Automatic monitoring system for long-term settlement of deep soft foundation dike

The long-term settlement automatic monitoring system for deep soft foundation embankments, combined with equipment such as GNSS instruments, array displacement gauges, and pore water pressure gauges, has achieved high-precision, all-weather automated monitoring of deep soft foundation embankments. This solves the problems of low monitoring accuracy and automation in existing technologies and improves the effectiveness of embankment safety management.

CN223636850UActive Publication Date: 2025-12-05POWERCHINA HUADONG ENG CORP LTD +2
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Patent Information

Application Number
CN202520215970.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-11
Publication Date
2025-12-05
Estimated Expiration
2035-02-11

AI Technical Summary

Technical Problem

Existing monitoring technologies for deep soft soil foundation levees have low levels of automation, poor measurement accuracy and universality, and cannot achieve continuous monitoring around the clock, thus affecting levee safety.

Method used

An automatic long-term settlement monitoring system for deep soft soil embankments is adopted, which includes a power supply module, a monitoring module, an automated acquisition module, a data transmission module, and a data post-processing module. It utilizes GNSS instruments, array displacement gauges, water level gauges, and pore water pressure gauges for multi-faceted monitoring, and combines photovoltaic power generation and wireless communication to achieve automated data acquisition and transmission.

Benefits of technology

It achieves high-precision, all-weather, multi-directional monitoring, enabling three-dimensional analysis of the long-term settlement of deep soft foundation embankments, meeting the needs of long-term automated monitoring, and improving the accuracy and stability of embankment safety management.

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Abstract

The utility model provides an automatic monitoring system for long-term settlement of a deep soft foundation dike, which is applied to the deep soft foundation dike and comprises a power supply module, a monitoring module, an automatic acquisition module, a data transmission module and a data post-processing module, the monitoring module comprises a GNSS instrument, an array displacement meter, a water level gauge and a pore water pressure gauge; a slope shoulder of a deep and thick soft foundation dike is drilled by a drilling machine to form an inclinometer-water level pipe hole and a pore water pressure gauge hole, an array displacement meter and a water level gauge are mounted in the inclinometer-water level pipe hole, and a pore water pressure gauge is mounted in the pore water pressure gauge hole; the automatic acquisition module receives an electric signal from the monitoring module, converts the electric signal into a digital signal, stores the digital signal and sends the digital signal to the data transmission module, and the data transmission module is in communication connection with the data post-processing module. According to the utility model, long-term all-weather and automatic monitoring can be carried out after dike soft foundation construction, the manpower cost of a traditional monitoring mode is greatly saved, and errors of monitoring data caused by manual operation are reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic geotechnical, specifically is a deep soft foundation embankment settlement long -term automatic monitoring system. BACKGROUND

[0002] The safety of deep soft foundation embankment is a big problem in the field of hydraulic geotechnical. In seawall engineering, impoundment flood storage area embankment construction engineering, often face the complex geological conditions of deep soft foundation, and deep soft foundation treatment is difficult and the effect is poor, and the settlement deformation of embankment construction and operation period poses a great test to embankment safety.

[0003] At present, embankment safety monitoring is mainly executed manually, and deep settlement monitoring of embankment is carried out by settlement plate method or magnetic ring type settlement meter method. The settlement plate method is laborious and time -consuming, and the observation precision is not high and often interferes with construction machinery, and the monitoring precision is greatly affected by human factors. The magnetic ring type settlement meter method has low automation degree and large data error. The current deep soft foundation settlement monitoring instrument has poor measurement precision, performance and universality, low automation degree and cannot be monitored continuously all day long. The safety of deep soft foundation embankment is influenced by many aspects, such as underground water level, pore water pressure and horizontal displacement, and the safety of deep soft foundation needs to be evaluated comprehensively.

[0004] Therefore, the existing monitoring technology cannot meet the requirements of long -term monitoring of deep soft foundation embankment, and the development of high -precision, multi -aspect and automatic monitoring system is the inevitable requirement of strengthening the safety management of water conservancy project and the only way to implement the high -quality development of water conservancy in the new stage. UTILITY MODEL CONTENT

[0005] In order to overcome the defects existing in the prior art, a deep soft foundation embankment long -term settlement automatic monitoring system is provided to realize the automation of monitoring technology and all -weather, so as to comprehensively and multi -directionally evaluate the deep settlement deformation result of deep soft foundation embankment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application discloses a long-term settlement automatic monitoring system for deep soft foundation embankment, which is applied to deep soft foundation embankment and comprises a power supply module, a monitoring module, an automatic acquisition module, a data transmission module and a data post-processing module, wherein the power supply module is connected with the monitoring module, the automatic acquisition module and the data transmission module; the monitoring module comprises a GNSS instrument, an array displacement meter, a water level gauge and a pore water pressure gauge; the deep soft foundation embankment is provided with a drilling machine for drilling a hole for the inclinometer-water level pipe and the pore water pressure gauge; the array displacement meter and the water level gauge are arranged in the hole for the inclinometer-water level pipe, and the pore water pressure gauge is arranged in the hole for the pore water pressure gauge; the automatic acquisition module receives electrical signals from the monitoring module, converts the electrical signals into digital signals, stores the digital signals and sends the digital signals to the data transmission module; and the data transmission module is connected with the data post-processing module.

[0008] Further, the power supply module comprises a photovoltaic power generation panel and a storage battery connected with the photovoltaic power generation panel.

[0009] Further, the automatic acquisition module is a multifunctional data acquisition instrument; the data transmission module is a wireless intelligent transmission terminal; and the data post-processing module is a PC.

[0010] Further, the GNSS instrument is a ubiquitous GNSS receiver based on the combination of the Beidou GNSS positioning technology and the MEMS sensor technology.

[0011] Further, the array displacement meter is an ADM series flexible inclinometer which is composed of high-strength array fixed-length measurement units.

[0012] Further, the pore water pressure gauge is a vibrating string type seepage pressure gauge which is made of stainless steel.

[0013] Further, the multifunctional data acquisition instrument has 8 channels, and can be expanded to 16 or 32 channels according to the engineering site requirement; and the connected sensor types include vibrating string type, current type, voltage type and RS485 digital sensor.

[0014] Further, the wireless intelligent transmission terminal realizes wireless communication with the PC through cellular data or Bluetooth, or realizes wired communication with the PC through a USB / RS232 / RS485 communication mode.

[0015] Further, a concrete pouring equipment base is adopted, and a column of the GNSS instrument is arranged on the equipment base; and the power supply module, the multifunctional data acquisition instrument and the wireless intelligent transmission terminal are all arranged on the column of the GNSS instrument.

[0016] Further, a water level gauge is connected to the lower end of the last array displacement meter.

[0017] The long-term settlement automatic monitoring system for deep soft foundation embankment has the following advantages:

[0018] The deep soft foundation embankment long-term settlement automatic monitoring system has the characteristics of high precision, strong stability and low power consumption, does not need external power supply, can perform long-term unattended monitoring according to a pre-set monitoring frequency, can monitor the surface and interior of the soft foundation embankment, can stereoscopically analyze the long-term settlement of the soft foundation embankment, and meets the long-term automatic monitoring requirement of the deep soft foundation embankment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a layout schematic view of the deep soft foundation embankment long-term settlement automatic monitoring system.

[0020] Figure 2 It is a layout structure schematic view of the inclinometer-water level pipe in the utility model.

[0021] Figure 3 It is a layout structure schematic view of the pore water pressure pipe in the utility model.

[0022] Figure 4 It is a working principle flow chart of the deep soft foundation embankment long-term settlement automatic monitoring system.

[0023] In the drawings:

[0024] 1-1—photovoltaic power generation plate, 1-2—storage battery;

[0025] 2—GNSS instrument;

[0026] 3—multifunctional data acquisition instrument;

[0027] 4—wireless intelligent transmission terminal;

[0028] 5—equipment base;

[0029] 6—inclination-water level pipe hole, 6-1—inclination pipe, 6-2—flexible connection cable, 6-3—array type displacement meter, 6-4—guide wheel, 6-5—water level meter, 6-6—orifice suspension device;

[0030] 7—pore water pressure meter hole, 7-1—pore water pressure meter, 7-2—sealing clay, 7-3—rigid fixed support, 7-4—pore water pressure meter cable, 7-5—orifice fixing device;

[0031] 8-1—water storage on the water-facing surface, 8-2—embankment filling, 8-3—soft soil layer, 8-4—soft soil layer, 8-5—hard soil layer, 8-6—embankment wetting line. DETAILED DESCRIPTION

[0032] In order 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 clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0033] As shown in Figures 1-3 The utility model discloses an automatic monitoring system for long-term settlement of deep soft foundation embankment, which is suitable for common typical deep soft foundation embankment. The common typical deep soft foundation embankment section is shown in Figure 1 The deep soft foundation embankment long-term settlement automatic monitoring system comprises a power supply module, a monitoring module, an automatic acquisition module, a data transmission module and a data post-processing module.

[0034] The power supply module comprises a photovoltaic power generation plate 1-1 and a storage battery 1-2 connected with the photovoltaic power generation plate 1-1.

[0035] The monitoring module comprises a GNSS instrument 2, an array displacement meter 6-3, a water level gauge 6-5 and a pore water pressure gauge 7-1. The photovoltaic power generation plate 1-1 and the storage battery 1-2 are arranged on the stand column of the GNSS instrument 2.

[0036] The GNSS instrument 2 is a ubiquitous GNSS receiver based on the combination of Beidou GNSS positioning technology and MEMS sensor technology, which is highly integrated and applied to field geological disaster monitoring. The GNSS instrument 2 supports CORS virtual base station and RTK, optimizes the combination algorithm and eliminates false positives. The static positioning accuracy is 2.5 mm in plane measurement and 5 mm in elevation measurement.

[0037] The array displacement meter 6-3 is an ADM series flexible inclinometer, which is composed of high-strength array fixed-length measurement units. The flexible joints capable of bearing large stress and deformation are used to connect the units. The angle range is 0-360°, and the measurement accuracy is 0.002°.

[0038] The water level gauge 6-5 is composed of a water permeable part, a silicon pressure sensor, a digital circuit, a sealed shell and a signal cable.

[0039] The pore water pressure gauge 7-1 is a vibrating wire type osmotic pressure gauge. The sensor is made of stainless steel, which has corrosion resistance and durability. After the pore water pressure gauge 7-1 is installed, the clay 7-2 is filled in the pore water pressure hole.

[0040] The automatic acquisition module comprises a multifunctional data acquisition instrument 3; the multifunctional data acquisition instrument 3 has 8 single-channel numbers, can be expanded to 16 or 32 channels according to the demand of an engineering site, and can be connected with sensor types including a vibrating string type, a current type, a voltage type and an RS485 digital sensor.

[0041] The data transmission module comprises a wireless intelligent transmission terminal 4; the wireless intelligent transmission terminal 4 can realize wireless communication with a PC through cellular data or Bluetooth, and can realize wired communication with the PC through a USB / RS232 / RS485 communication mode.

[0042] The data post-processing module comprises a PC; the PC needs to be equipped with a Windows 7 system and above, has a RAM of not less than 8 GB, and can be compatible with a PLAXIS 3D numerical calculation software.

[0043] The storage battery 1-1 is connected with the monitoring module, the automatic acquisition module and the data transmission module respectively, and supplies power for each module; the storage capacity of the storage battery 1-1 can ensure that the system normally operates for more than one year at the frequency of collecting data once a day.

[0044] The GNSS instrument 2, the array displacement meter 6-3 and the water level meter 6-5 collect position corresponding electric signals;

[0045] The automatic acquisition module receives electric signals from the monitoring module, stores the digital signals after being converted, and sends the digital signals to the data transmission module;

[0046] The data transmission module realizes wireless communication with the PC based on cellular data or Bluetooth, and transmits the automatic monitoring data signals to the PC;

[0047] The PC assigns key data to a PLAXIS three-dimensional calculation model, analyzes the overall settlement of the deep soft foundation embankment through the PLAXIS numerical calculation, and predicts the long-term settlement deformation law of the embankment.

[0048] The implementation process of the utility model is as follows (as shown in Figure 4 The utility model discloses a kind of automatic monitoring systems for deep soft foundation embankment, which comprises storage battery 1-1, GNSS instrument 2, array displacement meter 6-3, water level meter 6-5, pore water pressure gauge 7-1, monitoring module, automatic acquisition module, data transmission module and PC.

[0049] Determine monitoring section, according to the importance of geological exploration data and embankment surrounding buildings, select the automatic monitoring section, and select monitoring point position in monitoring section, generally select embankment shoulder position as monitoring point position.Determine monitoring point position, carry out sensor installation work.

[0050] First, drill the slope shoulder with a drilling machine to form the inclinometer-water level pipe hole 6 and the pore water pressure meter hole 7, which are about 40 cm apart.

[0051] The array displacement meter 6-3 and the water level meter 6-5 are installed in the inclinometer-water level pipe hole 6. After drilling by the drilling machine, the inclinometer is buried, and the length is gradually increased according to the depth. The inclinometer needs to be deep into the hard rock-soil layer. After the inclinometer reaches the designed depth, the inclinometer is filled with mortar to seal the pore. The water level meter 6-5 is connected to the lower end of the last section of the array displacement meter 6-3, and the sensor lead is drawn out at the same time. The flexible connection cable 6-2 is used to connect the array displacement meter 6-3, and it is ensured that the last array displacement meter 6-3 reaches the hard soil layer, and at least one displacement meter is ensured in each layer of soft soil above. After installation, the array displacement meter and water level meter cable are drawn out for use.

[0052] The pore water pressure meter 7-1 is installed in the pore water pressure meter hole 7, and the pore water pressure meter 7-1 is tied to the rigid fixed support 7-3, which can be made of steel bars. The installation depth of the pore water pressure meter 7-1 is determined according to the soil layer, and it is buried at the same depth as the array displacement meter 6-3. After installation, the pore water pressure meter cable 7-4 is drawn out for use.

[0053] The concrete pouring equipment base 5 is used, and the base size is not less than 80cm*80cm. During pouring, PVC pipes are inserted into the inclinometer-water level hole 6 and the pore water pressure meter hole 7 for isolation, and GNSS instrument mounting bolts are pre-buried. After the base is removed, the column of the GNSS instrument 2 is installed on the equipment base 5.

[0054] The power supply module, multifunctional digital acquisition instrument 3 and wireless intelligent transmission terminal 4 are all installed on the column of the GNSS instrument 2.

[0055] The installed equipment is debugged, including sensor calibration, data acquisition system test, data transmission function verification, etc., to ensure that the equipment can work normally and the data acquisition is accurate and reliable.

[0056] Through the PC computer cloud platform, the acquisition frequency and early warning value of the monitoring instrument can be set. If a certain monitoring data exceeds the early warning value, the platform will give an early warning through the system homepage and mobile phone message.

[0057] Through the platform data export function, key data can be exported and assigned to the three-dimensional calculation model established in the PLAXIS numerical calculation platform to calculate the overall settlement and layered settlement law of the soft foundation embankment.

[0058] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement that can be easily thought of by any person skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A deep soft foundation embankment long-term settlement automatic monitoring system applied to a deep soft foundation embankment, characterized in that: The utility model relates to a kind of deep soft foundation embankment monitoring system, including power supply module, monitoring module, automatic acquisition module, data transmission module and data post-processing module, the power supply module is connected with the monitoring module, automatic acquisition module, data transmission module respectively;The monitoring module includes GNSS instrument (2), array displacement meter (6-3), water level gauge (6-5), pore water pressure gauge (7-1);Deep soft foundation embankment is drilled in slope shoulder using drill rig to form inclinometer-water level pipe hole (6) and pore water pressure gauge hole (7), array displacement meter (6-3) and water level gauge (6-5) are installed in inclinometer-water level pipe hole (6), pore water pressure gauge (7-1) is installed in pore water pressure gauge hole (7);The automatic acquisition module receives electrical signal from monitoring module, is stored after being converted into digital signal, and is sent to the data transmission module, and the data transmission module is connected with data post-processing module. ​ 2. The automatic monitoring system for long-term settlement of embankment on deep soft ground according to claim 1, characterized in that: The power supply module includes photovoltaic power generation panel (1-1) and battery (1-2) connected with photovoltaic power generation panel (1-1).

3. The automatic monitoring system for long-term settlement of embankment on deep soft ground according to claim 1, characterized in that: The automatic acquisition module is multifunctional data acquisition instrument (3), the data transmission module is wireless intelligent transmission terminal (4), and the data post-processing module is PC.

4. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 1, characterized in that: The GNSS instrument (2) is a ubiquitous GNSS receiver based on Beidou GNSS positioning technology and MEMS sensor technology.

5. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 1, characterized in that: The array displacement meter (6-3) is ADM series flexible inclinometer, which is composed of high-strength array fixed-length measurement unit.

6. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 1, characterized in that: The pore water pressure gauge (7-1) is a vibrating wire osmometer made of stainless steel.

7. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 3, characterized in that: The multifunctional data acquisition instrument (3) has 8 channels per unit, which can be expanded to 16 or 32 channels according to the needs of the construction site.

8. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 3, characterized in that: The wireless intelligent transmission terminal (4) realizes wireless communication with PC through cellular data or Bluetooth, or realizes wired communication with PC through USB / RS232 / RS485 communication mode.

9. The long-term settlement automatic monitoring system for embankment of deep soft foundation according to claim 3, characterized in that: A concrete pouring equipment base (5) is used, and the column of the GNSS instrument (2) is installed on the equipment base (5), and the power supply module, multifunctional data acquisition instrument (3) and wireless intelligent transmission terminal (4) are all installed on the column of the GNSS instrument (2).

10. The automatic monitoring system for long-term settlement of deep soft foundation embankment according to claim 1, characterized in that, The water level gauge (6-5) is connected to the lower end of the array displacement meter (6-3) in the last section.