Real-time monitoring and early warning device for river bank collapse

Abstract

The application discloses a kind of real-time monitoring and early warning device of river bank collapse.The device includes monitoring system, transmission system and analysis system;The monitoring system includes multiple monitoring chains arranged at intervals on river bank slope, each of the monitoring chain includes several concrete blocks arranged at intervals, each of the concrete blocks is internally embedded with a gyroscope positioning system, and adjacent gyroscope positioning systems are connected with power supply line and signal transmission line for easy contraction;The transmission system is used to provide power supply for the gyroscope positioning system, receive the signal emitted by the gyroscope positioning system, and transmit the received signal to the analysis system;The analysis system is used to compare the size between the maximum comprehensive slope ratio and the early warning slope ratio, and issue an alarm.The application can monitor a wide range of river bank slope in real time and give early warning, overcoming the lag of general monitoring method.

Description

Technical Field

[0001] This invention relates to the field of safety monitoring technology for river regulation projects, specifically to a real-time monitoring and early warning device for riverbank collapse. Background Technology

[0002] Bank collapse is a common phenomenon of planar deformation in the middle and lower reaches of the Yangtze River. However, large-scale bank collapses pose a serious threat to the safety of flood control, navigation, and waterfront buildings, and are a significant disaster-causing factor in the middle and lower reaches of the Yangtze River. After the Three Gorges Project was put into operation, the discharge of clear water caused continuous scouring of the riverbed in the middle and lower reaches of the Yangtze River, reducing the stability of the riverbanks and leading to frequent bank collapses, which are characterized by their suddenness and concealment.

[0003] The occurrence of bank collapse is influenced by numerous factors, and no research results have yet revealed the mechanism of bank collapse, making the monitoring and early warning of bank collapse still very difficult. Existing bank collapse early warning technologies are not yet fully mature, mainly relying on river topographic surveys, which are labor-intensive and costly, have weak timeliness, and are highly experience-based. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a real-time monitoring and early warning device for riverbank collapse. This device can monitor the underwater riverbank slope being eroded by water flow in real time, understand the stability of the slope, and predict potential collapses in advance, so as to provide timely warnings and take necessary measures.

[0005] To achieve the above objectives, this invention designs a real-time monitoring and early warning device for riverbank collapse, which is characterized by including a monitoring system, a transmission system, and an analysis system.

[0006] The monitoring system comprises multiple monitoring chains spaced apart on the riverbank. Each monitoring chain extends from the lower end to the deep estuary of the riverbed to the upper end to the riverbank lip. Each monitoring chain includes several spaced-apart concrete blocks. Each concrete block can adhere to the riverbank under the action of water flow and move with the bank. A gyroscope positioning system is pre-embedded inside each concrete block. Adjacent gyroscope positioning systems are connected by retractable power supply lines and signal transmission lines. The power supply lines are used to transmit power to the gyroscope positioning systems, and the signal transmission lines are used to transmit the three-dimensional geographic coordinate information of the corresponding concrete block fed back by the gyroscope positioning systems.

[0007] The transmission system is located on the shore corresponding to each monitoring chain. It is used to provide power to the gyroscope positioning system, receive signals from the gyroscope positioning system, and transmit the received signals to the analysis system.

[0008] The analysis system is used to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block fed back by each gyroscope positioning system. Based on the three-dimensional point cloud, a topographic cloud map of the riverbank is simulated. Then, the cross-section of the topographic cloud map is cut to calculate the maximum comprehensive slope ratio in each cross-section. When the maximum comprehensive slope ratio is greater than the warning slope ratio, an alarm is issued, thereby realizing real-time monitoring and early warning of a large area of ​​riverbank slope.

[0009] Furthermore, the calculation formula for the size of each concrete block is as follows:

[0010]

[0011] In the formula,

[0012] d represents the equivalent diameter of the concrete block, in meters (m), converted to a spherical shape.

[0013] V represents the flow velocity of the river, measured in m / s.

[0014] g represents the acceleration due to gravity, measured in m / s². 2 ,

[0015] C represents the kinematic stability coefficient of the concrete block.

[0016] γ s This indicates the unit weight of the concrete block, expressed in kN / m³. 3 ,

[0017] γ represents the specific gravity of water in the river channel, measured in kN / m³. 3 .

[0018] Furthermore, each of the aforementioned monitoring chains extends from the upper end to above the beach lip and from the lower end to the deep water.

[0019] Furthermore, the power supply line and signal transmission line are surrounded by a connecting sleeve, which is made of a flexible material that provides waterproof and corrosion protection. The length of the connecting sleeve ensures that the connected concrete block can move freely with changes in the slope terrain.

[0020] Furthermore, the transmission system includes a power supply, a signal receiving device, and a signal transmission device. The power supply provides power to the gyroscope positioning system, the signal receiving device receives the three-dimensional geographic coordinate information emitted by the gyroscope positioning system, and the signal transmission device transmits the received three-dimensional geographic coordinate information to the analysis system.

[0021] Furthermore, the power source is a solar-powered light pole erected on the shore.

[0022] Furthermore, the analysis system includes a server, a database, a bank slope cloud image simulation and analysis early warning program, and a client.

[0023] The slope cloud map simulation and analysis early warning program uses the VB programming language to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block fed back by the gyroscope positioning system, and simulates the slope topographic cloud map based on the three-dimensional point cloud.

[0024] The server is equipped with a database and a slope cloud map simulation, analysis and early warning program. It is connected to the Internet along with the transmission system. It cuts cross sections of the topographic cloud map, calculates the maximum comprehensive slope ratio in each section, and compares the maximum comprehensive slope ratio with the early warning slope ratio.

[0025] The client is used to display real-time changes in the topographic cloud map of the bank slope, display the comparison results between the maximum comprehensive slope ratio and the warning slope ratio, and issue warnings based on the comparison results.

[0026] Furthermore, the warning slope ratio is calculated based on the hydrogeological conditions of the corresponding riverbank slope.

[0027] The advantages of this invention are:

[0028] 1. This invention involves arranging multiple monitoring chains at intervals on the riverbank. Each monitoring chain extends from the deep estuary at the bottom of the river to the lip of the riverbank. Concrete blocks that can adhere closely to the riverbank and move with the bank under the action of water flow are arranged at intervals on the monitoring chains. The three-dimensional geographic coordinate information of the corresponding concrete block is monitored in real time by a gyroscope positioning system embedded inside the concrete block. The three-dimensional geographic coordinate information of the concrete block is transmitted to the analysis system through a transmission system to simulate the topographic cloud map of the riverbank. Then, the cross-section of the topographic cloud map is cut to calculate the comprehensive slope ratio of each cross-section. When the comprehensive slope ratio is greater than the warning slope ratio, an alarm is issued, thereby realizing real-time monitoring and early warning of a large area of ​​riverbank.

[0029] 2. This invention can monitor bank slope erosion in real time, provide early warnings, and overcome the lag of general monitoring methods;

[0030] 3. This invention is highly targeted, requires a low initial investment, and has low daily operation and maintenance costs, which can significantly reduce expenses;

[0031] The real-time monitoring and early warning device for riverbank collapse of the present invention can monitor and provide early warning of riverbank slopes over a large area in real time, overcoming the lag of general monitoring methods. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structural framework of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of a single monitoring chain in this invention;

[0034] Figure 3 This is a schematic diagram of the concrete block structure in this invention;

[0035] Figure 4 for Figure 3 A schematic diagram of the internal structure of the connecting sleeve in the diagram;

[0036] Figure 5 This is a schematic diagram of the transmission system in this invention;

[0037] Figure 6 This is a cross-section generated from a curved surface in an embodiment of the present invention;

[0038] In the diagram: Monitoring system 1, transmission system 2, analysis system 3;

[0039] Monitoring system 1 includes: concrete block 1-1, gyroscope positioning system 1-2, power supply line 1-3, signal transmission line 1-4, and connecting sleeve 1-5;

[0040] Transmission system 2 includes: power supply 2-1, signal receiving device 2-2, and signal transmission device 2-3;

[0041] Analysis system 3 includes: server 3-1, database 3-2, bank slope cloud map simulation and analysis early warning program 3-3, and client 3-4. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0044] like Figure 1 As shown, the real-time monitoring and early warning device for riverbank collapse of the present invention includes a monitoring system 1, a transmission system 2, and an analysis system 3.

[0045] The monitoring system 1 includes multiple monitoring chains spaced apart on the riverbank. The lower end of each monitoring chain extends to the deep estuary at the bottom of the river and the upper end extends to the riverbank lip. Each monitoring chain includes several spaced concrete blocks 1-1. Each concrete block 1-1 can adhere to the riverbank under the action of water flow and move with the bank. A gyroscope positioning system 1-2 is pre-embedded inside each concrete block 1-1. Adjacent gyroscope positioning systems 1-2 are connected by a retractable power supply line 1-3 and a signal transmission line 1-4. The power supply line 1-3 is used to transmit power to the gyroscope positioning system 1-2, and the signal transmission line 1-4 is used to transmit the three-dimensional geographic coordinate information of the corresponding concrete block 1-1 fed back by the gyroscope positioning system 1-2.

[0046] Preferably, each monitoring chain is perpendicular to the riverbank direction. The number of monitoring chains is determined based on the monitoring range, and the spacing is set based on the preliminary analysis results of the current riverbank topography, historical bank collapse risks, and erosion and sedimentation changes. Generally, one monitoring chain is set at 1 km, with appropriate densification in high-risk river sections.

[0047] Preferably, the power supply line 1-3 and the signal transmission line 1-4 are surrounded by a connecting sleeve 1-5. The connecting sleeve 1-5 is made of flexible material, providing waterproof and corrosion-resistant protection for the power supply line 1-3 and the signal transmission line 1-4. The length of the connecting sleeve 1-5 ensures that the connected concrete blocks 1-1 can move freely with changes in the slope terrain. The power supply line 1-3 and the signal transmission line 1-4 are jointly wrapped by the connecting sleeve 1-5, connecting each concrete block 1-1 in series.

[0048] Each monitoring chain consists of several concrete blocks 1-1 pre-embedded with gyroscope positioning systems 1-2. The number of concrete blocks 1-1 is determined according to the slope topography. Generally, one concrete block 1-1 is placed every 5-10 meters in each monitoring chain. The concrete blocks 1-1 are connected by connecting sleeves 1-5 to form the monitoring chain. Each connecting sleeve 1-5 should have a 5-meter margin to ensure that the concrete blocks 1-1 do not move with the terrain during operation. Simultaneously, the connecting sleeve 1-5 should have a tensile strength greater than 1.2KN to fully bear the force between the concrete blocks 1-1 during installation, maintenance, and recovery. Furthermore, the margin of the power supply line 1-3 and signal transmission line 1-4 should be at least 1 meter greater than the connecting sleeve 1-5 and be easily expandable to ensure that the force between the concrete blocks 1-1 is fully borne by the connecting sleeve 1-5.

[0049] The dimensions of the concrete block 1-1 are determined based on the near-shore flow velocity of the river section, the stability coefficient of the concrete block's movement, the unit weight of the concrete block, and the unit weight of water.

[0050] Preferably, the formula for calculating the size of each concrete block 1-1 is as follows:

[0051]

[0052] In the formula,

[0053] d represents the equivalent diameter of concrete block 1-1, in meters, converted to a spherical shape.

[0054] V represents the flow velocity of the river, measured in m / s.

[0055] g represents the acceleration due to gravity, measured in m / s². 2 ,

[0056] C represents the kinematic stability coefficient of the concrete block 1-1.

[0057] γ s This indicates the unit weight of concrete block 1-1, in kN / m³. 3 ,

[0058] γ represents the specific gravity of water in the river channel, measured in kN / m³. 3 .

[0059] The transmission system 2 is located on the shore corresponding to each monitoring chain. It is used to provide power to the gyroscope positioning system 1-2, receive signals from the gyroscope positioning system 1-2, and transmit the received signals to the analysis system 3.

[0060] Preferably, the transmission system 2 includes a power supply 2-1, a signal receiving device 2-2, and a signal transmission device 2-3. The power supply 2-1 is used to provide power to the gyroscope positioning system 1-2. The signal receiving device 2-2 is used to receive the three-dimensional geographic coordinate information sent by the gyroscope positioning system 1-2. The signal transmission device 2-3 is used to transmit the received three-dimensional geographic coordinate information to the analysis system 3.

[0061] Specifically, the power source 2-1 is a solar-powered light pole erected on the shore. Since the operating power of the gyroscope positioning system 1-2 in the monitoring chain is very small, it can be centrally powered by a nearby lighting power supply system connected to the shoreline, or a simple solar-powered light pole can be erected on the shoreline to power each monitoring chain.

[0062] Because the monitoring chain uses a wired signal transmission method, it overcomes the poor signal transmission shortcomings of the gyroscope positioning system 1-2 in deep water areas, ensuring long-term effectiveness. After the signal is transmitted to the onshore equipment, it can be transmitted to the analysis system 3 via the Internet.

[0063] The analysis system 3 is used to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block 1-1 fed back by each gyroscope positioning system 1-2, simulate the bank slope topographic cloud map based on the three-dimensional point cloud, then cut the cross section of the topographic cloud map, calculate the maximum comprehensive slope ratio in each cross section, and issue an alarm when the maximum comprehensive slope ratio is greater than the warning slope ratio, thereby realizing real-time monitoring and early warning of a large area of ​​riverbank slope.

[0064] Preferably, the analysis system 3 includes a server 3-1, a database 3-2, a bank slope cloud map simulation and analysis early warning program 3-3, and a client 3-4.

[0065] The slope cloud map simulation and analysis early warning program 3-3 uses the VB programming language to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block 1-1 fed back by the gyroscope positioning system 1-2, and simulates the slope topographic cloud map based on the three-dimensional point cloud.

[0066] The server 3-1 is equipped with a database 3-2 and a slope cloud map simulation, analysis and early warning program 3-3. It is connected to the Internet along with the transmission system 2. It cuts the cross-section of the topographic cloud map, calculates the maximum comprehensive slope ratio in each cross-section, and compares the maximum comprehensive slope ratio with the early warning slope ratio.

[0067] The client 3-4 is used to display the real-time changes of the bank slope topographic cloud map, display the comparison results between the maximum comprehensive slope ratio and the warning slope ratio, and issue warnings based on the comparison results.

[0068] Specifically, the warning slope ratio is calculated based on the hydrogeological conditions of the corresponding riverbank slope.

[0069] Server 3-1 is equipped with database 3-2 and a bank slope cloud map simulation and analysis early warning program 3-3. The three-dimensional coordinate information of all received concrete blocks 1-1 is input into database 3-2. Through the program, the bank slope topography is simulated in real time, and the bank slope anti-sliding stability safety factor can be calculated in real time. The maximum comprehensive slope ratio in the bank slope cross section is searched and compared with the bank slope early warning slope ratio determined by comprehensive calculation of the hydrogeological conditions of the corresponding river section. The data can be updated daily. When the maximum comprehensive slope ratio of the bank slope is greater than the early warning slope ratio, the result will be displayed on client 3-4 to issue an early warning, and the data update frequency will be increased.

[0070] In this embodiment, a large-scale river channel with a length of 10km was used. Fifteen monitoring chains were deployed based on the specific conditions of the riverbank. The monitoring chains in dangerous sections were spaced 500m apart, while those in general sections were spaced 1000m apart. The monitoring chains were arranged perpendicular to the shoreline, with the upper end positioned above the shoal lip and the lower end extending into the deep water. Each monitoring chain consisted of nine concrete blocks 1-1 pre-embedded with gyroscope positioning systems 1-2. The concrete blocks 1-1 were connected by connecting sleeves 1-5. Based on the formula for calculating the size of the concrete blocks 1-1, each block was designed as a cube with a side length of 30cm, allowing it to adhere closely to the bank slope and move with it without being activated by water flow forces. The connecting sleeves 1-5 between the concrete blocks 1-1 were 15m long, ensuring that the concrete blocks 1-1 could move freely with changes in the bank slope topography. Each power supply line 1-3 and signal transmission line 1-4 is 16m long to ensure that the force when lifting the concrete block 1-1 during maintenance is entirely borne by the connecting sleeve 1-5.

[0071] In this embodiment, the analysis system collected three-dimensional geographic coordinate information for 135 positioning points, with coordinates (x... ij ,y ij ,z ij ), x ij y ij z ij This represents the x, y, and z coordinates of the j-th location point on the i-th monitoring chain; a surface is generated from 135 coordinate points, and 15 cross-sections are generated from the surface, one example of which is shown below. Figure 6 As shown, this cross-section consists of 8 short lines, with slope ratios of i1, i2, i3, i4, i5, i6, i7, and i8 respectively. The overall slope ratio i of this cross-section is calculated as follows:

[0072]

[0073] Calculations show that the overall slope ratio of this section is 1:1.8. The overall slope ratios of the other 14 sections are 1:2.6, 1:3.0, 1:3.0, 1:2.8, 1:2.4, 1:3.2, 1:3.2, 1:3.0, 1:3.2, 1:2.6, 1:2.0, 1:2.8, 1:2.4, and 1:2.5. The maximum overall slope ratio is 1:1.8.

[0074] In this embodiment, the calculated warning slope ratio based on the hydrogeological conditions of the riverbank is 1:2.5. When the maximum comprehensive slope ratio in the riverbank cross-section exceeds 1:2.5, client 3-4 issues an alarm, enabling real-time monitoring and early warning of the riverbank over a large area. In this analysis, the maximum comprehensive slope ratio exceeds the warning value, triggering an alarm.

[0075] The real-time monitoring and early warning device for riverbank collapse of the present invention can monitor and provide early warning of riverbank slopes over a large area in real time, overcoming the lag of general monitoring methods.

[0076] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A real-time monitoring and early warning device for riverbank collapse, characterized in that: It includes a monitoring system (1), a transmission system (2), and an analysis system (3); The monitoring system (1) includes multiple monitoring chains arranged at intervals on the riverbank. The lower end of each monitoring chain extends to the deep pool at the bottom of the river and the upper end extends to the lip of the riverbank. Each monitoring chain includes several concrete blocks (1-1) arranged at intervals. Each concrete block (1-1) can adhere to the riverbank under the action of water flow and move with the bank. Each concrete block (1-1) has a gyroscope positioning system (1-2) pre-embedded inside. Adjacent gyroscope positioning systems (1-2) are connected by a retractable power supply line (1-3) and a signal transmission line (1-4). The power supply line (1-3) is used to transmit power to the gyroscope positioning system (1-2), and the signal transmission line (1-4) is used to transmit the three-dimensional geographic coordinate information of the corresponding concrete block (1-1) fed back by the gyroscope positioning system (1-2). The transmission system (2) is located on the shore corresponding to each monitoring chain. It is used to provide power to the gyroscope positioning system (1-2), receive signals from the gyroscope positioning system (1-2), and transmit the received signals to the analysis system (3). The analysis system (3) is used to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block (1-1) fed back by each gyroscope positioning system (1-2), simulate the topographic cloud map of the riverbank based on the three-dimensional point cloud, and then cut the cross section of the topographic cloud map to calculate the maximum comprehensive slope ratio in each cross section. When the maximum comprehensive slope ratio is greater than the warning slope ratio, an alarm is issued, thereby realizing real-time monitoring and early warning of a large-scale riverbank.

2. The real-time monitoring and early warning device for riverbank collapse according to claim 1, characterized in that: The formula for calculating the size of each concrete block (1-1) is as follows: In the formula, d represents the equivalent diameter of the concrete block (1-1), in meters, calculated based on a spherical shape. V represents the flow velocity of the river, measured in m / s. g represents the acceleration due to gravity, measured in m / s². 2 , C represents the motion stability coefficient of the concrete block (1-1). γ s This indicates the unit weight of the concrete block (1-1), in kN / m³. 3 , γ represents the specific gravity of water in the river channel, measured in kN / m³. 3 .

3. The real-time monitoring and early warning device for riverbank collapse according to claim 2, characterized in that: Each of the aforementioned monitoring chains is perpendicular to the direction of the riverbank.

4. The real-time monitoring and early warning device for riverbank collapse according to claim 3, characterized in that: The power supply line (1-3) and signal transmission line (1-4) are surrounded by a connecting sleeve (1-5). The connecting sleeve (1-5) is made of a flexible material that provides waterproof and corrosion protection. The length of the connecting sleeve (1-5) ensures that the connected concrete block (1-1) can move freely with the changes in the slope terrain.

5. The real-time monitoring and early warning device for riverbank collapse according to claim 1, characterized in that: The transmission system (2) includes a power supply (2-1), a signal receiving device (2-2), and a signal transmission device (2-3). The power supply (2-1) is used to provide power to the gyroscope positioning system (1-2). The signal receiving device (2-2) is used to receive the three-dimensional geographic coordinate information sent by the gyroscope positioning system (1-2). The signal transmission device (2-3) is used to transmit the received three-dimensional geographic coordinate information to the analysis system (3).

6. The real-time monitoring and early warning device for riverbank collapse according to claim 5, characterized in that: The power source (2-1) is a solar-powered light pole erected on the shore.

7. The real-time monitoring and early warning device for riverbank collapse according to claim 1, characterized in that: The analysis system (3) includes a server (3-1), a database (3-2), a bank slope cloud map simulation and analysis early warning program (3-3), and a client (3-4); The slope cloud map simulation and analysis early warning program (3-3) uses VB programming language to generate a three-dimensional point cloud from the three-dimensional geographic coordinate information of the corresponding concrete block (1-1) fed back by the gyroscope positioning system (1-2), and simulates the slope topographic cloud map based on the three-dimensional point cloud. The server (3-1) is equipped with a database (3-2) and a slope cloud map simulation and analysis early warning program (3-3). It is located in the Internet along with the transmission system (2). It cuts the cross section of the topographic cloud map, calculates the maximum comprehensive slope ratio in each cross section, and compares the size between the maximum comprehensive slope ratio and the early warning slope ratio. The client (3-4) is used to display the real-time changes of the bank slope topographic cloud map, display the comparison results between the maximum comprehensive slope ratio and the warning slope ratio, and issue warnings based on the comparison results.

8. The real-time monitoring and early warning device for riverbank collapse according to claim 7, characterized in that: The warning slope ratio is calculated based on the hydrogeological conditions of the corresponding riverbank slope.

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