CN117403634A

CN117403634A - Anchor rod reinforcing structure for side slope and anchoring method

Info

Publication number: CN117403634A
Application number: CN202311334237.9A
Authority: CN
Inventors: 边美华; 张兴森; 李君华; 刘桂婵; 卢展强; 彭家宁; 陈恒; 覃宋林
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-01-16

Abstract

The invention relates to the technical field of electric power engineering structural design, in particular to an anchor rod reinforcing structure for a side slope and an anchoring method, comprising a reinforcing mechanism, a cutting assembly and a tray, wherein the reinforcing mechanism comprises an anchor rod, the cutting assembly is arranged on the anchor rod, and the tray is sleeved on the anchor rod; the cutting assembly comprises a drill bit and a spiral blade, the drill bit and the spiral blade are driven to drill holes and ream holes on a side slope through rotation of an anchor rod, stepped holes are formed, the anchor rod generates radial expansion characteristics and axial return-to-straight deformation through relative sliding of a cone body and a sleeve, and further large constant resistance is generated, the sleeve is enabled to have double functions of circumferential expansion and radial extension through a negative Poisson ratio structural effect, the requirement of large deformation can be met, the anchoring effect of the anchor rod can be greatly improved, the stability of a foundation of a power transmission tower is protected, and further various rock-soil body geological disasters of the side slope of the foundation of the power transmission tower are prevented and treated.

Description

Anchor rod reinforcing structure for side slope and anchoring method

Technical Field

The invention relates to the technical field of electric power engineering structure design, in particular to an anchor rod reinforcing structure for a side slope and an anchoring method.

Background

The protection of the foundation slope of the power transmission tower is important to ensure the safety and reliability of the power transmission system. Through years of development, china has built an ultra-long power transmission network which spans a large range, a transmission line inevitably needs to pass through a plurality of areas with complex geological topography, severe environmental conditions and changeable climates such as a mountain, a mountain canyon and the like along the way, the problems of disaster damage and environmental geotechnical engineering are easily caused on a pole tower foundation, and the high-voltage transmission line iron tower is damaged by local instability and overall collapse, so that the safe and stable operation of the power grid is seriously threatened.

At present, a slope support mode mainly adopts an anchor rod to be installed in a slope, a relatively soft soil layer in the slope is generally selected, and concrete is poured around the anchor rod to form an anchor body. One end of the anchor rod extends out of the surface of the side slope and is connected with the anchor head. Finally, longitudinal tension is applied to the anchor rod, so that the anchor rod anchoring body generates inward stress on the slope rock-soil body, and the sliding or collapse of the slope rock-soil body is prevented. However, this conventional anchor bolt support has some problems. The traditional anchor rod mainly provides insufficient drawing stress, so that the friction resistance between the anchor rod support body and the side slope rock-soil body drilling hole is limited. The anchor rod supporting wall has the advantages that the reinforcing and protecting effects of the anchor rod supporting wall on the side slope are limited, and the side slope is easy to slide.

For example, CN 110863851A discloses a constant-resistance large-deformation bamboo joint type anchor rod with alternate positive and negative poisson ratios, rod segments made of negative poisson ratio are arranged at intervals on a steel rod body, the rod segments made of the poisson ratio material are expanded and deformed after being stressed, the rod segments made of the positive poisson ratio material are contracted and deformed after being stressed, constant resistance and transverse expansion characteristics are generated, when the sliding force of an unstable slope body reaches a certain threshold value, strong impact force is released instantaneously, the steel rod body of the structure is difficult to resist the strong impact force released instantaneously, the anchoring efficacy is lost, so that geological disasters are caused, and the anchoring efficacy of the structure is not high.

Disclosure of Invention

The present invention has been made in view of the above or the problem that in the prior art, the steel rod body is difficult to withstand the strong impact force released instantaneously, and thus loses the anchoring efficacy, thereby causing geological disasters.

It is therefore an object of the present invention to provide a slope anchor bar reinforcement.

In order to solve the technical problems, the invention provides the following technical scheme: the device comprises a reinforcing mechanism, a cutting assembly and a tray, wherein the reinforcing mechanism comprises an anchor rod, the cutting assembly is arranged on the anchor rod, and the tray is sleeved on the anchor rod; the cutting assembly comprises a drill bit and a spiral blade, and drives the drill bit and the spiral blade to drill and ream holes on the slope through the rotation of the anchor rod, so that stepped holes are formed.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: the cutting assembly further comprises a cone connected with the anchor rod, a first piece connected with the cone, a second piece connected with the tray, a mounting block connected with the second piece, and a sleeve detachably connected with the mounting block; one side of the first piece, which is far away from the anchor rod, is connected with a drill bit; the spiral blade is arranged on the sleeve.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: the spiral blade adopts an elastic strip thin blade.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: grouting holes are formed in the anchor rods; the first piece is provided with a first slurry outlet; and a second slurry outlet hole is formed in the sleeve.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: the anchor rod is provided with a fastening nut, and the screwing direction of the fastening nut is opposite to the rotation direction of the anchor rod.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: the outer diameter of the helical blade is smaller than the outer diameter of the drill bit.

As a preferable scheme of the anchor rod reinforcing structure for the side slope, the invention comprises the following steps: the assembly and disassembly mechanism further comprises a plugboard, a limiting disc arranged on the plugboard, a mounting groove arranged on the plugboard, an extrusion assembly and a fixing assembly arranged inside the mounting groove, two limiting blocks corresponding to the extrusion assembly, and an unlocking assembly arranged on the fixing assembly.

The anchor rod reinforcing structure for the side slope has the beneficial effects that: the anchor rod generates radial expansion characteristic and axial back-straightening deformation through the relative sliding of the cone and the sleeve, so that great constant resistance is generated, the sleeve is enabled to have double functions of circumferential expansion and radial extension through the negative poisson ratio structural effect, the requirement of large deformation can be met, the anchoring effect of the anchor rod can be greatly improved, the stability of a power transmission tower foundation is protected, and various rock-soil body geological disasters of a side slope of the power transmission tower foundation are prevented and treated.

In view of the fact that in the actual use process, the steel rod body is difficult to withstand the strong impact force released instantly, the anchoring efficacy is lost, and therefore the problem of geological disasters is caused.

In order to solve the technical problems, the invention also provides the following technical scheme: the anchor rod anchoring method for the side slope comprises an anchor rod reinforcing structure for the side slope and comprises the following steps: inserting an anchor rod into a drill hole on the side slope; during the insertion, cutting the inner wall of the borehole with the cutting assembly to form a counterbore within the borehole; step two: positioning the cutting assembly furthest from the borehole and maintaining the middle portion of the helical blade curved outwardly; step three: and injecting concrete slurry into a gap between the drill hole and the anchor rod through the pressurizing device.

As a preferable scheme of the anchor rod anchoring method for the side slope, the invention comprises the following steps: the third step comprises: step a: sequentially installing a slurry stop plug, a gasket and a fastening nut; step b: concrete slurry is injected through the grouting channel.

As a preferable scheme of the anchor rod anchoring method for the side slope, the invention comprises the following steps: the fastening nut is tightly combined with the outer convex part of the tray through the anchor rod, so that pre-tension pulling is realized. When the tension force is too large, the convex part of the tray structure deforms inwards the surrounding rock to play a buffering role.

The anchor rod anchoring method for the side slope has the beneficial effects that: according to the invention, the fastening nut is tightly combined with the outer protruding part of the tray through the anchor rod, pre-tension pulling is realized, when tension force is overlarge, the outer protruding part of the tray structure deforms towards the inside of surrounding rock to play a buffering role, radial expansion characteristic and axial back-straightening deformation are generated through relative sliding of the cone and the sleeve, so that very large constant resistance is generated, the sleeve is enabled to have double functions of circumferential expansion and radial extension through the negative Poisson ratio structural effect, the requirement of large deformation can be met, the anchoring effect of the anchor rod can be greatly improved, the stability of a foundation of a power transmission tower is protected, and various rock-soil body geological disasters of a slope of the foundation of the power transmission tower are further prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without effort for a person of ordinary skill in the art.

Fig. 1 is an overall schematic view of a slope anchor reinforcement structure.

Fig. 2 is a schematic view of a cut-out structure of an overall elevation of a slope anchor reinforcement structure.

Fig. 3 is a schematic view of the whole right end part of the anchor rod reinforcing structure for the side slope.

Fig. 4 is an enlarged schematic view of the a-position of fig. 3 of the anchor bar reinforcing structure for a side slope.

Fig. 5 is a schematic diagram of a right-view section of a disassembly and assembly mechanism of the anchor rod reinforcing structure for the side slope.

Fig. 6 is a schematic diagram of a right view section of a disassembly and assembly mechanism of the anchor rod reinforcing structure for the side slope.

FIG. 7 is a schematic top view in section of a mechanism for assembling and disassembling an anchor reinforcement structure for a side slope.

FIG. 8 is an enlarged view of the anchor bar reinforcement structure for slopes at the position B in FIG. 7

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Embodiment 1 referring to fig. 1 to 4, a first embodiment of the present invention provides an anchor rod reinforcement structure for a side slope, which comprises a reinforcement mechanism 200 including an anchor rod 201, a cutting assembly 202 disposed on the anchor rod 201, and a tray 203 sleeved on the anchor rod 201, wherein the cutting assembly 202 includes a drill bit 202a and a helical blade 202b, and the drill bit 202a and the helical blade 202b are driven to drill and ream on the side slope by rotation of the anchor rod 201, so as to form a stepped hole.

The cutting assembly 202 may cut the inner wall of a borehole that is relatively soft in nature after weathering during insertion of the bolt 201 into the borehole, wherein the borehole may have been previously drilled using a drill rig, and the expanded section has a diameter that is greater than the diameter of the borehole.

Specifically, the cutting assembly 202 further includes a cone 202c coupled to the anchor rod 201, a first member 202d coupled to the cone 202c, a second member 202e coupled to the tray 203, a mounting block 202f coupled to the second member 202e, and a sleeve 202g detachably coupled to the mounting block 202 f; the side of the first piece 202d, which is far away from the anchor rod 201, is connected with the drill bit 202a, the spiral blade 202b is arranged on the sleeve 202g, the sleeve 202g is a corrugated cylindrical steel pipe, a conical notch is formed in one end of the sleeve 202g, the minimum circular radius of the notch is 15mm larger than that of the cone 202c, the sleeve 202g can rotate along with the anchor rod 201 through the second piece 202e, the sleeve 202g and the spiral blade 202b form a conveying auger, and when the conveying auger is specifically arranged, the rear end of the sleeve and the rear end of the anchor rod 201 are kept outside a drill hole so as to be convenient to adjust.

Further, the wall thickness of the sleeve 202g is 1-2mm, the wall thickness setting of the optimized scheme ensures the strength of the sleeve 202g, and simultaneously ensures that the sleeve 202g has certain flexibility and rebound performance, and is better straightened and expanded along with the cone 202c, the sleeve 202g is internally provided with a containing cavity for containing the cone 202c, and the cone 202c enables the sleeve to deform axially and deform radially by extruding the inner wall of the sleeve 202 g.

Further, the sleeve and the spiral blade 202b can be matched to convey the cut earth and stone out of the drill hole, so that the amount of concrete in the drill hole is increased, the drawing force of the anchor rod 201 can be effectively increased, and the earth and stone can be prevented from blocking the flow of concrete slurry in the drill hole.

Specifically, the spiral blade 202b is made of an elastic strip thin blade, such as spring steel, or an elastic metal plectrum, so as to have elastic deformation capability; the material is not limited to this material.

Specifically, the grouting holes 201a are formed in the anchor rod 201, the second grouting holes 202g-1 are formed in the sleeve 202g, the second grouting holes 202g-1 are located in the concave section of the sleeve wall and are integrated with surrounding rock, and therefore the grabbing force can be further improved; and further, the drawing force of the anchor rod 201 can be improved, so that the problems of poor side slope rock-soil body or insufficient drawing stress of the anchor rod 201 on an anchoring wall, and almost landslide caused by insufficient side slope reinforcement and support are effectively solved in a complex geographic environment.

Specifically, the cone 202c is provided with a first grout outlet 202d-1, a fixed end is formed at the end, and is used as a first defense line, when the inside of the sleeve 202g passes through the second grout outlet 202g-1, and after a stable configuration is formed inside and outside the sleeve 202g, the second part 202e can be removed, and when the first defense line fails, the cone 202c slides relatively with the sleeve 202g and filled concrete, and because the diameter of the cone is larger than the inner diameter of the sleeve 202g, the sleeve 202g can deform, and the deformation of the corrugated steel pipe is converted into the negative poisson effect of the structure through radial expansion deformation and longitudinal straightening deformation.

Specifically, the anchor rod 201 is provided with the fastening nut 201b, and the screwing direction of the fastening nut 201b is opposite to the rotation direction of the anchor rod 201, so that when the anchor rod 201 is rotated to cut the inner wall of the borehole, the screw blade 202b has resistance to move the earth and stone, the resistance is the same as the screwing direction of the jacking nut, and the fastening nut 201b can be screwed in through the resistance.

Specifically, the outer diameter of the helical blade 202b is smaller than the outer diameter of the drill bit 202a, facilitating insertion of the device.

Further, the anchor rod 201 is provided with a first grout outlet 202d-1 and a second grout outlet 202g-1 which are communicated with the grouting hole 201a extending axially, when the fastening nut 201b is in an initial state, the first grout outlet 202d-1 is just positioned in the sleeve, the sleeve is used for protecting the first grout outlet 202d-1, so that the first grout outlet 202d-1 is prevented from being blocked by earth and stones, and the better technical effect is achieved.

Further, the rear end of the anchor rod 201 is connected with a drill rod of the anchor rod 201 drilling machine through a transition sleeve 202g, the drill rod is provided with a hollow channel extending along the axial direction of the drill rod, and the rear end of the drill rod is connected with a gas source for providing compressed gas through a rotary joint, so that drilling holes can be drilled by utilizing the anchor rod 201 in combination with a drill bit 202a, synchronous drilling holes and drill expansion sections can be realized, and the working efficiency is improved; and by setting the outer diameter of the helical blade 202b not larger than the outer diameter of the drill bit 202a, thereby facilitating entry into the borehole, a hollow passage is provided in the anchor rod 201 such that one end thereof is connected to the cutting assembly 202 and the other end thereof is connected to a source of compressed gas, which may be a gas tank or an air compressor, which may then be introduced with compressed gas during drilling or cutting of the expansion section, so that the compressed gas enters the borehole and the sleeve from the first grout outlet 202d-1 and the second grout outlet 202 g-1.

Referring to fig. 5 to 8, in a second embodiment of the present invention, unlike the previous embodiment, the embodiment provides a device including a dismounting mechanism 100, which includes a plugboard 101, wherein an end portion of the plugboard 101 is configured as an inclined plane, so that the plugboard 101 can be inserted faster when being used for fixing, a limiting plate 102 is fixedly sleeved on the plugboard 101, a mounting groove 103 is formed in the plugboard 101, an extrusion component 104 and a fixing component 105 are disposed in the mounting groove 103, two limiting blocks 106 corresponding to the position of the extrusion component 104, and an unlocking component 107 disposed on the fixing component 105, the extrusion component 104 includes a driving block 104a disposed in the mounting groove 103, the limiting block 106 is driven to move by the driving block 104a, and under the cooperation of the limiting plate 102, the fixing component 105 includes a locking hook 105a and a locking block 105b disposed in the mounting groove 103, the extrusion component 104 is locked by the locking hook 105a and the locking block 105b, and the problem that when the extrusion component 104 is subjected to vibration, the extrusion component 104 is reset, the two limiting blocks 106a reset under the action of the elastic force of the two limiting blocks 106a and the elastic force is lost, and the two limiting blocks 106a are connected by the elastic force of the two limiting blocks 106a, and the elastic force is lost between the two limiting blocks 106a and 106 f.

Wherein, the barrel groove is arranged on the mounting block 202f, the inserting groove is arranged on the sleeve 202g, the limiting block is jacked into the inserting groove through the extrusion component and is matched with the limiting disc 102, so that the connection between the second piece 202e and the sleeve 202g is realized.

Specifically, the extrusion assembly 104 further includes a sleeve column 104b fixedly connected with the driving block 104a, an arc surface 104c arranged on the driving block 104a, and a first plane 104d arranged on the driving block 104a, wherein one end of the sleeve column 104b far away from the driving block 104a penetrates out of the plugboard 101, the sleeve column 104b is twisted to enable the sleeve column 104b to rotate, the sleeve column 104b drives the driving block 104a to rotate, the driving block 104a ejects the limiting block 106 from the inside of the mounting groove 103 through the arc surface 104c and enters the pluggroove, and the limiting block 106 can be better jacked up through the arrangement of the first plane 104 d.

Specifically, the elastic strip 106a is made of a shape memory alloy, and the shape memory alloy has self-recovery performance, good durability, rapid response speed, controllability and adjustability.

Specifically, the driving block 104a is further provided with a second plane 104e, the second plane 104e is perpendicular to the first plane 104d, the second plane 104e is used for precisely rotating the angle, and when the second plane 104e contacts with the surface of the limiting block 106, the driving block 104a cannot rotate any further.

When the device is used, the sleeve column 104b is twisted to enable the sleeve column 104b to rotate, the sleeve column 104b drives the driving block 104a to rotate, the driving block 104a ejects the two limiting blocks 106 from the inside of the mounting groove 103 through the cambered surface 104c, the limiting disc 102 is matched with the sleeve 202g to realize quick locking of the second piece 202e, when the second plane 104e of the driving block 104a contacts with the limiting block 106, the limiting block 106 moves to a proper position at the moment, the limiting block 106 can be better jacked up through the arrangement of the first plane 104d, the elastic strips 106a can be pulled to deform after the two limiting blocks 106 are ejected, and when the limiting block 106 is not extruded by the driving block 104a any more, the device can be automatically reset under the action of the elastic strips 106 a.

Specifically, the fixing component 105 comprises a spring plate 105c arranged between the driving block 104a and the lock hook 105a, the driving block 104a is connected with the lock hook 105a through the spring plate 105c, a first inclined plane 105d arranged on the lock hook 105a and a third plane 105e, the fixing component 105 further comprises a connecting column 105f arranged between the mounting groove 103 and the lock hook 105b, a second inclined plane 105g and a fourth plane 105h arranged on the lock hook 105b, a certain movement space is formed between the lock hook 105b and the inner wall of the mounting groove 103 through the connecting column 105f, when the driving block 104a ejects the limiting block 106, the sleeve column 104b is pushed to drive the driving block 104a to move towards the direction of the lock block 105b, so that the first inclined plane 105d on the lock hook 105a is in contact with the second inclined plane 105g on the lock hook 105b, when the lock hook 105a continues to move to the space between the lock hook 105b and the inner wall of the mounting groove 103, the second inclined plane 105g on the lock hook 105b is not in contact with the first inclined plane 105a, the first inclined plane 105d on the lock hook 105a is not in contact with the lock hook 105a, and the first plane 105b is not in contact with the lock hook 105b, and the first plane 105b can be in contact with the lock 105a, and the first plane 105b can be locked by the side 105b is not in contact with the first plane 105b, and the first plane 105b can be further locked, and the driving block 105a can be in contact with the rotation plane 105b, and the second plane 105b can be in contact with the side and can not be locked with the side and closed;

the lock hook 105a is provided with two lock blocks 105b symmetrically, and in an initial state, a first inclined plane 105d on the lock hook 105a and a second inclined plane 105g on the lock block 105b are not corresponding in position, and when the driving block 104a rotates ninety degrees, the positions of the two lock blocks are corresponding;

further, the length of the limiting block 106 is matched with the moving track of the driving block 104a, that is, when the driving block 104a moves, the first plane 104d on the driving block 104a always abuts against the limiting block 106, so that the stability of the limiting block 106 for connecting the sleeve 202g with the second piece 202e is ensured;

further, the end of the latch hook 105a is arc-shaped, so that the latch hook 105a can reduce abrasion when contacting with the inner wall of the mounting groove 103 and resetting under the action of the spring plate 105 c.

Specifically, the unlocking assembly 107 includes a sliding post 107a disposed inside the sleeve 104b, the sliding post 107a slides out of the sleeve 104b, and a connecting plate 107b rotationally connected to the sliding post 107a, one end of the connecting plate 107b away from the sliding post 107a is rotationally connected to the locking hook 105a, when the connection between the sleeve 202g and the second member 202e needs to be disconnected, the sliding post 107a is pushed to move toward the locking piece 105b, the sliding post 107a drives the two locking hooks 105a to open through the two connecting plates 107b, so that the third planes 105e of the two locking hooks 105a are no longer in contact with the fourth planes 105h on the locking piece 105b, and the locking of the driving piece 104a is released.

When the lock is used, the sleeve column 104b is pushed to drive the driving block 104a to move towards the lock block 105b, so that the first inclined surface 105d on the lock hook 105a is contacted with the second inclined surface 105g on the lock block 105b, the lock hook 105a rotates, and when the lock hook 105a continues to move to a space between the lock block 105b and the inner wall of the mounting groove 103, the lock hook 105a is reset under the action of the elastic sheet 105c, so that the third plane 105e on the lock hook 105a is contacted with the fourth plane 105h on the lock block 105b, and the locking of the driving block 104a is completed;

by pushing the sliding column 107a, the sliding column 107a moves towards the lock block 105b, the sliding column 107a drives the two lock hooks 105a to open through the two connecting plates 107b, so that the third plane 105e of the two lock hooks 105a is not contacted with the fourth plane 105h on the lock block 105b any more, the locking of the driving block 104a is released, the sleeve column 104b is pulled, the sleeve column 104b drives the driving block 104a to reset, the driving block 104a is rotated, and the dismounting mechanism 100 is removed, so that unlocking between the sleeve 202g and the second piece 202e can be completed.

Embodiment 3, which is a third embodiment of the present invention, unlike the previous embodiment, provides a method for anchoring a slope anchor, including the slope anchor reinforcing structure of the above embodiment, which includes the steps of: inserting the anchor rod 201 into a borehole in a side slope; during insertion, the cutting assembly 202 is used to operatively cut the interior wall of the borehole so as to create a counterbore within the borehole; step two: placing the cutting assembly 202 at the deepest point of the borehole and maintaining the middle of the helical blade 202b curved outwardly; step three: a concrete slurry is injected into the gap between the borehole and the anchor rod 201 by the pressurizing means.

Specifically, the third step includes: step a: sequentially installing a slurry stop plug, a gasket and a fastening nut 201 b; step b: concrete slurry is injected through the grouting channel.

Specifically, the fastening nut 201b is tightly combined with the convex portion of the tray 203 through the anchor rod 201, so as to realize pre-tension pulling. The outward convex portion of the tray 203 structure deforms toward the inside of the surrounding rock to play a buffering role when the tensile force is excessive.

The rest of the structure is the same as in embodiment 2.

In summary, the fastening nut 201b is tightly combined with the convex portion of the tray 203 through the anchor rod 201, so as to realize pre-tension pulling. When tension force is overlarge, the outward protruding part of the tray 203 structure deforms towards the inside of surrounding rock to play a buffering role, radial expansion characteristic and axial return straight deformation are generated through relative sliding of the cone 202c and the sleeve 202g, and then great constant resistance is generated, the sleeve 202g is enabled to have the dual functions of circumferential expansion and radial extension through the negative poisson ratio structural effect, the requirement of large deformation can be met, the anchoring effect of the anchor rod 201 can be greatly improved, the stability of a power transmission tower foundation is protected, and further various rock-soil body geological disasters of the power transmission tower foundation are prevented.

It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims

1. The utility model provides a stock reinforced structure for side slope which characterized in that: comprising the steps of (a) a step of,

the reinforcing mechanism (200) comprises an anchor rod (201), a cutting assembly (202) arranged on the anchor rod (201) and a tray (203) sleeved on the anchor rod (201);

the cutting assembly (202) comprises a drill bit (202 a) and a spiral blade (202 b), and the drill bit (202 a) and the spiral blade (202 b) are driven to drill and ream holes on a side slope through rotation of the anchor rod (201) to form stepped holes.

2. A slope anchor bar reinforcement structure as in claim 1, wherein: the cutting assembly (202) further comprises a cone (202 c) connected to the anchor rod (201), a first piece (202 d) connected to the cone (202 c), a second piece (202 e) connected to the tray (203), a mounting block (202 f) connected to the second piece (202 e), and a sleeve (202 g) detachably connected to the mounting block (202 f);

the side of the first piece (202 d) away from the anchor rod (201) is connected with a drill bit (202 a);

the helical blade (202 b) is disposed on the sleeve (202 g).

3. A slope anchor bar reinforcement structure as in claim 2, wherein: the spiral blade (202 b) is an elastic strip thin blade.

4. A slope anchor bar reinforcement as in claim 2 or 3, wherein: grouting holes (201 a) are formed in the anchor rods (201);

the first piece (202 d) is provided with a first slurry outlet (202 d-1);

the sleeve (202 g) is provided with a second slurry outlet (202 g-1).

5. The anchor bar reinforcement structure for a side slope as claimed in claim 4, wherein: the anchor rod (201) is provided with a fastening nut (201 b), and the screwing direction of the fastening nut (201 b) is opposite to the rotation direction of the anchor rod (201).

6. A slope anchor bar reinforcement structure as in claim 5, wherein: the outer diameter of the helical blade (202 b) is smaller than the outer diameter of the drill bit (202 a).

7. A slope anchor bar reinforcement structure as in claim 6, wherein: still include dismouting mechanism (100), still include plugboard (101), locate spacing dish (102) on plugboard (101), set up mounting groove (103) on plugboard (101), locate extrusion subassembly (104) and fixed subassembly (105) inside mounting groove (103), with two stopper (106) that extrusion subassembly (104) correspond, and locate unlocking subassembly (107) on fixed subassembly (105).

8. An anchor rod anchoring method for a side slope is characterized by comprising the following steps of: comprising the anchor rod reinforcing structure for a side slope according to any one of claims 1 to 7, and,

step one: inserting an anchor rod (201) into a borehole in a side slope;

during insertion, working the inner wall of the borehole with a cutting assembly (202) to form a counterbore within the borehole;

step two: positioning the cutting assembly (202) at the deepest point of the borehole and maintaining the middle of the helical blade (202 b) curved outwardly;

step three: concrete grout is injected into the gap between the borehole and the anchor rod (201) by the pressurizing means.

9. A slope anchor rod anchoring method as in claim 8, wherein: the third step comprises:

step a: sequentially installing a slurry stop plug, a gasket and a fastening nut (201 b);

step b: concrete slurry is injected through the grouting channel.

10. A slope anchor rod anchoring method as in claim 9, wherein: the fastening nut (201 b) is tightly combined with the outer protruding part of the tray (203) through the anchor rod (201), pre-tension pulling is achieved, and when the outer protruding part of the tray (203) structure occurs when tension force is overlarge, the deformation of the outer protruding part of the tray (203) structure towards the surrounding rock plays a role of buffering.