Signal acquisition and processing unit for soil slope stability detection

Abstract

The invention relates to the technical field of geological engineering detection, in particular to a signal acquisition and processing unit for soil slope stability detection, which comprises a hollow cylindrical measuring unit body, a spherical hollow ball head is arranged at the top of the measuring unit body, an internal thread nut is mounted outside the spherical hollow ball head, and the internal thread nut is connected with the measuring unit body. The bottom of the measuring unit body is provided with a spherical hollow recess, the outside of the spherical hollow recess is provided with an external thread, two groups of micro tilt angle sensors and relative humidity sensors are installed in the measuring unit body, and the measuring unit body can be in end-to-end mechanical electrical communication connection and can form a certain angle. By integrating various high-precision sensors, horizontal displacement and water content of different-depth stratums of the soil slope can be measured, data support is provided for slope stability analysis, detection precision and efficiency are effectively improved, unit design is achieved, transportation and installation are flexible and convenient, different detection depth requirements can be met, and rapid installation and deployment can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering detection, and specifically to a signal acquisition and processing unit for detecting the stability of soil slopes. Background Art

[0002] In the field of geotechnical engineering, the detection of soil slope stability is of great importance. Traditional methods for detecting soil slopes, such as manual inspections and detections using simple measuring tools, have many drawbacks. Manual inspections are greatly affected by subjective factors, with low detection accuracy and difficulty in discovering potential subtle geological changes. Simple measuring tools cannot accurately measure the parameters of different depths of strata inside the slope, and cannot obtain and analyze data in real time. With the development of technology, although some advanced detection technologies have emerged, most of them have problems such as complex equipment, inconvenient installation, and high costs, making it difficult to be widely applied in actual projects. Currently, there is an urgent need in the market for a signal acquisition and processing unit for detecting the stability of soil slopes that is simple in structure, convenient to install, accurate in detection, and controllable in cost to meet the growing demand for geotechnical engineering safety detection. Therefore, a signal acquisition and processing unit for detecting the stability of soil slopes is proposed. Summary of the Invention

[0003] In view of this, the present invention provides a signal acquisition and processing unit for detecting the stability of soil slopes to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0004] The technical solution of the present invention is realized as follows: It includes a hollow cylindrical measuring unit body centered on the central axis Z-axis. The upper end of the measuring unit body has a central hollow channel and a spherical ball head on the outer surface centered on the central axis Z-axis. An internally threaded lock nut that can rotate around the central axis Z-axis but cannot fall off or separate from the spherical ball head on the outer surface is installed outside the spherical ball head on the outer surface. The lower end of the measuring unit body has a central hollow channel and a spherical concave surface on the inner surface centered on the central axis Z-axis. An external thread is provided on the outer surface of the spherical concave surface on the inner surface. The internally threaded lock nut installed outside the spherical ball head on the outer surface of the upper end of the measuring unit body can be engaged and locked with the external thread of the spherical concave surface on the inner surface of the lower end of another identical measuring unit body. This engagement and locking can make two adjacent hollow cylindrical measuring unit bodies connected end to end, and a certain angle can be freely formed between their respective central axes Z-axis.

[0005] Further preferably, a signal acquisition and processing unit module is installed in the middle section inside the measurement unit body. Circuit installation hollow areas are respectively formed above and below the signal acquisition and processing unit module in the measurement unit body. An upper drainage hole is provided on the bottom outer wall of the upper circuit installation hollow area of the measurement unit body. A ventilation hole is provided on the top outer wall of the lower circuit installation hollow area of the measurement unit body. An upper drainage hole is provided on the bottom outer wall of the lower circuit installation hollow area of the measurement unit body.

[0006] Further preferably, two micro-inclinometers are installed inside the signal acquisition and processing unit module. The two micro-inclinometers can respectively measure the inclinations of the central axis Z of the measurement unit body in two mutually perpendicular directions on the horizontal plane. An air relative humidity sensor is installed below the signal acquisition and processing unit module. A power supply circuit, a signal processing circuit, and a data transmission circuit for the two micro-inclinometers and the air relative humidity sensor are installed inside the signal acquisition and processing unit module.

[0007] Further preferably, a flexible spiral retractable waterproof cable is led out from the upper part of the signal acquisition and processing unit module and connected to an upper connector through a waterproof cable. A flexible spiral retractable waterproof cable is led out from the lower part of the signal acquisition and processing unit module and connected to a lower connector through a waterproof cable. The waterproof cable connected to the upper connector can freely extend out of the upper central hollow channel of the measurement unit body. The waterproof cable connected to the lower connector can freely extend out of the lower central hollow channel of the measurement unit body. The signal acquisition and processing unit module has a protection level design of above IP. The waterproof cable connected to the upper connector of one of the two connected measurement unit bodies can be connected to the waterproof cable connected to the lower connector of the other measurement unit body with a protection level of above IP54. The upper connector of the measurement unit body and the lower connector of another measurement unit body connected thereto form a power supply and data transmission channel for the relevant signal acquisition and processing unit module.

[0008] Due to the above technical solutions adopted in the embodiments of the present invention, the following advantages are achieved:

[0009] 1. By integrating a variety of high-precision sensors, the present invention can accurately measure the horizontal displacement and water content parameters of soil slopes at different depths, providing accurate data support for slope stability analysis, effectively improving the detection accuracy. The bendable design of the measurement unit enables it to adapt to the detection requirements of soil slopes with different shapes and terrains, and is flexible and convenient to install, and can be quickly installed and deployed in complex geological environments.

[0010] II. The fully enclosed waterproof and dustproof design of the core area of the present invention and the application of waterproof cable connection connectors ensure that the detection unit can still operate stably in harsh natural environments, reducing detection errors and equipment failures caused by environmental factors, and improving the reliability and service life of the equipment.

[0011] III. The present invention can achieve real-time monitoring of soil slopes. Once potential geological hazards are detected, the unified signal acquisition processor can quickly send out alarm signals, providing sufficient time for relevant personnel to take measures and effectively ensuring the safety of people's lives and property.

[0012] IV. The present invention adopts a modular design. The measurement unit has a simple structure, and no complex technology and equipment are required during the installation process, which can greatly reduce the installation cost. At the same time, the construction cost of the overall detection system is relatively low, which is conducive to wide application in actual projects.

[0013] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is the structural diagram of the present invention;

[0016] Figure 2 It is the external structural diagram of the present invention;

[0017] Figure 3 It is for the present invention Figure 2 from another perspective structural diagram.

[0018] Reference numerals: 1, main body of the measurement unit; 2, spherical hollow ball head; 3, internal thread nut; 4, humidity sensor; 5, lower drain hole; 6, spherical hollow depression; 7, core area; 8, ventilation hole; 9, upper drain hole; 10, lower waterproof cable connection plug; 11, upper waterproof cable connection plug. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the accompanying drawings and the description are considered to be exemplary in nature rather than restrictive.

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] As Figures 1-3 shown, the embodiment of the present invention provides a measurement unit body 1 in a hollow cylindrical shape centered on the central axis Z-axis. At the upper end of the measurement unit body 1, there is a central hollow channel centered on the central axis Z-axis and an outer surface spherical ball head 2. An internally threaded lock nut 3 that can rotate around the central axis Z-axis but cannot fall off or separate from the outer surface spherical ball head 2 is installed outside the outer surface spherical ball head 2. At the lower end of the measurement unit body 1, there is a central hollow channel centered on the central axis Z-axis and an inner surface spherical depression 6. The outer surface of the inner surface spherical depression 6 is provided with an external thread. The internally threaded lock nut 3 installed outside the outer surface spherical ball head 2 at the upper end of the measurement unit body 1 can be engaged and locked with the external thread of the inner surface spherical depression 6 at the lower end of another identical measurement unit body 1. The engagement and locking can make two adjacent measurement unit bodies 1 connected end to end, and their respective central axes Z-axis can freely form a certain angle.

[0022] In one embodiment, a signal acquisition and processing unit module 7 is installed in the middle section inside the measurement unit body 1. Circuit installation hollow areas upper area and circuit installation hollow areas lower area are respectively formed above and below the signal acquisition and processing unit module 7 in the measurement unit body 1. An upper drain hole 9 is opened on the bottom outer wall of the circuit installation hollow areas upper area of the measurement unit body 1. A ventilation hole 8 is provided on the top outer wall of the circuit installation hollow areas lower area of the measurement unit body 1. An upper drain hole 10 is provided on the bottom outer wall of the circuit installation hollow areas lower area of the measurement unit body 1.

[0023] In one embodiment, two groups of micro-inclinometers are installed inside the signal acquisition and processing unit module 7. The two groups of micro-inclinometers can respectively measure the inclinations of the central axis Z-axis of the hollow cylindrical measurement unit body 1 in two directions perpendicular to each other on the horizontal plane. An air relative humidity sensor 4 is installed below the signal acquisition and processing unit module 7. A power supply circuit, a signal processing circuit, and a data transmission circuit for the two groups of micro-inclinometers and the air relative humidity sensor 4 are installed inside the signal acquisition and processing unit module 7.

[0024] In one embodiment, a flexible spiral retractable waterproof cable is led out from the upper part of the signal acquisition and processing unit module 7, and the waterproof cable is connected to the upper connector (11). A flexible spiral retractable waterproof cable is led out from the lower part of the signal acquisition and processing unit module 7, and the waterproof cable is connected to the lower connector (10). The waterproof cable connected to the upper connector (11) can freely extend out of the upper end central hollow channel of the measuring unit body 1, and the waterproof cable connected to the lower connector (10) can freely extend out of the lower end central hollow channel of the measuring unit body 1. The signal acquisition and processing unit module 7 is designed with a protection level of IP54 or above. The waterproof cable connected to the upper connector 11 of the measuring unit body 1 can be connected to the waterproof cable connected to the lower connector 10 of another measuring unit body 1 connected thereto through an internal thread lock nut 3 with a protection level of IP54 or above. The upper connector of the measuring unit body 1 and the lower connector of another measuring unit body 1 connected thereto form a power supply and data transmission channel for the relevant signal acquisition and processing unit module 7.

[0025] In one embodiment, the upper and lower ends of the measuring unit body are swapped, the upper area (or lower area) of the hollow area for circuit installation is partially cancelled, and the flexible spiral retractable waterproof cable and the upper connector (or lower connector) of the waterproof cable are replaced by a fixed socket.

[0026] When the present invention is in operation: When detecting a soil slope to be detected, first drill detection holes on the slope according to the required points. Then, continuously install the measurement units vertically end to end in each detection hole, connect the spherical hollow ball head 2 at the top with the spherical hollow depression 6 at the bottom, and connect the waterproof cable connector 11 at the top with the waterproof cable connector 10 at the bottom to ensure that the corresponding terminal circuits are connected, thereby achieving communication and power connection between two adjacent measurement units; an internal thread end cover is provided at the lower end of the measurement unit at the bottommost end in a single detection hole, and is locked with the measurement unit to form a closed connection. At the same time, a corresponding waterproof cable plug-in closed end cover is provided to insulate and seal the corresponding circuit; multiple measurement units form a single-point measurement array in a single detection hole; backfill and compact with the same type of soil material according to the subgrade construction quality standard for fixation; different single-point measurement arrays are connected to an external power supply and a unified signal acquisition processor to jointly form a single-section slope measurement early warning and alarm array; each single-section slope measurement early warning and alarm array is equipped with an information release and slope disaster alarm response device; Detection and early warning principle: During the operation of the single-section slope measurement early warning and alarm array, the single-point measurement array can measure the horizontal displacement (including creep, landslide, collapse, etc.) of different depth strata and the formation water content parameters (used to evaluate the reduction of bearing capacity, the possibility of liquefaction, etc.), and upload the measurement data to the unified signal acquisition processor. The unified signal acquisition processor compares and calculates the received specific signal parameters with the preset early warning parameters. Once it is found that the parameters exceed the preset range, real-time detection and alarm of geological hidden dangers and disasters at different locations and different strata can be realized.

[0027] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A signal acquisition and processing unit for detecting the stability of soil slopes, characterized in that: It includes a hollow cylindrical measurement unit body (1) centered on the central axis Z-axis. At the upper end of the measurement unit body (1), there is a central hollow channel centered on the central axis Z-axis and an outer surface spherical ball head (2). An internally threaded lock nut (3) that can rotate around the central axis Z-axis but cannot fall off or separate from the outer surface spherical ball head (2) is installed outside the outer surface spherical ball head (2). At the lower end of the measurement unit body (1), there is a central hollow channel centered on the central axis Z-axis and an inner surface spherical depression (6). The outer surface of the inner surface spherical depression (6) is provided with an external thread. The internally threaded lock nut (3) installed outside the outer surface spherical ball head (2) at the upper end of the measurement unit body (1) can be engaged and locked with the external thread of the inner surface spherical depression (6) at the lower end of another identical measurement unit body (1). This engagement and locking can make the two connected measurement unit bodies (1) connected end to end, and a certain angle can be freely formed between their respective central axes Z-axis.

2. The signal acquisition and processing unit for detecting the stability of soil slopes according to claim 1, characterized in that: A signal acquisition and processing unit module (7) is installed in the middle section inside the measurement unit body (1). An upper circuit installation hollow area and a lower circuit installation hollow area are respectively formed in the upper and lower parts of the signal acquisition and processing unit module (7) in the measurement unit body (1). An upper drain hole (9) is opened on the bottom outer wall of the upper circuit installation hollow area of the measurement unit body (1). A ventilation hole (8) is provided on the top outer wall of the lower circuit installation hollow area of the measurement unit body (1). An upper drain hole (10) is provided on the bottom outer wall of the lower circuit installation hollow area of the measurement unit body (1).

3. The signal acquisition and processing unit for detecting the stability of a soil slope according to claim 1, wherein: Two groups of micro-inclinometers are installed inside the signal acquisition and processing unit module (7). The two groups of micro-inclinometers can respectively measure the inclination angles of the central axis Z-axis of the measurement unit body (1) in two mutually perpendicular directions on the horizontal plane. An air relative humidity sensor (4) is installed at the lower part of the signal acquisition and processing unit module (7). A power supply circuit, a signal processing circuit, and a data transmission circuit for the two groups of micro-inclinometers and the air relative humidity sensor (4) are installed inside the signal acquisition and processing unit module (7).

4. The signal acquisition and processing unit for detecting the stability of soil slopes according to claim 1, wherein: The upper part of the signal acquisition and processing unit module (7) leads out a flexible spiral retractable waterproof cable and a waterproof cable to connect the upper connector (11). The lower part of the signal acquisition and processing unit module (7) leads out a flexible spiral retractable waterproof cable and a waterproof cable to connect the lower connector (10). The waterproof cable connecting the upper connector (11) can freely extend out of the upper central hollow channel of the measuring unit body (1). The waterproof cable connecting the lower connector (10) can freely extend out of the lower central hollow channel of the measuring unit body (1). The signal acquisition and processing unit module (7) has a protection level design of IP54 or above. The waterproof cable connecting the upper connector (11) of one of the two connected measuring unit bodies (1) can be connected to the waterproof cable connecting the lower connector (10) of the other with a protection level of IP54 or above. The waterproof cable connecting the upper connector (11) of one of the two connected measuring unit bodies (1) can be connected to the waterproof cable connecting the lower connector (10) of the other to form a power supply and data transmission channel for the relevant signal acquisition and processing unit module (7).

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