CN111535370A - Real-time monitoring system for deep foundation pit - Google Patents
Real-time monitoring system for deep foundation pit Download PDFInfo
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- CN111535370A CN111535370A CN202010217362.1A CN202010217362A CN111535370A CN 111535370 A CN111535370 A CN 111535370A CN 202010217362 A CN202010217362 A CN 202010217362A CN 111535370 A CN111535370 A CN 111535370A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention relates to a real-time monitoring system for a deep foundation pit, which comprises a foundation pit data acquisition device, a storage device, an MCU processing module and an image analysis and comparison device, wherein the foundation pit data acquisition device is used for acquiring position information and acquisition information of each monitoring point in the foundation pit at different moments; the MCU processing module is used for converting the obtained position information and the acquired information of the monitoring points at different moments into engineering coordinate data at different moments; the image analysis and comparison device is used for constructing three-dimensional graphs from the engineering coordinate data at different moments, displaying the constructed three-dimensional graphs in time sequence through the display device, and comparing the three-dimensional graphs at the front moment and the rear moment to obtain the moving track of each monitoring point. The invention improves the monitoring precision and reduces the monitoring cost and risk.
Description
Technical Field
The invention relates to the technical field of foundation pit monitoring, in particular to a real-time monitoring system for a deep foundation pit.
Background
With the rapid development of economy, large buildings such as high-rise buildings, underground tunnels and the like are more and more, the excavation depth and scale of corresponding foundation pits are larger and larger, the surrounding environment is more and more complex, and the difficulty of excavation and supporting of the foundation pits is larger and larger. The foundation pit monitoring is indispensable as one of measures for ensuring the safety of the foundation pit.
In the current stage of foundation pit monitoring, observation points are mainly arranged at the periphery of the foundation pit and in the foundation pit, and a total station and an inclinometer are used for collecting data to monitor the change of the foundation pit. The disadvantages are as follows: 1. manual observation is not conducive to monitoring the accuracy of the values. 2. At the present stage, the foundation pit is deeper and deeper, and the danger coefficient of manual monitoring is larger and larger. 3. The national safety requirements for deep foundation pits are higher and higher, and the requirements cannot be met by monitoring once every day. The development of the foundation pit monitoring towards the direction of automation, digitization, precision, intellectualization and visualization is the inevitable trend of future development.
Disclosure of Invention
The invention aims to provide a real-time monitoring system for a deep foundation pit, which improves monitoring precision and reduces monitoring cost and risk.
The technical scheme adopted by the invention for solving the technical problems is as follows: the deep foundation pit real-time monitoring system comprises a foundation pit data acquisition device, a storage device, an MCU processing module and an image analysis and comparison device, wherein the foundation pit data acquisition device is used for acquiring position information and acquisition information of each monitoring point in a foundation pit at different moments; the MCU processing module is used for converting the obtained position information and the acquired information of the monitoring points at different moments into engineering coordinate data at different moments; the image analysis and comparison device is used for constructing three-dimensional graphs from the engineering coordinate data at different moments, displaying the constructed three-dimensional graphs in time sequence through the display device, and comparing the three-dimensional graphs at the front moment and the rear moment to obtain the moving track of each monitoring point.
The foundation pit data acquisition device comprises a radar reflector, a radar data acquisition module, a geographic position data acquisition module and a position information arrangement module; the radar reflector is arranged at each monitoring point of the foundation pit, and the radar data acquisition module is used for scanning the radar reflector to obtain radar three-dimensional data of each monitoring point at different moments; the geographic position data acquisition module is used for acquiring geographic position coordinate data of the radar data acquisition module at different moments; and the position information sorting module is used for numbering the radar three-dimensional data obtained at different moments and the geographic position coordinate data of the radar data acquisition module.
The radar reflector is an insertion type radar reflector or a thread type radar reflector.
And the MCU processing module converts the radar three-dimensional data into engineering coordinate data at different moments according to the geographic position coordinate data of the radar data acquisition module at different moments.
The MCU processing module is also connected with a storage device, and the storage device stores the obtained engineering coordinate data according to a time sequence.
The storage device comprises a hard disk storage module and a network storage module.
The image analysis and comparison device is further connected with a manual input module, the manual input module is used for inputting early warning values, the image analysis and comparison device compares the lengths of the movement tracks of the monitoring points with the early warning values, and when the lengths of the movement tracks are equal to the early warning values, an alarm is given.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: the invention can save the cost of manual monitoring, reduce the safety risk of manual monitoring, improve the monitoring precision, monitor in real time and accurately, timely and intuitively reflect the state of the foundation pit.
Drawings
FIG. 1 is a block diagram of the architecture of the present invention;
FIG. 2 is a schematic diagram of a radar reflector used in embodiments of the present invention;
fig. 3 is a schematic structural view of another radar reflector used in the embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a real-time monitoring system for a deep foundation pit, which comprises a foundation pit data acquisition device, a storage device, an MCU processing module and an image analysis and comparison device, wherein the foundation pit data acquisition device is used for acquiring position information and acquisition information of each monitoring point in the foundation pit at different moments; the MCU processing module is used for converting the obtained position information and the acquired information of the monitoring points at different moments into engineering coordinate data at different moments; the MCU processing module is also connected with a storage device, and the storage device stores the obtained engineering coordinate data according to a time sequence; the image analysis and comparison device is used for constructing three-dimensional graphs from the engineering coordinate data at different moments, displaying the constructed three-dimensional graphs in time sequence through the display device, and comparing the three-dimensional graphs at the front moment and the rear moment to obtain the moving track of each monitoring point.
The foundation pit data acquisition device in the embodiment comprises a radar reflector, a radar data acquisition module, a geographic position data acquisition module and a position information arrangement module; the radar reflector is arranged at each monitoring point of the foundation pit, and the radar data acquisition module is used for scanning the radar reflector to obtain radar three-dimensional data of each monitoring point at different moments; the geographic position data acquisition module is used for acquiring geographic position coordinate data of the radar data acquisition module at different moments; and the position information sorting module is used for numbering the radar three-dimensional data obtained at different moments and the geographic position coordinate data of the radar data acquisition module. And the MCU processing module converts the radar three-dimensional data into engineering coordinate data at different moments according to the geographic position coordinate data of the radar data acquisition module at different moments.
The image analysis and comparison device is further connected with a manual input module, the manual input module is used for inputting an early warning value, the image analysis and comparison device compares the length of the movement track of each monitoring point with the early warning value, and when the length of the movement track exceeds the early warning value, an alarm is given.
Before the system is used, the ground survey data of the foundation pit and surrounding buildings need to be collected, and the early warning value is set by combining the concrete conditions of the project. The radar reflector mounting position (i.e. the position of the monitoring point) is then determined: except special required point positions, the other point positions are all installed one by one at intervals of 5-10 meters in the horizontal direction of the pit wall, and the other point positions are installed one at intervals of 3-5 meters in the vertical direction of the pit wall. Then at the position that does not influence excavation and do not have the ground disturbance, install radar equipment (be radar data acquisition module promptly), GPS equipment (be geographical position data acquisition module promptly) and basic station, wherein, radar equipment and GPS equipment will be installed on integrative support, are convenient for accurate and the equipment of location to the radar and concentrate the power supply. Finally, a position arrangement module and an MCU processing module are installed at the computer end (namely, the image analysis comparison device), and the computer is connected with a printer and a storage device.
As shown in fig. 2, the radar reflector in this embodiment may be an insertion-type radar reflector, which is suitable for a soil foundation pit and includes a fixed end and a reflective end, wherein the fixed end is a round steel bar with a length of 150mm and a diameter of 12 mm, and the reflective end is an outer copper-plated film made of plastic-aluminum. As shown in fig. 3, the radar reflector in this embodiment may also be a threaded radar reflector, which is suitable for a concrete supporting foundation pit and is also divided into a fixed end and a reflective end, wherein the fixed end is a threaded rod with a length of 50mm and a diameter of 12 mm, and the reflective end is an outer copper-plated film made of plastic-aluminum. The radar reflector adopted by the embodiment can be used without connecting any data and power lines, and has the effects of increasing the reflection intensity of the monitoring point, effectively reducing the radar power and improving the monitoring precision.
When the method is implemented, engineering information and an early warning value are input through a manual input module. Then according to the radar reflector: if the soil foundation pit is the inserted radar corner reflector, if the soil foundation pit is the concrete supporting structure foundation pit, the expansion bolt is installed firstly, and then the threaded radar reflector is installed. The method comprises the steps of scanning the arranged radar reflectors through radar equipment at different moments, acquiring three-dimensional data of monitoring points at different moments, and acquiring position and elevation information of the radar equipment by using GPS equipment. The data acquired by the radar equipment and the GPS equipment are transmitted to a position information arrangement module in a wireless transmission mode, and the position information arrangement module acquires the dataThe obtained data is automatically numbered, namely the data obtained at the first moment is numbered as follows, and the three-dimensional data of the monitoring point 1 obtained by the radar equipment is
The three-dimensional data acquired by the radar equipment to the monitoring point 2 is
The position and elevation information of the radar device acquired by the GPS device is (X)1,Y1,Z1) Numbering the data obtained at the second moment as follows, wherein the three-dimensional data of the monitoring point 1 obtained by the radar equipment is
The three-dimensional data acquired by the radar equipment to the monitoring point 2 is
The position and elevation information of the radar device acquired by the GPS device is (X)2,Y2,Z2) And the numbered data are converted into a format which accords with the operation of the MCU processing module. The data arranged by the position information arrangement module enter the MCU processing module for operation and are converted into coordinate data corresponding to the project, namely the MCU processing module converts the three-dimensional data of each monitoring point under the radar coordinate system acquired by the radar equipment into the project coordinate data under the GPS coordinate system on the basis of the position and elevation information of the radar equipment acquired by the GPS equipment at each time. And the MCU processing module stores the obtained engineering coordinate data to the storage device according to the time sequence and simultaneously inputs the engineering coordinate data to the computer terminal. In order to ensure that data is not lost, the storage device in the embodiment includes a hard disk storage module and a network storage module, wherein the hard disk storage module realizes local storage, and the network storage module realizes cloud storage. The three-dimensional display analysis software of the computer end constructs a three-dimensional graph after acquiring the engineering coordinate data and displays the three-dimensional graphThe device displays the three-dimensional graph according to the time sequence to form a contrast graph for each monitoring, so that the moving track of each monitoring point can be obtained. When the length of the moving track of the monitoring point is close to a set early warning value, the system prompts that the data exceeds and alarms at the same time, and the printing device prints and outputs the data.
The invention can save the cost of manual monitoring, reduce the safety risk of manual monitoring, improve the monitoring precision, monitor in real time and accurately, timely and intuitively reflect the state of the foundation pit.
Claims (7)
1. A real-time monitoring system for a deep foundation pit comprises a foundation pit data acquisition device, a storage device, an MCU processing module and an image analysis and comparison device, and is characterized in that the foundation pit data acquisition device is used for acquiring position information and acquisition information of each monitoring point in the foundation pit at different moments; the MCU processing module is used for converting the obtained position information and the acquired information of the monitoring points at different moments into engineering coordinate data at different moments; the image analysis and comparison device is used for constructing three-dimensional graphs from the engineering coordinate data at different moments, displaying the constructed three-dimensional graphs in time sequence through the display device, and comparing the three-dimensional graphs at the front moment and the rear moment to obtain the moving track of each monitoring point.
2. The real-time monitoring system for the deep foundation pit according to claim 1, wherein the foundation pit data acquisition device comprises a radar reflector, a radar data acquisition module, a geographic position data acquisition module and a position information arrangement module; the radar reflector is arranged at each monitoring point of the foundation pit, and the radar data acquisition module is used for scanning the radar reflector to obtain radar three-dimensional data of each monitoring point at different moments; the geographic position data acquisition module is used for acquiring geographic position coordinate data of the radar data acquisition module at different moments; and the position information sorting module is used for numbering the radar three-dimensional data obtained at different moments and the geographic position coordinate data of the radar data acquisition module.
3. The real-time monitoring system for a deep foundation pit according to claim 2, wherein the radar reflector is an insertion type radar reflector or a screw type radar reflector.
4. The real-time monitoring system for the deep foundation pit according to claim 1, wherein the MCU processing module converts radar three-dimensional data into engineering coordinate data at different moments according to geographic position coordinate data of the radar data acquisition module at different moments.
5. The real-time monitoring system for the deep foundation pit according to claim 1, wherein the MCU processing module is further connected with a storage device, and the storage device stores the obtained engineering coordinate data in time sequence.
6. The real-time monitoring system for the deep foundation pit according to claim 5, wherein the storage device comprises a hard disk storage module and a network storage module.
7. The real-time monitoring system for the deep foundation pit according to claim 1, wherein the image analysis and comparison device is further connected with a manual input module, the manual input module is used for inputting an early warning value, the image analysis and comparison device compares the obtained length of the movement track of each monitoring point with the early warning value, and an alarm is given when the length of the movement track is equal to the early warning value.
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| CN202010217362.1A CN111535370A (en) | 2020-03-25 | 2020-03-25 | Real-time monitoring system for deep foundation pit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112580930A (en) * | 2020-11-20 | 2021-03-30 | 深圳城安软通科技集团有限公司 | Deep foundation pit engineering risk identification technology method and system based on GIS |
| CN113653107A (en) * | 2021-08-05 | 2021-11-16 | 中国建筑第八工程局有限公司 | Foundation pit monitoring method and system based on 5G + informatization |
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Application publication date: 20200814 |