CN215804632U - Grouting anchor cable for roadway support - Google Patents
Grouting anchor cable for roadway support Download PDFInfo
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- CN215804632U CN215804632U CN202120889892.0U CN202120889892U CN215804632U CN 215804632 U CN215804632 U CN 215804632U CN 202120889892 U CN202120889892 U CN 202120889892U CN 215804632 U CN215804632 U CN 215804632U
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- grouting
- pipe
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- plugging
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Abstract
The utility model discloses a grouting anchor cable for roadway support, which comprises a cable body and a tray; the tray is fixedly sleeved outside the cable body; the cable body comprises a grouting pipe and a plurality of steel wires stranded outside the grouting pipe; the side wall of one end of the grouting pipe, which is far away from the tray, is provided with grouting holes; a plugging pipe is coaxially sleeved outside the grouting pipe; the plugging pipe slides along the axial direction to plug the grouting hole; one end of the plugging pipe, which is far away from the grouting hole, penetrates through the tray; the farthest distance from one end of the tray, which is far away from the grouting hole, to the grouting hole is smaller than the length of the plugging pipe. According to the grouting anchor cable for roadway support, on one hand, after grouting is completed, a grouting hole is plugged, so that slurry backflow is avoided, the problem of incompact anchoring caused by slurry backflow is prevented, and the overall anchoring capacity of the anchor cable is improved; on the other hand, when the grouting hole is plugged, the slurry can be extruded, so that the slurry is more compact, and the anchoring strength is improved.
Description
Technical Field
The utility model relates to the technical field of grouting anchor cables, in particular to a grouting anchor cable for roadway support.
Background
With the increase of the coal mining depth, the mine mining conditions are more complicated, and in order to ensure the roadway support effect, measures such as 'anchor cable reinforcement', 'grouting reinforcement', 'anchor frame combined support' and the like are generally adopted, so that the grouting anchor cable is widely used in the coal mine roadway.
The grouting through hole is formed in the middle of the grouting head of the existing grouting anchor cable, when the grouting connector is dismounted after grouting, the grouting pipe is communicated with the outside atmosphere through the grouting through hole, and because the pressure of grout in a rock stratum and the grouting pipe is greater than the outside pressure, a large amount of grout flows out through the grouting pipe and the grouting through hole, so that the grouting at the periphery of the anchor cable body is weak, and the overall anchoring capacity of the anchor cable body is reduced. Based on the above, the utility model aims to solve the technical problem of how to design a grouting anchor cable for roadway support for avoiding slurry backflow.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a grouting anchor cable for roadway support, which avoids slurry backflow.
The utility model solves the technical problems through the following technical means:
the grouting anchor cable for roadway support comprises a cable body and a tray; the tray is fixedly sleeved outside the cable body; the cable body comprises a grouting pipe and a plurality of steel wires stranded outside the grouting pipe; the side wall of one end of the grouting pipe, which is far away from the tray, is provided with grouting holes;
a plugging pipe is coaxially sleeved outside the grouting pipe; the plugging pipe slides along the axial direction to plug the grouting hole; one end of the plugging pipe, which is far away from the grouting hole, penetrates through the tray; the farthest distance from one end of the tray, which is far away from the grouting hole, to the grouting hole is smaller than the length of the plugging pipe.
As an improvement of the technical scheme, the grouting anchor cable for roadway support is characterized in that the inner wall of the plugging pipe is in fit sliding connection with the outer wall of the grouting pipe.
As an improvement of the above technical scheme, in the grouting anchor cable for roadway support, the outer wall of one end of the plugging pipe, which is far away from the grouting hole, extends outwards to form a limiting part; the farthest distance from one end of the tray, far away from the grouting hole, to the grouting hole is set as S1(ii) a The distance from one end of the plugging pipe close to the grouting hole to the limiting part is set as S2(ii) a Then S1Less than S2。
As an improvement of the technical scheme, one end of the plugging pipe close to the grouting hole is conical.
As an improvement of the technical scheme, the grouting anchor cable for roadway support is characterized in that a nut is arranged on the outer wall of one end, far away from the grouting hole, of the plugging pipe through a threaded connecting sleeve.
The utility model has the advantages that: according to the grouting anchor cable for roadway support, on one hand, after grouting is completed, a grouting hole is plugged, so that slurry backflow is avoided, the problem of incompact anchoring caused by slurry backflow is prevented, and the overall anchoring capacity of the anchor cable is improved; on the other hand, when the grouting hole is plugged, the slurry can be extruded, so that the slurry is more compact, and the anchoring strength is improved.
Drawings
Fig. 1 is a schematic structural view of a grouting anchor cable of the utility model.
Fig. 2 is a schematic view of the cable structure of the present invention.
Fig. 3 is a schematic view of the position of the plugging tube of the present invention.
Fig. 4 is a schematic structural diagram during grouting of the utility model.
Fig. 5 is a schematic structural diagram after grouting according to the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
a plugging pipe 13 is coaxially sleeved outside the grouting pipe 11; the plugging pipe 13 slides along the axial direction to plug the grouting hole 111; one end of the plugging pipe 13 far away from the grouting hole 111 penetrates through the tray 2; the farthest distance from one end of the tray 2 far away from the grouting hole 111 to the grouting hole 111 is less than the length of the plugging pipe 13;
the blocking pipe 13 blocks the grouting hole 111 through axial sliding after grouting is finished, so that slurry injected into the surrounding rock drill hole 9 is prevented from flowing back from the grouting hole 111, the problem of incompact anchoring caused by slurry backflow is prevented, and the overall anchoring capacity of the anchor cable is improved; in addition, when the grouting hole 111 is plugged, the plugging pipe 13 slides inwards to play a role in extruding slurry, so that the slurry is more compact, the loosening defect is relieved, and the anchoring strength is improved; one end of the plugging pipe 13, which is far away from the grouting hole 111, penetrates through the tray 2, so that the plugging pipe 13 is conveniently controlled to slide, and the relative position of the plugging pipe 13 and the grouting pipe 11 is further adjusted; the farthest distance from one end of the tray 2 far away from the grouting hole 111 to the grouting hole 111 is smaller than the length of the plugging pipe 13, so that the plugging pipe 13 can plug the whole grouting hole 111, and the plugging effect is ensured;
specifically, during grouting, the plugging pipe 13 is adjusted to slide relative to the grouting pipe 11, so that the grouting hole 111 is positioned outside the plugging pipe 13, then grouting is performed, and after the grouting is finished, one end, far away from the grouting hole 111, of the plugging pipe 13 is pushed, so that the grouting hole 111 is positioned in the plugging pipe 13, and the plugging of the plugging pipe 13 is realized;
according to the grouting anchor cable for roadway support, on one hand, after grouting is completed, a grouting hole is plugged, so that slurry backflow is avoided, the problem of incompact anchoring caused by slurry backflow is prevented, and the overall anchoring capacity of the anchor cable is improved; on the other hand, when the grouting hole is plugged, the slurry can be extruded, so that the slurry is more compact, and the anchoring strength is improved.
As an improvement of the above technical solution, the inner wall of the plugging tube 13 is in sliding connection with the outer wall of the grouting tube 11;
the inner wall of shutoff pipe 13 and the outer wall laminating sliding connection of slip casting pipe 11 for there is not the gap between shutoff pipe 13 and the slip casting pipe 11, when the injected hole 111 was located shutoff pipe 13 promptly, the inner wall shutoff of shutoff pipe 13 was outside injected hole 111, realized the shutoff of injected hole 111.
As an improvement of the above technical solution, the outer wall of one end of the plugging pipe 13 away from the grouting hole 111 extends outwards to form a limiting part 131; the farthest distance from one end of the tray 2 far away from the grouting holes 111 to the grouting holes 111 is set as S1(ii) a The distance from one end of the plugging pipe 13 close to the grouting hole 111 to the limiting part 131 is set as S2(ii) a Then S1Less than S2；
The limiting part 131 is arranged to facilitate the control of the inward pushing distance of the plugging pipe 13 when plugging the grouting hole 111; specifically, since the farthest distance from the end of the tray 2 far away from the grouting hole 111 to the grouting hole 111 is smaller than the distance from the end of the plugging pipe 13 near the grouting hole 111 to the limiting part 131, when the limiting part 131 abuts against the tray 2, the plugging pipe 13 plugs the grouting hole 111.
As an improvement of the above technical solution, one end of the plugging tube 13 close to the grouting hole 111 is conical;
the end of the plugging pipe 13 close to the grouting hole 111 is designed to be conical, so that the plugging pipe 13 is more labor-saving to push.
As an improvement of the above technical solution, the outer wall of one end of the plugging pipe 13 far away from the grouting hole 111 is provided with a nut 132 through a threaded connection sleeve;
and the nut 132 is arranged and used as a lockset of the grouting anchor cable to perform tensioning and pre-tightening work.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The grouting anchor cable for roadway support comprises a cable body (1) and a tray (2); the tray (2) is fixedly sleeved outside the cable body (1); the cable body (1) comprises a grouting pipe (11) and a plurality of steel wires (12) stranded outside the grouting pipe (11); the side wall of one end, far away from the tray (2), of the grouting pipe (11) is provided with grouting holes (111); the method is characterized in that:
a plugging pipe (13) is coaxially sleeved outside the grouting pipe (11); the plugging pipe (13) slides along the axial direction to plug the grouting hole (111); one end of the plugging pipe (13) far away from the grouting hole (111) penetrates through the tray (2); the farthest distance from one end of the tray (2) far away from the grouting hole (111) to the grouting hole (111) is less than the length of the plugging pipe (13).
2. The grouting anchor cable for roadway support according to claim 1, characterized in that: the inner wall of the plugging pipe (13) is attached to the outer wall of the grouting pipe (11) in a sliding connection mode.
3. The grouting anchor cable for roadway support according to claim 1, characterized in that: the outer wall of one end, far away from the grouting hole (111), of the plugging pipe (13) extends outwards to form a limiting part (131); the farthest distance from one end of the tray (2) far away from the grouting hole (111) to the grouting hole (111) is set as S1(ii) a The distance from one end of the plugging pipe (13) close to the grouting hole (111) to the limiting part (131) is S2(ii) a Then S1Less than S2。
4. The grouting anchor cable for roadway support according to claim 1, characterized in that: one end of the plugging pipe (13) close to the grouting hole (111) is conical.
5. The grouting anchor cable for roadway support according to claim 1, characterized in that: and a nut (132) is arranged on the outer wall of one end, far away from the grouting hole (111), of the plugging pipe (13) through a threaded connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120889892.0U CN215804632U (en) | 2021-04-27 | 2021-04-27 | Grouting anchor cable for roadway support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120889892.0U CN215804632U (en) | 2021-04-27 | 2021-04-27 | Grouting anchor cable for roadway support |
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| Publication Number | Publication Date |
|---|---|
| CN215804632U true CN215804632U (en) | 2022-02-11 |
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| CN202120889892.0U Active CN215804632U (en) | 2021-04-27 | 2021-04-27 | Grouting anchor cable for roadway support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352330A (en) * | 2022-03-18 | 2022-04-15 | 应急管理部国家自然灾害防治研究院 | A slip casting strut anchor rope equipment for preventing earthquake is strikeed to tunnel |
-
2021
- 2021-04-27 CN CN202120889892.0U patent/CN215804632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352330A (en) * | 2022-03-18 | 2022-04-15 | 应急管理部国家自然灾害防治研究院 | A slip casting strut anchor rope equipment for preventing earthquake is strikeed to tunnel |
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