Seawall slope permanent self-propelled anchor rod suitable for seawater environment

Abstract

The invention belongs to the technical field of seawater environment anchor rods, and provides a seawall slope permanent self-propelled anchor rod suitable for a seawater environment. A seawall slope permanent self-propelled anchor rod suitable for a seawater environment comprises an anchor rod body and an anchor rod drill bit at one end of the anchor rod body, the anchor rod body comprises a hollow rod body and an isolation frame structure, the isolation frame structure comprises a first isolation frame, the hollow rod body is located in the center of the anchor rod body, and the hollow rod body is sleeved with a corrugated pipe structure; a first isolation frame is arranged between the corrugated pipe structure and the hollow rod body. Through the arrangement, seawater is isolated from being in contact with the hollow rod body, the corrosion resistance of the self-propelled anchor rod is improved, enough anchoring friction force is provided, and displacement of the anchor rod in the anchor rod hole is avoided; the first isolation frame in the isolation frame structure is used for separating the hollow rod body and the corrugated pipe structure, the effects of supporting and centering the hollow rod body and the corrugated pipe structure are achieved, it is guaranteed that the hollow rod body and the corrugated pipe structure are concentric, and the overall mechanical property is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rods in seawater environments, and in particular relates to a permanent self-advancing anchor rod for seawall slopes suitable for seawater environments. Background Art

[0002] Self-propelled anchor is a special type of anchor that combines multiple steps such as drilling, anchor installation and grouting anchoring to achieve integrated anchoring operations. This type of anchor is usually used in complex formations, such as broken rock formations, loose soil formations, and formations that require casing wall drilling, and can provide reliable anchoring effects.

[0003] Self-propelled anchors are usually composed of a hollow rod body, a drill bit, etc. However, due to their direct contact with the rock and soil, when the strata are corrosive, due to the unreliability of on-site grouting or cracks under the action of working loads, the rod body directly contacts corrosive groundwater and other substances, causing corrosion; therefore, they can often only be used for temporary support or permanent support below the weakly corrosive strata. With the development of anchoring technology, the reliability and durability requirements of anchors are getting higher and higher, and the durability of highly corrosive strata in marine environments is also required to be guaranteed.

[0004] The Japanese invention patent with publication number JP6853671B2 discloses a method for constructing an anchor, which uses a drilling rig and has simple operation procedures. It includes attaching an outer drill bit to an inner drill bit inserted into a housing, pushing a casing into the borehole of the casing, forming the borehole of the casing by the inner drill bit and the outer drill bit at the same time, and forming the borehole of the tension resistor by the top drill bit, disconnecting the top drill bit and the inner drill bit from the outer drill bit and pulling them out of the housing, filling mortar into the borehole of the tension resistor, allowing the front end of the tension resistor to penetrate into the mortar, and pushing the stopper configured in the tension resistor onto the casing shoe. The invention reduces the number of parts of the equipment due to the absence of a coupling. However, in the prior art, the corrosion resistance of the anchor rod in a marine environment needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a permanent self-propelled anchor rod for seawall slopes which has high anti-interference capability and stable mechanical properties and is suitable for seawater environments.

[0006] A permanent self-advancing anchor rod for seawall slopes suitable for seawater environment comprises an anchor rod body and an anchor drill bit at one end of the anchor rod body, the anchor rod body comprises a hollow rod body and an isolation frame structure, the isolation frame structure comprises a first isolation frame, the hollow rod body is located at the center of the anchor rod body, a corrugated tube structure is provided on the outer cover of the hollow rod body, and a first isolation frame is provided between the corrugated tube structure and the hollow rod body. The corrugated tube structure is used to surround the hollow rod body to isolate the contact between the seawater and the hollow rod body, thereby improving the corrosion resistance of the self-advancing anchor rod. At the same time, the corrugated texture on the surface of the corrugated tube structure can provide sufficient anchoring friction to prevent the anchor rod from being displaced in the anchor rod hole; the first isolation frame in the isolation frame structure is used to separate the hollow rod body and the corrugated tube structure, thereby playing a role in supporting and centering the hollow rod body and the corrugated tube structure, thereby ensuring the concentricity of the hollow rod body and the corrugated tube structure, and ensuring the overall mechanical properties.

[0007] Preferably, the permanent self-advancing anchor rod for the seawall slope suitable for seawater environment includes an anchor rod hole, a bellows structure includes at least two bellows nested in each other, and an isolation frame structure also includes a second isolation frame, and a second isolation frame is provided between the anchor rod hole and the bellows structure. The bellows structure is separated from the anchor rod hole by the second isolation frame, the bellows and the anchor rod hole are kept concentric, the uniformity of the bellows structure as an anti-corrosion and protective structure is ensured, and the overall anti-corrosion protection effect and the mechanical properties of the anchor rod are improved; the second isolation frame is conducive to uniformly filling the adhesive between the bellows and the anchor rod hole, and the external force needs to destroy the mixed structure of the adhesive and the second isolation frame to destroy the relatively fragile bellows, and the bellows can prevent seawater from penetrating the adhesive and directly corroding the hollow rod body, thereby improving the anti-corrosion protection effect; when the isolation frame is made of steel bars and the adhesive is made of concrete material, the isolation frame and the adhesive form a steel-concrete structure, which improves the structural strength of the bellows structure and the isolation frame structure.

[0008] Preferably, the first isolation frame and the second isolation frame are annular frames, and the annular frames are radially provided with at least two supporting teeth with the same tooth shape. The annular frames and the supporting teeth with the same tooth shape are used to keep the separated objects on the inner and outer sides of the isolation frame aligned, and to keep the thickness of the filler in the middle of the separated objects uniform. Since the anti-corrosion effect of the anti-corrosion structure has a barrel effect, the above structure can improve the anti-corrosion protection effect; the isolation frame is radially provided with supporting teeth to fix the space where the isolation frame is located, which is conducive to the solidification of the adhesive poured in the space where the isolation frame is located. At the same time, after the space where the isolation frame is located is filled with the adhesive, there are supporting ribs inside, which can improve the overall mechanical properties of the anchor rod.

[0009] Preferably, the tooth tops of the supporting teeth of the first isolation frame match with the inner side of the bellows structure, and the tooth roots of the supporting teeth of the first isolation frame match with the outer side of the hollow rod body.

[0010] Preferably, the tooth tops of the supporting teeth of the second isolation frame match with the anchor rod holes, and the tooth roots of the supporting teeth of the second isolation frame match with the outer side of the bellows structure.

[0011] Preferably, an adhesive is filled between the hollow rod body and the bellows structure, and the adhesive fixes the first isolation frame, the hollow rod body and the bellows structure. The adhesive fills the space between the hollow rod body and the bellows structure where the first isolation frame is located to form an anti-corrosion structure, isolating seawater from the hollow rod body, and preventing seawater from directly contacting the hollow rod body after the bellows structure is broken; the adhesive and the first isolation frame improve the tensile, compressive and torsional mechanical properties of the permanent self-propelled anchor rod, and improve the structural strength of the anchor rod rod body.

[0012] Preferably, the inter-nested bellows are filled with adhesive, and the anchor hole and the bellows structure are also filled with adhesive, and the adhesive fixes the second isolation frame and the bellows structure. The adhesive fills the gaps between the bellows to form a second layer of anti-corrosion structure, which improves the anti-corrosion effect of the permanent self-propelled anchor. At the same time, the thickness of the bellows structure is ensured to avoid displacement of the anchor structure during grouting and fixing after the anchor enters the anchor hole, and the grouting of the stratum where the anchor hole is located penetrates to form pores, resulting in uneven anti-corrosion protection structure.

[0013] Preferably, an anchor support structure is provided at the other end of the anchor rod body, and the anchor support structure includes a concrete base and a pressure plate surrounding the anchor rod body, the pressure plate is located on the side of the concrete base away from the anchor drill bit, and the pressure plate is fixed to the concrete base by fasteners, and the fasteners include hemispherical washers, and the spherical surface of the hemispherical washers is close to the pressure plate. Since the fixed state of the permanent self-propelled anchor is not completely a vertical anchor, there are anchors that need to have an inclination. In order to cope with the inclination angle of the axis of the anchor hole, different concrete bases and hemispherical washers need to be set, so that the anchor is more stably in a reasonable position when inserted into the anchor hole, avoiding the tilt of the anchor structure during the grouting and fixing process after the anchor enters the anchor hole, resulting in uneven anti-corrosion protection structure, and the fastener can also transmit the compression force through the shape of the hemispherical washer to compress and fix the anchor; the pressure plate is used to fit the shape of the hemispherical washer to avoid damaging the surface of the concrete base during the fastener compression process, and the compression force of the fastener is transmitted to fix the anchor and the concrete base.

[0014] Preferably, the anchor support structure further comprises an anchor cover, the edge of which is connected to the pressure plate, the anchor cover covers the anchor rod body and fasteners, and the anchor cover is filled with rust inhibitor. The anchor cover is used to seal the anchor rod body and fasteners of the permanent self-propelled anchor exposed above the ground, and the rust inhibitor is filled to prevent external corrosive substances from invading from above and corroding downward along the anchor rod body, and the rust inhibitor fills the gap between the anchor rod body and the fastener, thereby increasing the friction of the fastener withdrawal, preventing the fastener from loosening, achieving integrity sealing of the anchor rod body, and preventing the anchor rod from shifting.

[0015] Preferably, a grouting pipe is provided at the other end of the anchor rod body, and the grouting pipe is located outside the bellows structure. The gap between the bellows structure and the hollow rod body of the anchor rod, and the gap inside the bellows structure can be filled with adhesive using prefabricated grouting, but on-site grouting is required between the anchor rod body and the anchor rod hole. The grouting pipe can observe the grouting condition between the anchor rod body and the anchor rod hole, and ensure that the grouting adhesive fills the gap between the anchor rod body and the anchor rod hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects: by arranging multiple protections for the permanent self-advancing anchor rod, the corrosion of the hollow rod body in the highly corrosive strata in the marine environment is slowed down or even avoided, and the service life of the permanent self-advancing anchor rod is extended; the anchor rod is ensured to be located at a reasonable position in the anchor rod hole, the uniformity of the anti-corrosion structure is ensured, and the anti-corrosion protection effect and the overall mechanical properties are improved; the orifice of the anchor rod hole is ensured to be fixed and stable, and the invasion of external corrosive substances is avoided. For anchor rods with different inclinations, the construction quality of the anchor rod is ensured and improved, and the present invention has the following beneficial effects: the hollow rod body is surrounded by a bellows structure to isolate the contact between seawater and the hollow rod body, and the corrosion resistance of the self-advancing anchor rod is improved. At the same time, the corrugated texture on the surface of the bellows structure can provide sufficient anchoring friction to avoid displacement of the anchor rod in the anchor rod hole; the first isolation frame in the isolation frame structure is used to separate the hollow rod body and the bellows structure, which plays a role in supporting and centering the hollow rod body and the bellows structure, ensuring the concentricity of the hollow rod body and the bellows structure, and ensuring the overall mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a permanent self-propelled anchor rod for a seawall slope suitable for a seawater environment according to the present invention; Figure 2 It is a structural schematic diagram of the anchor rod supporting structure of the present invention; Figure 3 It is a structural schematic diagram of the anchor rod body of the present invention; Figure 4 It is a structural schematic diagram of the anchor drill bit of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the anchor rod body of the present invention; Figure 6 It is a front view structural schematic diagram of the anchor drill bit of the present invention.

[0019] Figure numbers: anchor drill bit 1; sealing ring 11; drill tip 12; drill bit 13; drill hole 14; anchor rod body 2; hollow rod body 21; first isolation frame 22; inner layer bellows 23; outer layer bellows 24; second isolation frame 25; adhesive 26; anchor hole 27; anchor support structure 3; concrete base 31; pressure plate 32; hemispherical washer 33; nut 34; rust inhibitor 35; stuffing port 36; anchor cover 37; slurry return pipe 4; guide pipe 5. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below in conjunction with specific implementations and drawings: Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: See attached Figure 1 -Attached Figure 2 A permanent self-propelled anchor for seawall slope suitable for seawater environment, comprising an anchor rod body 2 and an anchor drill bit 1 at one end of the anchor rod body 2, an anchor rod support structure 3 is provided at the other end of the anchor rod body 2, the anchor rod support structure 3 comprises a concrete base 31 and a pressure plate 32 surrounding the anchor rod body 2, the pressure plate 32 is located on the side of the concrete base 31 away from the anchor drill bit 1, the pressure plate 32 is pressed and fixed with the concrete base 31 by fasteners, the fasteners comprise a hemispherical washer 33, and the spherical surface of the hemispherical washer 33 is in close contact with the pressure plate 32.

[0022] Since the fixed state of the permanent self-propelled anchor is not completely vertical, there are anchors that need to have an inclination. In order to cope with the inclination angle of the axis of the anchor hole 27, different concrete bases 31 and hemispherical washers 33 need to be set, so that the anchor is more stably in a reasonable position when inserted into the anchor hole 27, and the fastener can also transmit the clamping force through the shape of the hemispherical washer 33 to clamp and fix the anchor; the pressure plate 32 is used to match the shape of the hemispherical washer 33 to avoid damaging the surface of the concrete base 31 during the fastener clamping process, and the clamping force of the fastener is transmitted to fix the anchor and the concrete base 31. In this embodiment, the fastener is a nut 34, and all metal components in the anchor support structure 3 and the anchor rod body 2, such as the nut 34, the pressure plate 32, and the hemispherical washer 33, are coated with epoxy coating in the factory.

[0023] The anchor support structure 3 also includes an anchor cover 37, the edge of which is connected to the pressure plate 32, the anchor cover 37 covers the anchor rod body 2 and the fasteners, and the anchor cover 37 is filled with a rust inhibitor 35. The inside of the anchor cover 37 and the part of the hole without cement slurry are filled with the rust inhibitor 35 through the filling port 36. The anchor cover 37 is used to seal the anchor rod body 2 and the fasteners exposed above the ground of the permanent self-propelled anchor, and the rust inhibitor 35 is filled to prevent external corrosive substances from invading from above and corroding downward along the anchor rod body 2, and the rust inhibitor 35 fills the gap between the anchor rod body 2 and the fasteners to prevent the fasteners from loosening, so as to achieve the integrity of the anchor rod body 2 and prevent the displacement of the anchor rod.

[0024] The other end of the anchor rod body 2 is provided with a return grout pipe 4, which is located outside the bellows structure. The pressure plate 32 and the hemispherical gasket 33 are provided with openings for the grouting pipe or the return grout pipe 4 to pass through, and the orifice section is also provided with a guide pipe 5 to provide a guide for the self-propelled anchor rod.

[0025] The pores between the bellows structure and the hollow rod body 21 of the anchor rod, and the pores inside the bellows structure can be filled with the adhesive 26 using prefabricated grouting, but the anchor rod body 2 and the anchor rod hole 27 need to be grouted on site. The grouting pipe 4 can observe the grouting situation between the anchor rod body 2 and the anchor rod hole 27 to ensure that the grouting adhesive 26 fills the gap between the anchor rod body 2 and the anchor rod hole 27. The anchor rod body 2 includes a hollow rod body 21 and an isolation frame structure, and the isolation frame structure includes a first isolation frame 22. The hollow rod body 21 is located at the center of the anchor rod body 2, and the hollow rod body 21 is covered with a bellows structure. The first isolation frame 22 is provided between the bellows structure and the hollow rod body 21. A bellows structure is used to surround the hollow rod body 21 to isolate the contact between seawater and the hollow rod body 21, thereby improving the corrosion resistance of the self-propelled anchor. At the same time, the corrugated texture on the surface of the bellows structure can provide sufficient anchoring friction to prevent the anchor from shifting in the anchor hole 27. A first isolation frame 22 in the isolation frame structure is used to separate the hollow rod body 21 and the bellows structure, which plays a role in supporting and centering the hollow rod body 21 and the bellows structure, ensuring that the hollow rod body 21 and the bellows structure are concentric, thereby ensuring the overall mechanical properties.

[0026] See attached Figure 3 The permanent self-propelled anchor rod for seawall slope suitable for seawater environment includes an anchor rod hole 27, a bellows structure includes at least two mutually nested bellows, and an isolation frame structure also includes a second isolation frame 25, and a second isolation frame 25 is arranged between the anchor rod hole 27 and the bellows structure.

[0027] The bellows structure adopts a second isolation frame 25 to separate from the anchor hole 27, so as to keep the bellows and the anchor hole 27 concentric, ensure the uniformity of the bellows structure as an anti-corrosion and protective structure, and improve the overall anti-corrosion protection effect and the mechanical properties of the anchor; the second isolation frame 25 is conducive to uniformly filling the adhesive 26 between the bellows and the anchor hole 27. The external force needs to destroy the mixed structure of the adhesive 26 and the second isolation frame 25 to destroy the relatively fragile bellows. The bellows can prevent seawater from penetrating the adhesive 26 and directly corroding the hollow rod body 21, thereby improving the anti-corrosion protection effect; when the isolation frame is made of steel bars and the adhesive 26 is made of concrete, the isolation frame and the adhesive 26 form a steel-concrete structure, thereby improving the structural strength of the bellows structure and the isolation frame structure.

[0028] See attached Figure 3 With attached Figure 5 The first isolation frame 22 and the second isolation frame 25 are annular frames, and the annular frames are radially provided with at least two supporting teeth with the same tooth shape. The tooth tops of the supporting teeth of the first isolation frame 22 match the inner side of the inner layer corrugated tube 23, and the tooth roots of the supporting teeth of the first isolation frame 22 match the outer side of the hollow rod body 21. The tooth tops of the supporting teeth of the second isolation frame 25 match the anchor rod holes 27, and the tooth roots of the supporting teeth of the second isolation frame 25 match the outer side of the outer layer corrugated tube 24.

[0029] Through the above-mentioned arrangement, an annular bracket and supporting teeth with the same tooth shape are used to keep the separated objects on the inner and outer sides of the isolation frame aligned, and keep the thickness of the filler in the middle of the separated objects uniform. Since the anti-corrosion effect of the anti-corrosion structure has a barrel effect, the above-mentioned structure can improve the anti-corrosion protection effect; the isolation frame is radially provided with supporting teeth to fix the space where the isolation frame is located, which is beneficial to the solidification of the adhesive 26 poured in the space where the isolation frame is located. At the same time, after the space where the isolation frame is located is filled with the adhesive 26, there are supporting ribs inside, which can improve the overall mechanical properties of the anchor rod.

[0030] The hollow rod body 21 and the bellows structure are filled with adhesive 26, which fixes the first isolation frame 22, the hollow rod body 21 and the bellows structure. The adhesive 26 fills the space between the hollow rod body 21 where the first isolation frame 22 is located and the inner layer bellows 23 to form a layer of anti-corrosion structure, isolating the seawater from the hollow rod body 21, and preventing the seawater from directly contacting the hollow rod body 21 after the bellows structure is broken; the adhesive 26 and the first isolation frame 22 improve the tensile, compressive and torsional mechanical properties of the permanent self-propelled anchor rod, and improve the structural strength of the anchor rod rod body 2.

[0031] The inter-nested bellows are filled with adhesive 26, and the anchor hole 27 and the bellows structure are also filled with adhesive 26. The adhesive 26 fixes the second isolation frame 25 and the bellows structure. The adhesive 26 fills the gap between the inner layer bellows 23 and the outer layer bellows 24 to form a second layer of anti-corrosion structure, which improves the anti-corrosion effect of the permanent self-propelled anchor. At the same time, the thickness of the bellows structure is ensured to avoid displacement of the anchor structure during grouting and fixing after the anchor enters the anchor hole 27. The grouting of the stratum where the anchor hole 27 is located penetrates to form pores, resulting in uneven anti-corrosion protection structure.

[0032] Combination Figure 4 and Figure 6 As shown, the anchor drill bit 1 consists of a hollow cylindrical drill body, a drill bit 13, a drill bit tip 12 and a drill hole 14. The drill bit drills into the formation by rotating. A sealing ring 11 is provided between the anchor drill bit 1 and the anchor rod body 2.

[0033] Embodiment 2 On the basis of the first embodiment of the present invention, the difference from the first embodiment is that the first isolation frame 22 is made of a metal material that is relatively active relative to the second isolation frame 25, and the second isolation frame 25 is made of a metal material that is relatively active relative to the hollow rod body 21. If the inner layer bellows 23 and the outer layer bellows 24 are both damaged, seawater penetrates into the hollow rod body through the adhesive 26. Since the material of the first isolation frame 22 is highly active and the seawater is conductive, the first isolation frame 22, the second isolation frame 25 and the hollow rod body 21 produce a primary battery reaction, sacrificing the first isolation frame 22 and the second isolation frame to be corroded instead of the hollow rod body 21, thereby extending the service life of the anchor rod.

[0034] The implementation steps of the present invention are as follows: drilling into the ground on site with the anchor drill bit 1, grouting the grouting hole with the hollow rod body 21, and tightening the nut 34 to lock the anchor after the grouting slurry reaches a specified strength. Finally, the anchor is sealed with the anchor cover 37 and the anti-corrosion filler.

[0035] The grouting and return in the description and drawings of the present invention correspond to the situation when the anchor hole 27 is a downward hole. The grouting and return functions for the upward hole are swapped accordingly, that is, the hollow rod body 21 that serves as the grouting pipeline when the downward hole is used as the grouting return pipe 4 of the upward hole, and the grouting return pipe 4 of the downward hole serves as the grouting pipeline of the upward hole.

[0036] The present invention provides a permanent self-advancing anchor rod for seawall slopes suitable for seawater environments. Multiple protections are set for the permanent self-advancing anchor rod, which can slow down or even avoid the corrosion of the hollow rod body 21 in the highly corrosive strata in the marine environment, and prolong the service life of the permanent self-advancing anchor rod; ensure that the anchor rod can be located at a reasonable position in the anchor rod hole 27, ensure the uniformity of the anti-corrosion structure, improve the anti-corrosion protection effect and the overall mechanical properties; ensure that the orifice of the anchor rod hole 27 is fixed and stable, avoid the invasion of external corrosive substances, correspond to anchor rods with different inclinations, ensure and improve the construction of the anchor rod The construction quality is improved, and it has the following beneficial effects: the hollow rod body 21 is surrounded by a bellows structure to isolate the contact between seawater and the hollow rod body 21, thereby improving the corrosion resistance of the self-propelled anchor rod; at the same time, the corrugated texture on the surface of the bellows structure can provide sufficient anchoring friction to prevent the anchor rod from being displaced in the anchor rod hole 27; the first isolation frame 22 in the isolation frame structure is used to separate the hollow rod body 21 and the bellows structure, which plays a role in supporting and centering the hollow rod body 21 and the bellows structure, thereby ensuring that the hollow rod body 21 and the bellows structure are concentric, thereby ensuring the overall mechanical properties.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A permanent self-propelled anchor rod for seawall slopes suitable for seawater environments, comprising an anchor rod body (2) and an anchor rod drill bit (1) at one end of the anchor rod body (2), wherein: The anchor rod body (2) comprises a hollow rod body (21) and an isolation frame structure, the isolation frame structure comprises a first isolation frame (22), the hollow rod body (21) is located at the center of the anchor rod body (2), the hollow rod body (21) is covered with a bellows structure, and the first isolation frame (22) is provided between the bellows structure and the hollow rod body (21).

2. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 1 is characterized in that: The seawall slope permanent self-advancing anchor suitable for seawater environment comprises an anchor hole (27), the bellows structure comprises at least two bellows nested in each other, the spacer structure further comprises a second spacer (25), and the second spacer (25) is provided between the anchor hole (27) and the bellows structure.

3. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 2 is characterized in that: The first isolation frame (22) and the second isolation frame (25) are annular frames, and the annular frames are radially provided with at least two supporting teeth with the same tooth shape.

4. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 3 is characterized in that: The tooth tops of the supporting teeth of the first isolation frame (22) match the inner side of the bellows structure, and the tooth roots of the supporting teeth of the first isolation frame (22) match the outer side of the hollow rod body (21).

5. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 3 is characterized in that: The tooth tops of the supporting teeth of the second spacer frame (25) match the anchor rod holes (27), and the tooth roots of the supporting teeth of the second spacer frame (25) match the outer side of the bellows structure.

6. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 2 is characterized in that: An adhesive (26) is filled between the hollow rod body (21) and the bellows structure, and the adhesive (26) fixes the first isolation frame (22), the hollow rod body (21) and the bellows structure.

7. A permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 6, characterized in that: The adhesive (26) is filled between the mutually nested corrugated tubes, and the anchor rod hole (27) and the corrugated tube structure are also filled with the adhesive (26). The adhesive (26) fixes the second isolation frame (25) and the corrugated tube structure.

8. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 1 is characterized in that: An anchor support structure (3) is provided at the other end of the anchor rod body (2), the anchor support structure (3) comprising a concrete base (31) surrounding the anchor rod body (2) and a pressure plate (32), the pressure plate (32) being located on a side of the concrete base (31) away from the anchor drill bit (1), the pressure plate (32) being pressed and fixed to the concrete base (31) by a fastener, the fastener comprising a hemispherical washer (33), the spherical surface of the hemispherical washer (33) being in close contact with the pressure plate (32).

9. A permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 8, characterized in that: The anchor rod support structure (3) further comprises an anchor rod cover (7), the edge of which is connected to the pressure bearing plate (32), the anchor rod cover (7) enveloping the anchor rod body (2) and the fastener, and the anchor rod cover (7) is filled with a rust inhibitor (35).

10. The permanent self-propelled anchor rod for seawall slope suitable for seawater environment according to claim 1, characterized in that: The other end of the anchor rod body (2) is provided with a grout return pipe (4), and the grout return pipe (4) is located outside the corrugated pipe structure.

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