CN114320408A - Sectional assembly type drilling and anchoring integrated grouting anchor rod - Google Patents
Sectional assembly type drilling and anchoring integrated grouting anchor rod Download PDFInfo
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- CN114320408A CN114320408A CN202111429276.8A CN202111429276A CN114320408A CN 114320408 A CN114320408 A CN 114320408A CN 202111429276 A CN202111429276 A CN 202111429276A CN 114320408 A CN114320408 A CN 114320408A
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Abstract
The invention belongs to the field of rock mass supporting equipment and discloses a sectional assembly type drilling and anchoring integrated grouting anchor rod. The anchor rod can be generally divided into three parts, namely a tail fixing section, a connecting section and a drilling section. The tail fixing section comprises a check valve, a shearing pin, a rod tail nut, a self-aligning spherical washer, a tray, a hole sealing rubber plug and a ribbed steel pipe of which two ends are respectively in a bolt and bolt hole structure; the connecting section has a simple structure and is directly a ribbed steel pipe with bolt and bolt hole structures at two ends respectively; the drilling section comprises a self-locking structure, a spring clamp, an expansion shell, a wedge body, a drill bit and a ribbed steel pipe with one end of a bolt structure. According to the invention, the drilling and anchoring integrated grouting anchor rod is split into a plurality of components, so that the drilling section, the connecting section and the tail fixing section of the anchor rod can be assembled in sequence in the drilling process. The anchor rod with different lengths can be manufactured conveniently by changing the number of the connecting sections, and the length of the anchor rod outside the surrounding rock can be kept to be shorter (the length of one assembly is the largest) all the time, so that the influence of the flexibility of the exposed rod piece on anchor rod drilling is reduced, and the drilling efficiency and safety are improved.
Description
Technical Field
The invention belongs to the field of rock mass supporting equipment, and particularly relates to a sectional assembly type drilling and anchoring integrated grouting anchor rod.
Background
The anchor rod is widely applied to the fields of mining and geotechnical engineering as an economic and effective support mode, the installation of the common anchor rod needs to be firstly carried out with drilling operation, but the hole collapse phenomenon is very serious in loose and broken surrounding rocks, so that the common anchor rod cannot play a role in time. And the adhesive force between the loose and broken surrounding rock and the anchoring agent is small, so that the damage is easy to occur along the contact interface of the loose and broken surrounding rock and the anchoring agent, and the anchor rod is difficult to fully play a role.
Based on the situation, the drilling and anchoring integrated grouting anchor rod is applied, and the anchor rod is provided with a drill bit, a shell expansion device and a grouting channel, so that the integrated construction operation of drilling, anchoring and grouting can be realized. However, the cost factor needs to be considered in engineering support, the diameter and rigidity of a large number of used anchor rods are far difficult to reach the standard of a special drill rod, the designed length of each anchor rod generally exceeds 2.4m, the corresponding flexibility is obvious, and certain bending deformation can occur under the action of gravity. In the drilling process of the anchor rod, particularly in the initial drilling stage, not only is sufficient pressure difficult to apply and the position deviation is easy to occur, but also the risk of hurting people due to large elastic collapse and fracture exists. Obviously, if the drilling and anchoring integrated grouting anchor rod capable of being assembled in sections can be invented, the drilling and anchoring integrated grouting anchor rod has important significance for weakening the influence of the flexibility of the anchor rod on the drilling process, improving the safety of supporting operation and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the anchor rod structure which can conveniently realize the manufacture of anchor rods with different lengths by changing the number of the connecting sections, reduce the influence of the flexibility of the exposed rod piece on the drilling of the anchor rod, and increase the drilling efficiency and the operation safety.
The invention is realized by the following technical scheme: the utility model provides a sectional type assembled bores anchor integration slip casting stock, stock can divide into the triplex on the whole, is tail solid section (1), linkage segment (2), drilling section (3) respectively:
the tail fixing section (1) comprises a check valve (8), a shearing pin hole (9), a rod tail nut (10), a self-aligning spherical washer (11), a tray (12), a hole sealing rubber plug (13) and a ribbed steel pipe (5) of which two ends are respectively provided with a bolt (21) and a bolt hole (22);
the connecting section (2) is a ribbed steel pipe (6) with the two ends respectively provided with a bolt (21) and a bolt hole (22) structure;
the drilling section (3) comprises a self-locking structure (15), a spring clamp (16), an expansion shell (17), a wedge body (18), a drill bit (19) and a ribbed steel pipe (7) with one end of a bolt (21) structure.
Preferably, the ribbed steel pipe (5), the ribbed steel pipe (6), and the ribbed steel pipe (7) have an outer diameter of 28mm, an internal undercut shape (cross section) of a circle, and a diameter of 15 mm.
Preferably, the maximum length of the single component corresponding to the tail fixing section (1), the connecting section (2) and the drilling section (3) is not more than 50 cm.
Preferably, the connecting sections (2) are 4 in number and consistent in length.
Preferably, the external drill can be structurally matched with the bolts (21) of the tail fixing section (1), the connecting section (2) and the drilling section (3).
Preferably, no holes are drilled in the rock bolt shank.
The invention has the following technical effects:
1. the anchor rod comprises tail solid section, linkage segment and drilling section, and wherein tail solid section and drilling section are general component, and to the different length of strutting requirements in the engineering practice only need change the size and the quantity of partial linkage segment and make up can, can reduce to a certain extent and strut the cost.
2. The sectional assembly mode can reduce the influence of the flexibility of the exposed rod piece on the anchor rod drilling, and the drilling efficiency and the operation safety are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a sectional assembly type drilling and anchoring integrated grouting anchor rod;
FIG. 2 is a sectional assembly type drilling and anchoring integrated grouting anchor rod tail fixing section;
FIG. 3 is a sectional assembly type drilling and anchoring integrated grouting anchor rod connecting section;
FIG. 4 is a sectional assembly type drilling and anchoring integrated grouting anchor rod drilling section;
in the figure, 1, a tail fixing section, 2, a connecting section, 3, a drilling section, 4, a segmented joint, 5, a ribbed steel pipe of the tail fixing section (1), 6, a ribbed steel pipe of the connecting section (2), 7, a ribbed steel pipe of the drilling section (3), 8, a check valve, 9, a shearing pin hole, 10, a rod tail nut, 11, a self-aligning spherical washer, 12, a tray, 13, a hole sealing rubber plug, 14, a shearing pin, 15, a self-locking structure, 16, a spring clamp, 17, a swelling shell, 18, a wedge body, 19, a drill bit, 20, a grouting hole, 21, a bolt structure, 22 and a bolt hole structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Fig. 1-4 show a sectional assembly type drilling and anchoring integrated grouting anchor rod, which can be generally divided into three parts, namely a tail fixing section (1), a connecting section (2) and a drilling section (3). The tail fixing section (1) comprises a check valve (8), a shearing pin hole (9), a rod tail nut (10), a self-aligning spherical washer (11), a tray (12), a hole sealing rubber plug (13) and a ribbed steel pipe (5) of which two ends are respectively provided with a bolt (21) and a bolt hole (22); the connecting section (2) is simple in structure and directly adopts a ribbed steel pipe (6) with the structure of a bolt (21) and a bolt hole (22) at two ends respectively; one end of the drilling section (3) is provided with a drill bit (19), and the other end is provided with a ribbed steel pipe (7) with a bolt (21) structure, and the drilling section further comprises a self-locking structure (15), a spring clamp (16), an expansion shell (17) and a wedge body (18).
The steel pipe with the rib (5), the steel pipe with the rib (6) and the steel pipe with the rib (7) have the outer diameter of 28mm, the internal undercut shape (cross section) of a circle and the diameter of 15 mm.
In order to ensure the operation safety and convenience in construction, the maximum length of the corresponding single component of the tail fixing section (1), the connecting section (2) and the drilling section (3) is not more than 50 cm.
Preferably, the tail fixing section (1), the connecting section (2) and the drilling section (3) can be assembled and connected with each other due to the adoption of a bolt structure.
Preferably, the connecting sections (2) can have different length specifications.
Preferably, the external drill can be structurally matched with the bolts (21) of the tail fixing section (1), the connecting section (2) and the drilling section (3).
Preferably, no holes are drilled in the shank.
The specific operation process of the invention is as follows:
step 1: firstly, connecting a bolt (21) structure of a drilling section (3) with a drilling machine, initially drilling at a designed (formulated) position, and stopping drilling and detaching the drilling machine when the exposed length of the drilling section (3) is about 1.5 times of the bolt (21) structure.
Step 2: connecting the bolt hole (22) structure of the connecting section (2) with the bolt (21) structure of the drilling section (3), and inserting a shear pin (14) at the connection position. And then, connecting the bolt (21) structure of the connecting section (2) with a drilling machine and performing drilling operation, and stopping drilling and detaching the drilling machine when the exposed length of the connecting section (2) is about 1.5 times of the bolt (21) structure.
And step 3: and (3) assembling a plurality of connecting sections (2) according to the field requirement or anchor rod length design according to the step 2.
And 4, step 4: and connecting the bolt hole (22) structure of the tail fixing section (1) with the bolt (21) structure of the connecting section (2), and inserting a shear pin (14) at the joint. And then, connecting the bolt (21) structure of the tail fixing section (1) with a drilling machine and performing drilling operation, wherein when the exposed length of the tail fixing section (1) is about 4 times of the bolt (21) structure.
And 5: and the drilling machine rotates reversely, the self-locking structure (15) of the drilling section (3) is utilized to realize pre-tightening and anchoring of the anchor rod, and then the drilling machine is disassembled.
Step 6: and connecting the tail part of the tail fixing section (1) with a grouting pump, and performing grouting operation through a grouting hole (20).
And 7: after grouting, a hole sealing rubber plug (13), a tray (12), a self-aligning spherical washer (11), a rod tail nut (10) and a check valve (8) are sequentially installed.
Preferably, the joints of the tail fixing section (1), the connecting section (2) and the drilling section (3) are provided with shearing pin holes (9), and the shearing whistle (14) is installed, so that the phenomenon that the assembled components are separated from each other due to the reverse rotation of the drilling machine can be avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a sectional type is assembled and is bored anchor integration slip casting stock which characterized in that: the stock comprises for tail solid section (1), linkage segment (2), drilling section (3), wherein:
the tail fixing section (1) comprises a check valve (8), a shearing pin hole (9), a rod tail nut (10), a self-aligning spherical washer (11), a tray (12), a hole sealing rubber plug (13) and a ribbed steel pipe (5) of which two ends are respectively provided with a bolt (21) and a bolt hole (22);
the connecting section (2) is a ribbed steel pipe (6) with the two ends respectively provided with a bolt (21) and a bolt hole (22) structure;
one end of the drilling section (3) is provided with a drill bit (19), and the other end is provided with a ribbed steel pipe (7) with a bolt (21) structure, and the drilling section further comprises a self-locking structure (15), a spring clamp (16), an expansion shell (17) and a wedge body (18).
2. The sectional assembly type drilling and anchoring integrated grouting anchor rod according to claim 1, characterized in that: the tail fixing section (1), the connecting section (2) and the drilling section (3) can be assembled and connected with each other.
3. The sectional assembly type drilling and anchoring integrated grouting anchor rod according to claim 1 or 2, characterized in that: the bolt structures of the tail fixing section (1), the connecting section (2) and the drilling section (3) can be used for connecting a jumbolter.
4. The sectional assembly type drilling and anchoring integrated grouting anchor rod according to claim 1 or 2, characterized in that: the connecting sections (2) have different length specifications, and a plurality of connecting sections (2) can be assembled according to field requirements or anchor rod length design.
5. The sectional assembly type drill-anchor integrated grouting anchor rod according to any one of claims 1, 2, 3 or 4, wherein: the maximum length of the tail fixing section (1), the connecting section (2) and the drilling section (3) corresponding to a single component is not more than 50 cm.
6. The sectional assembly type drill-anchor integrated grouting anchor rod according to any one of claims 1, 2, 3 or 4, wherein: the joints of the tail fixing section (1), the connecting section (2) and the drilling section (3) are provided with shearing pin holes (9), and the assembled components can be prevented from being separated from each other due to the reverse rotation of the drilling machine by installing shearing whistle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429276.8A CN114320408A (en) | 2021-11-29 | 2021-11-29 | Sectional assembly type drilling and anchoring integrated grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429276.8A CN114320408A (en) | 2021-11-29 | 2021-11-29 | Sectional assembly type drilling and anchoring integrated grouting anchor rod |
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| Publication Number | Publication Date |
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| CN114320408A true CN114320408A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111429276.8A Pending CN114320408A (en) | 2021-11-29 | 2021-11-29 | Sectional assembly type drilling and anchoring integrated grouting anchor rod |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419057A (en) * | 2022-08-31 | 2022-12-02 | 国网天津市电力公司建设分公司 | Detachable spiral anchor |
| CN116971733A (en) * | 2023-09-22 | 2023-10-31 | 中国矿业大学 | Probing and injecting integrated machine tool and process suitable for tunneling under complex geological conditions |
-
2021
- 2021-11-29 CN CN202111429276.8A patent/CN114320408A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419057A (en) * | 2022-08-31 | 2022-12-02 | 国网天津市电力公司建设分公司 | Detachable spiral anchor |
| CN116971733A (en) * | 2023-09-22 | 2023-10-31 | 中国矿业大学 | Probing and injecting integrated machine tool and process suitable for tunneling under complex geological conditions |
| CN116971733B (en) * | 2023-09-22 | 2023-12-12 | 中国矿业大学 | Probing and injecting integrated machine tool and process suitable for tunneling under complex geological conditions |
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