Foundation scouring and silting change optical fiber sensing recording device

Abstract

The application discloses a kind of ground scouring and silting change optical fiber sensing recording devices, it is related to engineering monitoring technical field, including integrated data general control, data classification controller and three groups and above protective shell, annular electromagnetic guide rail is equipped in the inside bottom end of protective shell, position adjusting assembly is equipped in the top of annular electromagnetic guide rail, real-time compensation environmental factors influence sensor under the cooperation of optical fiber recording control component, effectively solve the problem of optical fiber sensor data drift, significantly improve the stability and reliability of monitoring data, reduce the workload and error of artificial calibration, and through multidimensional monitoring system, intelligent self-calibration technology, multi-dimensional adjusting structure and efficient heat conduction design, significantly improve monitoring precision, stability and adaptability, so that in practical application, it can provide more reliable data support for ground stability evaluation and scouring and silting change prediction, effectively reduce geological disaster risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering monitoring, in particular to a foundation scouring and silting change optical fiber sensing recording device. BACKGROUND

[0002] In water conservancy projects, coastal protection, port construction and other projects, the foundation scouring and silting change has a significant impact on the stability and safety of the project. Long-term scouring or silting may cause problems such as dam collapse, channel blockage, and building foundation settlement. Traditional foundation scouring and silting monitoring methods mainly include manual measurement, water level observation, and automatic monitoring systems based on pressure sensors and ultrasonic sensors. With the development of optical fiber sensing technology, some optical fiber sensing recording devices have been applied to foundation scouring and silting change monitoring. However, the existing devices still have many defects and cannot meet the high-precision, large-scale, long-term stable monitoring requirements of actual projects.

[0003] Most of the current devices can only monitor local areas and cannot monitor large-area foundation scouring and silting changes comprehensively and in real time. Optical fiber sensors are easily affected by external environmental factors such as temperature, humidity, and mechanical vibration, resulting in monitoring data drift and errors. Therefore, a foundation scouring and silting change optical fiber sensing recording device is needed. SUMMARY

[0004] The purpose of the present application is to provide a foundation scouring and silting change optical fiber sensing recording device to solve the problem of monitoring data drift and errors caused by the influence of external environmental factors such as temperature, humidity, and mechanical vibration on the monitoring data of most devices that can only monitor local areas and cannot monitor large-area foundation scouring and silting changes comprehensively and in real time during the detection and recording process.

[0005] To achieve the above purpose, the present application provides the following technical solution: a foundation scouring and silting change optical fiber sensing recording device, comprising an integrated data master control, a data classification controller and three or more protective shells, an annular electromagnetic guide rail is arranged at the bottom of the interior of the protective shell, a position adjusting assembly is arranged at the top of the annular electromagnetic guide rail, a contact type stable heat conduction assembly is arranged at the top of the position adjusting assembly, and an optical fiber recording control assembly is arranged in the interior of the protective shell.

[0006] The optical fiber recording control assembly comprises an integrated detection structure composed of a strain sensor, a temperature sensor and a pressure sensor, a series feedback line is connected to the side line of the integrated detection structure, a self-calibration signal processor is connected to the top end of the series feedback line, an optical fiber compensation unit is connected to the bottom end of the series feedback line, the optical fiber compensation unit is composed of a stress reference optical fiber and a pressure-free reference optical fiber, a multi-sensor data acquisition module is connected to the bottom of the optical fiber compensation unit, a distributed optical fiber sensing node is connected to the bottom end of the multi-sensor data acquisition module, a detection end is connected to the bottom of the distributed optical fiber sensing node, and a detection surface is connected to the bottom of the detection end. When the system detects that the foundation scouring state changes significantly or the monitoring data is abnormal, the dynamic adjustment mechanism is triggered under the cooperation of the optical fiber recording control assembly, the integrated data master control sends instructions to the position adjustment assembly through the signal regulation line, the position adjustment assembly forms a circular track under the driving of the annular electromagnetic guide rail, the contact type stable heat conduction assembly enhances the contact stability of the optical fiber recording control assembly, and the local temperature is balanced through the heat conduction function to ensure the stability of the sensor working environment. In addition, the self-calibration signal processor dynamically adjusts the working parameters of the sensor according to the real-time monitoring data to realize self-adaptation to the changing environment. By integrating strain, temperature and pressure sensors into one and combining with the distributed optical fiber sensing network, a multi-dimensional monitoring system is constructed to more comprehensively obtain foundation scouring change information, realize accurate monitoring of complex geological environment, and compensate the influence of environmental factors on the sensor in real time by means of the optical fiber compensation unit and the self-calibration signal processor, effectively solve the problem of fiber sensor data drift, significantly improve the stability and reliability of the monitoring data, and reduce the workload and error of manual calibration.

[0007] Preferably, the top end of the detection surface is connected to a detection rod body, a heat dissipation flow guide groove is formed in the surface of the detection rod body, the bottom of the detection surface is connected to a cross-section contact end, the bottom of the cross-section contact end is connected to a detection head, and a soft rubber sleeve is arranged at the top end of the detection head.

[0008] Preferably, the top end of the self-calibration signal processor is connected to a signal regulation line, the side end of the signal regulation line is connected to a distributed line acquisition line, the top end of the distributed line acquisition line is connected to an integrated feedback line, and the integrated feedback line is connected to a data classification controller.

[0009] Preferably, the position adjustment assembly comprises a fixed sleeve rod, the bottom of the fixed sleeve rod is arranged in the inside of the annular electromagnetic guide rail, and a sliding inner toothed rod is slidingly connected to the inside of the fixed sleeve rod.

[0010] Preferably, the top end of the sliding inner tooth rack is connected with a connector, the top of the connector is connected with a mounting position seat, the outside of the fixed sleeve rod is arranged with a servo motor, the output end of the servo motor is connected with a gear, and the gear and the sliding inner tooth rack are connected in meshing mode.

[0011] Preferably, the contact type stable heat conduction assembly comprises a connecting plate, the connecting plate is fixedly connected with the mounting position seat, and the side end of the connecting plate is fixedly connected with a gap groove plate, and the bottom end of the gap groove plate is symmetrically provided with elastic clamping parts.

[0012] Preferably, the inside of the mounting position seat is provided with an electromagnetic guide rod, the side end of the electromagnetic guide rod is fixedly connected with an extended contact heat conduction phase change column, the extended contact heat conduction phase change column is provided in a cross structure, the left and right side end points of the extended contact heat conduction phase change column are in contact and connected with outer expansion contact elastic columns, and the side end of the outer expansion contact elastic column is rotationally connected with the elastic clamping part.

[0013] Preferably, the side end of the outer expansion contact elastic column is connected with a heat conduction phase change material end, and the heat conduction phase change material end and the extended contact heat conduction phase change column are used for guaranteeing the detection stability of the detection rod body, and simultaneously, efficiently contact heat conduction treatment is performed on the integrated detection structure, the optical fiber compensation unit and the distributed optical fiber sensing node in the detection rod body.

[0014] Preferably, the bottom center end of the protective shell is provided with a conduction detection recording end, the conduction detection recording end is provided in an inverted truncated cone shape, is used for increasing the detection contact area, and the top end of the conduction detection recording end is connected with the detection head.

[0015] Preferably, the bottom circumferential side of the protective shell is provided with a support abutting movable rod, and the support abutting movable rod is composed of an extension rod, a universal joint and a support weight block.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. In the present application, when the system detects that the foundation scouring state changes significantly or the monitoring data appears abnormal, the dynamic adjustment mechanism is triggered under the cooperation of the optical fiber recording control assembly, the integrated data master control sends instructions to the position adjustment assembly through the signal regulation line, the position adjustment assembly forms a circular track operation under the driving of the annular electromagnetic guide rail, the contact type stable heat conduction assembly enhances the contact stability of the optical fiber recording control assembly, and balances the local temperature through the heat conduction function, so as to protect the stable working environment of the sensor, in addition, the self-calibration signal processor dynamically adjusts the working parameters of the sensor according to the real-time monitoring data, realizes the self-adaptation to the changing environment, integrates the strain, temperature and pressure sensors, combines with the distributed optical fiber sensing network, constructs a multi-dimensional monitoring system, more comprehensively obtains the foundation scouring change information, realizes the accurate monitoring of the complex geological environment, and realizes the real-time compensation of the influence of environmental factors on the sensor by means of the optical fiber compensation unit and the self-calibration signal processor, effectively solves the problem of data drift of the optical fiber sensor, significantly improves the stability and reliability of the monitoring data, and reduces the workload and error of manual calibration.

[0018] 2. In the present application, under the cooperation of the contact type stable heat conduction assembly, the integrated data master control sends instructions to the servo motor through the signal regulation line, the servo motor starts, and the gear at the output end starts to rotate. Since the gear is engaged with the sliding inner tooth bar, the sliding inner tooth bar slides up and down in the fixed sleeve rod, thereby driving the connecting head and the mounting position seat to change the height position, and further driving the position relationship of the contact type stable heat conduction assembly. Then the electromagnetic guide rod acts to push the extended contact heat conduction column to move, and the outer expansion contact elastic column rotates around the elastic clamping part to change the contact position and area of the heat conduction phase change material end, so as to ensure efficient heat conduction of the key components at the new detection position. In addition, the support abutting movable rod adjusts the support angle and height in real time through the extension rod and universal joint, so as to ensure the overall stability of the device. Through the multi-dimensional monitoring system, intelligent self-calibration technology, multi-dimensional adjustment structure and efficient heat conduction design, the monitoring accuracy, stability and adaptability are significantly improved, so that more reliable data support can be provided for foundation stability evaluation and scouring change prediction in actual application, and the geological disaster risk is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the front view of the foundation scouring change optical fiber sensing recording device in the present application;

[0020] Figure 2 It is a structure schematic view of the contact type stable heat conduction assembly in the present application;

[0021] Figure 3 It is a structure schematic view of the contact type stable heat conduction assembly in the present application;

[0022] Figure 4 It is a structure schematic view of position adjusting assembly in a ground scouring and silting change optical fiber sensing recording device of the present application;

[0023] Figure 5 It is a structure schematic view of position adjusting assembly in a ground scouring and silting change optical fiber sensing recording device of the present application; Figure 2

[0024] Figure 6 It is a structure schematic view of position adjusting assembly in a ground scourting and silting change optical fiber sensing recording device of the present application;

[0025] Figure 7 It is a structure schematic view of position adjusting assembly in a ground scourting and silting change optical fiber sensing recording device of the present application; Figure 6

[0026] In the figure: 1, integrated data total control; 2, data classification controller; 3, integrated feedback line; 4, distributed line acquisition line; 5, protective shell; 6, support abutting movable rod; 7, signal regulation line; 8, annular electromagnetic guide rail; 9, conduction detection recording end; 10, position adjusting assembly; 101, fixed sleeve rod; 102, installation position seat; 103, connecting head; 104, sliding inner tooth gear rod; 105, gear; 106, servo motor; 11, contact type stable heat conduction assembly; 110, connecting plate; 111, let go slot plate; 112, elastic clamping part; 113, extended contact heat conduction phase change column; 114, electromagnetic guide rod; 115, outer expansion contact elastic column; 116, heat conduction phase change material end; 12, optical fiber recording control assembly; 120, detection rod body; 121, detection end; 122, detection surface; 123, heat dissipation guide groove; 124, distributed optical fiber sensing node; 125, multi-sensor data acquisition module; 126, optical fiber compensation unit; 127, integrated detection structure; 128, series feedback line; 129, self-calibration signal processor; 13, detection head; 14, cross-section contact end; 15, soft rubber sleeve. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Embodiment one: refer to Figure 1 - Figure 7 ​​As shown: a kind of ground scouring change optical fiber sensing recording device, including integrated data total control 1, data classification controller 2 and three groups and above protective shell 5, the inside bottom of protective shell 5 is equipped with annular electromagnetic guide rail 8, the top of annular electromagnetic guide rail 8 is equipped with position adjusting assembly 10, the top of position adjusting assembly 10 is equipped with contact type stable heat conduction assembly 11, the inside of protective shell 5 is equipped with optical fiber recording control assembly 12;

[0029] Optical fiber recording control assembly 12 includes integrated detection structure 127, integrated detection structure 127 is composed of strain sensor, temperature sensor and pressure sensor, the side line of integrated detection structure 127 is connected with series feedback line 128, the top of series feedback line 128 is connected with self-calibration signal processor 129, the bottom of series feedback line 128 is connected with optical fiber compensation unit 126, optical fiber compensation unit 126 is composed of stress reference optical fiber and pressureless reference optical fiber, the bottom of optical fiber compensation unit 126 is connected with multi-sensor data acquisition module 125, the bottom of multi-sensor data acquisition module 125 is connected with distributed optical fiber sensing node 124, the bottom of distributed optical fiber sensing node 124 is connected with detection end 121, the bottom of detection end 121 is connected with detection surface 122.

[0030] The top of detection surface 122 is connected with detection rod body 120, and heat dissipation flow guide groove 123 is formed in the surface of detection rod body 120, the bottom of detection surface 122 is connected with cross-section contact end 14, the bottom of cross-section contact end 14 is connected with detection head 13, and the top of detection head 13 is equipped with soft rubber sleeve 15.

[0031] The top of self-calibration signal processor 129 is connected with signal control line 7, the side end of signal control line 7 is connected with distributed line acquisition line 4, the top of distributed line acquisition line 4 is connected with integrated feedback line 3, and integrated feedback line 3 is connected with data classification controller 2.

[0032] In this embodiment, first, when the device needs to monitor the changes of the foundation scouring and silting, the staff first places the protective shell 5 in the target foundation area. After the device is formally put into operation, the detection head 13 is in close contact with the surface of the foundation through the cross-section contact end 14. The strain sensor can real-time sense the deformation information of the foundation. The temperature sensor monitors the temperature of the foundation and the surrounding environment. The pressure sensor measures the pressure of the water flow on the foundation. At the same time, the distributed optical fiber sensing nodes 124 collect strain and temperature data along the line through the optical fiber laid along the foundation, realizing continuous monitoring in a large range. After all the sensor data are pre-processed through filtering, amplification, etc. by the multi-sensor data acquisition module 125, they are transmitted to the self-calibration signal processor 129 through the series feedback line 128, so that the self-calibration signal processor 129 uses the built-in algorithm in combination with the reference data of the optical fiber compensation unit 126 to calibrate the collected data, eliminate the errors caused by environmental factors such as temperature and humidity, and improve the data accuracy.

[0033] Then, in the data transmission and analysis stage:

[0034] The calibrated data are transmitted to the data classification controller 2 through the signal regulation line 7, the distributed line collection line 4 and the integrated feedback line 3. The data classification controller 2 uses big data analysis and artificial intelligence technology to deeply mine and analyze the data. For example, through the established scouring and silting change prediction model, the current scouring and silting state of the foundation is judged, and the scouring and silting trend in the future period of time is predicted. Once data anomalies are found, the system immediately issues a warning signal.

[0035] Then, in the dynamic adjustment stage:

[0036] When the system detects that the scouring and silting state of the foundation changes significantly or the monitoring data is abnormal, the dynamic adjustment mechanism is triggered. The integrated data master control 1 sends instructions to the position adjustment assembly 10 through the signal regulation line 7. The position adjustment assembly 10 forms a circular track operation under the driving of the annular electromagnetic guide rail 8, so that the contact type stable heat conduction assembly 11 enhances the contact stability of the optical fiber recording control assembly 12 and balances the local temperature through the heat conduction function, ensuring the stability of the sensor working environment. In addition, the self-calibration signal processor 129 dynamically adjusts the working parameters of the sensor according to the real-time monitoring data, realizes self-adaptation to the changing environment, integrates strain, temperature and pressure sensors, and combines with the distributed optical fiber sensing network to build a multi-dimensional monitoring system, more comprehensively obtains the foundation scouring and silting change information, realizes accurate monitoring of complex geological environment, and realizes real-time compensation of the influence of environmental factors on the sensor by means of the optical fiber compensation unit 126 and the self-calibration signal processor 129, effectively solves the problem of data drift of the optical fiber sensor, significantly improves the stability and reliability of the monitoring data, and reduces the workload and errors of manual calibration.

[0037] Embodiment two: according to Figure 2 and Figure 4 As shown in the figure, the position adjusting assembly 10 includes a fixed sleeve rod 101, the bottom of which is arranged inside the annular electromagnetic guide rail 8, and a sliding inner toothed rod 104 is slidingly connected inside the fixed sleeve rod 101.

[0038] The top end of the sliding inner toothed rod 104 is connected with a connecting head 103, the top of which is connected with a mounting position seat 102, a servo motor 106 is arranged outside the fixed sleeve rod 101, the output end of the servo motor 106 is connected with a gear 105, and the gear 105 and the sliding inner toothed rod 104 are meshingly connected.

[0039] In this embodiment, when the system detects that the foundation scouring and silting state changes significantly or the monitoring data is abnormal, the dynamic adjustment mechanism is triggered, the integrated data master control 1 sends instructions to the servo motor 106 through the signal control line 7, the servo motor 106 is started, the gear 105 at the output end of the servo motor 106 starts to rotate, and since the gear 105 is meshingly connected with the sliding inner toothed rod 104, the sliding inner toothed rod 104 slides up and down in the fixed sleeve rod 101, thereby driving the connecting head 103 and the mounting position seat 102 to change the height position, and further driving the position relationship of the contact type stable heat conduction assembly 11.

[0040] Embodiment three: according to Figure 2 and Figure 3 As shown in the figure, the contact type stable heat conduction assembly 11 includes a connecting plate 110, which is tightly connected with the mounting position seat 102, and a gap plate 111 is tightly connected with the side end of the connecting plate 110, and elastic clamping parts 112 are symmetrically arranged at the bottom of the gap plate 111.

[0041] An electromagnetic guide rod 114 is arranged inside the mounting position seat 102, an extended contact heat conduction phase change column 113 is tightly connected with the side end of the electromagnetic guide rod 114, the extended contact heat conduction phase change column 113 is provided in a cross structure, outer expansion contact elastic columns 115 are contactingly connected with the left and right side end points of the extended contact heat conduction phase change column 113, and the side end of the outer expansion contact elastic column 115 is rotationally connected with the elastic clamping part 112.

[0042] The side end of the outer expansion contact elastic column 115 is connected with a heat conduction phase change material end 116, and the heat conduction phase change material end 116 and the extended contact heat conduction phase change column 113 are used to perform efficient contact type heat conduction treatment on the integrated detection structure 127, the optical fiber compensation unit 126 and the distributed optical fiber sensing node 124 inside the detection rod body 120 while ensuring the detection stability of the detection rod body 120.

[0043] The bottom center end of the protective shell 5 is provided with a conduction detection recording end 9, which is designed in an inverted conical frustum shape to increase the detection contact area, and the top end of the conduction detection recording end 9 is connected with the detection head 13.

[0044] The bottom periphery of the protective shell 5 is provided with a support abutting movable rod 6, which is composed of an extension rod, a universal joint and a support weight block.

[0045] In the embodiment, after the position adjusting assembly 10 operates, the electromagnetic guide rod 114 is actuated to push the extension contact heat conduction phase change column 113 to move, so that the elastic clamping part 112 limits the expansion contact elastic column 115, and in this process, the expansion contact elastic column 115 forms expansion or contraction adjustment, so that the expansion contact elastic column 115 can change the contact position and area of the heat conduction phase change material end 116, and ensure that the key components can still be efficiently heat-conducted at the new detection position.

[0046] The wiring diagram of the servo motor 106, the distributed optical fiber sensing node 124, the multi-sensor data acquisition module 125, the integrated detection structure 127 and the self-calibration signal processor 129 in the application belongs to the common knowledge in the field, and the working principle is a known technology, and the type is selected according to actual use. Therefore, the control mode and wiring arrangement of the servo motor 106, the distributed optical fiber sensing node 124, the multi-sensor data acquisition module 125, the integrated detection structure 127 and the self-calibration signal processor 129 are not explained in detail.

[0047] The use method and working principle of the device are as follows: firstly, before carrying out the foundation scouring and silting monitoring operation, the staff needs to place three or more protective shells 5 in the target foundation area, and after the placement is completed, the device is powered on, and after the device is formally operated, the detection head 13 is tightly combined with the foundation surface through the cross-section contact end 14, the strain sensor senses the micro deformation information of the foundation in real time based on the resistance strain principle, the temperature sensor monitors the temperature of the foundation and the surrounding environment by using the thermistor or thermocouple technology, the pressure sensor measures the pressure of the water flow on the foundation through the piezoelectric effect, the distributed optical fiber sensing node 124 collects strain and temperature data along the optical fiber laid along the foundation based on the Brillouin scattering and Raman scattering effects, realizes large-range and high-resolution continuous monitoring, all sensor data are transmitted to the multi-sensor data acquisition module 125, the module filters the data, removes noise interference, amplifies signal strength and improves data usability, and the pretreated data is transmitted to the self-calibration signal processor 129 through the series feedback line 128.

[0048] Then the self-calibration signal processor 129 uses the built-in adaptive filtering algorithm to calibrate the collected data in combination with the reference data of the optical fiber compensation unit 126, separates the errors caused by environmental factors such as temperature and humidity through multiple linear regression analysis, effectively improves the data accuracy, and transmits the calibrated data to the data classification controller 2 through the signal regulation line 7, the distributed line collection line 4 and the integrated feedback line 3 in a high-speed and stable communication protocol.

[0049] So that the data classification controller 2 uses big data analysis and artificial intelligence technology to deeply mine and analyze the transmitted data, judges the current scouring and silting state of the foundation according to a large amount of historical data and real-time monitoring data through the construction of a scouring and silting change prediction model based on a convolutional neural network, and predicts the scouring and silting trend in the future. Once the model detects data anomalies such as strain mutation and pressure exceeding threshold, the system immediately sends an early warning signal to remind the staff to pay attention.

[0050] When the system detects that the scouring and silting state of the foundation changes significantly or the monitoring data is abnormal, the dynamic adjustment mechanism is triggered, the integrated data master control 1 sends instructions to the servo motor 106 through the signal regulation line 7, the servo motor 106 starts, and the gear 105 at the output end of the servo motor 106 starts to rotate. Since the gear 105 is engaged with the sliding internal tooth rod 104, the sliding internal tooth rod 104 slides up and down in the fixed sleeve rod 101, thereby driving the connecting head 103 and the installation position seat 102 to change the height position, and adjusting the height of the contact type stable heat conduction assembly 11. At the same time, the annular electromagnetic guide rail 8 drives the position adjustment assembly 10 under the corresponding instructions to form a circular track motion, so that the contact type stable heat conduction assembly 11 moves after the position adjustment assembly 10 acts, the electromagnetic guide rod 114 is electrified and acts to push the extended contact heat conduction phase change column 113 to move, the outer expansion contact elastic column 115 rotates around the elastic clamping part 112 to change the contact position and area of the heat conduction phase change material end 116, and ensure that the integrated detection structure 127, the optical fiber compensation unit 126 and the distributed optical fiber sensing node 124 inside the detection rod body 120 can be efficiently contacted and heat-conducted in the new detection position, so as to ensure that each component works in a stable temperature environment. In addition, the support abutting movable rod 6 adjusts the support angle and height in real time through the telescopic rod and universal joint to ensure the overall stability of the device and reduce the monitoring error caused by foundation settlement or vibration.

[0051] Although the present application 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 replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

Claims

1. A ground heave change optical fibre sensing logging apparatus characterised by: Including integrated data total control (1), data classification controller (2) and three groups and above protective shell (5), the inside bottom of protective shell (5) is equipped with annular electromagnetic guide rail (8), the top of annular electromagnetic guide rail (8) is equipped with position adjusting assembly (10), the top of position adjusting assembly (10) is equipped with contact type stable heat conduction assembly (11), the inside of protective shell (5) is equipped with optical fiber record control assembly (12); The optical fiber record control assembly (12) includes an integrated detection structure (127), which is composed of a strain sensor, a temperature sensor and a pressure sensor, and a series feedback circuit (128) is connected to the side line of the integrated detection structure (127), a self-calibration signal processor (129) is connected to the top of the series feedback circuit (128), and an optical fiber compensation unit (126) is connected to the bottom of the series feedback circuit (128), the optical fiber compensation unit (126) is composed of a stress reference optical fiber and a pressure-free reference optical fiber, a multi-sensor data acquisition module (125) is connected to the bottom of the optical fiber compensation unit (126), and a distributed optical fiber sensing node (124) is connected to the bottom of the multi-sensor data acquisition module (125), a detection end (121) is connected to the bottom of the distributed optical fiber sensing node (124), and a detection surface (122) is connected to the bottom of the detection end (121).

2. The ground heave monitoring apparatus of claim 1, wherein: The top of the detection surface (122) is connected to a detection rod body (120), a heat dissipation guide groove (123) is formed on the surface of the detection rod body (120), the bottom of the detection surface (122) is connected to a cross-section contact end (14), the bottom of the cross-section contact end (14) is connected to a detection head (13), and the top of the detection head (13) is equipped with a soft rubber sleeve (15).

3. The ground heave monitoring apparatus of claim 1, wherein: The top of the self-calibration signal processor (129) is connected to a signal control circuit (7), the side end of the signal control circuit (7) is connected to a distributed line acquisition circuit (4), the top of the distributed line acquisition circuit (4) is connected to an integrated feedback circuit (3), and the integrated feedback circuit (3) is connected to the data classification controller (2).

4. The ground heave monitoring apparatus of claim 1, wherein: The position adjusting assembly (10) includes a fixed sleeve rod (101), the bottom of the fixed sleeve rod (101) is arranged in the inside of the annular electromagnetic guide rail (8), and the inside of the fixed sleeve rod (101) is slidably connected with a sliding inner toothed rod (104).

5. The ground heave monitoring apparatus of claim 4, wherein: The top of the sliding inner toothed rod (104) is connected with a connecting head (103), the top of the connecting head (103) is connected with a mounting position seat (102), the outside of the fixed sleeve rod (101) is arranged with a servo motor (106), the output end of the servo motor (106) is connected with a gear (105), and the gear (105) is engagedly connected with the sliding inner toothed rod (104).

6. The ground heave monitoring apparatus of claim 1, wherein: The contact type stable heat conduction assembly (11) comprises a connecting plate (110) which is fixedly connected with a mounting position seat (102), and the side end of the connecting plate (110) is fixedly connected with a gap plate (111), and the bottom end of the gap plate (111) is symmetrically provided with elastic clamping parts (112) on both sides.

7. The ground heave monitoring apparatus of claim 5, wherein: The inside of the mounting position seat (102) is provided with an electromagnetic guide rod (114), the side end of the electromagnetic guide rod (114) is fixedly connected with an extended contact heat conduction phase change column (113), the extended contact heat conduction phase change column (113) is provided in a cross structure, the left and right side ends of the extended contact heat conduction phase change column (113) are contactingly connected with outwardly expanding contact elastic columns (115), and the side end of the outwardly expanding contact elastic column (115) is rotatably connected with the elastic clamping part (112).

8. The ground heave monitoring apparatus of claim 7, wherein: The side end of the outwardly expanding contact elastic column (115) is connected with a heat conduction phase change material end (116), and the heat conduction phase change material end (116) and the extended contact heat conduction phase change column (113) are used for guaranteeing the detection stability of the detection rod body (120) and efficiently contactingly conducting heat to the integrated detection structure (127), the optical fiber compensation unit (126) and the distributed optical fiber sensing node (124) inside.

9. The ground heave monitoring apparatus of claim 1, wherein: The bottom center end of the protective shell (5) is provided with a conduction detection recording end (9) which is provided in an inverted conical frustum shape and is used for increasing the detection contact area, and the top end of the conduction detection recording end (9) is connected with the detection head (13).

10. The ground heave monitoring apparatus of claim 1, wherein: The bottom circumferential side of the protective shell (5) is provided with a support abutting movable rod (6) which is composed of an extension rod, a universal joint and a support weight block.

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