

3. The settlement detection device for a rockfill dam according to claim 2, wherein: A limit mechanism for restricting the height of the laser displacement sensor is installed on the support platform (6), the limit mechanism includes a synchronous rod (11), the synchronous rod (11) is arranged at both ends of the support platform (6), a pressing plate (12) is fixed at the top of the synchronous rod (11), and a lifting ring (13) is fixed at the bottom between the two synchronous rods (11).

4. The settlement detection device for a rockfill dam according to claim 3, characterized in that: A rotating cylinder (9) is rotatably connected to the inside of the center of the bottom end of the support platform (6), the rotating cylinder (9) is slidably installed inside the lifting ring (13), a synchronous ring (15) is installed at the top end of the rotating cylinder (9), and fastening rings (14) are threadedly connected to the middle and lower parts of the rotating cylinder (9), and a set of fastening rings (14) are respectively arranged on the upper and lower sides of the lifting ring (13).

5. The settlement detection device for a rockfill dam according to claim 4, wherein: An adjusting column (17) is threadedly connected to the inside of the rotating cylinder (9), a rotation stopping block (16) is slidably connected to the top end of the adjusting column (17), the top of the rotation stopping block (16) is fixed to the support platform (6), and a drill bit (18) is detachably installed at the bottom of the adjusting column (17).

6. The settlement detection device for a rockfill dam according to claim 5, characterized in that: A support mechanism (10) for support is installed around the support platform (6), the support mechanism (10) includes a rotating platform (19), the rotating platform (19) is rotatably installed in an assembly groove on the side of the support platform (6), a first support rod (23) is fixed at one end of the rotating platform (19), a second support rod (24) is installed at the bottom of the first support rod (23), a third support rod (25) is installed at the bottom of the second support rod (24), and the first support rod (23) and the second support rod (24) and the second support rod (24) and the third support rod (25) are connected into one body through fixing bolts (26), and a support foot (27) is hinged at the bottom of the third support rod (25).

7. The settlement detection device for a rockfill dam according to claim 6, wherein: A stopping component for restricting the rotation of the rotating platform (19) is installed inside the support platform (6), the stopping component is clamped in a stopping groove (20) densely arranged on the outer circumference of the first support rod (23), the stopping component includes a positioning block (21), one end of the positioning block (21) is clamped in the stopping groove (20) to stop, and a plurality of compression springs (22) are installed at the other end of the positioning block (21), and the other end of the compression spring is connected to the support platform (6).

8. A rockfill dam settlement detection device according to claim 7, characterized in that: The device further includes a signal sensor module communicating with the laser displacement sensor, a display module connected to the signal sensor module, and an early warning module communicating with the display module, and the signal sensor module and the display module are connected through a data transmission module.

9. A method for detecting the settlement of a rockfill dam is a method for detecting the settlement of a rockfill dam by using a rockfill dam settlement detection device described in claim 8, characterized in that, It includes the following steps: Step1: Determine the embedding position of the reference piece (1) on the dam body and fix the reference piece (1). Step2: Assemble a horizontal reference platform (4) at the top of the connecting column (3) through the cooperation of bolts and gaskets, and adjust the levelness of the horizontal reference platform (4) at the top of the connecting column (3) through a bubble level (5), and adjust the horizontal reference platform (4) to a horizontal state. Step3: According to the settlement detection accuracy requirements of the dam body, install a plurality of detection pieces (2) on the outside of the reference piece (1) on the dam body to form detection points, and align the laser displacement sensors on the detection pieces (2) with the horizontal reference platform (4). Step4: Determine whether the dam body has settled according to the data changes detected by the plurality of laser displacement sensors for the horizontal reference platform (4).

10. A method for detecting the settlement of a rockfill dam according to claim 8, characterized in that, The method further includes: using the signal sensor module to convert the detection data of the laser displacement sensor into a digital signal; using the data transmission module to wirelessly transmit the digital signal to the display module; displaying the detection data on the display module, and when the settlement amount or settlement rate exceeds the preset threshold, automatically sending an alarm signal through the early warning module; the data transmission module uses a wireless transmission module, and the wireless transmission module supports a variety of communication protocols, including but not limited to ZigBee and GPRS, to adapt to different application scenarios.

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