Underground water seepage and soil settlement integrated monitoring device

Abstract

The utility model provides an integrated monitoring device for underground water seepage and soil settlement. A waterproof box is fixed on the ground; the pre-buried pipeline is arranged in a soil layer below the waterproof box; the settlement monitoring module comprises a datum point device, a horizontal displacement sensor and a settlement sensor, and the horizontal displacement sensor and the settlement sensor are both fixed to the bottom of the pre-buried pipeline; the seepage monitoring module comprises an optical fiber seepage sensor and an adjustable connecting seat, and the optical fiber seepage sensor is mounted in the pre-buried pipeline through the adjustable connecting seat; the data collector is mounted in the waterproof box; the data processing storage module comprises a microprocessor and a storage chip, and the microprocessor is connected with the data collector through a signal line; the wireless communication module comprises a communication chip and a high-gain antenna. Through integrated monitoring and real-time acquisition, the device can timely discover underground water resource change and soil settlement and displacement conditions, and has the characteristics of high precision, integration, stability and reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the monitoring device in the field of civil engineering and geology monitoring, concretely relates to a device for comprehensive monitoring groundwater seepage and soil settlement. BACKGROUND

[0002] In modern engineering construction and geological environment protection, the monitoring of groundwater seepage and soil settlement is particularly important. Groundwater seepage not only affects the physical properties and stability of the soil, but also can lead to foundation settlement, foundation deformation and other engineering safety problems. At the same time, the settlement and displacement of the soil can also have a serious impact on the safety of buildings and other infrastructure. Traditional monitoring methods usually use conductivity sensors or pressure sensors to monitor groundwater seepage, and use physical scales or electronic displacement sensors to monitor soil settlement. However, these methods have the problems of low precision, inconvenience of installation, high maintenance cost, etc., and cannot meet the high precision and high reliability requirements of modern engineering monitoring. The existing groundwater seepage monitoring devices and soil settlement monitoring devices are usually designed independently, lack of integration, leading to inconvenience of data management and transmission. In addition, these devices have weak anti-electromagnetic interference ability and poor long-term stability, limiting their application in complex environments. Therefore, it is particularly important to design a high-precision, integrated and stable and reliable comprehensive monitoring device.

[0003] At present, there are some groundwater seepage and soil settlement monitoring devices on the market, but they generally have the following problems: (1) low precision, many traditional monitoring devices use resistance or capacitance sensors, which are easily affected by environmental factors during long-term use, resulting in decreased measurement precision; (2) low integration, existing monitoring devices are mostly designed in a discrete manner, i.e. the monitoring functions of groundwater seepage and soil settlement are realized by different devices, increasing the complexity and cost of installation and maintenance, and the data collection and transmission often require multiple independent devices and systems, which is not convenient for centralized management and real-time monitoring; (3) poor reliability, some monitoring devices have poor adaptability in harsh environments, such as high humidity and corrosive environments, where sensors and electronic components are easily damaged, resulting in shortened device life, and the reliability of the data transmission module is not high, which can cause data loss or transmission delay; (4) limited adaptability, existing devices have poor adaptability in different geological conditions, making it difficult to cope with complex geology and environmental changes, especially in complex environments such as high groundwater level and multi-layer soil structure, where traditional devices have poor monitoring performance. SUMMARY

[0004] In view of the above defects or deficiencies in the prior art, the utility model provides an integrated monitoring device for groundwater seepage and soil settlement, which realizes real-time and high-precision monitoring of groundwater seepage and soil settlement conditions in combination with high-performance data acquisition and processing and wireless transmission modules, discovers potential safety hazards in time, and provides strong data support for the safety and stability of projects.

[0005] The technical scheme adopted by the utility model to achieve the above purposes is:

[0006] An integrated monitoring device for groundwater seepage and soil settlement, comprising the following components:

[0007] A waterproof box is fixed to the ground.

[0008] A pre-embedded pipeline is arranged in the soil layer below the waterproof box and is in close contact with the soil.

[0009] A settlement monitoring module includes a reference point device, a horizontal displacement sensor and a settlement sensor. The reference point device is fixed in the foundation below the waterproof box, and the horizontal displacement sensor and the settlement sensor are both fixed at the bottom of the pre-embedded pipeline.

[0010] A seepage monitoring module includes a fiber optic seepage sensor and an adjustable connecting seat. The fiber optic seepage sensor is installed in the pre-embedded pipeline through the adjustable connecting seat and is in contact with the soil through the pre-embedded pipeline.

[0011] A data collector is installed inside the waterproof box and is connected to the settlement monitoring module and the seepage monitoring module through signal lines.

[0012] A data processing and storage module includes a microprocessor and a storage chip. The storage chip is located inside the microprocessor. The microprocessor is connected to the data collector through signal lines. A communication interface is provided on the microprocessor.

[0013] A wireless communication module includes a communication chip and a high-gain antenna. The communication chip is installed inside the waterproof box and connected to the communication interface. The high-gain antenna is installed on the top of the waterproof box and connected to the communication chip through signal lines.

[0014] A power module includes a solar panel, a charge management circuit and a rechargeable lithium battery. The solar panel is installed and fixed on the top of the waterproof box. The charge management circuit is connected below the solar panel. The rechargeable lithium battery is installed and fixed inside the waterproof box and connected to the charge management circuit and the microprocessor through wires.

[0015] Further, the diameter of the pre-embedded pipeline is 55 mm, and the bottom of the pre-embedded pipeline is filled with fine sand or gypsum.

[0016] Further, the optical fiber seepage sensor comprises an optical fiber sensor probe and a multimode optical fiber body fixedly connected with each other, and a through hole is arranged on the sidewall of the embedded pipeline; the optical fiber sensor probe is driven by the adjustable connecting seat to extend out of the through hole and contact the soil outside the embedded pipeline.

[0017] Further, a semi-closed rubber sleeve for preventing moisture from entering the embedded pipeline is arranged in the through hole on the sidewall of the embedded pipeline, and the optical fiber sensor probe extends out of the semi-closed rubber sleeve.

[0018] Further, the adjustable connecting seat comprises a fixed end and an adjusting end, wherein the fixed end is a rotary adjusting type elastic telescopic rod which is located in the embedded pipeline and is transversely connected with the embedded pipeline through screw threads, and the optical fiber seepage sensor contacts the fixed end; the adjusting end is located in the waterproof box and is connected with the fixed end through a chain, a knob is arranged on the adjusting end, and the knob is rotated to adjust the rotation of the elastic telescopic rod in the fixed end through the chain, so that the elastic force and the telescopic length of the elastic telescopic rod are adjusted; the optical fiber sensor probe is driven by the elastic telescopic rod to extend out of the through hole and contact the soil outside the embedded pipeline.

[0019] Further, a fixed support is arranged in the adjustable connecting seat, the fixed support is mounted on the inner wall of the embedded pipeline and corresponds to the position of the through hole, and the optical fiber seepage sensor is located in the fixed support.

[0020] Compared with the prior art, the underground water seepage and soil settlement integrated monitoring device has the following advantages:

[0021] 1. High-precision monitoring: the optical fiber grating seepage sensor in the patent can accurately measure the underground water seepage, has high resolution and strong anti-interference ability; the settlement and displacement sensor can accurately measure the vertical and horizontal displacement of the soil, and the data is reliable.

[0022] 2. Integrated design: the functions of underground water seepage, soil settlement and horizontal displacement monitoring are integrated in the patent, so that the number of equipment and the installation complexity are reduced; the modular structure design can be flexibly configured and expanded according to actual needs.

[0023] 3. Strong environmental adaptability: the waterproof box in the patent is made of high-strength waterproof and dustproof material, which ensures normal operation in high-humidity and dusty environments; all components in contact with the soil are made of corrosion-resistant materials, which prolongs the service life; it can work stably in a wide temperature range and adapt to different climate conditions.

[0024] 4. Stable data transmission: advanced wireless communication technologies (such as LoRa, NB-IoT, etc.) are used in the patent to realize real-time data transmission over long distances; at the same time, the low-power design prolongs the battery life and ensures long-term continuous monitoring.

[0025] 5, easy to install and use, the patent embedded pipeline and sensor design is reasonable, convenient to install, simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structural diagram of the underground water seepage and soil settlement integrated monitoring device is provided in the utility model;

[0027] Figure 2 For Figure 1 The enlarged schematic view of the A part in the middle;

[0028] Figure 3 The working principle schematic view of the utility model.

[0029] 1 - waterproof box, 2 - data collector, 3 - high gain antenna, 4 - solar panel, 5 - embedded pipeline, 6 - optical fiber seepage sensor, 6a - optical fiber sensor probe, 6b - multimode optical fiber main body, 7 - reference point device, 8 - settlement sensor, 9 - horizontal displacement sensor, 10 - adjustable connecting seat, 10a - fixed end, 10b - adjusting end, 11 - signal line, 12 - fine sand, 13 - semi-closed rubber sleeve, 14 - microprocessor, 15 - communication interface, 16 - communication chip, 17 - charging management circuit, 18 - rechargeable lithium battery, 19 - chain, 20 - fixed support. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model but not all the embodiments of the utility model. In order to facilitate description, only parts related to the utility model are shown in the drawings.

[0031] It should be noted that the underground water seepage and soil settlement integrated monitoring device provided in the embodiments needs to determine appropriate monitoring points and spacing according to the actual situation and monitoring requirements of the project before monitoring underground water seepage and soil settlement. The selection of monitoring points should consider factors such as the uniformity of foundation soil, the frequent area of underground water activity, etc. Usually, a monitoring point is arranged every 1 to 2 meters in the foundation to ensure the representativeness and accuracy of data.

[0032] The underground water seepage and soil settlement integrated monitoring device provided in the embodiments has the structure as shown in Figure 1 and Figure 2The waterproof box 1 is fixed on the ground; the waterproof box 1 is made of high-strength waterproof and dustproof material, which is used to protect the internal electronic components and prevent moisture and corrosion. The embedded pipeline 5 is arranged in the soil layer below the waterproof box and is in close contact with the soil; the diameter of the embedded pipeline 5 is 55 mm. During the construction of the embedded pipeline 5, the embedded pipeline is inserted into the selected drill hole, and the diameter of the drill hole should be slightly larger than the diameter of the embedded pipeline, so that the pipeline can be smoothly inserted. The bottom of the embedded pipeline is filled with fine sand or gypsum to ensure that the pipeline is in close contact with the soil. After the pipeline is inserted, the top of the pipeline is lightly tapped with a hammer to ensure that the embedded pipeline is vertical and stable. In this embodiment, the bottom of the embedded pipeline is filled with fine sand 12. The depth of the embedded pipeline is determined according to the monitoring requirements.

[0033] The settlement monitoring module includes a reference point device 7, a horizontal displacement sensor 9 and a settlement sensor 8. The reference point device 7 is fixed in the foundation below the waterproof box 1, which is used as the reference point for the settlement sensor 8 and the horizontal displacement sensor 9, to ensure the measurement accuracy and stability of the sensors. The horizontal displacement sensor 9 and the settlement sensor 8 are both fixed at the bottom of the embedded pipeline 5. The settlement sensor monitors the vertical displacement of the foundation soil, and the horizontal displacement sensor monitors the horizontal displacement of the foundation soil. These two sensors have high resolution and high stability, and can accurately measure the tiny displacement changes, thereby achieving high-precision monitoring of the settlement and displacement of the soil.

[0034] The seepage monitoring module includes a fiber optic seepage sensor 6 and an adjustable connector seat 10. The fiber optic seepage sensor 6 is installed in the embedded pipeline 5 through the adjustable connector seat 10 and is in contact with the soil through the embedded pipeline 5. The fiber optic seepage sensor 6 includes a fixed optical fiber sensor probe 6a and a multi-mode optical fiber body 6b connected to each other. The optical fiber is a multi-mode optical fiber with a diameter of 125 μm, and the outer layer is wrapped with corrosion-resistant material. The length is determined according to the monitoring depth requirement. The sidewall of the embedded pipeline 5 is provided with a through hole, and the optical fiber sensor probe 6a is driven by the adjustable connector seat 10 to extend out of the through hole and contact the soil outside the embedded pipeline. A semi-enclosed rubber sleeve 13 is arranged in the through hole of the sidewall of the embedded pipeline to prevent water from entering the inside of the embedded pipeline. The optical fiber sensor probe 6a extends out of the semi-enclosed rubber sleeve 13. The semi-enclosed rubber sleeve 13 can ensure the sealing of the inside of the embedded pipeline and avoid the influence of the moisture in the external soil on data transmission. The fiber optic seepage sensor detects the seepage of underground water through the reflection wavelength change of the fiber Bragg grating (FBG) probe. Its working principle is that when the seepage of underground water causes the environmental refractive index around the fiber Bragg grating to change, the reflection wavelength also changes. There is a linear relationship between this change and the seepage of underground water. By accurately measuring the change of the reflection wavelength, high-precision monitoring of the seepage of underground water can be realized.

[0035] The adjustable connector seat 10 includes a fixed end 10a and an adjusting end 10b, as shown in Figure 2The fixed end 10a is a rotary adjustable elastic telescopic rod, which is located in the embedded pipeline 5 and is connected with the embedded pipeline transversely through threads, and the optical fiber seepage sensor 6 is in contact with the fixed end. The adjusting end 10b is located in the waterproof box 1 and is connected with the fixed end 10a through the chain 19. The adjusting end 10b is provided with a knob. After the knob is rotated, the rotation of the elastic telescopic rod in the fixed end is adjusted through the chain, and then the elastic force and the telescopic length of the elastic telescopic rod are adjusted. The optical fiber sensor probe 6a is pushed out of the semi-closed rubber sleeve 13 under the pushing of the elastic telescopic rod and is in contact with the soil outside the embedded pipeline 5. The adjustable connecting seat is also provided with a fixed support 20. The fixed support 20 is installed on the inner wall of the embedded pipeline 5 and corresponds to the position of the through hole. The optical fiber seepage sensor 6 is located in the fixed support 20 as a whole. The fixed support 20 is used to ensure the stability of the optical fiber seepage sensor.

[0036] The data collector 2 is installed in the waterproof box and is connected with the settlement monitoring module and the seepage monitoring module through the signal line 11. The data collector 2 is responsible for collecting data from the optical fiber seepage sensor and the settlement sensor, temporarily storing the data through the internal storage chip, and transmitting the data to the data processing and storage module through the signal line 11.

[0037] The data processing and storage module is located in the waterproof box 1 and includes a microprocessor 14 and a storage chip. The storage chip is located in the microprocessor 14. The microprocessor 14 is connected with the data collector 2 through the signal line 11. The microprocessor 14 is provided with a communication interface 15. In this embodiment, the microprocessor is embedded with conventional data processing software in the field. The microprocessor can analyze and process the received groundwater seepage data and soil settlement data to generate a monitoring report. The microprocessor is embedded with a data processing algorithm, which can perform data correction, filtering, trend analysis and other processing to ensure the accuracy and reliability of the data. The microprocessor can also set an alarm threshold as needed. When the monitoring data exceeds the threshold, the system automatically sends an alarm signal to remind relevant personnel to take timely measures. The above software, data processing algorithm and over-limit alarm are all conventional contents in the field, and will not be described in detail here.

[0038] The wireless communication module includes a communication chip 16 and a high-gain antenna 3. The communication chip 16 is installed in the waterproof box 1 and is connected with the communication interface 15. The high-gain antenna 3 is installed on the top of the waterproof box 1 and is connected with the communication chip 16 through the signal line. The wireless communication module realizes the long-distance wireless transmission of data through the communication chip and the high-gain antenna. The module supports multiple low-power wireless communication technologies such as LoRa, NB-IoT, etc. The wireless communication module transmits the processed data to the remote monitoring center in real time through the high-gain antenna, which is convenient for real-time monitoring and data analysis.

[0039] The power module comprises a solar panel 4, a charge management circuit 17 and a rechargeable lithium battery 18, and provides continuous and stable power for the device.

[0040] The working principle of the integrated monitoring device for groundwater seepage and soil settlement provided by the utility model is shown in the figure. Figure 3 The reference point device is fixed in the foundation, and the settlement sensor and the horizontal displacement sensor take the reference point device as the reference to monitor the vertical and horizontal displacement of the soil respectively. The data collector is responsible for collecting and storing data from the fiber seepage sensor, the settlement sensor and the horizontal displacement sensor, and transmitting the data to the microprocessor through the signal line, and the microprocessor processes and stores the data, and then transmits the data to the remote monitoring center through the wireless communication module.

Claims

1. An integrated monitoring device for groundwater seepage and soil settlement, characterized in that: The utility model relates to a kind of underground water and seepage monitoring system, including the following components: Waterproof box is fixed on the ground; Pre-buried pipeline is arranged in the soil layer below waterproof box, and is closely contacted with soil; Settlement monitoring module includes reference point device, horizontal displacement sensor and settlement sensor, reference point device is fixed in the foundation below waterproof box, horizontal displacement sensor and settlement sensor are all fixed in the bottom of pre-buried pipeline; Seepage monitoring module includes optical fiber seepage sensor and adjustable connecting seat, optical fiber seepage sensor is installed in pre-buried pipeline through adjustable connecting seat, and is contacted with soil through pre-buried pipeline; Data collector is installed in the inside of waterproof box, and is connected with settlement monitoring module and seepage monitoring module through signal line; Data processing and storage module includes microprocessor and storage chip, storage chip is located in the inside of microprocessor, microprocessor is connected with data collector through signal line, and communication interface is arranged on microprocessor; Wireless communication module includes communication chip and high-gain antenna, wherein communication chip is installed in the inside of waterproof box and is connected with communication interface, high-gain antenna is installed on the top of waterproof box and is connected with communication chip through signal line; Power module includes solar panel, charging management circuit and rechargeable lithium battery, solar panel is installed and fixed on the top of waterproof box, charging management circuit is connected below solar panel, rechargeable lithium battery is installed and fixed in the inside of waterproof box and is connected with charging management circuit and microprocessor through wire. 2.The device according to claim 1, characterized in that: The diameter of the pre-buried pipeline is 55mm, and the bottom of the pre-buried pipeline is filled with fine sand or gypsum. 3.The device according to claim 1, characterized in that: The optical fiber seepage sensor includes a fixedly connected optical fiber sensor probe and a multi-mode optical fiber body, the sidewall of the pre-buried pipeline is provided with a through hole, and the optical fiber sensor probe is extended out of the through hole under the driving action of the adjustable connecting seat and contacts the soil outside the pre-buried pipeline.

4. The device according to claim 3, characterized in that: A semi-enclosed rubber sleeve is arranged in the through hole of the sidewall of the pre-buried pipeline to prevent moisture from entering the inside of the pre-buried pipeline, and the optical fiber sensor probe is extended out of the semi-enclosed rubber sleeve. 5.The device according to claim 3, characterized in that: The adjustable connecting seat includes a fixed end and an adjusting end, wherein the fixed end is a rotatable adjustable elastic telescopic rod, which is located in the pre-buried pipeline and is connected with the pre-buried pipeline through threads, and the optical fiber seepage sensor contacts the fixed end; the adjusting end is located in the waterproof box and is connected with the fixed end through a chain, a knob is arranged on the adjusting end, and the rotation of the elastic telescopic rod in the fixed end is adjusted through the chain by rotating the knob, so as to adjust the elastic force and the telescopic length of the elastic telescopic rod, and the optical fiber sensor probe is extended out of the through hole under the pushing of the elastic telescopic rod and contacts the soil outside the pre-buried pipeline. 6.The device according to claim 5, characterized in that: A fixed support is further arranged in the adjustable connecting seat, the fixed support is installed on the inner wall of the pre-buried pipeline and corresponds to the position of the through hole, and the optical fiber seepage sensor is located in the fixed support as a whole.

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