CN113062345A

CN113062345A - Underwater pile foundation scouring protection device with scouring prevention hole

Info

Publication number: CN113062345A
Application number: CN202110328917.4A
Authority: CN
Inventors: 张宁; 马宁; 陈旭光; 尹世洋; 夏建新; 宋宇恒; 杨畅
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2021-03-27
Filing date: 2021-03-27
Publication date: 2021-07-02
Anticipated expiration: 2041-03-27
Also published as: CN113062345B

Abstract

The invention discloses an underwater pile foundation scouring protection device with scouring prevention holes, and belongs to the technical field of underwater pile protection. The utility model provides a take pile foundation under water of scour prevention hole to erode protector, includes the stake under water, the lower half of stake under water buries in the bottom soil, the first half of stake under water soaks in water, the first outside cover of stake under water is equipped with the protection network, fixing device is installed to the bottom of protection network, just fixing device overlaps and establishes the outside of stake under water, the lower half outside cover of stake under water is equipped with admittedly native device, just the top and the fixing device of admittedly native device are connected, the internally mounted of admittedly native device has connecting device. The invention solves the problems that the bottom soil around the foundation single pile is easy to be washed away by seawater and the outer side of the foundation single pile is easy to be corroded by seawater.

Description

Underwater pile foundation scouring protection device with scouring prevention hole

Technical Field

The invention relates to the technical field of underwater pile foundation protection, in particular to an underwater pile foundation scouring protection device with scouring prevention holes.

Background

Offshore wind power is a field with higher technical complexity, and the technical difficulty of the offshore wind power is further improved due to the complexity of the offshore wind power environment. In terms of the environment, the environmental influence factors of offshore wind power mainly refer to weather hydrological condition factors such as wind, waves and current. After the wind power plant is built, the hydrodynamic force action of waves, currents and the like can seriously wash the single pile of the fan foundation, so that the stability of the single pile of the fan foundation is influenced, the protection of the offshore foundation pile is different from that of the foundation pile under the river, the flowing direction of the river is relatively fixed, and the uncertainty of the flowing direction of the seawater is strong. In order to improve the scour prevention ability of offshore wind farm and then improve its structural stability, just need carry out scour prevention protection to offshore wind farm and handle, the protection of offshore wind farm faces following problem in reality:

1. seabed soil of seabed geological conditions mainly comprising silt, silty sandy soil and the like is easy to liquefy, and sea bottom waves and currents can wash around the foundation single pile to form a bottom pit, so that the stability of the foundation single pile is influenced.

2. The seawater can wash the single foundation pile in the flowing process, and the outer part of the single foundation pile can be seriously corroded in the past.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide an underwater pile foundation scouring protection device with scouring prevention holes, which aims to solve the problems in the background technology:

the bottom soil around the foundation single pile is easy to be washed away by seawater and the outer side of the foundation single pile is easy to be corroded by seawater.

2. Technical scheme

The utility model provides a take underwater pile foundation in scour protection hole to erode protector, includes basic single pile, the lower half of basic single pile buries in the bottom soil, the first half of basic single pile soaks in water, the first half outside cover of basic single pile is equipped with the protection network, fixing device is installed to the bottom of protection network, just fixing device establishes in the outside of basic single pile, the lower half outside cover of basic single pile is equipped with solid native device, just the top and the fixing device of solid native device are connected, the internally mounted of solid native device has connecting device.

Preferably, fixing device includes the retainer plate, the outside at basic single pile is established to the retainer plate cover, the outside welding of retainer plate has six connecting rods, the inside welding of connecting rod has the go-between, the go-between is provided with a plurality ofly, and a plurality of the centre of a circle of go-between is located the same point.

Preferably, the protection network includes four poles, a pole welding is at the top of go-between, the top welding of go-between has eight No. two poles, just No. two poles are located the outside of a pole, the top welding of go-between has eight No. three poles, just No. three poles are located the outside of No. two poles, the top welding of go-between has four No. four poles, just No. four poles are located the outside of No. three poles, the outside welding of a pole has a plurality of rings No. one, the outside welding of No. two poles has a plurality of rings No. two, just No. two the ring is located the below of a ring, the outside welding of No. three poles has a plurality of rings No. three, just No. three the ring is located the below of No. two rings, the outside welding of No. four poles has a plurality of rings, just No. four the ring is located the below of No. three rings.

Preferably, the soil fixing device comprises a plurality of soil fixing modules, flushing holes are formed in the soil fixing modules, a plurality of fixing grooves are welded on the outer sides of the soil fixing modules, moving grooves are formed in the inner sides of the fixing grooves, elastic rubber is filled in the moving grooves, fixing balls are connected to the outer sides of the elastic rubber, threaded holes are formed in the tops of the fixing grooves, and pointed ends are arranged at the bottoms of the soil fixing modules.

Preferably, connecting device includes the connecting plate, the connecting plate is inserted and is established the inside of fixed slot, the top welding of connecting plate has the fixed block, just fixed block and screw hole threaded connection, the edge outside of connecting plate is equipped with the fixed orifices, just fixed orifices and fixed ball gomphosis, the bottom of connecting plate is equipped with the cutter, connecting device still includes the fixed plate, the top of fixed plate and the bottom threaded connection of retainer plate, the bottom welding of fixed plate is at the top of connecting plate.

Preferably, the soil fixing device further comprises an auxiliary device, the auxiliary device comprises an auxiliary module, an auxiliary hole is formed in the auxiliary module, a soil fixing module is inserted into the auxiliary hole, the auxiliary module is hexagonal, clamping pieces are welded on the outer sides of three sides of the auxiliary module, clamping grooves are formed in the outer sides of the other three sides of the auxiliary module, jacks are formed in the clamping pieces and the clamping grooves, and bolts are inserted into the jacks.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

1. the invention utilizes a protective net to buffer and guide ocean currents around a foundation single pile, and specifically comprises the following steps: the inner layer of the protective net is fixed by metal, the outer layer is coated with resin materials to prevent seawater corrosion, the protective net comprises four first rods, the first rods are welded at the top of a connecting ring, eight second rods are welded at the top of the connecting ring, the second rods are positioned on the outer side of the first rods, eight third rods are welded at the top of the connecting ring, the third rods are positioned on the outer side of the second rods, four fourth rods are welded at the top of the connecting ring, the fourth rods are positioned on the outer side of the third rods, a first rod, two second rods, two third rods and a fourth rod form a group of flow guide groups, and four flow guide groups are arranged, wherein the flow guide groups are arc-shaped when viewed from the top, a certain guiding effect can be achieved on the foundation single pile when seawater scours the foundation single pile from the front side, the seawater deviates outwards from the position of the fourth rod, so that the impact strength of the seawater on the foundation single pile is reduced, and the purpose of protecting the foundation single pile, a plurality of first rings are welded on the outer side of the first rod, a plurality of second rings are welded on the outer side of the second rod, the second rings are positioned below the first rings, a plurality of third rings are welded on the outer side of the third rod, the third ring is positioned below the second ring, a plurality of fourth rings are welded on the outer side of the fourth rod, the fourth rings are positioned below the third rings, the first ring, the second ring, the third ring and the fourth rings respectively form a group of buffer groups, the buffer groups are provided with a plurality of buffer groups, a protective net formed by the buffer groups can buffer seawater and a foundation single pile to prevent the foundation single pile from being damaged by the seawater which is washed too fast, the heights of the rings on the buffer groups are gradually increased from outside to inside, like this also can play certain upwards guide effect when buffering, prevent that the sea water downward flow from taking away the bottom soil in the single pile outside to cause the phenomenon of single pile stability reduction to take place.

2. The invention utilizes the soil fixing device to fix the bottom soil outside the bottom of the foundation single pile to prevent the sea bottom from being waved and washed to form a bottom pit around the foundation single pile and influence the stability of the foundation single pile, the soil fixing device is composed of a plurality of soil fixing modules, the soil fixing modules are externally hexagonal in design, the stability is strong and the assembly is easy, the inside of the soil fixing modules is provided with washing holes which can surround the bottom soil for protection and prevent the sea current from washing to take away the bottom soil, the outside of the soil fixing modules is welded with a plurality of fixing grooves which are used for the connection between the two soil fixing modules, the inside of the moving grooves is filled with elastic rubber, the outside of the elastic rubber is connected with a fixing ball, the top of the fixing grooves is provided with threaded holes, the connecting plate is inserted in the inside of the fixing grooves, the top of the connecting plate is welded with fixing blocks, the fixing blocks are in threaded connection with the, the fixing holes are embedded with the fixing balls, when the soil fixing device is used, the soil fixing modules are inserted into soil, the pointed ends of the bottoms of the soil fixing modules are convenient to insert, then the connecting plates are inserted into the fixing grooves, the fixing balls can continuously shrink under the extrusion action of the connecting plates in the downward inserting process until the connecting plates are inserted into the bottoms, the fixing balls and the fixing holes are located at the same positions, the radius of the fixing balls is the same as that of the circular fixing holes, the fixing balls are embedded with the fixing holes to realize fixing, then the fixing blocks are connected with the threaded holes by bolts, namely the connection between the two soil fixing modules is completed, three connecting plates at the connection positions of the three soil fixing modules can form a regular triangle and have strong stability, the connecting device also comprises a fixing plate, the top of the fixing plate is in threaded connection with the bottom of the fixing ring, the bottom of the fixing plate is welded at the top of the connecting plates, and thus the soil fixing device, the stability of the protective net is guaranteed, the splicing mode is adopted, the transportation and the installation are convenient, and the soil fixing effect is good.

3. The invention utilizes an auxiliary device to assist the installation of a soil fixing module, and specifically comprises the following steps: auxiliary device includes auxiliary module, auxiliary hole has been seted up to auxiliary module's inside, auxiliary hole is the hexagon, can let admittedly native module insert just, inject its position, auxiliary module is the hexagon, the wherein three limit outside welding of auxiliary module has the fastener, the other three limit outside is equipped with the draw-in groove, the jack has all been seted up to the inside of fastener and draw-in groove, the inside of jack is inserted and is equipped with the bolt, this device is when the installation, splice a plurality of auxiliary module around the stake under water earlier, insert the inside of jack with plug-in components, then insert the bolt in the jack and accomplish fixedly, then insert admittedly in the bottom soil along auxiliary hole with native module, treat after the installation of gu native module finish take away auxiliary device and installation connecting device can, utilize auxiliary device can be quick and accurate will gu native module to install in the assigned position.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of positions of first to fourth poles of the protection net of the present invention;

fig. 3 is a schematic diagram of the positions of first to fourth rings of the protection net of the present invention;

FIG. 4 is a schematic view of a retainer ring joint of the present invention;

FIG. 5 is a schematic diagram of a method for using the auxiliary device of the present invention;

FIG. 6 is a schematic view of the soil stabilization device and the connection device of the present invention;

FIG. 7 is a schematic view of the interior of the anchor ball of the present invention;

FIG. 8 is a schematic view of an auxiliary device of the present invention;

the reference numbers in the figures illustrate: 1. a foundation single pile; 2. a protective net; 201. a first rod; 202. a second rod; 203. a third rod; 204. a fourth rod; 205. a first ring; 206. ring II; 207. ring III; 208. ring four; 3. a fixing device; 301. a stationary ring; 302. a connecting rod; 303. a connecting ring; 4. a soil fixing device; 401. a soil fixing module; 402. flushing the hole; 403. fixing grooves; 404. fixing the ball; 405. a threaded hole; 406. a tip; 407. a moving groove; 408. an elastic rubber; 5. a connecting device; 501. a connecting plate; 502. a fixed block; 503. a fixing hole; 504. a cutter; 505. a fixing plate; 6. an auxiliary device; 601. an auxiliary module; 602. an auxiliary hole; 603. a fastener; 604. a jack; 605. a card slot; 606. and (4) a bolt.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, an underwater pile foundation scour protection device with scour prevention holes comprises a foundation single pile 1, wherein the lower half portion of the foundation single pile 1 is buried in bottom soil, the upper half portion of the foundation single pile 1 is soaked in water, a protective net 2 is sleeved on the outer side of the upper half portion of the foundation single pile 1, a fixing device 3 is installed at the bottom of the protective net 2, the fixing device 3 is sleeved on the outer side of the foundation single pile 1, a soil fixing device 4 is sleeved on the outer side of the lower half portion of the foundation single pile 1, the top of the soil fixing device 4 is connected with the fixing device 3, and a connecting device 5 is installed inside the soil fixing device 4.

Fixing device 3 includes retainer plate 301, and the outside at basic single pile 1 is established to retainer plate 301 cover, and six connecting rods 302 are welded to the outside of retainer plate 301, and the inside welding of connecting rod 302 has go-between 303, and go-between 303 is provided with a plurality ofly, and the centre of a circle of a plurality of go-between 303 is located the same point.

Protection network 2 includes four poles 201 No. one, pole 201 welds the top at connecting ring 303, the top welding of connecting ring 303 has eight poles 202 No. two, and No. two poles 202 are located the outside of pole 201, the top welding of connecting ring 303 has eight poles 203 No. three, and No. three pole 203 is located the outside of No. two poles 202, the top welding of connecting ring 303 has four poles 204 No. four, and No. four pole 204 is located the outside of No. three pole 203, the outside welding of No. one pole 201 has a plurality of rings 205 No. one, the outside welding of No. two poles 202 has a plurality of rings 206 No. two, and No. two rings 206 are located the below of No. one ring 205, the outside welding of No. three pole 203 has a plurality of rings 207, and No. three ring 207 is located the below of No. two rings 206, the outside welding of No. four pole 204 has a plurality of rings 208 No. four, and No. four ring 208 is located the below of No. three rings 207.

The invention utilizes a protective net 2 to buffer and guide ocean currents around a foundation single pile 1, and specifically comprises the following steps: the inner layer of the protective net 2 is fixed by metal, the outer layer is coated with resin materials to prevent seawater corrosion, the protective net 2 comprises four first rods 201, the first rods 201 are welded on the top of a connecting ring 303, eight second rods 202 are welded on the top of the connecting ring 303, the second rods 202 are positioned on the outer side of the first rods 201, eight third rods 203 are welded on the top of the connecting ring 303, the third rods 203 are positioned on the outer side of the second rods 202, four fourth rods 204 are welded on the top of the connecting ring 303, the fourth rods 204 are positioned on the outer side of the third rods 203, a first rod 201, two second rods 202, two third rods 203 and a fourth rod 204 form a group of guide groups, the four guide groups are totally, the overlooking connection line shape of the guide groups is arc-shaped, a certain guiding effect can be realized on the basic single pile 1 when seawater scours the basic single pile 1 from the front side, seawater deviates outwards from the position of the fourth rods 204, and therefore the impact force of the seawater on the basic single pile 1, the purpose of protecting the foundation mono-pile 1 is achieved, a plurality of first rings 205 are welded on the outer side of a first rod 201, a plurality of second rings 206 are welded on the outer side of a second rod 202, the second rings 206 are located below the first rings 205, a plurality of third rings 207 are welded on the outer side of a third rod 203, the third rings 207 are located below the second rings 206, a plurality of fourth rings 208 are welded on the outer side of a fourth rod 204, the fourth rings 208 are located below the third rings 207, a group of buffer groups are formed by the first rings 205, the second rings 206, the third rings 207 and the fourth rings 208 respectively, a plurality of buffer groups are arranged, a protective net 2 formed by the buffer groups can buffer seawater and the foundation mono-pile 1, the damage to the foundation mono-pile 1 caused by the over-fast scouring of the seawater flow velocity is prevented, the heights of the rings on the buffer groups are gradually increased from outside to inside, and a certain upward guiding effect can be achieved while buffering, the phenomenon that the stability of the single pile is reduced due to the fact that bottom soil on the outer side of the single pile is taken away by seawater flowing downwards is prevented.

Example 2:

referring to fig. 4-7, the foundation of embodiment 1 is different in that the soil fixing device 4 includes a plurality of soil fixing modules 401, the soil fixing modules 401 are provided with a plurality of flushing holes 402, the soil fixing modules 401 are provided with a plurality of fixing grooves 403 in the outer side thereof, the fixing grooves 403 are provided in the inner side of the fixing grooves 403, the moving grooves 407 are filled with elastic rubber 408, the outer side of the elastic rubber 408 is connected with fixing balls 404, the top of the fixing grooves 403 is provided with threaded holes 405, and the bottom of the soil fixing modules 401 is provided with tips 406.

Connecting device 5 includes connecting plate 501, connecting plate 501 is inserted and is established the inside of fixed slot 403, the top welding of connecting plate 501 has fixed block 502, and fixed block 502 and screw hole 405 threaded connection, the edge outside of connecting plate 501 is equipped with fixed orifices 503, and fixed orifices 503 and fixed ball 404 gomphosis, the bottom of connecting plate 501 is equipped with cutter 504, connecting device 5 still includes fixed plate 505, the top of fixed plate 505 and the bottom threaded connection of retainer plate 301, the bottom welding of fixed plate 505 is at the top of connecting plate 501.

The invention utilizes the soil fixing device 4 to fix the bottom soil outside the bottom of the foundation single pile 1, prevents the sea bottom from being waved and flushed to form a pit around the foundation single pile 1, and influences the stability of the foundation single pile, the soil fixing device 4 is composed of a plurality of soil fixing modules 401, the soil fixing modules 401 are externally applied with a hexagonal design, the stability is strong and the assembly is easy, the inside of the soil fixing modules 401 is provided with flushing holes 402, the flushing holes 402 can surround the bottom soil for protection, and prevent the sea current from flushing to take away the bottom soil, the outside of the soil fixing modules 401 is welded with a plurality of fixing grooves 403, the fixing grooves 403 are used for connecting the two soil fixing modules 401, the inside of the moving grooves 407 is filled with elastic rubber 408, the outside of the elastic rubber 408 is connected with a fixing ball 404, the top of the fixing grooves 403 is provided with a threaded hole 405, the connecting plate 501 is inserted in the inside of the fixing grooves 403, the fixing block 502 is in threaded connection with the threaded hole 405, the fixing hole 503 is formed in the outer side of the edge of the connecting plate 501, the fixing hole 503 is embedded with the fixing ball 404, when the fixing device is used, the soil fixing module 401 is inserted into soil, the pointed end 406 of the bottom of the fixing device facilitates the insertion of the soil fixing module 401, then the connecting plate 501 is inserted into the fixing groove 403, in the downward insertion process, the fixing ball 404 is continuously contracted under the extrusion action of the connecting plate 501 until the connecting plate 501 is inserted into the bottom, the fixing ball 404 and the fixing hole 503 are located at the same position, the radius of the fixing ball 404 is the same as that of the circular fixing hole 503, the fixing ball 404 is embedded with the fixing hole 503 to realize fixation, then the fixing block 502 is connected with the threaded hole 405 by using bolts, namely, the connection between the two soil fixing modules 401 is completed, three connecting plates 501 at the connection of the three soil fixing modules 401 can form a regular, connecting device 5 still includes fixed plate 505, the top of fixed plate 505 and retainer plate 301's bottom threaded connection, and the bottom welding of fixed plate 505 is at the top of connecting plate 501, can link together soil fixing device 4 and protection network 2 like this, guarantees the stability of protection network, adopts the mode of concatenation to be convenient for transport and installation, and soil fixing effect is good.

Example 3:

please refer to fig. 8, the difference between the

embodiments

1 and 2 is that the soil fixing device 4 further includes an auxiliary device 6, the auxiliary device 6 includes an auxiliary module 601, an auxiliary hole 602 is formed in the auxiliary module 601, the soil fixing module 401 is inserted into the auxiliary hole 602, the auxiliary module 601 is hexagonal, the clamping members 603 are welded on the outer sides of three sides of the auxiliary module 601, the clamping grooves 605 are formed on the outer sides of the other three sides, the clamping members 603 and the clamping grooves 605 are both provided with insertion holes 604, and the insertion pins 606 are inserted into the insertion holes 604.

The invention utilizes an auxiliary device 6 to assist the installation of a soil fixing module 401, and specifically comprises the following steps: the auxiliary device 6 comprises an auxiliary module 601, an auxiliary hole 602 is formed in the auxiliary module 601, the auxiliary hole 602 is hexagonal, the soil fixing module 401 can be just inserted into the auxiliary hole 602, the position of the auxiliary module 601 is limited, the auxiliary module 601 is hexagonal, the clamping pieces 603 are welded on the outer sides of three sides of the auxiliary module 601, the outer sides of the other three sides are provided with a clamping groove 605, the insides of the clamping piece 603 and the clamping groove 605 are both provided with inserting holes 604, the insides of the inserting holes 604 are inserted with bolts 606, when the device is installed, a plurality of auxiliary modules 601 are spliced around the foundation mono-pile 1, the plug-in 603 is inserted into the inner part of the jack 604, then, the plug 606 is inserted into the jack 604 to complete fixing, then the soil fixing module 401 is inserted into the bottom soil along the auxiliary hole 602, the auxiliary device 6 is taken away after the soil fixing module 401 is installed, and the connecting device 5 is installed, so that the soil fixing module 401 can be installed at a specified position quickly and accurately by using the auxiliary device 6.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a take underwater pile foundation in scour protection hole to erode protector, includes basic single pile (1), its characterized in that: the lower half of basis single pile (1) buries in the bottom soil, the first half of basis single pile (1) is soaked in water, the first half outside cover of basis single pile (1) is equipped with protection network (2), fixing device (3) are installed to the bottom of protection network (2), just fixing device (3) cover is established in the outside of basis single pile (1), the lower half outside cover of basis single pile (1) is equipped with admittedly native device (4), just the top and fixing device (3) of admittedly native device (4) are connected, the internally mounted of admittedly native device (4) has connecting device (5).

2. The underwater pile foundation scour protection device with the scour prevention hole, according to claim 1, is characterized in that: fixing device (3) include retainer plate (301), the outside at basic single pile (1) is established to retainer plate (301) cover, the outside welding of retainer plate (301) has six connecting rods (302), the inside welding of connecting rod (302) has go-between (303), go-between (303) are provided with a plurality ofly, and a plurality of the centre of a circle of go-between (303) is located the same point.

3. The underwater pile foundation scour protection device with the scour prevention hole, according to claim 2, is characterized in that: the protective net (2) comprises four first rods (201), the first rods (201) are welded at the top of a connecting ring (303), eight second rods (202) are welded at the top of the connecting ring (303), the second rods (202) are located on the outer side of the first rods (201), eight third rods (203) are welded at the top of the connecting ring (303), the third rods (203) are located on the outer side of the second rods (202), four fourth rods (204) are welded at the top of the connecting ring (303), the fourth rods (204) are located on the outer side of the third rods (203), a plurality of first rings (205) are welded on the outer side of the first rods (201), a plurality of second rings (206) are welded on the outer side of the second rods (202), the second rings (206) are located below the first rings (205), and a plurality of third rings (207) are welded on the outer side of the third rods (203), and the third ring (207) is positioned below the second ring (206), a plurality of fourth rings (208) are welded on the outer side of the fourth rod (204), and the fourth rings (208) are positioned below the third ring (207).

4. The underwater pile foundation scour protection device with the scour prevention hole, according to claim 1, is characterized in that: the soil fixing device (4) comprises a soil fixing module (401), the soil fixing module (401) is provided with a plurality of soil fixing modules, a scouring hole (402) is formed in the soil fixing module (401), a plurality of fixing grooves (403) are welded on the outer side of the soil fixing module (401), a moving groove (407) is formed in the inner side of each fixing groove (403), elastic rubber (408) is filled in the moving groove (407), a fixing ball (404) is connected to the outer side of the elastic rubber (408), a threaded hole (405) is formed in the top of each fixing groove (403), and a tip (406) is arranged at the bottom of the soil fixing module (401).

5. The underwater pile foundation scour protection device with the scour prevention hole, according to claim 4, is characterized in that: connecting device (5) are including connecting plate (501), connecting plate (501) are inserted and are established the inside of fixed slot (403), the top welding of connecting plate (501) has fixed block (502), just fixed block (502) and screw hole (405) threaded connection, the edge outside of connecting plate (501) is equipped with fixed orifices (503), just fixed orifices (503) and fixed ball (404) gomphosis, the bottom of connecting plate (501) is equipped with cutter (504), connecting device (5) still include fixed plate (505), the top of fixed plate (505) and the bottom threaded connection of retainer plate (301), the bottom welding of fixed plate (505) is at the top of connecting plate (501).

6. The underwater pile foundation scour protection device with the scour prevention hole, according to claim 1, is characterized in that: the soil fixing device (4) further comprises an auxiliary device (6), the auxiliary device (6) comprises an auxiliary module (601), an auxiliary hole (602) is formed in the auxiliary module (601), a soil fixing module (401) is inserted into the auxiliary hole (602), the auxiliary module (601) is hexagonal, clamping pieces (603) are welded on the outer sides of three sides of the auxiliary module (601), clamping grooves (605) are formed in the outer sides of the other three sides of the auxiliary module, inserting holes (604) are formed in the clamping pieces (603) and the clamping grooves (605), and inserting pins (606) are inserted into the inserting holes (604).