Coast protection method and system

Abstract

The invention provides a coast protection method and system, and the method comprises the steps: obtaining the current environment parameters, determining the storm surge characteristics in the current environment according to the current environment parameters, and enabling the storm surge characteristics to comprise the wave climbing height and the wave overtopping amount; determining a target protection height required in the current environment according to the storm surge characteristics based on a pre-constructed multiple regression analysis model; and the lifting angle of the lifting protection device is adjusted according to the target protection height, so that the highest point of the head wave face of the lifting protection device is larger than the target protection height. The lifting protection device can achieve automatic lifting according to the current sea wave condition to achieve the effect of a protection embankment, maintain the water surface in a port to be calm and prevent waves from invading the port or the coast; and the adjustable lifting protection device can also play a role in preventing sedimentation of the harbor basin and erosion of waves to the shoreline.

Description

Technical Field

[0001] The present invention relates to the technical field of coastal protection, and in particular to a coastal protection method and system. Background Art

[0002] At present, breakwaters are important port hydraulic structures. Their function is to maintain the calmness of the water surface in the port and to prevent waves from invading the port or the coast so that ships can safely moor and operate; breakwaters can also prevent siltation in the port and erosion of the coastline by waves. Breakwaters are an important part of artificially protected coastal ports; however, the angle of breakwaters cannot be adjusted at present, which often causes serious siltation in the port, making the water depth in the port shallower and affecting the use of the port. Theoretically, the top elevation of the slope embankment is high enough to completely avoid overtopping, but the economic cost is very huge, and there are certain requirements for the foundation, which may increase the construction content and construction difficulty. In view of cost considerations, traditional breakwaters will allow a small amount of overtopping; if the breakwater is built too low, the overtopping amount is large, which will lead to safety accidents. Summary of the invention

[0003] The embodiment of the present invention provides a coastal protection method and system to solve the problems existing in the related technologies. The technical solution is as follows:

[0004] In a first aspect, an embodiment of the present invention provides a coastal protection method, comprising:

[0005] Obtain current environmental parameters, and determine storm surge characteristics under the current environment according to the current environmental parameters. Storm surge characteristics include wave height and overtopping amount;

[0006] Determine the target protection height required in the current environment based on the storm surge characteristics based on the pre-built multivariate regression analysis model;

[0007] Adjust the lifting angle of the lifting protection device according to the target protection height so that the highest point of the wave-facing surface of the lifting protection device is greater than the target protection height.

[0008] In one embodiment, determining storm surge characteristics under the current environment according to the current environmental parameters includes:

[0009] Obtain the roughness of the slope surface of the lifting protection device, and determine the roughness permeability coefficient according to the influence of the roughness on the water flow resistance;

[0010] Determine the wind speed under the current environment according to the current environmental parameters, and determine the wind speed coefficient according to the influence of wind speed on wave height;

[0011] The height at which the wave rises to the lifting protection device is predicted based on the roughness coefficient and the wind speed coefficient to obtain the wave height.

[0012] In one embodiment, determining storm surge characteristics under the current environment according to the current environmental parameters includes:

[0013] Determine the tidal data under the current environment according to the current environmental parameters, and analyze the wave elements according to the tidal data to obtain the wave characteristics, which include the effective wave height, average period, and spectrum peak period;

[0014] Based on the specified overtopping formula and the wave characteristics, the wave water volume when the wave passes over the breast wall of the dike crest is simulated to obtain the overtopping volume.

[0015] In one embodiment, it further includes:

[0016] Obtain historical storm surge events and determine the key factors associated with breakwater height based on historical storm surge events; the key factors include overtopping and wave run-up;

[0017] The key factors are used as the input feature vectors of the multiple regression analysis model, and the breakwater height is used as the output feature vector of the multiple regression analysis model. The relationship between the key factors and the breakwater height is evaluated based on the preset optimization algorithm to determine the multiple regression analysis model.

[0018] In one embodiment, it further includes:

[0019] Obtain meteorological data and determine the storm surge level based on the meteorological data;

[0020] Based on a preset mapping relationship table, the lifting angle corresponding to the storm surge level is searched, and the lifting protection device is controlled to be lifted according to the lifting angle;

[0021] When the storm surge level exceeds the preset warning level, the tightening device located in front of the lifting protection device is controlled to tighten the rope connected to the lifting protection device to enhance the impact resistance of the lifting protection device.

[0022] In a second aspect, an embodiment of the present invention provides a coastal protection system, including:

[0023] Control platform to implement the coastal protection method as described above;

[0024] The lifting protection device is connected to the control platform and is used to perform lifting or lowering operations.

[0025] In one embodiment, the lifting protection device comprises:

[0026] main body;

[0027] a gear shaft connected to one end of the main body;

[0028] The first driving mechanism is connected to the gear shaft and is used to drive the gear shaft to rotate so that the main body is lifted or dropped with the gear shaft as the origin.

[0029] In one embodiment, it further includes:

[0030] The telescopic support rod has one end fixed behind the wave-receiving surface of the main body and the other end fixed to the wave-receiving surface of the main body. The telescopic support rod drives the main body to be lifted or lowered through its own telescopic activity.

[0031] In one embodiment, it further includes:

[0032] The winch is fixed in front of the wave-facing surface of the main body. The winch leads out a rope connected to the main body. The winch is used to tighten the rope to enhance the impact resistance of the main body.

[0033] In one embodiment, it further includes:

[0034] The limit device has a limit pin and a second driving mechanism. The second driving mechanism drives the limit pin to be lifted up or lowered. The limit pin is located at a position directly opposite to the gear shaft. When the limit pin is lifted up, the limit pin is inserted into a pin insertion hole provided on the gear shaft to limit the gear shaft from continuing to move.

[0035] The advantages or beneficial effects of the above technical solution include at least:

[0036] The present invention can determine the storm surge characteristics under the current environment according to the current environmental parameters. The storm surge characteristics are mainly reflected in the wave height and the overtopping amount. The target protection height corresponding to the storm surge characteristics under the current environment is determined by a multivariate regression analysis model, and the lifting angle of the lifting protection device is adjusted according to the target protection height, so that the lifting protection device can be automatically lifted and lowered according to the current wave conditions to achieve the effect of a protective embankment, maintain the calmness of the water surface in the port and defend against the invasion of waves on the port or the coast; and the adjustable lifting protection device of the present invention can also prevent the siltation of the port and the erosion of the coastline by waves.

[0037] The above summary is for illustrative purposes only 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 accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present invention and should not be regarded as limiting the scope of the present invention.

[0039] Figure 1 It is a schematic diagram of the process of the coastal protection method of the present invention;

[0040] Figure 2It is a schematic diagram of a control platform module of the coastal protection system of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the lifting protection device of the present invention;

[0042] Figure 4 It is a schematic diagram of the structure of the lifting protection device of the present invention when it is lifted;

[0043] Figure 5 It is a schematic diagram of the structure of the lifting protection device of the present invention when it is lifted and tightened by the rope;

[0044] Figure 6 It is a schematic diagram of the top view of the lifting protection device of the present invention when it is lifted;

[0045] Figure 7 It is a schematic diagram of the structure of the limiting device of the present invention;

[0046] Figure 8 This is a schematic diagram of the lifting protection device of the present invention being arranged on the top of the breakwater.

[0047] In the figure: 1. main body; 11. rope hook; 2. gear shaft; 21. pin socket; 3. first drive mechanism; 4. support rod limit hole; 5. telescopic support rod; 6. rotating support rod; 7. winch; 8. limit device; 81. limit pin; 82. second drive mechanism; 9. rope. DETAILED DESCRIPTION

[0048] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0049] At present, breakwaters are important port hydraulic structures. Their function is to maintain the calmness of the water surface in the port and to prevent waves from invading the port or the coast so that ships can safely moor and operate; breakwaters can also prevent siltation in the port and erosion of the coastline by waves. Breakwaters are an important part of artificially protected coastal ports; however, the angle of breakwaters cannot be adjusted at present, which often causes serious siltation in the port, making the water depth in the port shallower and affecting the use of the port. Theoretically, the top elevation of the slope embankment is high enough to completely avoid overtopping, but the economic cost is very huge, and there are certain requirements for the foundation, which may increase the construction content and construction difficulty. In view of cost considerations, traditional breakwaters will allow a small amount of overtopping; if the breakwater is built too low, the overtopping amount is large, which will lead to safety accidents.

[0050] In order to solve the above problems, an embodiment of the present invention provides a coastal protection method, which can automatically adjust the lifting height of the lifting protection device according to the current wave conditions, thereby achieving different degrees of wave protection effects at a limited cost. Figure 1 As shown, the coastal protection methods specifically include:

[0051] Step S1: obtaining current environmental parameters, and determining storm surge characteristics under the current environment according to the current environmental parameters, wherein the storm surge characteristics include wave height and overtopping.

[0052] Current environmental parameters include meteorological data and tidal data. Meteorological data can be obtained from the meteorological forecast center or detected in real time through various sensors. Meteorological data may include wind speed, air pressure, rainfall, etc. Tidal data can be obtained from the marine environment forecast center or detected in real time through various sensors. Tidal data mainly records changes in sea level.

[0053] It should be noted that wave run-up refers to the highest position on the surface of a structure when the wave crest part of the wave encounters the coastal structure. The method for calculating wave run-up in this embodiment includes:

[0054] Step S11: Obtain the surface roughness of the slope of the lifting protection device, and determine the roughness permeability coefficient according to the influence of the slope roughness on the water flow resistance.

[0055] It should be noted that in the calculation of wave run-up, the roughness coefficient KΔ characterizes the effect of the roughness of the slope surface of the lifting protection device on the wave run-up. Generally speaking, the rougher the boundary surface, the greater the roughness; the smoother the boundary surface, the smaller the roughness.

[0056] In practical applications, the rough permeability coefficient is usually obtained through engineering design specifications or related literature. Different face protection structures will have different rough permeability coefficient values. For example, in the seawall engineering design specifications, the rough permeability coefficient values ​​corresponding to different types of face protection structures may be provided. For example, the rough permeability coefficient of concrete face protection is usually 0.9.

[0057] In the calculation of wave run-up, the roughness permeability coefficient KΔ is used to adjust the wave run-up value to reflect the influence of different slope protection structures on wave run-up.

[0058] Step S12: determining the wind speed in the current environment according to the current environmental parameters, and determining the wind speed coefficient according to the influence of the wind speed on the wave height.

[0059] It should be noted that in the calculation of wave run-up, the wind speed coefficient KV is a coefficient related to the wind speed V, which is an empirical or semi-empirical parameter that takes into account the effect of wind on wave run-up. The wind speed coefficient KV is usually derived based on historical data, experimental results or theoretical analysis, and is used to quantify the degree of influence of wind speed on wave run-up.

[0060] As shown in Table 1, the present embodiment may determine the conversion table between wind speed and wind speed coefficient in advance according to historical data, experimental results, etc., and Table 1 records the ratio V / C between wind speed and wave speed, and the corresponding relationship between wind speed coefficients. After obtaining meteorological data, the present embodiment determines the wind speed according to the meteorological data, determines the wave speed according to the tidal data, calculates the ratio V / C of the wind speed and the wave speed, and searches for the wind speed coefficient KV corresponding to the ratio V / C of the wind speed and the wave speed according to Table 1.

[0061] Table 1 Wind speed coefficient KV

[0062]

[0063] It should be noted that the wave speed C = L / T (m / s), where L is the wavelength, which is the distance between two consecutive wave crests (or wave troughs) along the direction of wave propagation, and T is the period, which refers to the time required for two consecutive wave crests (or wave troughs) to pass the same point.

[0064] Step S13: predicting the height at which the wave will rise to the lifting protection device under the wind speed according to the rough permeability coefficient and the wind speed coefficient, and obtaining the wave climbing height.

[0065] Specifically, the calculation formula for calculating the wave height in this embodiment is:

[0066] R 1％ =K Δ K V R1H 1％ ;

[0067] R1%: is the climbing height with a cumulative frequency of 1% (unit: meter).

[0068] KΔ: It is the rough permeability coefficient related to the type of slope protection structure. For conventional concrete and concrete protection, the value is 0.9.

[0069] KV: It is a coefficient related to wind speed V and can be determined through relevant tables.

[0070] R1: It is the reference height climbing value under specific conditions (such as no wind or standard conditions); specifically, it is the wave height climbing value (unit: meter) for the slope embankment top without breast wall when KΔ=1 and H=1 meter. This value can be determined by referring to the tables and formulas in the specification. In addition, in the calculation of wave height climbing, Potain (also known as wave steepness, taken as L / H1%, where L is the wavelength corresponding to the average wave period) is used to quantify the influence of wave energy distribution and wave shape, which in turn affects the result of wave height climbing. Potain is used as a coefficient or an adjustment factor to correct the reference height climbing value R1 to adapt to different wave conditions.

[0071] H1%: is the wave height with a cumulative frequency of 1% (in meters), meaning that among all observed wave heights, 99% of the wave heights are below this value, while only 1% of the wave heights reach or exceed this value. In other words, H1% is a statistical measure used to describe a specific percentile in the wave height distribution.

[0072] The specific method for determining the overtopping amount under the current environment based on the current environmental parameters is as follows:

[0073] Step S14: Analyze wave elements according to tidal data to obtain wave characteristics, which include effective wave height, average period, spectrum peak period, etc.

[0074] Step S15: Based on the specified overtopping formula and the wave characteristics, the wave water volume when the wave passes over the breast wall of the embankment crest is simulated to obtain the overtopping volume.

[0075] Specifically, the calculation formula for overtopping is:

[0076]

[0077] The meanings of the parameters are as follows:

[0078] Q: overtopping, the volume of overtopping water per unit time and per unit embankment width [m3 / (sm)];

[0079] Hc: Height of the dike top above the still water surface (m).

[0080] Hc′: Height of breast wall above still water surface (m).

[0081] b1: Horizontal distance from the base of the breast wall to the toe of the slope embankment.

[0082] m: slope gradient.

[0083] d: Still water surface level.

[0084] B: Empirical coefficient, which can be selected according to the corresponding slope gradient in Table 2.

[0085] H 1 / 3 : Refers to significant wave height, which represents the average value of the wave height of the largest 1 / 3 after the wave heights in a given wave train are arranged in descending order.

[0086] K A : The influence coefficient of the protective structure is an empirical value.

[0087] T p : Spectral peak period, Tp=1.33T0.

[0088] Th: Hyperbolic tangent function operator.

[0089] Table 2 Empirical coefficient B

[0090] m 1.5 2.0 3.0 B 0.6 0.45 0.38

[0091] It should be noted that the breast wall mentioned above is a device located above a conventional sloped breakwater for preventing wave overtopping, etc.; assuming that the lifting protection device is used above the breakwater in this embodiment, it can basically replace the effect of the breast wall. Therefore, when calculating overtopping normally, this embodiment adopts the overtopping calculation formula of the breakwater with a breast wall to more accurately predict the overtopping amount under different wave conditions.

[0092] Step S2: Determine the target protection height required in the current environment according to the storm surge characteristics based on the pre-built multiple regression analysis model.

[0093] Among them, the purpose of the multivariate regression analysis model is to explore the relationship between storm surge characteristics (such as water level rise and duration) and the required height of the breakwater.

[0094] It should be noted that this embodiment requires the pre-construction of a multiple regression analysis model, and the construction method thereof is as follows:

[0095] Step S21: Obtain historical storm surge events.

[0096] It should be noted that historical storm surge events record the time of storms that occurred in historical time, and also record parameters such as wind speed, air pressure, rainfall, and sea level during the storm.

[0097] Step S22: The collected historical storm surge events are stored in a unified database, using a structured data storage solution to facilitate subsequent query and analysis, and the data are organized and stored in a predefined format and structure.

[0098] Specifically, each table used for storage has fixed columns (fields) and rows (records). Each column has a defined data type and constraint to ensure data consistency and accuracy. This normalization process reduces data redundancy and improves data consistency and integrity. Data access permissions can also be defined to control data access by different users. It also supports data backup and recovery mechanisms to prevent data loss. In the subsequent data use process, it also supports complex query operations such as joins (JOIN), groupings (GROUP BY) and aggregations (SUM, AVG, etc.), which helps in in-depth data mining and analysis.

[0099] Step S23: Determine key factors associated with breakwater height based on historical storm surge events; key factors include overtopping and wave run-up.

[0100] This embodiment performs feature selection through statistical testing, expert opinions or feature importance assessment methods to determine which key factors have a significant impact on the breakwater height. This embodiment determines that the key factors include overtopping amount and wave run-up. The overtopping amount and wave run-up are used as input feature vectors of the multiple regression analysis model, and the breakwater height is used as the output feature vector of the multiple regression analysis model. The relationship between the key factors and the breakwater height is evaluated based on a preset optimization algorithm to determine the multiple regression analysis model.

[0101] The multiple regression analysis model is a model for predicting the relationship between a dependent variable (response variable), namely the breakwater height, and multiple independent variables (explanatory variables). These multiple explanatory variables include the calculated overtopping amount and climbing height, and factors such as wind speed, water level rise, and storm surge duration can also be added according to local actual conditions.

[0102] The expression of the multivariate linear regression model in this embodiment is:

[0103] f(x)=k T x+b

[0104] Where x is the input feature vector, f(x) is the predicted breakwater height, k is the feature weight, and b is the intercept. Use the least squares method or other optimization algorithms to estimate the parameters k and b of the multiple regression analysis model.

[0105] After that, the multiple regression analysis model is evaluated, and the goodness of fit and predictive ability of the multiple regression analysis model are evaluated by cross-validation, AIC, BIC and other methods. According to the evaluation results of the multiple regression analysis model, the multiple regression analysis model needs to be optimized, such as using regularization methods such as Ridge Regression, Lasso Regression or Elastic Net Regression to deal with the multicollinearity problem between features, or further improving the performance of the multiple regression analysis model through feature engineering. Machine learning algorithms (such as neural networks) can also be introduced for more complex nonlinear association analysis.

[0106] After determining the overtopping amount and wave height under the current environment through the current environmental parameters, this embodiment inputs the overtopping amount and wave height into the multivariate regression analysis model after the above optimization. The multivariate regression analysis model outputs the corresponding breakwater height, and the output breakwater height is determined as the target protection height.

[0107] Step S3: adjusting the lifting angle of the lifting protection device according to the target protection height, so that the highest point of the wave-facing surface of the lifting protection device is greater than the target protection height.

[0108] The lifting protection device of this embodiment is a protection device with adjustable lifting height. Under different target protection heights, the lifting angle of the lifting protection device is different, so that the lifted lifting protection device can use its wave-facing surface to resist sea waves and prevent seawater from crossing the lifting protection device and invading the port or coast.

[0109] It should be noted that if Figure 3 As shown, the liftable lifting protection device can be arranged on the coastal slope to directly resist the coastal waves, or as shown in Figure 8 As shown, the lifting protection device can also be arranged on the upper layer of the breakwater to achieve the same effect as the breast wall.

[0110] In another embodiment, the coastal protection method of the present invention can also be used in combination with a wind and wave forecasting system to determine the lifting time and lowering time of the lifting protection device. Specifically:

[0111] Obtain meteorological data and determine the storm surge level based on the meteorological data;

[0112] Based on a preset mapping relationship table, the lifting angle corresponding to the storm surge level is searched, and the lifting protection device is controlled to be lifted according to the lifting angle;

[0113] When the storm surge level exceeds the preset warning level, the tightening device located in front of the lifting protection device is controlled to tighten the rope 9 connected to the lifting protection device to enhance the impact resistance of the lifting protection device.

[0114] It should be noted that according to the description of the classification of high tide level exceeding warning level in the national storm surge classification standard, when the warning tide level value used by the tide gauge station is a single value, the high tide level exceeding warning level is divided into four levels: particularly serious, serious, relatively serious and general, corresponding to levels Ⅰ, Ⅱ, Ⅲ and Ⅳ respectively, based on the value of the maximum high tide level exceeding the local warning tide level. When the warning tide level values ​​used by the tide gauge station are blue warning tide level, yellow warning tide level, orange warning tide level and red warning tide level, the high tide level exceeding warning level is divided into four levels: particularly serious, serious, relatively serious and general, corresponding to levels Ⅰ, Ⅱ, Ⅲ and Ⅳ respectively, based on the warning tide level level reached or exceeded by the maximum high tide level. If the approved four-color warning tide level of the representative station does not have a yellow warning tide level value, there is no level Ⅳ; if there is no orange warning tide level value, there is no level Ⅲ.

[0115] According to the numerical forecast system of the National Marine Environmental Forecast Center or the forecast value of the China Marine Forecast Network, the lifting and protection device is activated when the storm surge reaches level I. The lifting and protection device can be opened to 30°, 45°, and 60° for level I, II, and III storm surges, respectively. If the weather forecast system finds that there will be wind and waves that exceed the current breakwater's bearing capacity, such as a strong level IV storm surge, the winch 7 located in front of the wave-facing surface of the lifting and protection device can be used. The winch 7 is connected to the lifting and protection device through a steel rope, and the taut rope 9 provides additional tension for the lifting and protection device, so as to better cope with wind and wave attacks.

[0116] When the storm surge does not reach Level I, the lifting protection device is not opened and is in a state parallel to the ground. At this time, seawater can flow automatically through the lifting protection device and carry away the silt accumulated in front of the lifting protection device during the flow, thereby avoiding the accumulation of silt and affecting the subsequent wave defense effect.

[0117] Another embodiment of the present invention provides a coastal protection system, the system comprising:

[0118] Control platform to implement the coastal protection method as described above;

[0119] The lifting protection device is connected to the control platform and is used to perform lifting or lowering operations according to the instructions issued by the control platform.

[0120] Among them, Figure 2 As shown, the control platform includes a data acquisition module for collecting current environmental parameters; a data storage module for storing the collected data in a unified database; an algorithm analysis module for developing a multiple regression analysis model and determining the relationship between storm surge characteristics and the required height of the breakwater based on the multiple regression analysis model; and a visualization conclusion module for providing a graphical user interface, which displays the expected changes in the protection effect under different storm characteristics and different breakwater heights through the graphical user interface, thereby deriving the required lifting height of the lifting protection device.

[0121] It should be noted that the functions performed by each module in the control platform can be found in the corresponding description in the above-mentioned coastal protection method, and will not be repeated here.

[0122] like Figures 3-4 As shown, the lifting protection device in the coastal protection system at least includes a main body 1, a gear shaft 2 and a first driving mechanism 3. Specifically:

[0123] The main body 1, the shape and structure of the main body 1 can be adjusted according to the actual situation of the specific coast. For example: the main body 1 can adopt a full steel structure, with a length of 5m, a width of 2m, a thickness of 0.2m, and a total weight of 1.57 tons.

[0124] One end of the main body 1 is connected to the gear shaft 2, and the main body 1 can swing with the gear shaft 2 as the origin.

[0125] The first driving mechanism 3 is connected to the gear shaft 2 and is used for driving the gear shaft 2 to rotate so that the main body 1 is lifted or lowered with the gear shaft 2 as the origin.

[0126] In this embodiment, the first driving mechanism 3 is a gear transmission mechanism, including a plurality of mutually meshing gears and a motor for driving the gears to rotate. The gears in the gear transmission mechanism mesh with the teeth on the gear shaft 2, and the motor drives the gear shaft 2 to rotate, thereby realizing the lifting and lowering action of the main body 1.

[0127] In order to improve the wave resistance of the main body 1, a telescopic support rod 5 is provided on the wave-receiving surface of the main body 1. One end of the telescopic support rod 5 is fixed behind the wave-receiving surface of the main body 1, and the other end is connected to the wave-receiving surface of the main body 1. The telescopic support rod 5 supports the main body 1 through its own telescopic activity so that the main body 1 swings with the gear shaft 2 as the origin, thereby realizing the lifting or falling action of the main body 1.

[0128] Specifically, the telescopic support rod 5 is composed of two inner rods with small diameters and an outer rod with large diameters. These rods can be nested with each other, and the length of the overall telescopic support rod 5 can be controlled by the extension and retraction of the inner rods. A locking mechanism is provided at one end of the telescopic rod, such as a spiral lock, a buckle lock or a spring lock, which can fix the length of the telescopic rod to keep it stable during use.

[0129] In another embodiment, the telescopic support rod 5 can also match the corresponding support rod limiting hole 4, and the plurality of support rod limiting holes 4 are arranged horizontally. When the telescopic support rod 5 maintains a certain length, the telescopic support rod 5 is positioned on different support rod limiting holes 4, so that the lifting angle of the main body 1 can be changed, and the breakwater angle adjustment including 30°, 45° and 60° can be achieved. The telescopic support rod 5 is positioned in the support rod limiting hole 4, which can provide a certain support force for the main body 1 and improve the ability of the main body 1 to defend against waves.

[0130] like Figure 3 As shown, Figure 3 The lifting protection device is shown in the non-opened state, at which time the seawater can flow automatically and carry away the silt; Figure 4 The figure shows the state where the lifting protection device is raised, at which time the effect of resisting seawater is achieved.

[0131] like Figure 5 , Figure 6As shown, in order to further improve the wave resistance of the main body 1, a winch 7 may be provided in front of the wave-facing surface of the main body 1. The winch 7 is wound with a rope 9, and the main body 1 is provided with a rope hook 11. The rope 9 drawn from the winch 7 is connected to the rope hook 11 on the main body 1. The winch 7 tightens the rope 9 to provide a certain degree of tension for the main body 1, further improving the impact resistance of the main body 1. When the main body 1 adopts a full steel structure, is 5m long, 2m wide, 0.2m thick, and has a total weight of 1.57 tons, the parameters of the front winch 7 can be:

[0132] Rated tensile force power Speed Machine weight Wire rope diameter 1.5t 7.5kw 1440r / min 330kg 11mm

[0133] In order to ensure the normal operation of the winch 7, the inside of the winch 7 can be properly waterproofed and then placed on the seabed, or the winch 7 can be arranged on the shore in front of the wave-facing surface of the main body 1. The specific installation position of the winch 7 can be arranged according to actual conditions and will not be described in detail here.

[0134] Furthermore, a rotating support rod 6 can be provided between the winch 7 and the main body 1. One end of the rotating support rod 6 is fixed, and the rotating support rod 6 can be controlled by a motor or other driving device to rotate around a fixed point as an axis. The rope 9 led out from the winch 7 passes around the rotating support rod 6 and then connected to the main body 1. When the rope 9 needs to be used to provide tension for the main body 1, the rotating support rod 6 is controlled to rotate to a vertical state. The rotating support rod 6 plays a role in guiding the rope 9, thereby further improving the stability of the rope 9.

[0135] Further, such as Figure 7 As shown, a pin insertion hole 21 is also provided on the gear shaft 2, and a limiting device 8 is provided at a position opposite to the gear shaft 2. The limiting device 8 has a limiting pin 81 and a second driving mechanism 82 connected to the limiting pin 81. The second driving mechanism 82 can be a hydraulic device or a mechanical expansion spring, which is used to drive the limiting pin 81 to move toward the position of the pin insertion hole 21, or to move away from the pin insertion hole 21. When the gear shaft 2 drives the main body 1 to lift to a suitable angle, the second driving mechanism 82 drives the limiting pin 81 to lift up, so that the limiting pin 81 is inserted into the limiting pin 81 of the gear shaft 2 facing it, thereby limiting the movement of the gear shaft 2, and achieving the purpose of maintaining the current lifting angle of the main body 1; when the lifting height of the main body 1 needs to be adjusted, the second driving mechanism 82 is controlled to drive the limiting pin 81 to fall, so that the limiting pin 81 leaves the pin insertion hole 21 and moves away from the pin insertion hole 21. When the limiting pin 81 is completely separated from the pin insertion hole 21, the gear shaft 2 can continue to move to restore the lifting or falling action of the main body 1.

[0136] In order to improve the stability of the entire lifting protection device in this embodiment, after determining the area and material of the main body 1, it is necessary to test the main body 1, the telescopic support rod 5 for rear support, and the front rope 9 to ensure that the main body 1 has sufficient bearing capacity.

[0137] Specifically, according to the local typical wind and wave conditions and the usage scenarios of the lifting protection device, the front wave data of the lifting protection device is determined, and the water pressure is determined according to the "SL744-2016 Load Code for Hydraulic Structures", where the water pressure can be divided into hydrostatic pressure and wave pressure. According to the size of the wave pressure and the hydrostatic pressure, the material of the rear support and the front steel rope is selected to ensure that it has sufficient bearing capacity.

[0138] Among them, the hydrostatic pressure acting vertically on a point on the surface of the building (structure) should be calculated according to the formula:

[0139] p w =γ w H;

[0140] Where P w is the hydrostatic pressure at the calculation point, in kN / m 2 ; H is the effective water head at the calculation point (m), determined by the height difference between the calculation water level and the calculation point; γ w is the specific gravity of water, in kN / m 3 , using 9.81kN / m 3 , for rivers with a lot of sediment and seawater, it will be determined based on actual conditions.

[0141] For the wave pressure on the concrete monolithic or assembled single slope protection panel with a size of 1.5≤m≤5, it can be determined according to the resultant force calculated by the pressure intensity distribution:

[0142] Pm=K P K1K2K3γ w h s

[0143]

[0144] Where Pm is the maximum wave pressure intensity, unit is kN / m 2 ; K p is the frequency conversion coefficient, which is 1.35; coefficient; k2 coefficient, which is selected from Table 3 provided by the standard; k3 is the wave pressure relative intensity coefficient, which is selected from Table 4 provided by the standard; m is the slope coefficient of the single slope, when the slope foot is α, m is cotα; L m is the wavelength; h sis the effective wave height (m), which is equivalent to the wave height with a cumulative frequency of 14%. H14% means that in the wave train (generally greater than 100 waves), the cumulative frequency exceeding this wave height is 14%. When making statistics, the wave height can be divided into intervals first, and a frequency histogram can be made, and then a cumulative frequency curve (distribution curve) can be made, from which H14% can be obtained.

[0145] Table 3 k2 coefficient selection table

[0146] <![CDATA[L m / h s ]]> 10 15 20 25 35 <![CDATA[K2]]> 1.00 1.15 1.30 1.35 1.48

[0147] Table 4k3 coefficient selection table

[0148] <![CDATA[h s / m]]> 0.5 1.0 1.5 2.0 2.5 3.0 3.5 ≥4.0 <![CDATA[K3]]> 3.7 2.8 2.3 2.1 1.9 1.8 1.75 1.7

[0149] The structure of the lifting protection device in the embodiment of the present invention fully utilizes the advantage of adjustable angles, has little impact on the surrounding marine ecological environment, and can reduce the situation of changing the morphology of the natural coastline and the water flow pattern. When the wind and waves are small, the breakwater can be closed to allow the water to freely enter and exit the port to form an exchange, thereby achieving the hiding effect of the overall protection device. When the wind and waves are large and protection is required, the structure can be lifted and raised to different angles according to specific needs. In extreme weather, it can also be used with the front steel rope and winch 7 to provide a more stable pulling force to achieve a better protection effect.

[0150] Another embodiment of the present invention further provides an electronic device, the electronic device comprising: a memory and a processor, wherein the memory stores a computer program that can be run on the processor. When the processor executes the computer program, the coastal protection method in the above embodiment is implemented. The number of the memory and the processor can be one or more.

[0151] The electronic device also includes:

[0152] Communication interface, used to communicate with external devices and perform data exchange transmission.

[0153] If the memory, processor and communication interface are implemented independently, the memory, processor and communication interface can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0154] Optionally, in a specific implementation, if the memory, processor, and communication interface are integrated on a chip, the memory, processor, and communication interface can communicate with each other through an internal interface.

[0155] An embodiment of the present invention provides a computer-readable storage medium storing a computer program, which implements the method provided in the embodiment of the present invention when executed by a processor.

[0156] An embodiment of the present invention further provides a chip, which includes a processor for calling and executing instructions stored in the memory from the memory, so that a communication device equipped with the chip executes the method provided by the embodiment of the present invention.

[0157] An embodiment of the present invention also provides a chip, including: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory. When the code is executed, the processor is used to execute the method provided by the embodiment of the invention.

[0158] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. It is worth noting that the processor may be a processor supporting the advanced RISC machines (ARM) architecture.

[0159] Further, optionally, the above-mentioned memory may include a read-only memory and a random access memory, and may also include a non-volatile random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available. For example, static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus RAM (DR RAM).

[0160] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.

[0161] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0162] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0163] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A coastal protection method, characterized in that: include: Acquire current environmental parameters, and determine storm surge characteristics under the current environment according to the current environmental parameters, wherein the storm surge characteristics include wave height and overtopping; Determine the target protection height required in the current environment according to the storm surge characteristics based on a pre-built multivariate regression analysis model; The lifting angle of the lifting protection device is adjusted according to the target protection height so that the highest point of the wave-facing surface of the lifting protection device is greater than the target protection height.

2. The coastal protection method according to claim 1, characterized in that: Determining the storm surge characteristics under the current environment according to the current environmental parameters includes: Obtaining the roughness of the slope surface of the lifting protection device, and determining the roughness permeability coefficient according to the influence of the roughness on the water flow resistance; Determine the wind speed under the current environment according to the current environmental parameters, and determine the wind speed coefficient according to the influence of the wind speed on the wave height; The height at which the wave rises to the lifting protection device is predicted according to the rough permeability coefficient and the wind speed coefficient to obtain the wave climbing height.

3. The coastal protection method according to claim 1, characterized in that: Determining the storm surge characteristics under the current environment according to the current environmental parameters includes: Determine tide data under the current environment according to the current environment parameters, and analyze wave elements according to the tide data to obtain wave characteristics, wherein the wave characteristics include significant wave height, average period, and spectrum peak period; The overtopping amount is obtained by simulating the wave water volume when the wave passes over the breast wall of the dike crest based on the specified overtopping formula according to the wave characteristics.

4. The coastal protection method according to claim 1, characterized in that: Also includes: Acquire historical storm surge events, and determine key elements associated with the breakwater height according to the historical storm surge events; the key elements include the overtopping amount and the wave run-up; The key elements are used as input feature vectors of the multiple regression analysis model, the breakwater height is used as output feature vectors of the multiple regression analysis model, the relationship between the key elements and the breakwater height is evaluated based on a preset optimization algorithm, and the multiple regression analysis model is determined.

5. The coastal protection method according to claim 1, characterized in that: Also includes: obtaining meteorological data, and determining a storm surge level based on the meteorological data; Searching for the lifting angle corresponding to the storm surge level based on a preset mapping relationship table, and controlling the lifting of the lifting protection device according to the lifting angle; When the storm surge level exceeds a preset warning level, the tightening device located in front of the lifting protection device is controlled to tighten the rope connected to the lifting protection device to enhance the impact resistance of the lifting protection device.

6. A coastal protection system, characterized in that: include: A control platform for executing the coastal protection method as claimed in any one of claims 1 to 5; The lifting protection device is connected to the control platform and is used for performing lifting or lowering operations.

7. The coastal protection system according to claim 6, characterized in that: The lifting protection device comprises: main body; a gear shaft connected to one end of the main body; The first driving mechanism is connected to the gear shaft and is used to drive the gear shaft to rotate so that the main body is lifted or dropped with the gear shaft as the origin.

8. The coastal protection system according to claim 7, characterized in that: Also includes: A telescopic support rod has one end fixed behind the wave-receiving surface of the main body and the other end fixed to the wave-receiving surface of the main body. The telescopic support rod drives the main body to be lifted or lowered through its own telescopic movement.

9. The coastal protection system according to claim 7, characterized in that: Also includes: A winch is fixed in front of the wave-facing surface of the main body. The winch leads out a rope connected to the main body. The winch is used to tighten the rope to enhance the impact resistance of the main body.

10. The coastal protection system according to claim 7, characterized in that: Also includes: The limit device comprises a limit pin and a second driving mechanism, wherein the second driving mechanism drives the limit pin to be lifted up or lowered, and the limit pin is located at a position directly opposite to the gear shaft; when the limit pin is lifted up, the limit pin is inserted into a pin insertion hole provided on the gear shaft to limit the gear shaft from continuing to move.

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