An ocean current retaining wall and its construction method

Abstract

The present invention discloses an ocean current retaining wall and its construction method. The ocean current retaining wall is arranged in front of the scouring improvement area, and includes a left retaining wall and a right retaining wall. The left retaining wall and the right retaining wall are symmetrical about the center line of the scouring improvement area. The first end of the left retaining wall and the first end of the right retaining wall are located on the center line and form a common end. The second end of the left retaining wall extends from the common end to the vicinity of the left boundary of the scouring improvement area in the lower left direction, and the second end of the right retaining wall extends from the common end to the vicinity of the right boundary of the scouring improvement area in the lower right direction. A central floating body platform is arranged on the common end. The left retaining wall includes a first wake floating body platform, a first diversion floating body platform, a first diversion wall, and a first drainage wall. The right retaining wall includes a second wake floating body platform, a second diversion floating body platform, a second diversion wall, and a second drainage wall. The present invention not only diverts the flow reasonably and limits the speed to fix the soil, guides the ocean current to deviate from the wind power foundation, effectively reduces the flow velocity in the wind power generation foundation area, strengthens the retention of the foundation soil, and further reduces the scouring of the foundation.

Description

Technical Field

[0001] The present invention relates to the technology for preventing scour of offshore wind power foundations, and particularly to a sea current retaining wall and its construction method. Background Art

[0002] During the operation of wind power foundations, they are vulnerable to scour by sea currents, which carry away the sediment around the foundations, resulting in a decrease in the bearing capacity of the foundations and the loss of stability of the foundation inclination structure. Therefore, it is necessary to protect the foundations to reduce the scour of tidal currents on the foundations. Patent 201810328155.6 introduces an anti-scour structure for offshore wind power foundations. Laying sand and gravel within a certain range around the pile foundation to form a sand-washing surface has a good anti-scour effect in a short time. However, there are inevitably gaps between the sand and gravel, and the effect is not good under the long-term action of ocean currents and tides, and the maintenance cost for maintaining the anti-scour effect is relatively high. Patent 201910795899.3 introduces an anti-scour structure and construction method for steel pipe pile foundations. Strengthening the steel pipe piles can effectively improve the anti-scour ability of the steel pipe piles, but it is necessary to strengthen all the foundations, which involves a large amount of work and high costs. In the situation where the phenomenon of structural instability caused by foundation scour occurs frequently, taking effective measures to actively divert the sea current and limit the flow velocity in the area is a new way out. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a sea current retaining wall and its construction method, which can not only reasonably divert the current but also limit the speed and solidify the soil, guide the sea current to deviate from the wind power foundation, effectively reduce the flow velocity in the wind power generation foundation area, strengthen the retention of foundation soil, and thus reduce the scour of the foundation.

[0004] The technical solution adopted by the present invention is as follows: A sea current retaining wall is arranged in front of the scour improvement area. The sea current retaining wall includes a left retaining wall and a right retaining wall. The left retaining wall and the right retaining wall are symmetric about the center line of the scour improvement area. The first end of the left retaining wall and the first end of the right retaining wall are located on the center line and form a common end. The second end of the left retaining wall extends from the common end to the left lower part near the left boundary of the scour improvement area, and the second end of the right retaining wall extends from the common end to the right lower part near the right boundary of the scour improvement area;

[0005] Wherein, a central floating body platform is arranged on the common end;

[0006] The left retaining wall includes a first wake floating body platform at the second end and a first diversion floating body platform between the central floating body platform and the first wake floating body platform; a first diversion wall is arranged between the central floating body platform and the first diversion floating body platform, and a first diversion wall is arranged between the first diversion floating body platform and the first wake floating body platform;

[0007] The right retaining wall includes a second wake floating body platform located at the second end and a second drainage floating body platform located between the central floating body platform and the second wake floating body platform; a second diversion wall is provided between the central floating body platform and the second drainage floating body platform, and a second drainage wall is provided between the second drainage floating body platform and the second wake floating body platform.

[0008] Further, the central floating body platform, the first drainage floating body platform, the first wake floating body platform, the second drainage floating body platform, and the second wake floating body platform all include floating boxes and anchoring systems;

[0009] Wherein, the anchoring system includes a mooring cable, a platform longitudinal sling, and a platform suction bucket; the first end of the mooring cable is fixedly connected to the floating box, and the second end is anchored in the seabed surface; the platform suction bucket is fixed in the seabed surface below the floating box, and the first end of the platform longitudinal sling is fixedly connected to the floating box, and the second end is anchored on the platform suction bucket.

[0010] Further, the floating boxes of the central floating body platform and the first drainage floating body platform, the floating boxes of the first drainage floating body platform and the first wake floating body platform, the floating boxes of the central floating body platform and the second drainage floating body platform, and the floating boxes of the second drainage floating body platform and the second wake floating body platform are all connected by transverse slings.

[0011] Further, the first diversion wall, the first drainage wall, the second diversion wall, and the second drainage wall all include a top crossbar, a bottom crossbar, and a retaining wall body provided between the top crossbar and the bottom crossbar. The upper and lower ends of the retaining wall body are respectively fixedly connected to the top crossbar and the bottom crossbar, and flow-through holes are provided on the retaining wall body.

[0012] Further, the first diversion wall, the first drainage wall, the second diversion wall, and the second drainage wall can move up and down simultaneously under the action of a lifting system;

[0013] Wherein, the lifting system includes a first lifting device provided at the central floating body platform, a second lifting device provided at the first drainage floating body platform, a third lifting device provided at the first wake floating body platform, a fourth lifting device provided at the second drainage floating body platform, and a fifth lifting device provided at the second wake floating body platform.

[0014] Furthermore, a first retaining wall longitudinal sling is provided between the platform longitudinal sling of the central floating body platform and the platform longitudinal sling of the first diversion floating body platform, such that the first diversion wall is divided into a first diversion wall monomer and a second diversion wall monomer; a second retaining wall longitudinal sling is provided between the platform longitudinal sling of the first diversion floating body platform and the platform longitudinal sling of the first wake floating body platform, such that the first diversion wall is divided into a first diversion wall monomer and a second diversion wall monomer; a third retaining wall longitudinal sling is provided between the platform longitudinal sling of the central floating body platform and the platform longitudinal sling of the second diversion floating body platform, such that the second diversion wall is divided into a third diversion wall monomer and a fourth diversion wall monomer; a fourth retaining wall longitudinal sling is provided between the platform longitudinal sling of the second diversion floating body platform and the platform longitudinal sling of the second wake floating body platform, such that the second diversion wall is divided into a third diversion wall monomer and a fourth diversion wall monomer; the first lifting device simultaneously controls the first diversion wall monomer and the third diversion wall monomer; the second lifting device simultaneously controls the second diversion wall monomer and the first diversion wall monomer; the third lifting device controls the second diversion wall monomer; the fourth lifting device simultaneously controls the fourth diversion wall monomer and the third diversion wall monomer; the fifth lifting device controls the fourth diversion wall monomer.

[0015] Furthermore, first lifting rings are respectively provided at the middle positions of the top crossbar and the bottom crossbar of the first diversion wall, and both of the two first lifting rings are sleeved on the first retaining wall longitudinal sling; second lifting rings are respectively provided at the middle positions of the top crossbar and the bottom crossbar of the first diversion wall, and both of the two second lifting rings are sleeved on the second retaining wall longitudinal sling; third lifting rings are respectively provided at the middle positions of the top crossbar and the bottom crossbar of the second diversion wall, and both of the two third lifting rings are sleeved on the third retaining wall longitudinal sling; fourth lifting rings are respectively provided at the middle positions of the top crossbar and the bottom crossbar of the second diversion wall, and both of the two fourth lifting rings are sleeved on the fourth retaining wall longitudinal sling;

[0016] Moreover, the first end of the top crossbar of the first diversion wall is interconnected with the first end of the top crossbar of the first drainage wall, and the first end of the bottom crossbar of the first diversion wall is interconnected with the first end of the bottom crossbar of the first drainage wall respectively through the fifth lifting rings, and both of the two fifth lifting rings are sleeved on the platform longitudinal sling of the first drainage floating body platform; the first end of the top crossbar of the second diversion wall is interconnected with the first end of the top crossbar of the second drainage wall, and the first end of the bottom crossbar of the second diversion wall is interconnected with the first end of the bottom crossbar of the second drainage wall respectively through the sixth lifting rings, and both of the two sixth lifting rings are sleeved on the platform longitudinal sling of the second drainage floating body platform; the second end of the top crossbar of the first diversion wall is interconnected with the second end of the top crossbar of the second diversion wall, and the second end of the bottom crossbar of the first diversion wall is interconnected with the second end of the bottom crossbar of the second diversion wall respectively through the seventh lifting rings, and both of the two seventh lifting rings are sleeved on the platform longitudinal sling of the central floating body platform; the second end of the top crossbar and the second end of the bottom crossbar of the first drainage wall are respectively provided with the eighth lifting rings, and both of the two eighth lifting rings are sleeved on the platform longitudinal sling of the first wake floating body platform; the second end of the top crossbar and the second end of the bottom crossbar of the second drainage wall are respectively provided with the ninth lifting rings, and both of the two ninth lifting rings are sleeved on the platform longitudinal sling of the second wake floating body platform.

[0017] Furthermore, the first lifting device, the second lifting device, the third lifting device, the fourth lifting device and the fifth lifting device all include an adjusting sling and an electric winch;

[0018] The first end of the adjusting sling of the first lifting device is fixedly connected with the top crossbar of the first diversion wall unit and the top crossbar of the third diversion wall unit, the second end of the adjusting sling of the first lifting device is fixedly connected with the bottom crossbar of the first diversion wall unit and the bottom crossbar of the third diversion wall unit, the middle part of the adjusting sling of the first lifting device is tied and connected with the electric winch of the first lifting device, and the electric winch of the first lifting device is arranged on the floating box of the central floating body platform;

[0019] The first end of the adjusting sling of the second lifting device is fixedly connected with the top crossbar of the second diversion wall unit and the top crossbar of the first drainage wall unit, the second end of the adjusting sling of the second lifting device is fixedly connected with the bottom crossbar of the second diversion wall unit and the bottom crossbar of the first drainage wall unit, the middle part of the adjusting sling of the second lifting device is tied and connected with the electric winch of the second lifting device, and the electric winch of the second lifting device is arranged on the floating box of the first drainage floating body platform;

[0020] The first end of the adjusting sling of the third lifting device is fixedly connected to the top crossbar of the second drainage wall unit, the second end of the adjusting sling of the third lifting device is fixedly connected to the bottom crossbar of the second drainage wall unit, and the middle part of the adjusting sling of the third lifting device is tied and connected to the electric winch of the third lifting device. The electric winch of the third lifting device is arranged on the floating box of the first wake floating body platform;

[0021] The first end of the adjusting sling of the fourth lifting device is fixedly connected to the top crossbar of the fourth diversion wall unit and the top crossbar of the third drainage wall unit, the second end of the adjusting sling of the fourth lifting device is fixedly connected to the bottom crossbar of the fourth diversion wall unit and the bottom crossbar of the third drainage wall unit, and the middle part of the adjusting sling of the fourth lifting device is tied and connected to the electric winch of the fourth lifting device. The electric winch of the fourth lifting device is arranged on the floating box of the second drainage floating body platform;

[0022] The first end of the adjusting sling of the fifth lifting device is fixedly connected to the top crossbar of the fourth drainage wall unit, the second end of the adjusting sling of the fifth lifting device is fixedly connected to the bottom crossbar of the fourth drainage wall unit, and the middle part of the adjusting sling of the fifth lifting device is tied and connected to the electric winch of the fifth lifting device. The electric winch of the fifth lifting device is arranged on the floating box of the second wake floating body platform.

[0023] Further, the first end of the first retaining wall longitudinal sling is fixedly connected to the transverse sling between the central floating body platform and the first drainage floating body platform, the second end of the first retaining wall longitudinal sling is anchored to the first retaining wall suction bucket, and the first retaining wall suction bucket is fixed in the seabed surface;

[0024] The first end of the second retaining wall longitudinal sling is fixedly connected to the transverse sling between the first drainage floating body platform and the first wake floating body platform, the second end of the second retaining wall longitudinal sling is anchored to the second retaining wall suction bucket, and the second retaining wall suction bucket is fixed in the seabed surface;

[0025] The first end of the third retaining wall longitudinal sling is fixedly connected to the transverse sling between the central floating body platform and the second drainage floating body platform, the second end of the third retaining wall longitudinal sling is anchored to the third retaining wall suction bucket, and the third retaining wall suction bucket is fixed in the seabed surface;

[0026] The first end of the fourth retaining wall longitudinal sling is fixedly connected to the transverse sling between the second drainage floating body platform and the second wake floating body platform, the second end of the fourth retaining wall longitudinal sling is anchored to the fourth retaining wall suction bucket, and the fourth retaining wall suction bucket is fixed in the seabed surface.

[0027] The technical solution adopted by the present invention is as follows: The construction method of the above-mentioned current retaining wall includes the following steps:

[0028] Step 1: Sink the platform suction bucket below the seabed surface at the designated position. After the prefabricated floating box is integrally floated to the designated position, connect the first end of the platform longitudinal sling to the bottom surface of the floating box and anchor the second end on the platform suction bucket to complete the position fixation of the central floating body platform, the first diversion floating body platform, and the second diversion floating body platform;

[0029] Step 2: Connect the first diversion floating body platform, the central floating body platform, and the second diversion floating body platform into a whole through the transverse sling;

[0030] Step 3: Arrange the first retaining wall longitudinal sling: Bind and fix the first end of the first retaining wall longitudinal sling to the transverse sling between the central floating body platform and the first diversion floating body platform, and anchor the second end on the first retaining wall suction bucket. Sink the first retaining wall suction bucket below the seabed surface;

[0031] Step 4: Arrange the third retaining wall longitudinal sling according to the method shown in Step 3;

[0032] Step 5: Arrange the first diversion wall monomer and the second diversion wall monomer: Arrange the top crossbar, bottom crossbar, and retaining wall body of the first diversion wall monomer between the platform longitudinal sling of the central floating body platform and the first retaining wall longitudinal sling. Bind the top crossbar, bottom crossbar, and retaining wall body of the first diversion wall monomer into a whole; Arrange the top crossbar, bottom crossbar, and retaining wall body of the second diversion wall monomer between the first retaining wall longitudinal sling and the platform longitudinal sling of the first diversion floating body platform. Bind the top crossbar, bottom crossbar, and retaining wall body of the second diversion wall monomer into a whole; Connect the top crossbar between the first diversion wall monomer and the second diversion wall monomer and between the bottom crossbars of the first diversion wall monomer and the second diversion wall monomer into a whole through the first sling rings respectively, and put the two first sling rings on the first retaining wall longitudinal sling;

[0033] Step 6: Arrange the third diversion wall monomer and the fourth diversion wall monomer according to the method shown in Step 5;

[0034] Step 7: Connect the top crossbar between the first diversion wall monomer and the third diversion wall monomer and between the bottom crossbars of the first diversion wall monomer and the third diversion wall monomer into a whole through the seventh sling rings respectively, and put the two seventh sling rings on the platform longitudinal sling of the central floating body platform;

[0035] Step 8: Install the first lifting device, the second lifting device and the fourth lifting device. The adjusting sling of the lifting device is fixedly connected to the corresponding crossbeam. When disassembly, replacement or repair is required, the adjusting sling is retracted by the electric winch of the lifting device to lift the retaining wall body out of the water surface;

[0036] Step 9: Determine the positions of the first wake floating body platform and the second wake floating body platform. Install the first wake floating body platform, the second wake floating body platform, the second longitudinal retaining wall sling, the fourth longitudinal retaining wall sling, the first drainage wall monomer, the second drainage wall monomer, the third drainage wall monomer, the fourth drainage wall monomer, the third lifting device and the fifth lifting device according to the methods shown in Steps 1 to 8 to complete the construction of the ocean current retaining wall.

[0037] The beneficial effects of the present invention are as follows: The ocean current retaining wall of the present invention has a simple structure, low material cost and is extremely easy to obtain. It can be prefabricated and directly installed on site and is easy to construct. Disassembly, replacement and repair are convenient. When the ocean current comes, it can effectively reduce the flow velocity in the target area, strengthen the retention of the foundation soil, solve the problem of foundation soil movement caused by the ocean current, both reasonably divert the flow and limit the speed to fix the soil, thereby reducing the scour of the foundation. Description of the Drawings

[0038] Figure 1 : Top view structural schematic diagram of the ocean current retaining wall of the present invention;

[0039] Figure 2 : Left retaining wall plane structural schematic diagram of the ocean current retaining wall of the present invention;

[0040] Figure 3 : Right retaining wall plane structural schematic diagram of the ocean current retaining wall of the present invention;

[0041] Figure 4 : Three-dimensional structural schematic diagram of the ocean current retaining wall of the present invention.

[0042] Reference Signs in the Drawings:

[0043] 1 - Left retaining wall; 2 - Right retaining wall;

[0044] 3 - Central floating body platform; 4 - First wake floating body platform;

[0045] 5 - First drainage floating body platform; 6 - First diversion wall;

[0046] 7 - First drainage wall; 8 - Second wake floating body platform;

[0047] 9 - Second drainage floating body platform; 10 - Second diversion wall;

[0048] 11 - Second drainage wall; 12 - Floating box;

[0049] 13 - Mooring cable; 14 - Platform longitudinal sling;

[0050] 15 - Platform suction bucket; 16 - Transverse sling;

[0051] 17 - Top crossbar; 18 - Bottom crossbar;

[0052] 19 - Retaining wall body; 20 - Flow-through hole;

[0053] 21 - First lifting device; 22 - Second lifting device;

[0054] 23 - Third lifting device; 24 - Fourth lifting device;

[0055] 25 - Fifth lifting device; 26 - First retaining wall longitudinal sling;

[0056] 27 - First diversion wall unit; 28 - Second diversion wall unit;

[0057] 29 - Second retaining wall longitudinal sling; 30 - First drainage wall unit;

[0058] 31 - Second drainage wall unit; 32 - Third retaining wall longitudinal sling;

[0059] 33 - Third diversion wall unit; 34 - Fourth diversion wall unit;

[0060] 35 - Fourth retaining wall longitudinal sling; 36 - Third drainage wall unit;

[0061] 37 - Fourth drainage wall unit; 38 - First lifting ring;

[0062] 39 - Second lifting ring; 40 - Third lifting ring;

[0063] 41 - Fourth lifting ring; 42 - Fifth lifting ring;

[0064] 43 - Sixth lifting ring; 44 - Seventh lifting ring;

[0065] 45 - Eighth lifting ring; 46 - Ninth lifting ring;

[0066] 47 - First retaining wall suction bucket; 48 - Second retaining wall suction bucket;

[0067] 49 - Third retaining wall suction bucket; 50 - Fourth retaining wall suction bucket;

[0068] Ⅰ - Scour improvement area; Ⅱ - Seabed surface. Detailed implementation mode

[0069] In order to further understand the content, features and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows:

[0070] As shown in the attached Figures 1 to 4 figure, a current retaining wall is provided. The current retaining wall is arranged in front of the scouring improvement area I. The current retaining wall includes a left retaining wall 1 and a right retaining wall 2. The left retaining wall 1 and the right retaining wall 2 are symmetric about the center line of the scouring improvement area I. The first end of the left retaining wall 1 and the first end of the right retaining wall 2 are located on the center line and form a common end. The second end of the left retaining wall 1 extends from the common end to the vicinity of the left boundary of the scouring improvement area I in the lower left direction. The second end of the right retaining wall 2 extends from the common end to the vicinity of the right boundary of the scouring improvement area I in the lower right direction. Among them, a central floating platform 3 is provided on the common end. The left retaining wall 1 includes a first wake floating platform 4 at the second end and a first diversion floating platform 5 between the central floating platform 3 and the first wake floating platform 4. A first diversion wall 6 is provided between the central floating platform 3 and the first diversion floating platform 5, and a first diversion wall 7 is provided between the first diversion floating platform 5 and the first wake floating platform 4. The right retaining wall 2 includes a second wake floating platform 8 at the second end and a second diversion floating platform 9 between the central floating platform 3 and the second wake floating platform 8. A second diversion wall 10 is provided between the central floating platform 3 and the second diversion floating platform 9, and a second diversion wall 11 is provided between the second diversion floating platform 9 and the second wake floating platform 8. The left retaining wall 1 and the right retaining wall 2 have a total of eight parts and are smoothly connected into an integral body from left to right. The left retaining wall 1 and the right retaining wall 2 are symmetrically arranged in front of the target scouring improvement area I through the central floating platform 3.

[0071] The central floating body platform 3, the first diversion floating body platform 5, the first wake floating body platform 4, the second diversion floating body platform 9 and the second wake floating body platform 8 all include a floating box 12 and an anchoring system. Among them, the anchoring system includes a mooring cable 13, a platform longitudinal sling 14 and a platform suction bucket 15; the first end of the mooring cable 13 is fixedly connected to the floating box 12, and the second end is anchored in the seabed surface II; the platform suction bucket 15 is fixed in the seabed surface II below the floating box 12, and the first end of the platform longitudinal sling 14 is fixedly connected to the floating box 12, and the second end is anchored on the platform suction bucket 15. Adjacent floating body platforms are connected by a transverse sling 16 anchored on the floating box 12. Specifically, between the floating box 12 of the central floating body platform 3 and the floating box 12 of the first diversion floating body platform 5, between the floating box 12 of the first diversion floating body platform 5 and the floating box 12 of the first wake floating body platform 4, between the floating box 12 of the central floating body platform 3 and the floating box 12 of the second diversion floating body platform 9, and between the floating box 12 of the second diversion floating body platform 9 and the floating box 12 of the second wake floating body platform 8 are all connected by a transverse sling 16.

[0072] The first diversion wall 6, the first diversion wall 7, the second diversion wall 10 and the second diversion wall 11 all include a top cross bar 17, a bottom cross bar 18 and a retaining wall body 19 arranged between the top cross bar 17 and the bottom cross bar 18. The upper and lower ends of the retaining wall body 19 are respectively tied to the top cross bar 17 and the bottom cross bar 18. Flow holes 20 are formed in the retaining wall body 19. The diameter of the flow holes 20 is 10 cm to 20 cm, and the spacing is 10 cm to 20 cm, which has a flow disturbance effect, locally changes the direction and speed of the sea current, and plays a role in strengthening the retention of the foundation soil.

[0073] In this embodiment, a first retaining wall longitudinal cable 26 is arranged between the platform longitudinal cable 14 of the central floating body platform 3 and the platform longitudinal cable 14 of the first diversion floating body platform 5, so that the first diversion wall 6 is divided into a first diversion wall unit 27 and a second diversion wall unit 28; the first end of the first retaining wall longitudinal cable 26 is fixedly connected to the transverse cable 16 between the central floating body platform 3 and the first diversion floating body platform 5, and the second end of the first retaining wall longitudinal cable 26 is anchored to the first retaining wall suction bucket 47, and the first retaining wall suction bucket 47 is fixed in the seabed surface II. A second retaining wall longitudinal cable 29 is arranged between the platform longitudinal cable 14 of the first diversion floating body platform 5 and the platform longitudinal cable 14 of the first wake floating body platform 4, so that the first diversion wall 7 is divided into a first diversion wall unit 30 and a second diversion wall unit 31; the first end of the second retaining wall longitudinal cable 29 is fixedly connected to the transverse cable 16 between the first diversion floating body platform 5 and the first wake floating body platform 4, and the second end of the second retaining wall longitudinal cable 29 is anchored to the second retaining wall suction bucket 48, and the second retaining wall suction bucket 48 is fixed in the seabed surface II. A third retaining wall longitudinal cable 32 is arranged between the platform longitudinal cable 14 of the central floating body platform 3 and the platform longitudinal cable 14 of the second diversion floating body platform 9, so that the second diversion wall 10 is divided into a third diversion wall unit 33 and a fourth diversion wall unit 34; the first end of the third retaining wall longitudinal cable 32 is fixedly connected to the transverse cable 16 between the central floating body platform 3 and the second diversion floating body platform 9, and the second end of the third retaining wall longitudinal cable 32 is anchored to the third retaining wall suction bucket 49, and the third retaining wall suction bucket 49 is fixed in the seabed surface II. A fourth retaining wall longitudinal cable 35 is arranged between the platform longitudinal cable 14 of the second diversion floating body platform 9 and the platform longitudinal cable 14 of the second wake floating body platform 8, so that the second diversion wall 11 is divided into a third diversion wall unit 36 and a fourth diversion wall unit 37; the first end of the fourth retaining wall longitudinal cable 35 is fixedly connected to the transverse cable 16 between the second diversion floating body platform 9 and the second wake floating body platform 8, and the second end of the fourth retaining wall longitudinal cable 35 is anchored to the fourth retaining wall suction bucket 50, and the fourth retaining wall suction bucket 50 is fixed in the seabed surface II.

[0074] At the middle positions of the top crossbar 17 and the bottom crossbar 18 of the first diversion wall 6, first lifting rings 38 are respectively arranged, and both of the two first lifting rings 38 are sleeved on the first longitudinal sling 26 of the retaining wall; at the middle positions of the top crossbar 17 and the bottom crossbar 18 of the first drainage wall 7, second lifting rings 39 are respectively arranged, and both of the two second lifting rings 39 are sleeved on the second longitudinal sling 29 of the retaining wall; at the middle positions of the top crossbar 17 and the bottom crossbar 18 of the second diversion wall 10, third lifting rings 40 are respectively arranged, and both of the two third lifting rings 40 are sleeved on the third longitudinal sling 32 of the retaining wall; at the middle positions of the top crossbar 17 and the bottom crossbar 18 of the second drainage wall 11, fourth lifting rings 41 are respectively arranged, and both of the two fourth lifting rings 41 are sleeved on the fourth longitudinal sling 35 of the retaining wall. Moreover, between the first end of the top crossbar 17 of the first diversion wall 6 and the first end of the top crossbar 17 of the first drainage wall 7, and between the first end of the bottom crossbar 18 of the first diversion wall 6 and the first end of the bottom crossbar 18 of the first drainage wall 7, they are respectively connected to each other through fifth lifting rings 42, and both of the two fifth lifting rings 42 are sleeved on the platform longitudinal sling 14 of the first drainage floating body platform 5; between the first end of the top crossbar 17 of the second diversion wall 10 and the first end of the top crossbar 17 of the second drainage wall 11, and between the first end of the bottom crossbar 18 of the second diversion wall 10 and the first end of the bottom crossbar 18 of the second drainage wall 11, they are respectively connected to each other through sixth lifting rings 43, and both of the two sixth lifting rings 43 are sleeved on the platform longitudinal sling 14 of the second drainage floating body platform 9; between the second end of the top crossbar 17 of the first diversion wall 6 and the second end of the top crossbar 17 of the second diversion wall 10, and between the second end of the bottom crossbar 18 of the first diversion wall 6 and the second end of the bottom crossbar 18 of the second diversion wall 10, they are respectively connected to each other through seventh lifting rings 44, and both of the two seventh lifting rings 44 are sleeved on the platform longitudinal sling 14 of the central floating body platform 3; at the second ends of the top crossbar 17 and the bottom crossbar 18 of the first drainage wall 7, eighth lifting rings 45 are respectively arranged, and both of the two eighth lifting rings 45 are sleeved on the platform longitudinal sling 14 of the first wake floating body platform 4; at the second ends of the top crossbar 17 and the bottom crossbar 18 of the second drainage wall 11, ninth lifting rings 46 are respectively arranged, and both of the two ninth lifting rings 46 are sleeved on the platform longitudinal sling 14 of the second wake floating body platform 8.

[0075] The first diversion wall 6, the first drainage wall 7, the second diversion wall 10 and the second drainage wall 11 can move up and down simultaneously under the action of a lifting system. Among them, the lifting system includes a first lifting device 21 arranged at the central floating body platform 3, a second lifting device 22 arranged at the first drainage floating body platform 5, a third lifting device 23 arranged at the first wake floating body platform 4, a fourth lifting device 24 arranged at the second drainage floating body platform 9, and a fifth lifting device 25 arranged at the second wake floating body platform 8. The first lifting device 21 controls the first diversion wall monomer 27 and the third diversion wall monomer 33 simultaneously; the second lifting device 22 controls the second diversion wall monomer 28 and the first drainage wall monomer 30 simultaneously; the third lifting device 23 controls the second drainage wall monomer 31; the fourth lifting device 24 controls the fourth diversion wall monomer 34 and the third drainage wall monomer 36 simultaneously; the fifth lifting device 25 controls the fourth drainage wall monomer 37.

[0076] Specifically, the first lifting device 21, the second lifting device 22, the third lifting device 23, the fourth lifting device 24 and the fifth lifting device 25 each include an adjusting sling and an electric winch. The first end of the adjusting sling of the first lifting device 21 is fixedly connected to the top crossbar 17 of the first split wall monomer 27 and the top crossbar 17 of the third split wall monomer 33, the second end of the adjusting sling of the first lifting device 21 is fixedly connected to the bottom crossbar 18 of the first split wall monomer 27 and the bottom crossbar 18 of the third split wall monomer 33, the middle part of the adjusting sling of the first lifting device 21 is tied to the electric winch of the first lifting device 21, and the electric winch of the first lifting device 21 is arranged on the floating tank 12 of the central floating body platform 3. The first end of the adjusting sling of the second lifting device 22 is fixedly connected to the top crossbar 17 of the second split wall monomer 28 and the top crossbar 17 of the first diversion wall monomer 30, the second end of the adjusting sling of the second lifting device 22 is fixedly connected to the bottom crossbar 18 of the second split wall monomer 28 and the bottom crossbar 18 of the first diversion wall monomer 30, the middle part of the adjusting sling of the second lifting device 22 is tied to the electric winch of the second lifting device 22, and the electric winch of the second lifting device 22 is arranged on the floating tank 12 of the first diversion floating body platform 5. The first end of the adjusting sling of the third lifting device 23 is fixedly connected to the top crossbar 17 of the second diversion wall monomer 31, the second end of the adjusting sling of the third lifting device 23 is fixedly connected to the bottom crossbar 18 of the second diversion wall monomer 31, the middle part of the adjusting sling of the third lifting device 23 is tied to the electric winch of the third lifting device 23, and the electric winch of the third lifting device 23 is arranged on the floating tank 12 of the first wake floating body platform 4. The first end of the adjusting sling of the fourth lifting device 24 is fixedly connected to the top crossbar 17 of the fourth split wall monomer 34 and the top crossbar 17 of the third diversion wall monomer 36, the second end of the adjusting sling of the fourth lifting device 24 is fixedly connected to the bottom crossbar 18 of the fourth split wall monomer 34 and the bottom crossbar 18 of the third diversion wall monomer 36, the middle part of the adjusting sling of the fourth lifting device 24 is tied to the electric winch of the fourth lifting device 24, and the electric winch of the fourth lifting device 24 is arranged on the floating tank 12 of the second diversion floating body platform 9. The first end of the adjusting sling of the fifth lifting device 25 is fixedly connected to the top crossbar 17 of the fourth diversion wall monomer 37, the second end of the adjusting sling of the fifth lifting device 25 is fixedly connected to the bottom crossbar 18 of the fourth diversion wall monomer 37, the middle part of the adjusting sling of the fifth lifting device 25 is tied to the electric winch of the fifth lifting device 25, and the electric winch of the fifth lifting device 25 is arranged on the floating tank 12 of the second wake floating body platform 8.

[0077] Among them, the transverse sling 16, the platform longitudinal sling 14, the first retaining wall longitudinal sling 26, the second retaining wall longitudinal sling 29, the third retaining wall longitudinal sling 32, the fourth retaining wall longitudinal sling 35, the adjusting sling, the top cross bar 17 and the bottom cross bar 18 are all made of steel structure; the mooring cable 13 is a steel cable; the retaining wall body 19 is a highly tough geotextile with antioxidant and corrosion resistance properties.

[0078] The construction method of the above-mentioned ocean current retaining wall includes the following steps:

[0079] Step 1: After the prefabricated floating box 12 and the platform suction bucket 15 are integrally floated to the designated position, sink the platform suction bucket 15 below the seabed surface II. Connect the first end of the platform longitudinal sling 14 to the bottom surface of the floating box 12 and anchor the second end on the platform suction bucket 15 to complete the position fixation of the central floating body platform 3, the first diversion floating body platform 5, and the second diversion floating body platform 9.

[0080] Step 2: Connect the first diversion floating body platform 5, the central floating body platform 3, and the second diversion floating body platform 9 into a whole from left to right through the transverse sling 16, and the transverse sling 16 is 2m to 5m above the highest sea level.

[0081] Step 3: Arrange the first retaining wall longitudinal sling 26, and one first retaining wall longitudinal sling 26 can be arranged every 20m to 50m in the length direction of the transverse sling 16: The first end of the first retaining wall longitudinal sling 26 is tied and fixed to the transverse sling 16 between the central floating body platform 3 and the first diversion floating body platform 5, and the second end is anchored on the first retaining wall suction bucket 47, and the first retaining wall suction bucket 47 is sunk below the seabed surface II.

[0082] Step 4: Arrange the third retaining wall longitudinal sling 32 according to the method shown in Step 3.

[0083] Step 5, arranging the first split wall unit 27 and the second split wall unit 28: arrange the top crossbar 17, bottom crossbar 18 and retaining wall body 19 of the first split wall unit 27 between the platform longitudinal sling 14 of the central floating body platform 3 and the first retaining wall longitudinal sling 26. The top crossbar 17, bottom crossbar 18 and retaining wall body 19 of the first split wall unit 27 are tied into a whole. Arrange the top crossbar 17, bottom crossbar 18 and retaining wall body 19 of the second split wall unit 28 between the first retaining wall longitudinal sling 26 and the platform longitudinal sling 14 of the first diversion floating body platform 5. The top crossbar 17, bottom crossbar 18 and retaining wall body 19 of the second split wall unit 28 are tied into a whole. Among them, the top crossbars 17 of the first split wall unit 27 and the second split wall unit 28 shall not be higher than the bottom surface of the floating box 12. Connect the top crossbar 17 between the first split wall unit 27 and the top crossbar 17 of the second split wall unit 28, and the bottom crossbar 18 between the first split wall unit 27 and the bottom crossbar 18 of the second split wall unit 28 to each other as a whole through the first sling rings 38, and put the two first sling rings 38 on the first retaining wall longitudinal sling 26. A crossbar can be arranged between the longitudinal slings every 5m - 20m in the width direction. Determine the number of crossbars according to the water depth, but at least two crossbeams (top crossbar 17 and bottom crossbar 18) shall be arranged, and the length of the crossbeam is equal to the spacing between adjacent longitudinal slings.

[0084] Step 6, arrange the third split wall unit 33 and the fourth split wall unit 34 according to the method shown in Step 5.

[0085] Step 7, connect the top crossbar 17 between the first split wall unit 27 and the top crossbar 17 of the third split wall unit 33, and the bottom crossbar 18 between the first split wall unit 27 and the bottom crossbar 18 of the third split wall unit 33 to each other as a whole through the seventh sling rings 44, and put the two seventh sling rings 44 on the platform longitudinal sling 14 of the central floating body platform 3.

[0086] Step 8, install the first lifting device 21, the second lifting device 22 and the third lifting device 23. The adjusting sling of the lifting device is fixedly connected to the corresponding crossbeam. When it is necessary to disassemble, replace or repair the retaining wall body 19, the adjusting sling is taken in by the electric winch of the lifting device to lift the retaining wall body 19 out of the water surface.

[0087] Step 9, determine the positions of the first wake floating body platform 4 and the second wake floating body platform 8 according to the scope of the scouring improvement area Ⅰ. Install the first wake floating body platform 4, the second wake floating body platform 8, the second retaining wall longitudinal sling 29, the fourth retaining wall longitudinal sling 35, the first diversion wall unit 30, the second diversion wall unit 31, the third diversion wall unit 36, the fourth diversion wall unit 37, the third lifting device 23 and the fifth lifting device 25 according to the methods shown in Step 1 to Step 8 to complete the construction of the ocean current retaining wall.

[0088] When the ocean current comes, the retaining wall body 19 bends into an arc shape. Under the action of the first diversion wall 6 and the second diversion wall 10, the ocean current is divided into two parts. One part of the ocean current is diverted to the first diversion wall 7 of the left retaining wall 1, and the other part of the ocean current is diverted to the second diversion wall 11 of the right retaining wall 2, so that most of the ocean current flows away from the scouring improvement area I. A small amount of ocean current flows through the flow holes 20 into the scouring improvement area I, locally changing its flow velocity and direction, greatly reducing the ocean current velocity in the scouring improvement area I, causing the sediment in the ocean current to deposit, and effectively solving the problem of the movement of the foundation soil caused by scouring under the action of the ocean current.

[0089] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A current barrier, the current barrier being arranged in front of the scour improvement area (Ⅰ), characterized in that, The current retaining wall includes a left retaining wall (1) and a right retaining wall (2). The left retaining wall (1) and the right retaining wall (2) are symmetric about the center line of the scouring improvement area (Ⅰ). The first ends of the left retaining wall (1) and the right retaining wall (2) are located on the center line and form a common end. The second end of the left retaining wall (1) extends leftward and downward from the common end to near the left boundary of the scouring improvement area (Ⅰ). The second end of the right retaining wall (2) extends rightward and downward from the common end to near the right boundary of the scouring improvement area (Ⅰ). Among them, a central floating body platform (3) is provided on the common end; The left retaining wall (1) includes a first wake floating body platform (4) at the second end and a first drainage floating body platform (5) between the central floating body platform (3) and the first wake floating body platform (4). A first diversion wall (6) is provided between the central floating body platform (3) and the first drainage floating body platform (5), and a first drainage wall (7) is provided between the first drainage floating body platform (5) and the first wake floating body platform (4); The right retaining wall (2) includes a second wake floating body platform (8) at the second end and a second drainage floating body platform (9) between the central floating body platform (3) and the second wake floating body platform (8). A second diversion wall (10) is provided between the central floating body platform (3) and the second drainage floating body platform (9), and a second drainage wall (11) is provided between the second drainage floating body platform (9) and the second wake floating body platform (8). Among them, the central floating body platform (3), the first drainage floating body platform (5), the first wake floating body platform (4), the second drainage floating body platform (9) and the second wake floating body platform (8) all include floating boxes (12) and anchoring systems; Among them, the anchoring system includes a mooring cable (13), a platform longitudinal sling (14) and a platform suction bucket (15). The first end of the mooring cable (13) is fixedly connected to the floating box (12), and the second end is anchored in the seabed surface (Ⅱ). The platform suction bucket (15) is fixed in the seabed surface (Ⅱ) below the floating box (12). The first end of the platform longitudinal sling (14) is fixedly connected to the floating box (12), and the second end is anchored on the platform suction bucket (15); Among them, the first diversion wall (6), the first drainage wall (7), the second diversion wall (10) and the second drainage wall (11) can move up and down simultaneously under the action of a lifting system; Among them, the lifting system includes a first lifting device (21) provided at the central floating body platform (3), a second lifting device (22) provided at the first drainage floating body platform (5), a third lifting device (23) provided at the first wake floating body platform (4), a fourth lifting device (24) provided at the second drainage floating body platform (9) and a fifth lifting device (25) provided at the second wake floating body platform (8).

2. The current blocking wall according to claim 1, wherein Between the pontoon (12) of the central floating body platform (3) and the pontoon (12) of the first diversion floating body platform (5), between the pontoon (12) of the first diversion floating body platform (5) and the pontoon (12) of the first wake floating body platform (4), between the pontoon (12) of the central floating body platform (3) and the pontoon (12) of the second diversion floating body platform (9), and between the pontoon (12) of the second diversion floating body platform (9) and the pontoon (12) of the second wake floating body platform (8), they are all connected by transverse slings (16).

3. The current blocking wall according to claim 1, characterized in that, The first dividing wall (6), the first diversion wall (7), the second dividing wall (10), and the second diversion wall (11) all include a top cross bar (17), a bottom cross bar (18), and a retaining wall body (19) disposed between the top cross bar (17) and the bottom cross bar (18). The upper and lower ends of the retaining wall body (19) are respectively fixedly connected to the top cross bar (17) and the bottom cross bar (18), and flow holes (20) are formed in the retaining wall body (19).

4. The current blocking wall according to claim 1, characterized in that, A first retaining wall longitudinal sling (26) is disposed between the platform longitudinal sling (14) of the central floating body platform (3) and the platform longitudinal sling (14) of the first diversion floating body platform (5), such that the first dividing wall (6) is separated into a first dividing wall monomer (27) and a second dividing wall monomer (28); a second retaining wall longitudinal sling (29) is disposed between the platform longitudinal sling (14) of the first diversion floating body platform (5) and the platform longitudinal sling (14) of the first wake floating body platform (4), such that the first diversion wall (7) is separated into a first diversion wall monomer (30) and a second diversion wall monomer (31); a third retaining wall longitudinal sling (32) is disposed between the platform longitudinal sling (14) of the central floating body platform (3) and the platform longitudinal sling (14) of the second diversion floating body platform (9), such that the second dividing wall (10) is separated into a third dividing wall monomer (33) and a fourth dividing wall monomer (34); a fourth retaining wall longitudinal sling (35) is disposed between the platform longitudinal sling (14) of the second diversion floating body platform (9) and the platform longitudinal sling (14) of the second wake floating body platform (8), such that the second diversion wall (11) is separated into a third diversion wall monomer (36) and a fourth diversion wall monomer (37); the first lifting device (21) simultaneously controls the first dividing wall monomer (27) and the third dividing wall monomer (33); the second lifting device (22) simultaneously controls the second dividing wall monomer (28) and the first diversion wall monomer (30); the third lifting device (23) controls the second diversion wall monomer (31); the fourth lifting device (24) simultaneously controls the fourth dividing wall monomer (34) and the third diversion wall monomer (36); the fifth lifting device (25) controls the fourth diversion wall monomer (37).

5. The current barrier according to claim 4, characterized in that, At the middle positions of the top cross bar (17) and the bottom cross bar (18) of the first diversion wall (6), first lifting rings (38) are respectively arranged, and both of the two first lifting rings (38) are sleeved on the first retaining wall longitudinal sling (26); at the middle positions of the top cross bar (17) and the bottom cross bar (18) of the first diversion wall (7), second lifting rings (39) are respectively arranged, and both of the two second lifting rings (39) are sleeved on the second retaining wall longitudinal sling (29); at the middle positions of the top cross bar (17) and the bottom cross bar (18) of the second diversion wall (10), third lifting rings (40) are respectively arranged, and both of the two third lifting rings (40) are sleeved on the third retaining wall longitudinal sling (32); at the middle positions of the top cross bar (17) and the bottom cross bar (18) of the second diversion wall (11), fourth lifting rings (41) are respectively arranged, and both of the two fourth lifting rings (41) are sleeved on the fourth retaining wall longitudinal sling (35). Moreover, between the first end of the top cross bar (17) of the first diversion wall (6) and the first end of the top cross bar (17) of the first diversion wall (7), and between the first end of the bottom cross bar (18) of the first diversion wall (6) and the first end of the bottom cross bar (18) of the first diversion wall (7), they are respectively connected to each other through fifth lifting rings (42), and both of the two fifth lifting rings (42) are sleeved on the platform longitudinal sling (14) of the first floating body platform (5); between the first end of the top cross bar (17) of the second diversion wall (10) and the first end of the top cross bar (17) of the second diversion wall (11), and between the first end of the bottom cross bar (18) of the second diversion wall (10) and the first end of the bottom cross bar (18) of the second diversion wall (11), they are respectively connected to each other through sixth lifting rings (43), and both of the two sixth lifting rings (43) are sleeved on the platform longitudinal sling (14) of the second floating body platform (9); between the second end of the top cross bar (17) of the first diversion wall (6) and the second end of the top cross bar (17) of the second diversion wall (10), and between the second end of the bottom cross bar (18) of the first diversion wall (6) and the second end of the bottom cross bar (18) of the second diversion wall (10), they are respectively connected to each other through seventh lifting rings (44), and both of the two seventh lifting rings (44) are sleeved on the platform longitudinal sling (14) of the central floating body platform (3); at the second ends of the top cross bar (17) and the bottom cross bar (18) of the first diversion wall (7), eighth lifting rings (45) are respectively arranged, and both of the two eighth lifting rings (45) are sleeved on the platform longitudinal sling (14) of the first wake floating body platform (4); at the second ends of the top cross bar (17) and the bottom cross bar (18) of the second diversion wall (11), ninth lifting rings (46) are respectively arranged, and both of the two ninth lifting rings (46) are sleeved on the platform longitudinal sling (14) of the second wake floating body platform (8).

6. The current blocking wall according to claim 4, characterized in that, The first lifting device (21), the second lifting device (22), the third lifting device (23), the fourth lifting device (24) and the fifth lifting device (25) all include an adjusting sling and an electric winch; The first end of the adjusting sling of the first lifting device (21) is fixedly connected to the top crossbar (17) of the first split wall unit (27) and the top crossbar (17) of the third split wall unit (33), and the second end of the adjusting sling of the first lifting device (21) is fixedly connected to the bottom crossbar (18) of the first split wall unit (27) and the bottom crossbar (18) of the third split wall unit (33). The middle part of the adjusting sling of the first lifting device (21) is tied to the electric winch of the first lifting device (21), and the electric winch of the first lifting device (21) is arranged on the floating box (12) of the central floating body platform (3); The first end of the adjusting sling of the second lifting device (22) is fixedly connected to the top crossbar (17) of the second split wall unit (28) and the top crossbar (17) of the first diversion wall unit (30), and the second end of the adjusting sling of the second lifting device (22) is fixedly connected to the bottom crossbar (18) of the second split wall unit (28) and the bottom crossbar (18) of the first diversion wall unit (30). The middle part of the adjusting sling of the second lifting device (22) is tied to the electric winch of the second lifting device (22), and the electric winch of the second lifting device (22) is arranged on the floating box (12) of the first diversion floating body platform (5); The first end of the adjusting sling of the third lifting device (23) is fixedly connected to the top crossbar (17) of the second diversion wall unit (31), and the second end of the adjusting sling of the third lifting device (23) is fixedly connected to the bottom crossbar (18) of the second diversion wall unit (31). The middle part of the adjusting sling of the third lifting device (23) is tied to the electric winch of the third lifting device (23), and the electric winch of the third lifting device (23) is arranged on the floating box (12) of the first wake floating body platform (4); The first end of the adjusting sling of the fourth lifting device (24) is fixedly connected to the top crossbar (17) of the fourth split wall unit (34) and the top crossbar (17) of the third diversion wall unit (36), and the second end of the adjusting sling of the fourth lifting device (24) is fixedly connected to the bottom crossbar (18) of the fourth split wall unit (34) and the bottom crossbar (18) of the third diversion wall unit (36). The middle part of the adjusting sling of the fourth lifting device (24) is tied to the electric winch of the fourth lifting device (24), and the electric winch of the fourth lifting device (24) is arranged on the floating box (12) of the second diversion floating body platform (9); The first end of the adjusting sling of the fifth lifting device (25) is fixedly connected to the top cross bar (17) of the fourth drainage wall unit (37), the second end of the adjusting sling of the fifth lifting device (25) is fixedly connected to the bottom cross bar (18) of the fourth drainage wall unit (37), the middle part of the adjusting sling of the fifth lifting device (25) is tied and connected to the electric winch of the fifth lifting device (25), and the electric winch of the fifth lifting device (25) is arranged on the floating box (12) of the second wake floating body platform (8).

7. The current barrier according to claim 4, characterized in that, The first end of the first retaining wall longitudinal sling (26) is fixedly connected to the transverse sling (16) between the central floating body platform (3) and the first drainage floating body platform (5), the second end of the first retaining wall longitudinal sling (26) is anchored to the first retaining wall suction bucket (47), and the first retaining wall suction bucket (47) is fixed in the seabed surface (Ⅱ); The first end of the second retaining wall longitudinal sling (29) is fixedly connected to the transverse sling (16) between the first drainage floating body platform (5) and the first wake floating body platform (4), the second end of the second retaining wall longitudinal sling (29) is anchored to the second retaining wall suction bucket (48), and the second retaining wall suction bucket (48) is fixed in the seabed surface (Ⅱ); The first end of the third retaining wall longitudinal sling (32) is fixedly connected to the transverse sling (16) between the central floating body platform (3) and the second drainage floating body platform (9), the second end of the third retaining wall longitudinal sling (32) is anchored to the third retaining wall suction bucket (49), and the third retaining wall suction bucket (49) is fixed in the seabed surface (Ⅱ); The first end of the fourth retaining wall longitudinal sling (35) is fixedly connected to the transverse sling (16) between the second drainage floating body platform (9) and the second wake floating body platform (8), the second end of the fourth retaining wall longitudinal sling (35) is anchored to the fourth retaining wall suction bucket (50), and the fourth retaining wall suction bucket (50) is fixed in the seabed surface (Ⅱ).

8. A construction method of the ocean current retaining wall according to any one of the above-mentioned claims 1 to 7, characterized in that, Including the following steps: Step 1: Sink the platform suction bucket (15) below the specified position of the seabed surface (Ⅱ). After the prefabricated floating box (12) is integrally floated to the specified position, connect the first end of the platform longitudinal sling (14) to the bottom surface of the floating box (12) and the second end to the platform suction bucket (15) to complete the position fixation of the central floating body platform (3), the first drainage floating body platform (5), and the second drainage floating body platform (9); Step 2: Connect the first drainage floating body platform (5), the central floating body platform (3), and the second drainage floating body platform (9) into a whole through the transverse sling (16); Step 3: Arrange the first retaining wall longitudinal sling (26): The first end of the first retaining wall longitudinal sling (26) is tied and fixed to the transverse sling (16) between the central floating body platform (3) and the first drainage floating body platform (5), and the second end is anchored to the first retaining wall suction bucket (47), and the first retaining wall suction bucket (47) is sunk below the seabed surface (Ⅱ); Step 4: Arrange the longitudinal sling (32) of the third retaining wall according to the method shown in Step 3. Step 5: Arrange the first diversion wall unit (27) and the second diversion wall unit (28): Arrange the top crossbar (17), bottom crossbar (18) and retaining wall body (19) of the first diversion wall unit (27) between the platform longitudinal sling (14) of the central floating body platform (3) and the longitudinal sling (26) of the first retaining wall. The top crossbar (17), bottom crossbar (18) and retaining wall body (19) of the first diversion wall unit (27) are tied into a whole; Arrange the top crossbar (17), bottom crossbar (18) and retaining wall body (19) of the second diversion wall unit (28) between the longitudinal sling (26) of the first retaining wall and the platform longitudinal sling (14) of the first diversion floating body platform (5). The top crossbar (17), bottom crossbar (18) and retaining wall body (19) of the second diversion wall unit (28) are tied into a whole; Connect the top crossbar (17) between the first diversion wall unit (27) and the top crossbar (17) of the second diversion wall unit (28), and the bottom crossbar (18) between the first diversion wall unit (27) and the bottom crossbar (18) of the second diversion wall unit (28) to each other through the first sling ring (38) and form a whole, and put the two first sling rings (38) on the longitudinal sling (26) of the first retaining wall. Step 6: Arrange the third diversion wall unit (33) and the fourth diversion wall unit (34) according to the method shown in Step 5. Step 7: Connect the top crossbar (17) between the first diversion wall unit (27) and the top crossbar (17) of the third diversion wall unit (33), and the bottom crossbar (18) between the first diversion wall unit (27) and the bottom crossbar (18) of the third diversion wall unit (33) to each other through the seventh sling ring (44) and form a whole, and put the two seventh sling rings (44) on the platform longitudinal sling (14) of the central floating body platform (3). Step 8: Install the first lifting device (21), the second lifting device (22) and the fourth lifting device (24). The adjusting sling of the lifting device is fixedly connected to the corresponding crossbeam. When disassembly, replacement or maintenance is needed, the adjusting sling is wound up by the electric winch of the lifting device to lift the retaining wall body (19) out of the water surface. Step 9: Determine the positions of the first wake floating body platform (4) and the second wake floating body platform (8), and install the first wake floating body platform (4), the second wake floating body platform (8), the longitudinal sling (29) of the second retaining wall, the longitudinal sling (35) of the fourth retaining wall, the first diversion wall unit (30), the second diversion wall unit (31), the third diversion wall unit (36), the fourth diversion wall unit (37), the third lifting device (23) and the fifth lifting device (25) according to the methods shown in Steps 1 to 8 to complete the construction of the ocean current retaining wall.

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