A high-cold mountainous slope section cutting type frozen soil roadbed temperature field monitoring system

Abstract

The utility model discloses a kind of high-cold mountainous area slope section cutting type frozen soil roadbed temperature field monitoring systems, including connected information monitoring unit and information transmission unit, information monitoring unit includes several temperature sensors, temperature sensor is set to roadbed interior;Temperature sensor is connected by data acquisition line, several data acquisition lines are summarized as data acquisition bus, data acquisition bus is connected to information transmission unit;Temperature sensor and information transmission unit are jointly connected to battery;Battery is connected with solar panel by solar power supply line.The utility model is aimed at remote high-cold mountainous area slope section cutting type frozen soil roadbed frost heaving, thawing and sinking disease condition, temperature sensor is set after drilling in roadbed frozen soil layer lower part, to monitor roadbed lower part temperature field situation, to judge frost heaving, deformation disease degree.Can monitor roadbed temperature field change situation, according to human frozen soil upper limit change situation and active layer freeze-thaw cycle degree to carry out disease classification early warning to roadbed.

Description

Technical Field

[0001] This utility model belongs to the field of roadbed engineering monitoring technology, specifically relating to a temperature field monitoring system for frozen soil roadbeds in sloping sections of high-altitude and cold mountainous areas. Background Technology

[0002] As engineering construction increasingly extends into high-altitude and cold regions, a large number of road projects are being carried out in permafrost areas. Due to the widespread distribution of permafrost, highway construction cannot avoid this challenge. Although road construction in permafrost regions has a long history, frost heave and thaw settlement deformation remain serious problems. To address these issues in permafrost highways, establishing an intelligent monitoring system for the roadbed temperature field at typical cross-sections is crucial for ensuring the long-term performance of the roadbed. Complete roadbed temperature field monitoring systems are widely used in practical engineering projects, their main function being to continuously provide technical personnel with roadbed temperature field data during construction and operation, demonstrating significant practical value.

[0003] Regarding the above description of temperature field monitoring systems in the field of roadbed engineering in cold regions, the following problems remain unresolved: 1. The monitoring system is significantly limited in areas without signal coverage, and most data is collected manually; 2. Studies on the temperature field of wide roadbeds in high-altitude cold mountainous areas mostly rely on numerical analysis, with little field monitoring data, and field monitoring of wide cut roadbeds on slopes is even rarer; 3. When deploying temperature sensors, it is easy for the sensors not to be in close contact with the soil, which can easily lead to large errors; 4. When deploying after excavation, the systems are easily damaged during construction, making protection difficult; 5. In high-altitude cold regions, the monitoring system is difficult to maintain and repair, and is easily abandoned and wasted. Utility Model Content

[0004] The purpose of this utility model is to provide a temperature field monitoring system for frozen soil subgrade in sloping sections of high-altitude and cold mountainous areas, so as to overcome the shortcomings of existing monitoring systems that do not have on-site monitoring capabilities for wide-slope cut-type subgrades, and that temperature sensors are difficult to adhere closely to the soil and are difficult to maintain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A temperature field monitoring system for permafrost subgrade in a sloping section of a high-altitude cold mountainous area includes an information monitoring unit and an information transmission unit connected together. The information monitoring unit includes several temperature sensors, which are installed inside the subgrade.

[0007] All the temperature sensors are connected via data acquisition lines, and several data acquisition lines are combined into a data acquisition bus, which is connected to the information transmission unit. The temperature sensors and the information transmission unit are both connected to the battery. The battery is connected to a solar panel via a solar power supply line.

[0008] Furthermore, the information transmission unit includes a data cable connected to a data acquisition bus, the data cable being connected to a data acquisition unit via a system bus, the data acquisition unit being connected to a wireless transmitter via an information transmission data line, and the wireless transmitter being connected to a signal antenna via a signal transmission data line.

[0009] Furthermore, the temperature sensor, data cable, data acquisition unit, and wireless transmitter are all connected to a battery; the battery is connected to a solar panel via a solar power supply line.

[0010] Furthermore, the roadbed is equipped with nine boreholes, located on the left high slope, snow accumulation platform, left shoulder, right shoulder, left middle road, right middle road, central divider, right slope toe, and below the natural ground surface; the depth of each borehole is 10-15m; the temperature sensors distributed in the boreholes are denser at the top and sparser at the bottom.

[0011] Furthermore, the data cable, data collector, wireless transmitter, and battery are all housed in a sealed enclosure located at the roadbed slope.

[0012] Furthermore, the solar panel is mounted on top of the sealed casing via a bracket.

[0013] Furthermore, the data acquisition bus is externally provided with a PVC pipe, which is filled with sand and then covered with a covering thickness of not less than 15cm.

[0014] Furthermore, the battery is placed at the bottom of the sealed chassis, and an isolation device is provided between the battery and the sealed chassis.

[0015] Furthermore, the temperature sensor is model number YTBD0101.

[0016] Furthermore, the model number of the data cable is YTZD0308, the model number of the data collector is YTZD01, and the model number of the wireless transmitter is YTZD02.

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

[0018] This utility model discloses a temperature field monitoring system for permafrost subgrade in sloping sections of roadbeds in high-altitude and cold mountainous areas. Targeting frost heave and thaw settlement issues in permafrost subgrades on sloping sections of roadbeds in remote high-altitude and cold mountainous areas, the system installs temperature sensors after drilling holes in the lower part of the permafrost layer to monitor the temperature field in the lower part of the roadbed, thereby assessing the degree of frost heave and deformation. The system can monitor changes in the roadbed temperature field and classify and warn of roadbed defects based on changes in the upper limit of man-made permafrost and the degree of freeze-thaw cycles in the active layer. This system can monitor the temperature of the permafrost layer in the lower part of the roadbed in real time, ensuring timely data collection even under weak signal conditions, and can continuously monitor during the roadbed construction and operation periods.

[0019] Furthermore, by connecting a temperature sensor to a data cable, automatic data collection can be achieved, and data can be transmitted wirelessly, thus saving manpower and enabling rapid analysis and judgment.

[0020] Furthermore, when the temperature sensor is installed in the borehole, it is slowly filled with on-site raw materials and fine sand, and then vibrated with a long rod to ensure that the temperature sensor is in close contact with the surrounding high-temperature frozen soil layer, so as to accurately measure the temperature change of the frozen soil inside the roadbed.

[0021] Furthermore, all the data acquisition lines are organized into a data acquisition bus. The bus is initially protected by filling PVC pipe with sand, and then the PVC pipe is covered with sand for protection, with a covering thickness of not less than 15cm.

[0022] Furthermore, the entire system is powered and stored by a solar power system, enabling it to operate for several days even on cloudy days. At the same time, solar energy, as a clean energy source, realizes the utilization of green and clean energy. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a temperature field monitoring system for frozen soil subgrade in a high-altitude mountainous area.

[0024] Figure 2 This is a schematic diagram of the temperature sensor layout in an embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of the data collection box layout of this utility model.

[0026] Figure 4 This is a schematic diagram of the information transmission unit layout of this utility model.

[0027] In the diagram, 1. Information monitoring unit; 2. Information transmission unit; 3. Roadbed; 8. Temperature sensor; 9. Data acquisition line; 10. Sealed enclosure; 11. Data acquisition bus; 12. Solar panel; 13. Battery; 14. Data cable; 15. Data acquisition device; 16. Wireless transmitter; 17. Signal antenna; 18. Concrete pier; 19. System bus; 20. Solar power supply line; 21. Battery power supply line; 22. Information transmission data line; 23. Signal transmission data line. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0037] This utility model provides a temperature field monitoring system for roadbeds in cut-type permafrost on slopes in high-altitude and cold mountainous areas. It is applicable to harsh geological conditions such as high-altitude and cold mountainous areas and is suitable for monitoring and early warning of frost heave and thaw settlement diseases in roadbeds in cut-type permafrost on slopes.

[0038] See Figures 1 to 2The entire system is divided into two parts, including information monitoring unit 1 and information transmission unit 2. Information monitoring unit 1 is located at the selected slope section of the frozen soil subgrade, and information transmission unit 2 is located at the open area of ​​the subgrade slope.

[0039] The information monitoring unit 1 includes several temperature sensors 8, data acquisition lines 9, and a data acquisition bus 12. The temperature sensors 8 are located inside the roadbed 3. All the temperature sensors 8 are connected through the data acquisition lines 9, and the several data acquisition lines 9 are combined into a data acquisition bus 11, which is connected to the information transmission unit 2. The data acquisition bus 11 is used to centrally transmit the monitoring data from multiple data acquisition lines 9. The temperature sensors 8 and the information transmission unit 2 are connected to a storage battery 13. The storage battery 13 is connected to a solar panel 12 through a solar power supply line 20. The solar panel 12 is used to convert solar energy into electrical energy and transmit it to the storage battery 13 through the solar power supply line 20 for storage.

[0040] See Figures 3 to 4 In some preferred embodiments of this utility model, the information transmission unit 2 includes a data aggregation unit 14 connected to the data acquisition bus 11. The data aggregation unit 14 is used to aggregate and integrate the scattered data transmitted by the data acquisition bus 11. The data aggregation unit 14 is connected to a data acquisition unit 15 through the system bus 19. The data acquisition unit 15 is used to store and perform preliminary processing on the integrated monitoring data. The data acquisition unit 15 is connected to a wireless transmitter 16 through an information transmission data line 22. The wireless transmitter 16 is used to convert the processed monitoring data into wireless signals. The wireless transmitter 16 is connected to a signal antenna 17 through a signal transmission data line 23. The signal antenna 17 is used to enhance the transmission strength and transmission distance of the wireless signal.

[0041] Specifically, the temperature sensor 8 is model YTBD0101, the data cable 9 is model YTZD0308, the data acquisition device 15 is model YTZD01, and the wireless transmitter 16 is model YTZD02.

[0042] In some preferred embodiments of this utility model, the roadbed 3 is provided with 9 boreholes, which are respectively located on the left high slope, snow accumulation platform, left shoulder, right shoulder, left middle road, right middle road, central divider, right slope toe and under the natural ground surface; the depth of each borehole is 10~15m; the temperature sensors 8 distributed in the boreholes are denser at the top and sparser at the bottom;

[0043] In this embodiment, the drilling depth is 12m. A temperature sensor 8 is installed every 1m at a position 6m above the borehole depth, and every 2m at a position 6m below the borehole depth, for a total of 9 temperature sensors 8 in one borehole. The location and depth of the boreholes can be adjusted according to specific engineering conditions. Preferably, the temperature sensors 8 are installed in the boreholes, requiring slow filling with on-site materials and fine sand, followed by vibration with a long rod to ensure close contact between the temperature sensors 8 and the surrounding roadbed 3. More preferably, all data acquisition lines 9 are organized into a data acquisition bus 11, which is initially protected by filling PVC pipes with sand, and then covered with sand to a thickness of not less than 15cm.

[0044] See Figure 1 and Figure 4 The information transmission unit 2 is fixed to a concrete pier 18 for stability and to prevent damage from strong winds. Specifically, the sealed enclosure 10 is bolted to the concrete pier 18. The solar panel 12 is fixed to the upper part of the sealed acquisition box 10 by a bracket, and the battery 13 is placed inside the sealed enclosure 10, with foam padding underneath to ensure the battery is dry. The solar panel 12 is connected to the battery 13 via a solar power supply line 20, and the battery 13 is connected to all electrical equipment in the system via a battery power supply line 21. The battery 13 transmits electrical energy to each temperature sensor 8 via a data acquisition line 9. The solar panel 12 and the battery 13 enable power supply to the equipment in high-altitude, cold mountainous areas where there is a lack of power.

[0045] A method for using a composite monitoring system for frozen soil subgrade in sloping sections of high-altitude and cold mountainous areas, specifically including:

[0046] Site selection and installation of information monitoring unit 1: Based on geological data and field investigation, monitoring sections for the sloping cut-type frozen soil subgrade are arranged, generally at locations with higher slopes and more severe water accumulation in the subgrade after excavation. When drilling underground, boreholes with retaining walls are used as much as possible to avoid borehole collapse due to frozen soil thawing. Nine boreholes are set up in the subgrade, located at the left high slope, snow platform, left shoulder, right shoulder, left center, right center, central divider, right slope toe, and below the natural ground surface, respectively, to represent the temperature changes of the underlying frozen soil as much as possible. The borehole depth is generally determined according to the upper and lower limits of the natural frozen soil, generally 10-15m, and the arrangement of the boreholes follows the principle of denser density at the top and sparser density at the bottom.

[0047] Location selection and installation of information transmission unit 2:

[0048] Information transmission unit 2 is located in an open area on the roadbed slope. A mounting bracket is placed on a precast concrete pier 15, and a sealed enclosure 10 is erected. Solar panels 12 are assembled, and their brackets are installed on the sealed enclosure 10. A storage battery 13 is installed, and various wires are connected to the data transmitter 14, data collector 15, and wireless transmitter 16. The signal antenna 17 is fixed on the sealed enclosure 10. The equipment's data acquisition and transmission system only uses power during data acquisition; otherwise, it remains in a dormant state, thus reducing power consumption. In extreme weather conditions with no sunlight, the battery can provide power for approximately two months. When the battery is depleted, the system enters a dormant state and automatically restarts when the solar power charges the battery to a certain level, thus resolving power shortage issues. Furthermore, the battery should be replaced after one to two years of use.

[0049] On-site monitoring data is collected by the data acquisition box and sent to the information transmission unit 2. In view of the inconvenient transportation and poor signal in high-altitude and cold mountainous areas, the data is transmitted through the Beidou satellite system, which can realize long-distance information collection and transmission, facilitate data acquisition and analysis at any time, and can collect information data at the same time during construction and operation.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature field monitoring system for frozen soil subgrade in sloping sections of high-altitude and cold mountainous areas, characterized in that, It includes a connected information monitoring unit (1) and an information transmission unit (2). The information monitoring unit (1) includes several temperature sensors (8), which are installed inside the roadbed (3). All the temperature sensors (8) are connected by data acquisition lines (9), and several data acquisition lines (9) are combined into a data acquisition bus (11), which is connected to the information transmission unit (2); the temperature sensors (8) and the information transmission unit (2) are connected to the storage battery (13); the storage battery (13) is connected to a solar panel (12) through a solar power supply line (20).

2. The temperature field monitoring system for frozen soil subgrade in sloping sections of high-altitude cold mountainous areas according to claim 1, characterized in that, The information transmission unit (2) includes a data cable (14) connected to the data acquisition bus (11). The data cable (14) is connected to a data acquisition unit (15) via a system bus (19). The data acquisition unit (15) is connected to a wireless transmitter (16) via an information transmission data line (22). The wireless transmitter (16) is connected to a signal antenna (17) via a signal transmission data line (23).

3. The temperature field monitoring system for frozen soil subgrade in sloping sections of high-altitude cold mountainous areas according to claim 2, characterized in that, The temperature sensor (8), data cable (14), data acquisition unit (15) and wireless transmitter (16) are all connected to a storage battery (13); the storage battery (13) is connected to a solar panel (12) via a solar power supply line (20).

4. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The roadbed (3) is equipped with 9 boreholes, located on the left high slope, snow platform, left shoulder, right shoulder, left middle road, right middle road, central divider, right slope toe and under the natural surface; the depth of each borehole is 10~15m; the temperature sensors (8) distributed in the boreholes are denser at the top and sparser at the bottom.

5. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The data cable (14), data collector (15), wireless transmitter (16) and battery (13) are all housed in a sealed enclosure (10), which is located on the roadbed slope.

6. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The solar panel (12) is mounted on top of the sealed housing (10) via a bracket.

7. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The data acquisition bus (11) is provided with a PVC pipe, which is filled with sand and then covered with a covering thickness of not less than 15cm.

8. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The battery (13) is placed at the bottom inside the sealed enclosure (10), and an isolation device is provided between the battery (13) and the sealed enclosure (10).

9. A temperature field monitoring system for frozen soil subgrade in sloping sections of high-altitude and cold mountainous areas according to claim 1, characterized in that, The temperature sensor (8) is model YTBD0101.

10. A temperature field monitoring system for frozen soil subgrade in a sloping section of a high-altitude cold mountainous area according to claim 2, characterized in that, The data cable (14) is model YTZD0308, the data collector (15) is model YTZD01, and the wireless transmitter (16) is model YTZD02.

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