Split rod section type anti-pulling anchor rod capable of being cooperatively deformed

Abstract

The utility model discloses a split rod section type anti-pulling anchor rod capable of being cooperatively deformed. The split rod section type anti-pulling anchor rod comprises two spiral rod sections, a straight rod section, a single-side sleeving rod section and a tray assembly. A double-side sleeving rod section is in threaded connection between the two screw rod sections; the straight rod section is fixedly connected to one end of one spiral rod section, and the straight rod section and the spiral rod sections are integrally formed. The single-side sleeving rod section is in threaded connection with the end part, far away from the straight rod section, of the spiral rod section; the tray assembly is in threaded connection with the outer wall of the single-side sleeving rod section; wherein the outer wall of the single-side sleeving rod section is in threaded connection with a first anti-pulling resistance-increasing ring, and the outer wall of the double-side sleeving rod section is in threaded connection with two first anti-pulling resistance-increasing rings; and the outer wall of the straight rod section is in threaded connection with two second anti-pulling resistance-increasing rings which are arranged side by side. According to the utility model, the effects of stretching and compression deformation can be achieved, the effect of cooperating with surrounding rock deformation is achieved, and the rod body is effectively prevented from losing efficacy.

Description

Technical Field

[0001] The utility model relates to the technical field of underground engineering anchoring, in particular to a split-rod-segment type cooperatively deformable and pull-out resistant anchor rod. Background Art

[0002] Anchor reinforcement technology is one of the important support technologies in geotechnical engineering, which can fully mobilize the self-stabilizing capacity of rock and soil. Anchor support has little disturbance to the original rock, good support effect, low cost, can effectively prevent the deformation and damage of the surrounding rock, and play a role in stabilizing the surrounding rock. It is a safe, reliable and cost-effective reinforcement technology. The many advantages of anchor support technology make this technology the main support technology in the field of geotechnical engineering.

[0003] At present, the construction of underground space engineering, including tunnel engineering, deep mineral resource exploitation and underground oil and gas storage projects, has gradually entered a stage of rapid development. As the construction of underground space engineering gradually develops in the direction of "deeper, longer, more and more complex", in the next few decades, my country will inevitably face more complex geotechnical support problems in the fields of underground tunnel engineering and deep mineral resource exploitation engineering. In addition, the field of geotechnical engineering construction shows a trend of developing in the direction of deep depth, which brings with it more and more surrounding rock stability problems, and geological disasters caused by improper support are also emerging in an endless stream, posing a serious threat to the normal and safe construction of underground space engineering and the safety of life and property of personnel.

[0004] The deep surrounding rock environment in deep underground space projects has great deformation energy, and has the characteristics of high stress, large deformation and strong time effect, which are usually manifested as large deformation of rock burst, large deformation of soft rock and large deformation of impact, etc. The characteristics of deep surrounding rock that are different from those of shallow surrounding rock have brought huge risks to deep tunnel projects, deep mining projects, etc., and also posed new challenges to deep rock support technology.

[0005] Although traditional anchor rods can effectively control the deformation of surrounding rocks, when faced with deep rock masses with large deformation characteristics, due to the low elongation of traditional anchor rods, it is difficult to effectively coordinate the deformation of the surrounding rock and thus release the energy generated by the deformation of the surrounding rock. When the surrounding rock undergoes a large deformation, traditional anchor rods are often broken due to insufficient elongation, resulting in failure of the anchor support system.

[0006] Therefore, a split-segment anchor rod with cooperative deformation and anti-pulling effect is proposed. Utility Model Content

[0007] The utility model aims to provide a split-rod-segment type anti-pullout anchor rod which can be deformed cooperatively, aiming to solve or improve at least one of the above-mentioned technical problems.

[0008] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a split-rod-segment type cooperatively deformable and anti-pulling anchor rod, comprising:

[0009] Two spiral rod segments, with a double-side sleeve rod segment threadedly connected between the two spiral rod segments;

[0010] A straight rod segment, wherein the straight rod segment is fixedly connected to one end of one of the spiral rod segments, and the straight rod segment and the spiral rod segment are integrally formed;

[0011] A single-side sleeve rod section, wherein the single-side sleeve rod section is threadedly connected to an end of the spiral rod section away from the straight rod section;

[0012] A tray assembly, wherein the tray assembly is threadedly connected to the outer wall of the single-sided sleeve rod section;

[0013] Among them, a first anti-pullout resistance increasing ring is threadedly connected on the outer wall of the single-sided sleeve rod section, and two of the first anti-pullout resistance increasing rings are threadedly connected on the outer wall of the double-sided sleeve rod section; and two second anti-pullout resistance increasing rings arranged side by side are threadedly connected on the outer wall of the straight rod section.

[0014] According to a split-rod-segment type anti-pulling anchor rod provided by the utility model, the tray assembly includes:

[0015] An anchor rod tray, the anchor rod tray is sleeved on the outer wall of the single-side sleeve rod section;

[0016] A rubber gasket, which is sleeved on the outer wall of the single-side sleeve rod segment; the rubber gasket abuts against the end surface of the anchor rod tray close to the spiral rod segment;

[0017] A pre-tightening nut is threadedly connected to the outer wall of the single-sided sleeve rod section; the pre-tightening nut abuts against the end surface of the anchor rod tray away from the rubber gasket.

[0018] According to the split-rod-segment cooperatively deformable pull-out resistant anchor provided by the utility model, a plurality of first claws are welded on the outer wall of the first pull-out resistant resistance-increasing ring, and a plurality of second claws are welded on the outer wall of the second pull-out resistant resistance-increasing ring;

[0019] A plurality of the first claws are arranged at equal intervals along the circumference of the outer wall of the first anti-pullout resistance-increasing ring, and a plurality of the second claws are arranged at equal intervals along the circumference of the outer wall of the second anti-pullout resistance-increasing ring.

[0020] According to a split rod segment type cooperatively deformable and pull-out resistant anchor rod provided by the utility model, both ends of the double-sided sleeve rod segment are provided with a first threaded hole, the outer wall of the spiral rod segment is provided with a first external thread, and the first external thread is threadably matched with the first threaded hole.

[0021] According to a split-rod-segment cooperatively deformable and pull-out resistant anchor rod provided by the utility model, a second threaded hole is formed at one end of the single-sided sleeve rod segment away from the pre-tightening nut, and the second threaded hole is threadably matched with the first external thread.

[0022] According to the split rod segment type cooperatively deformable pull-out resistant anchor rod provided by the utility model, the outer wall of the single-side sleeve rod segment and the outer wall of the double-side sleeve rod segment are both provided with a first external thread, the inner wall of the first pull-out resistant resistance increasing ring is provided with a first internal thread, and the first external thread is threadably matched with the first internal thread;

[0023] A second external thread is provided on the outer wall of the straight rod section, and a second internal thread is provided on the inner wall of the second anti-pullout resistance-increasing ring, and the second external thread is threadably matched with the second internal thread.

[0024] According to a split-rod-segment cooperatively deformable and pull-out resistant anchor rod provided by the utility model, the number of the first claws is three, a first iron ring is welded between the three first claws, the number of the second claws is three, a second iron ring is welded between the three second claws.

[0025] According to the split-rod-segment cooperatively deformable and pull-out resistant anchor rod provided by the utility model, the rubber gasket adopts a high-performance rubber gasket.

[0026] The utility model discloses the following technical effects:

[0027] The anchor rod of the utility model comprises two spiral rod sections, a straight rod section, a single-side sleeve rod section and a tray assembly, and adopts the form of a combined spiral rod section, which can play the effect of tensile and compressive deformation, provide a certain amount of deformation, and achieve the effect of coordinated deformation of the surrounding rock; in the process of large deformation of the surrounding rock, the combined spiral rod section can cooperate with the surrounding rock deformation in the form of tensile elongation, and when the tensile deformation limit is reached, the anchor rod can further exert the extension characteristics of its material, thereby further providing deformation effect; when the rod body is subjected to impact, it can also provide compression deformation through the compression effect of the split rod section, and can effectively exert the compression performance of the anchor rod within the load-bearing range, which is conducive to the continuous and stable performance of the anchoring effect of the rod body, and effectively prevents the failure of the rod body;

[0028] The utility model can increase the tensile strength through the first pull-out resistance increasing ring and the second pull-out resistance increasing ring, thereby solving the problem that the existing anchor rods are difficult to coordinate with the surrounding rock deformation and are easily pulled out and fail when facing deep rock masses; it can effectively prevent the relative slippage and bonding damage between the anchor rod and the surrounding grouting body, effectively prevent the anchor rod from slipping and failing, increase the pull-out resistance, thereby preventing the anchor rod from slipping and failing, and realize the passive support function in the process of surrounding rock deformation;

[0029] The utility model can effectively increase the contact area between the grouting body and the spiral rod segment through the two spiral rod segments, so that the grouting body and the spiral rod segment are fully and effectively contacted, thereby increasing the contact area and bonding performance between the spiral rod segment and the grouting body, and effectively preventing the bonding damage between the anchor rod and the grouting body; compared with ordinary anchor rods, the spiral rod segment has greater elongation performance, can cooperate with the surrounding rock to perform tensile and compressive deformation during the deformation of the surrounding rock, and generate a large tensile axial force in the process of cooperative deformation of the surrounding rock, providing a tensile effect;

[0030] The utility model can cope with the problem of large deformation of deep surrounding rock, ensure the safe and efficient development of deep engineering construction, is suitable for deep surrounding rock and can coordinate with large deformation of surrounding rock, so as to effectively coordinate with the deformation of surrounding rock, provide effective support effect, meet the support needs of deep surrounding rock, and solve the problem that existing anchor rods are difficult to coordinate with the deformation of surrounding rock and are easily pulled out and fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the structure of the utility model;

[0033] Figure 2 The structure of the first pull-out resistance-enhancing ring in the utility model is shown in FIG. Figure Ⅰ ;

[0034] Figure 3 The structure of the first pull-out resistance-enhancing ring in the utility model is shown in FIG. Figure II ;

[0035] Figure 4 The structure of the second pull-out resistance-enhancing ring in the utility model is shown in FIG. Figure Ⅰ ;

[0036] Figure 5 The structure of the second pull-out resistance-enhancing ring in the utility model is shown in FIG. Figure II ;

[0037] Among them, 1. pre-tightening nut; 2. anchor tray; 3. high-performance rubber gasket; 4. single-sided sleeve rod section; 5. first anti-pull-out resistance increasing ring; 6. spiral rod section; 7. double-sided sleeve rod section; 8. straight rod section; 9. second anti-pull-out resistance increasing ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] Reference Figure 1-5 The utility model provides a split-rod-segment type cooperatively deformable and pull-out resistant anchor rod, comprising:

[0041] Two spiral rod segments 6, and a double-sided sleeve rod segment 7 is threadedly connected between the two spiral rod segments 6; the spiral rod segment 6 is made by applying prestress, and can withstand greater pull-out force; the spiral structure adopted by the spiral rod segment 6 can absorb energy under pressure and stretch like a spring, and can effectively exert the compression energy absorption performance and tensile deformation performance of the anchor within the load range; the spiral structure of the spiral rod segment 6 has a large tensile and compression deformation amount, and can cooperate with the surrounding rock to produce a large deformation. The spiral structure can make the grouting body fully surround it, effectively increasing the bonding strength and anti-slip performance of the spiral rod segment of the anchor;

[0042] A straight rod segment 8, the straight rod segment 8 is fixedly connected to one end of one of the spiral rod segments 6, and the straight rod segment 8 and the spiral rod segment 6 are integrally formed;

[0043] A single-side sleeve rod section 4, wherein the single-side sleeve rod section 4 is threadedly connected to an end of a spiral rod section 6 away from the straight rod section 8;

[0044] A tray assembly, the tray assembly is threadedly connected to the outer wall of the single-side sleeve rod section 4;

[0045] The first pull-out resistance increasing ring 5 is threadedly connected to the outer wall of the single-side sleeve rod section 4, and two first pull-out resistance increasing rings 5 ​​are threadedly connected to the outer wall of the double-side sleeve rod section 7; and two second pull-out resistance increasing rings 9 arranged side by side are threadedly connected to the outer wall of the straight rod section 8;

[0046] With such arrangement, the anchor rod of the utility model comprises two spiral rod sections 6, a straight rod section 8, a single-side sleeve rod section 4 and a tray assembly, and adopts the form of a combined spiral rod section, which can play the role of tensile and compressive deformation, provide a certain amount of deformation, and achieve the effect of coordinated deformation of the surrounding rock; in the process of large deformation of the surrounding rock, the combined spiral rod section 6 can cooperate with the surrounding rock deformation in the form of tensile elongation, and when the tensile deformation limit is reached, the anchor rod can further exert the extension characteristics of its material, thereby further providing deformation effect; when the rod body is subjected to impact, it can also provide compression deformation through the compression effect of the split rod section, and can effectively exert the compression performance of the anchor rod within the load-bearing range, which is conducive to the continuous and stable performance of the anchoring effect of the rod body, and effectively prevents the failure of the rod body;

[0047] The utility model can increase the tensile strength through the first pull-out resistance increasing ring 5 and the second pull-out resistance increasing ring 9, and solve the problem that the existing anchor rods are difficult to coordinate with the surrounding rock deformation and are easily pulled out and fail when facing deep rock masses; it can effectively prevent the relative slippage and bonding damage between the anchor rod and the surrounding grouting body, and can effectively prevent the anchor rod from slipping and failing, and increase the pull-out resistance, thereby preventing the anchor rod from slipping and failing, and realizing the passive support function in the process of surrounding rock deformation;

[0048] The utility model can effectively increase the contact area between the grouting body and the spiral rod segment 6 through the two spiral rod segments 6, so that the grouting body and the spiral rod segment 6 are fully and effectively contacted, thereby increasing the contact area and bonding performance between the spiral rod segment 6 and the grouting body, and effectively preventing the bonding damage between the anchor rod and the grouting body; compared with ordinary anchor rods, the spiral rod segment 6 has greater elongation performance, can cooperate with the surrounding rock to perform tensile and compressive deformation during the deformation of the surrounding rock, and generate a large tensile axial force in the process of cooperative deformation of the surrounding rock, providing a tensile effect;

[0049] The utility model can cope with the problem of large deformation of deep surrounding rock, ensure the safe and efficient development of deep engineering construction, is suitable for deep surrounding rock and can coordinate with large deformation of surrounding rock, so as to effectively coordinate with the deformation of surrounding rock, provide effective support effect, meet the support needs of deep surrounding rock, and solve the problem that existing anchor rods are difficult to coordinate with the deformation of surrounding rock and are easily pulled out and fail.

[0050] To further optimize the solution, the tray components include:

[0051] An anchor tray 2, the anchor tray 2 is sleeved on the outer wall of the single-side sleeve rod section 4;

[0052] A rubber gasket is sleeved on the outer wall of the single-side sleeve rod section 4; the rubber gasket abuts against the end surface of the anchor tray 2 close to the spiral rod section 6;

[0053] A pre-tightening nut 1, which is threadedly connected to the outer wall of the single-side sleeve rod section 4; the pre-tightening nut 1 abuts against the end surface of the anchor rod tray 2 away from the rubber gasket;

[0054] During installation, first install the first anti-pullout resistance increasing ring 5 on the outer peripheral side of the single-sided sleeve rod segment 4 and the double-sided sleeve rod segment 7; then twist the left side of the first (left) spiral rod segment 6 into the single-sided sleeve rod segment 4; then twist the right side of the first spiral rod segment 6 and the left side of the second spiral rod segment 6 into the double-sided sleeve rod segment 7 respectively; finally, screw the two second anti-pullout resistance increasing rings 9 onto the straight rod segment 8, thereby completing the installation of the anchor rod body.

[0055] When it is officially used, put the anchor rod installed according to the above steps into the drill hole, inject the grouting slurry evenly and fully into the drill hole, and then put the high-performance rubber gasket 3 into the rock surface where the anchor rod is located to block the slurry and prevent it from overflowing. Then put the anchor tray from the anchor tail to make it abut against the high-performance rubber gasket 3, and finally screw in the pre-tightening nut 1 to press it tightly on the anchor tray 2, thereby completing the overall installation of the anchor rod during the use stage.

[0056] Further optimizing the scheme, a plurality of first claws are welded on the outer wall of the first anti-pullout resistance increasing ring 5, and a plurality of second claws are welded on the outer wall of the second anti-pullout resistance increasing ring 9;

[0057] A plurality of first claws are arranged at equal intervals along the circumference of the outer wall of the first anti-pullout resistance-increasing ring 5, and a plurality of second claws are arranged at equal intervals along the circumference of the outer wall of the second anti-pullout resistance-increasing ring 9;

[0058] The first claw and the second claw can provide engagement resistance during the deformation and movement of the anchor rod, thereby effectively improving the pull-out resistance of the anchor rod and further increasing the overall stability of the anchor rod.

[0059] According to a further optimized solution, first threaded holes are provided at both ends of the double-sided sleeve rod section 7, and a first external thread is provided on the outer wall of the spiral rod section 6, and the first external thread is threadably matched with the first threaded hole.

[0060] According to a further optimized solution, a second threaded hole is formed at one end of the single-sided sleeve rod section 4 away from the pre-tightening nut 1 , and the second threaded hole is threadably matched with the first external thread.

[0061] Further optimizing the scheme, the outer wall of the single-side sleeve rod section 4 and the outer wall of the double-side sleeve rod section 7 are both provided with a first external thread, and the inner wall of the first anti-pulling resistance increasing ring 5 is provided with a first internal thread, and the first external thread is threadably matched with the first internal thread;

[0062] A second external thread is provided on the outer wall of the straight rod section 8, and a second internal thread is provided on the inner wall of the second anti-pullout resistance-increasing ring 9, and the second external thread is threadably matched with the second internal thread.

[0063] A further optimized solution is that the number of the first claws is three, and a first iron ring is welded between the three first claws; the number of the second claws is three, and a second iron ring is welded between the three second claws; while providing greater pull-out resistance, it can provide greater tightening force to the single-sided sleeve rod segment 4 and the double-sided sleeve rod segment 7, thereby effectively preventing slippage failure between the spiral rod segment 6 and the sleeve rod segment.

[0064] To further optimize the solution, the rubber gasket adopts high-performance rubber gasket 3.

[0065] Further optimizing the scheme, the spiral rod segment 6, the first pull-out resistance increasing ring 5, the second pull-out resistance increasing ring 9, the single-side sleeve rod segment 4, the double-side sleeve rod segment 7, the pre-tightening nut 1, and the anchor tray 2 can be made of metal materials with good elongation and high strength such as carbon steel;

[0066] The high-performance rubber gasket 3 can be made of wear-resistant and waterproof rubber materials such as high-performance rubber nanocomposite materials.

[0067] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technical users in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A split-segment type cooperatively deformable and anti-pulling anchor rod, characterized in that: include: Two spiral rod segments (6), wherein a double-sided sleeve rod segment (7) is threadedly connected between the two spiral rod segments (6); A straight rod segment (8), wherein the straight rod segment (8) is fixedly connected to one end of one of the spiral rod segments (6), and the straight rod segment (8) and the spiral rod segment (6) are integrally formed; A single-sided sleeve rod section (4), wherein the single-sided sleeve rod section (4) is threadedly connected to an end of the spiral rod section (6) away from the straight rod section (8); A tray assembly, the tray assembly being threadedly connected to the outer wall of the single-sided sleeve rod section (4); Wherein, a first anti-pullout resistance increasing ring (5) is threadedly connected on the outer wall of the single-sided sleeve rod section (4), and two of the first anti-pullout resistance increasing rings (5) are threadedly connected on the outer wall of the double-sided sleeve rod section (7); and two second anti-pullout resistance increasing rings (9) arranged side by side are threadedly connected on the outer wall of the straight rod section (8).

2. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 1 is characterized in that: The tray assembly comprises: An anchor rod tray (2), the anchor rod tray (2) being sleeved on the outer wall of the single-sided sleeve rod section (4); A rubber gasket, the rubber gasket being sleeved on the outer wall of the single-side sleeve rod section (4); the rubber gasket abuts against the end surface of the anchor rod tray (2) close to the spiral rod section (6); A pre-tightening nut (1) is threadedly connected to the outer wall of the single-sided sleeve rod section (4); the pre-tightening nut (1) abuts against the end surface of the anchor rod tray (2) away from the rubber gasket.

3. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 1 is characterized in that: A plurality of first claws are welded on the outer wall of the first anti-pullout resistance increasing ring (5), and a plurality of second claws are welded on the outer wall of the second anti-pullout resistance increasing ring (9); A plurality of the first claws are arranged at equal intervals along the circumference of the outer wall of the first anti-pullout resistance increasing ring (5), and a plurality of the second claws are arranged at equal intervals along the circumference of the outer wall of the second anti-pullout resistance increasing ring (9).

4. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 2 is characterized in that: Both ends of the double-sided sleeve rod section (7) are provided with a first threaded hole, and the outer wall of the spiral rod section (6) is provided with a first external thread, and the first external thread is threadably matched with the first threaded hole.

5. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 4 is characterized in that: A second threaded hole is formed at one end of the single-sided sleeve rod section (4) away from the pre-tightening nut (1), and the second threaded hole is threadably matched with the first external thread.

6. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 1, characterized in that: The outer wall of the single-sided sleeve rod section (4) and the outer wall of the double-sided sleeve rod section (7) are both provided with a first external thread, and the inner wall of the first anti-pulling resistance increasing ring (5) is provided with a first internal thread, and the first external thread is threadably matched with the first internal thread; The outer wall of the straight rod section (8) is provided with a second external thread, the inner wall of the second anti-pulling resistance increasing ring (9) is provided with a second internal thread, and the second external thread is threadably matched with the second internal thread.

7. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 3 is characterized in that: The number of the first claws is three, and a first iron ring is welded between the three first claws. The number of the second claws is three, and a second iron ring is welded between the three second claws.

8. The split-rod-segment cooperatively deformable anti-pulling anchor rod according to claim 2, characterized in that: The rubber gasket is a high-performance rubber gasket (3).

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