Combined protection device and method for offshore wind power foundation pile

Abstract

The invention belongs to the technical field of offshore wind power foundation piles, and provides an offshore wind power foundation pile combined protection device and method.The protection mechanism comprises a first protection plate arranged on a first connecting mechanism, a second protection plate connected with the first protection plate and a plurality of wave dissipation holes formed in the second protection plate; the first protection plates are obliquely arranged in the axial direction of the wind power foundation pile, the second protection plates are obliquely arranged in the radial direction of the wind power foundation pile, and gaps between the adjacent protection mechanisms are gradually reduced from bottom to top in the axial direction of the wind power foundation pile, so that water flows on the surfaces of the first protection plates and the second protection plates in the process of flowing to the wind power foundation pile. The scouring capacity of gaps between the adjacent protection mechanisms is gradually reduced, and meanwhile, the protection mechanisms and the wind power foundation piles are protected; and meanwhile, viscous minerals injected into the soil layer in advance are diffused through the electroosmosis well and form a consolidation body with the soil, and rapid and targeted consolidation protection on the soil layer around the offshore wind power foundation pile under the condition of rapid scouring is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore wind power pile foundations, and in particular relates to an offshore wind power pile foundation combined protection device and method. Background Art

[0002] Offshore wind turbine foundation piles are an important part of offshore wind power generation equipment. Since the bottom of the foundation piles is mostly loose sandy soil and silt layers, the seabed near the foundation piles is affected by hydrodynamic forces such as tides and waves, which causes scouring and formation of scouring pits, weakening the supporting capacity of the foundation piles, thereby affecting the operation of wind power equipment and shortening the life of the equipment. In addition, when the ocean current passes through the foundation piles, eddy shedding will form in the backflow area of ​​the foundation piles. This periodic eddy movement will intensify the erosion of sediments around the foundation piles, forming larger scouring pits, and in severe cases even causing the foundation piles to tilt, causing property losses and threatening life safety.

[0003] Traditional protection methods mainly include stone dumping, cushions and slope protection, diversion structures, soil reinforcement and ecological protection. However, stones are easily washed away and it is difficult to play a long-term protective effect; cushions and slope protection may also be eroded under strong water flow conditions, resulting in material loss; under extreme weather or wave conditions, diversion structures are easily damaged and require frequent maintenance; biological construction cycles are long, and the initial effect is not obvious. Specifically, the current joint protection method for offshore wind turbine piles is characterized by the inability to protect wind turbine piles and diversion structures at the same time, and the inability to quickly and specifically protect the soil layer around offshore wind turbine piles under severe scouring conditions, resulting in irreversible scouring damage to the soil layer around the wind turbine piles. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a combined protection device and method for offshore wind turbine piles, including multiple wave-breaking holes on the second protection plate; the first protection plate is tilted along the axial direction of the wind turbine pile, and the second protection plate is tilted along the radial direction of the wind turbine pile, and the gap between adjacent protection mechanisms is gradually reduced from bottom to top along the axial direction of the wind turbine pile; the tilted setting and the gradually reduced gap setting make the scouring capacity on the surfaces of the first protection plate and the second protection plate, and the gap between adjacent protection mechanisms gradually reduce during the process of water flowing to the wind turbine pile, while protecting the protection mechanism and the wind turbine pile, and under the action of the wave-breaking holes, the scouring capacity of the water flow is further reduced; at the same time, the sticky minerals pre-injected into the soil layer are diffused through the electro-osmosis well and form a consolidated body with the soil, so as to realize rapid and targeted consolidation protection of the soil layer around the offshore wind turbine pile under rapid scouring conditions, and avoid the irreversible scouring damage to the soil layer around the wind turbine pile.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, the present invention provides an offshore wind power pile joint protection device, which adopts the following technical scheme:

[0006] An offshore wind power pile joint protection device comprises a plurality of protection mechanisms arranged around the wind power pile through a first connection mechanism, and a plurality of electro-osmosis wells arranged at one end of the protection mechanism away from the first connection mechanism;

[0007] The protection mechanism comprises a first protection plate arranged on the first connection mechanism, a second protection plate connected to the first protection plate, and a plurality of wave-breaking holes provided on the second protection plate; the first protection plate is arranged obliquely along the axial direction of the wind turbine pile, and the second protection plate is arranged obliquely along the radial direction of the wind turbine pile; the gap between adjacent protection mechanisms is gradually reduced from bottom to top along the axial direction of the wind turbine pile;

[0008] When the scouring degree reaches a preset critical value, the electro-osmosis well will diffuse the viscous minerals pre-injected into the soil layer and form a consolidated body with the soil.

[0009] Furthermore, the first connecting mechanism includes a plurality of arc guide rails, an adjustment block adjustable by bolts on the arc guide rails, a flexible connecting member arranged on the adjustment block, and a fixing member arranged on the flexible connecting member; the first protective plate is arranged on the fixing member.

[0010] Furthermore, the fixing member and the arc-shaped guide rail are connected via two flexible connectors and two adjustment blocks; the two flexible connectors are distributed at both ends of the fixing member.

[0011] Furthermore, one end of the first protective plate close to the bottom of the wind turbine foundation pile is inclined away from the wind turbine foundation pile; and one end of the second protective plate close to the wind turbine foundation pile is inclined upward.

[0012] Furthermore, the first protective plate and the second protective plate are both curved fan-shaped structures.

[0013] Furthermore, the electro-osmosis well is located in the gap between two adjacent protective mechanisms.

[0014] Furthermore, a grouting hole is arranged on the first protective plate, and a first grouting hole is opened on the side of the first protective plate; a plurality of flow guiding mechanisms are arranged circumferentially at the bottom end of the wind turbine pile through a second connecting mechanism, and the second connecting mechanism is structurally the same as the first connecting mechanism.

[0015] Furthermore, the flow guiding mechanism is located at a gap between two adjacent protective mechanisms; and the flow guiding mechanism is a flexible mechanism.

[0016] Furthermore, the guide mechanism includes a guide groove and a plurality of second slurry outlet holes opened on two sides of the guide groove.

[0017] In order to achieve the above-mentioned purpose, in a second aspect, the present invention also provides a combined protection method for offshore wind power piles, which adopts the following technical scheme:

[0018] A combined protection method for offshore wind turbine piles uses the combined protection device for offshore wind turbine piles as described in the first aspect, including: during the process of water flowing toward the wind turbine piles, the scouring capacity on the surfaces of the first protective plate and the second protective plate, and in the gaps between adjacent protective mechanisms is gradually reduced, thereby reducing the scouring of the protective mechanisms and the wind turbine piles; when the scouring degree reaches a preset critical value, the viscous minerals pre-injected into the soil layer are diffused through the electro-osmosis well and form a consolidated body with the soil, thereby avoiding scouring damage to the soil layer around the wind turbine piles.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, a plurality of protective mechanisms are arranged on the circumference of the wind turbine pile through a first connecting mechanism, and the protective mechanisms include a first protective plate arranged on the first connecting mechanism, a second protective plate connected to the first protective plate, and a plurality of wave-breaking holes opened on the second protective plate; the first protective plate is arranged obliquely along the axial direction of the wind turbine pile, and the second protective plate is arranged obliquely along the radial direction of the wind turbine pile, and the gap between adjacent protective mechanisms gradually decreases from bottom to top along the axial direction of the wind turbine pile; the inclined arrangement and the gradually decreasing gap arrangement make the scouring capacity on the surface of the first protective plate and the second protective plate, and the gap between adjacent protective mechanisms gradually decrease during the process of water flowing to the wind turbine pile, while protecting the protective mechanism and the wind turbine pile, and under the action of the wave-breaking holes, the scouring capacity of the water flow is further reduced; when the scouring degree reaches a preset critical value, the viscous minerals pre-injected into the soil layer are diffused through the electro-osmosis well and form a consolidated body with the soil, so as to realize rapid and targeted consolidation protection of the soil layer around the offshore wind turbine pile under the condition of rapid scouring, and avoid the scouring damage of the soil layer around the wind turbine pile that is difficult to recover.

[0021] 2. The first connecting mechanism in the present invention includes a plurality of arc guide rails, an adjusting block adjustable by bolts on the arc guide rails, a flexible connecting member arranged on the adjusting block, and a fixing member arranged on the flexible connecting member, and the first protective plate is arranged on the fixing member; the protective mechanism can be adjusted by the position of the adjusting block on the arc guide rail according to the degree of water scouring, and the gap between adjacent protective mechanisms can be adjusted, so that more protective mechanisms are arranged on the side with a greater degree of water scouring to improve the protection capability, and fewer protective mechanisms are arranged on other sides without increasing the overall cost.

[0022] 3. In the present invention, the fixing member and the arc-shaped guide rail are connected by two flexible connectors and two adjustment blocks. When the protective structure is eroded and twisted, the opposite forces of the two flexible connectors can be used to quickly restore the protective mechanism, thereby improving stability.

[0023] 4. In the present invention, grouting holes are arranged on the first protective plate, and a first slurry outlet hole is opened on the side of the first protective plate; at the bottom end of the wind turbine pile, a plurality of guide mechanisms are arranged along the circumferential direction through the second connecting mechanism, and the guide mechanism includes a guide groove, and a plurality of second slurry outlet holes opened on two sides of the guide groove; after the slurry is injected into the interior of the protective mechanism through the grouting holes and the first slurry outlet holes on the side, it flows out from the first slurry outlet holes on the side and diffuses to the seabed area around the wind turbine pile, and the slurry is guided by the guide plate to diffuse around the protective mechanism to form a stable solidified layer, which effectively prevents scouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0025] Figure 1 This is a schematic diagram of the structure of the device according to Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of a protection mechanism according to Embodiment 1 of the present invention;

[0027] Figure 3 This is a front view of the device of Example 1 of the present invention;

[0028] Figure 4 A top view of the device of embodiment 1 of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection mechanism of Example 1 of the present invention;

[0030] Figure 6 This is a front view of the connecting mechanism of Example 1 of the present invention;

[0031] Figure 7 It is a side view of the connection mechanism of Example 1 of the present invention;

[0032] Figure 8 A top view of the connecting mechanism of Example 1 of the present invention;

[0033] Fig. 9 This is a schematic diagram of grouting diffusion in Example 1 of the present invention;

[0034] Among them, 1. wind turbine foundation piles; 2. first connecting mechanism; 201. arc guide rail; 202. adjusting block; 203. bolt; 204. bolt head; 205. nut; 206. flexible connector; 207. fixing piece; 3. protection mechanism; 301. first protection plate; 3011. grouting hole; 3012. first slurry outlet hole; 302. second protection plate; 303. wave-breaking hole; 4. second connecting mechanism; 5. diversion mechanism; 501. diversion trough; 502. second slurry outlet hole; 6. electro-osmosis well; 7. soil layer. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0037] Embodiment 1:

[0038] Traditional protection methods mainly include rock dumping, cushions and slope protection, diversion structures, soil reinforcement and ecological protection. Rock dumping increases the stability of the seabed by placing stones around the foundation piles. Although the construction is simple, the long-term protection effect is unstable and may affect the surrounding ecology. Pads and slope protection reduce the direct impact of water flow by laying materials. Although they can provide additional support, the construction and maintenance costs are high. Diversion structures reduce scouring by changing the flow path, but they are easily damaged in extreme weather. Ecological protection uses natural materials to promote biodiversity, but the construction period is long and the initial effect is not obvious. These traditional methods have their own advantages and disadvantages and cannot fully meet the needs of modern marine engineering. Specifically, stones are easily washed away and it is difficult to have a long-term protection effect; cushions and slope protection may also be eroded under strong water flow conditions, resulting in material loss; diversion structures are easily damaged in extreme weather or wave conditions and require frequent maintenance; biological construction period is long and the initial effect is not obvious.

[0039] As described in the background technology, the current joint protection method for offshore wind turbine piles is characterized by the inability to protect the wind turbine piles and the diversion structure at the same time, and the inability to provide rapid and targeted protection for the soil layers around the offshore wind turbine piles in the event of severe scouring, resulting in irreparable scouring damage to the soil layers around the wind turbine piles.

[0040] In order to solve at least one of the above problems, Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a combined protection device for offshore wind turbine pile foundations, which integrates different protection methods to achieve a more efficient and stable protection effect. The device includes a first connecting mechanism 2, a protection mechanism 3, a second connecting mechanism 4, a diversion mechanism 5 and an electro-osmosis well 6, etc.

[0041] In this embodiment, a plurality of protection mechanisms 3 are arranged around the wind power pile 1 through the first connection mechanism 2, and a plurality of electro-osmosis wells 6 are arranged at one end of the protection mechanism 3 away from the first connection mechanism 2;

[0042] The protection mechanism 3 includes a first protection plate 301 arranged on the first connection mechanism 2, a second protection plate 302 connected to the first protection plate 301, and a plurality of wave elimination holes 303 opened on the second protection plate 302; the first protection plate 301 is arranged axially inclined along the wind power pile 1, and the second protection plate 302 is arranged radially inclined along the wind power pile 1; Figure 4 As shown, the gap between adjacent protection mechanisms 3 gradually decreases from bottom to top along the axial direction of the wind power pile 1;

[0043] When the scouring degree reaches a preset critical value, the electro-osmosis well 6 will diffuse the viscous minerals pre-injected into the soil layer and form a consolidated body with the soil.

[0044] Specifically, by means of the inclined setting and the gradually reduced gap setting, the scouring capacity on the surface of the first protective plate 301 and the second protective plate 302, and the gap between adjacent protective mechanisms 3 is gradually reduced during the process of water flowing toward the wind turbine pile 1, thereby protecting the protective mechanism 3 and the wind turbine pile 1, and further reducing the scouring capacity of the water flow under the action of the wave-breaking holes 303; at the same time, when the scouring degree reaches a preset critical value, the viscous minerals pre-injected into the soil layer are diffused through the electro-osmosis well 6 and form a consolidated body with the soil, thereby realizing rapid and targeted consolidation protection of the soil layer 7 around the offshore wind turbine pile 1 under rapid scouring conditions, thereby avoiding irreversible scouring damage to the soil layer 7 around the wind turbine pile 1.

[0045] The multiple wave-breaking holes 303 on the second protective plate 302 can achieve water exchange, enhance the friction between the second protective plate 302 and the seabed, and stabilize the position of the protective mechanism 3. The multiple wave-breaking holes 303 not only reduce the direct impact of the water flow, but also can effectively exchange water between the inside of the protective mechanism 3 and the external seawater and sediment, thereby reducing the impact on the ecological environment.

[0046] The first protective plate 301 and the second protective plate 302 can be made of high-strength, corrosion-resistant polymer composite materials that can resist long-term seawater erosion and physical impact. The design purpose is to slow down the scouring of the seabed around the wind turbine foundation pile 1 by the flow of seawater. The protective mechanism 3 adopts a segmented modular design to facilitate transportation and installation. Each module is tightly combined with the adjacent module through the first connecting mechanism 2 to form a complete protective structure; the first protective plate 301 and the second protective plate 302 are mainly curved structures that wrap around the foundation pile and are fixed to the bottom of the foundation pile through connectors.

[0047] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the first connecting mechanism 2 includes a plurality of arc guide rails 201, an adjusting block 202 adjustably arranged on the arc guide rails 201 through bolts 203, bolt heads 204 and nuts 205, a flexible connecting member 206 arranged on the adjusting block 202, and a fixing member 207 arranged on the flexible connecting member 206; the first protective plate 301 is arranged on the fixing member 207.

[0048] Specifically, the first connecting mechanism 2 includes a plurality of arc guide rails 201, an adjusting block 202 adjustably arranged on the arc guide rail 201, a flexible connecting member 206 arranged on the adjusting block 202, and a fixing member 207 arranged on the flexible connecting member 206; the protective mechanism 3 can be adjusted according to the degree of water scouring by adjusting the position of the adjusting block 202 on the arc guide rail 201, and the gap between adjacent protective mechanisms 3 can be adjusted, so that more protective mechanisms 3 are arranged on the side with a greater degree of water scouring to improve the protection capability, and fewer protective mechanisms 3 are arranged on other sides without increasing the overall cost.

[0049] The first connecting mechanism 2 adopts an embedded link. The embedded node connection is to fix and connect the protective mechanism 3 and the wind power pile 1 at the overlap by connecting parts such as steel plates and bolts 203. Hydraulic equipment is required to accurately position the protective mechanism 3 during installation. The hydraulic equipment mainly realizes automatic positioning, support and clamping of the workpiece through hydraulic control. After the protective mechanism 3 is positioned on the seabed, it can ensure that the workpiece is accurately positioned and firmly clamped at the specified position, so that the workpiece will not vibrate or deform during processing. And inject an appropriate amount of slurry for preliminary reinforcement to prevent the protective mechanism 3 from being washed away by the current. An anchoring device is added to the contact area between the bottom of the protective mechanism 3 and the seabed, and gravity and friction are used to jointly maintain the stability of the protective mechanism 3.

[0050] The fixing member 207 is connected to the arc-shaped guide rail 201 via two flexible connecting members 206 and two adjusting blocks 202 ; the two flexible connecting members 206 are distributed at both ends of the fixing member 207 .

[0051] Optionally, the first protective plate 301 is close to the bottom of the wind turbine pile 1 and is inclined away from the wind turbine pile 1; the second protective plate 302 is close to the end of the wind turbine pile 1 and is inclined upward. Both the first protective plate 301 and the second protective plate 302 are curved fan-shaped structures.

[0052] like Fig. 9 As shown, the first protective plate 301 is provided with a grouting hole 3011, and the side of the first protective plate 301 is provided with a first grouting hole 3012; the bottom end of the wind power pile 1 is provided with a plurality of guide mechanisms 5 along the circumferential direction through the second connecting mechanism 4, and the second connecting mechanism 4 is structurally the same as the first connecting mechanism 2. The guide mechanism 5 is located at the gap between two adjacent protective mechanisms 3; the guide mechanism 5 is a flexible mechanism.

[0053] The guide mechanism 5 includes a guide groove 501 and a plurality of second pulp outlet holes 502 opened on two sides of the guide groove 501 .

[0054] Specifically, the first grouting holes 3012 are honeycomb-shaped, which is conducive to the diffusion of the grouting solidification liquid and reduces the impact on the ecological environment; the slurry is injected through the grouting holes 3011 to fill the first protective plate 301 and the second protective plate 302, and penetrates into the surrounding and lower areas of the protective mechanism 3 through multiple first grouting holes 3012. The slurry spreads to a wider area through the guide groove 501, forming a comprehensive solidification system, further enhancing the stability around the wind power pile 1.

[0055] The first connecting mechanism 2 and the second connecting mechanism 4 are flexibly turned, and the first connecting mechanism 2 and the second connecting mechanism 4 are installed on the upper and lower sides of the wind power pile 1 by welding, so that the diversion angle can be adjusted according to the seabed topography to ensure the maximum curing effect. The material of the protective mechanism 3 is a composite material with a certain elasticity to prevent it from being damaged under strong currents. During grouting, a first slurry outlet hole 3012 is opened on the inner wall of the first protective plate 301 and the second protective plate 302. The first slurry outlet hole 3012 is placed on the side and below. The slurry is injected into the protective mechanism 3 through the grouting hole 3011. After the slurry fills the hole, it flows out from the first slurry outlet hole 3012 due to pressure and diffuses to the seabed area around the wind power pile 1. After the slurry fills the protective mechanism 3, the diversion mechanism 5 guides the slurry to diffuse around the protective mechanism 3 to form a stable solidification layer, which effectively prevents scouring.

[0056] Optionally, the grouting process is to connect the grouting pipe to the reserved grouting hole 3011. To ensure that the grouting pipe and the grouting hole 3011 are tightly connected, a rubber ring needs to be set at the connection. After the connection is completed and the air tightness is checked, grouting is performed in the grouting hole 3011 by a high-pressure pump, using cement-based slurry or silicate slurry, which has good fluidity and curing properties. The solidified slurry can form a dense consolidation body around the protective mechanism 3, thereby increasing the adhesion between the foundation pile and the seabed.

[0057] The guide mechanisms 5 are evenly distributed around the protection mechanism 3, and each group of guide mechanisms 5 is spaced at a certain distance. The main function of the guide mechanism 5 is to guide the slurry to a wider area, so that the slurry evenly covers the seabed surface and forms a large area of ​​solidified layer.

[0058] The electro-osmosis well 6 is located in the gap between two adjacent protective mechanisms 3. The electro-osmosis well 6 is arranged at the end of the second protective plate 302, and is used to start when the risk of scouring is detected. Through the pre-injected sticky minerals and the addition of calcium carbonate curing agent, the soil solidification is accelerated under the action of the electric field to form flocculants and improve the anti-scouring performance of the sludge; the sticky minerals can be bentonite and xanthan gum. A CPT (Cone Penetration Test) sensor is set to monitor the scouring of the sludge in real time. When it is detected that the scouring degree reaches a critical value, the sensor will send a signal to the preset controller to automatically start the electro-osmosis device in the electro-osmosis well 6. The electro-osmosis well 6 can be started and paused multiple times when the circulating water flow is enhanced to ensure the long-term effectiveness of the protective device.

[0059] The working principle and implementation of the electro-osmosis well 6 are as follows: the electro-osmosis well 6 uses electro-osmosis to solidify the seabed soil layer by pre-injecting sticky minerals into the soil layer and then promoting mineral cementation through an electric field to form erosion-resistant flocculants, thereby further enhancing the stability of the strata around the foundation piles.

[0060] Optionally, when the CPT sensor detects that the scouring degree reaches or approaches a critical value, the electroosmosis device in the electroosmosis well 6 automatically starts to generate an electric field. When the sticky mineral particles are in the electric field, the charges in the double electric layer structure on their surface will be affected by the electric field force, resulting in charge redistribution and ion migration. Under the action of the electric field, the negative charge on the surface of the sticky mineral particles will attract the cations in the solution to form a tightly adsorbed cation layer. At the same time, due to the polarity of water molecules, they will also be adsorbed around the cation layer to form a layer of water molecules. These two layers together constitute the double electric layer. When the direction of the electric field changes, the cations and water molecules in the double electric layer will be affected by the electric field force and move in a directional manner. Since the negative charges on the surface of the sticky mineral particles are fixed, they will move with the adsorbed cations and water molecules to form an electroosmotic flow. The electroosmosis well 6 injects sticky minerals such as bentonite and xanthan gum into the seabed soil layer through a plurality of wellbores arranged at the end of the baffle. After power is applied, the electric field promotes the diffusion of colloidal minerals and forms a stable consolidated body with the soil, thereby improving the bearing capacity of the foundation.

[0061] Specifically, four cylindrical electro-osmosis wells 6 of a certain depth are evenly excavated around the protective mechanism 3, and the surrounding soil is anchored; the main structure of the electro-osmosis well 6 is reinforced with a special anti-corrosion alloy, and viscous minerals are injected into it after the reinforcement is completed; the electro-osmosis well 6 is equipped with a CPT sensor, and the probe module is buried in the seabed stratum according to the depth level, and the stability of the foundation is monitored in real time by monitoring the permeability and shear strength of the silt; when signs of scouring are detected, the electro-osmosis well 6 is automatically started, and the electric field promotes the diffusion of colloidal minerals and forms a stable consolidated body with the soil, thereby improving the bearing capacity of the foundation; after a period of time, the consolidation effect weakens, and when signs of scouring are detected again, the electro-osmosis well 6 is started again for periodic protection to ensure long-term use in the marine environment.

[0062] The electro-osmosis well 6 is integrated with a CPT sensor for real-time monitoring of silt scouring and soil layer changes, and automatically starts or pauses the electro-osmosis well 6 through an intelligent control system to ensure that the system is always in the best protection state when the water flow changes. The CPT sensor is connected to the control center through wireless transmission technology to transmit data in real time, and the operator can remotely monitor and adjust the system working status. The control system of the control center can be set to regular inspection or continuous monitoring mode, and actively adjust the protection strategy based on historical data and model predictions to ensure the long-term stability of the foundation pile under different hydrodynamic conditions.

[0063] The working process or principle of this embodiment is:

[0064] S1. Conduct seabed survey around wind turbine foundation pile 1 to determine soil structure and construction area.

[0065] S2, installing the protection mechanism 3, using hydraulic equipment to position and fix. After installation, injecting initial reinforcement material through the grouting hole 3011.

[0066] S3, start the grouting system, inject slurry through the grouting holes 3011, and guide the slurry to spread to the seabed around the wind turbine piles 1 to solidify the foundation.

[0067] S4, install the electroosmosis well 6, and use the CPT sensor to perform initial monitoring. Adjust the working parameters of the grouting or electroosmosis equipment according to the monitoring results.

[0068] S5, the system enters the long-term monitoring and automatic control stage. The CPT sensor continuously monitors the sludge flushing situation. Once the alarm threshold is triggered, the system automatically starts the electro-osmosis well 6 to perform the solidification operation.

[0069] This embodiment integrates multiple technologies to form a comprehensive integrated protection system, which effectively improves the anti-scouring ability and long-term use stability.

[0070] The protective mechanism 3 adopts a segmented modular design, which is convenient for transportation and installation and improves construction efficiency. The honeycomb wave-breaking holes 303 are arranged on the protective mechanism 3, which not only enhances the diffusion effect of the slurry, but also realizes water exchange and reduces the impact on the ecological environment. The modular design of the protective mechanism 3 makes the transportation and installation process more efficient and convenient for application in different construction environments; at the same time, the use of hydraulic equipment for precise positioning improves the accuracy and safety of the installation and reduces the construction time and cost; the wave-breaking holes 303 realize water exchange while avoiding direct impact of water flow on the foundation piles. The material of the protective mechanism 3 is a high-strength, corrosion-resistant polymer composite material that can resist seawater erosion and physical impact.

[0071] The diversion mechanism 5 and the protection mechanism 3 respectively adopt an adjustable first connection mechanism 2 and a second connection mechanism 4, which can adjust the angle according to the change of the seabed topography to optimize the coverage of the slurry. The diversion mechanism 5 guides the slurry to spread evenly, ensuring that the slurry can cover a wider area and form a stable solidified layer.

[0072] The CPT sensor monitors the scouring of silt and changes in soil layers in real time. The system can automatically adjust protective measures based on monitoring data to ensure long-term effectiveness. Electro-osmosis well 6 injects viscous minerals and uses electric fields to promote soil solidification, forming anti-scouring flocculants and improving the stability of the strata around the foundation piles. The flocculants formed by electro-osmosis can effectively improve the stability of anti-scouring and further cope with the negative effects of water flow changes; the integrated CPT sensor can monitor the scouring of silt in real time and control the start-up of the device, reducing the need for manual inspections and improving the response speed and stability of the system; it allows multiple starts and pauses when the circulating water flow is enhanced, effectively coping with different hydrodynamic conditions.

[0073] Embodiment 2:

[0074] The present embodiment provides a combined protection method for offshore wind turbine piles, using the combined protection device for offshore wind turbine piles as described in Example 1, including: during the process of water flowing toward the wind turbine pile 1, the scouring capacity on the surface of the first protective plate 301 and the second protective plate 302, and the gap between adjacent protective mechanisms 3 is gradually reduced, thereby reducing the scouring of the protective mechanism 3 and the wind turbine pile 1; when the scouring degree reaches a preset critical value, the viscous minerals pre-injected into the soil layer are diffused through the electro-osmosis well 6 and form a consolidated body with the soil, thereby avoiding scouring damage to the soil layer around the wind turbine pile 1.

[0075] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A combined protection device for offshore wind power pile foundation, characterized in that: It comprises a plurality of protection mechanisms (3) arranged in the circumferential direction of a wind power foundation pile (1) via a first connection mechanism (2), and a plurality of electro-osmosis wells (6) arranged at one end of the protection mechanism (3) away from the first connection mechanism (2); The protection mechanism (3) comprises a first protection plate (301) arranged on the first connection mechanism (2), a second protection plate (302) connected to the first protection plate (301), and a plurality of wave-breaking holes (303) provided on the second protection plate (302); the first protection plate (301) is arranged axially and tilted along the wind turbine pile (1), and the second protection plate (302) is arranged radially and tilted along the wind turbine pile (1); the gap between adjacent protection mechanisms (3) gradually decreases from bottom to top along the axial direction of the wind turbine pile (1); When the scouring degree reaches a preset critical value, the electro-osmosis well (6) diffuses the viscous minerals pre-injected into the soil layer and forms a consolidated body with the soil.

2. The offshore wind power pile joint protection device according to claim 1, characterized in that: The first connecting mechanism (2) comprises a plurality of arc-shaped guide rails (201), an adjusting block (202) adjustable by bolts (203) on the arc-shaped guide rails (201), a flexible connecting member (206) arranged on the adjusting block (202), and a fixing member (207) arranged on the flexible connecting member (206); the first protective plate (301) is arranged on the fixing member (207).

3. The offshore wind power pile joint protection device according to claim 2, characterized in that: The fixing member (207) and the arc-shaped guide rail (201) are connected via two flexible connecting members (206) and two adjusting blocks (202); the two flexible connecting members (206) are distributed at both ends of the fixing member (207).

4. The offshore wind power pile joint protection device according to claim 1, characterized in that: One end of the first protective plate (301) is close to the bottom of the wind turbine pile (1) and is inclined in a direction away from the wind turbine pile (1); and one end of the second protective plate (302) is close to the wind turbine pile (1) and is inclined upward.

5. The offshore wind power pile joint protection device according to claim 1, characterized in that: The first protection plate (301) and the second protection plate (302) are both curved fan-shaped structures.

6. The offshore wind power pile joint protection device according to claim 1, characterized in that: The electroosmosis well (6) is located in the gap between two adjacent protection mechanisms (3).

7. The offshore wind power pile joint protection device according to claim 1, characterized in that: The first protective plate (301) is provided with a grouting hole (3011), and the side surface of the first protective plate (301) is provided with a first grouting hole (3012); the bottom end of the wind power pile (1) is provided with a plurality of guide mechanisms (5) along the circumferential direction through a second connecting mechanism (4), and the second connecting mechanism (4) is structurally identical to the first connecting mechanism (2).

8. The offshore wind power pile joint protection device according to claim 7, characterized in that: The flow guiding mechanism (5) is located at the gap between two adjacent protection mechanisms (3); the flow guiding mechanism (5) is a flexible mechanism.

9. The offshore wind power pile joint protection device according to claim 7, characterized in that: The flow guiding mechanism (5) comprises a flow guiding groove (501) and a plurality of second pulp outlet holes (502) arranged on two side surfaces of the flow guiding groove (501).

10. A combined protection method for offshore wind power piles, characterized in that: The combined offshore wind turbine pile protection device as claimed in any one of claims 1 to 9 comprises: when water flows toward the wind turbine pile (1), the scouring capacity on the surface of the first protective plate (301) and the second protective plate (302), and the gap between adjacent protective mechanisms (3) is gradually reduced, thereby reducing the scouring of the protective mechanism (3) and the wind turbine pile (1); when the scouring degree reaches a preset critical value, the viscous minerals pre-injected into the soil layer are diffused through the electro-osmosis well (6) and form a consolidated body with the soil, thereby avoiding scouring damage to the soil layer around the wind turbine pile (1).

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