CN210948738U - Quick high-strength anchor cable supporting system - Google Patents
Quick high-strength anchor cable supporting system Download PDFInfo
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- CN210948738U CN210948738U CN201922114915.6U CN201922114915U CN210948738U CN 210948738 U CN210948738 U CN 210948738U CN 201922114915 U CN201922114915 U CN 201922114915U CN 210948738 U CN210948738 U CN 210948738U
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- anchor cable
- grouting channel
- grouting
- cable body
- ball pad
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Abstract
The utility model discloses a fast high-strength anchor cable support system, which comprises an anchor cable body used for a back grouting section and an anchor cable front end used for a fast anchoring section; a grout blocking piece is arranged at the junction between the anchor cable body and the front end of the anchor cable; an anti-corrosion sleeve is sleeved on the anchor cable body and extends to the grout blocking piece along the front end direction of the anchor cable; an inner ring grouting channel is formed between the anchor cable body and the anti-corrosion sleeve, and an outer ring grouting channel is formed between the anti-corrosion sleeve and the hole wall of the anchor hole; the inner ring grouting channel and the outer ring grouting channel are communicated through a gap formed between the anti-corrosion sleeve and the slurry blocking piece; a base plate, a ball pad and an anchorage device are arranged at one end of the anchor cable body far away from the front end of the anchor cable; the ball pad is in threaded connection with the anti-corrosion casing pipe, and a grouting pipe communicated with the inner ring grouting channel is arranged on the ball pad; an exhaust pipe communicated with the outer ring grouting channel is inserted in the base plate.
Description
Technical Field
The utility model belongs to the technical field of underground works construction is strutted, concretely relates to quick high-strength anchor cable supporting system.
Background
At present, an anchoring system in underground engineering, particularly traffic tunnel engineering, basically takes a passively supported mortar anchoring system as a main part, but in weak broken rock masses, after a cavern is excavated, because surrounding rocks deform quickly and deform a large amount, at the moment, if a traditional passive anchoring system is still adopted, a surrounding rock plastic region and a displacement field can be rapidly increased, and further a stronger passive supporting system with higher manufacturing cost is required to be adopted to maintain tunnel stability. Therefore, active prestress strong supporting measures are selected inevitably in soft rock underground engineering, the anchoring system can rapidly construct a prestress anchor cable at the initial stage of excavation of the cavern, the active supporting function is realized, the bearing capacity of surrounding rocks can be effectively improved by the applied prestress, the bearing arch effect is formed, the existing passive supporting system can be optimized, and the cavern is kept stable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned among the prior art not enough, provide a quick high-strength anchor cable supporting system to solve and present in weak broken rock mass, passive anchor system cost is high, the problem that durability, reliability and security are low.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a fast high-strength anchor cable support system comprises an anchor cable body used for a rear grouting section and an anchor cable front end used for a fast anchoring section; a grout blocking piece is arranged at the junction between the anchor cable body and the front end of the anchor cable;
an anti-corrosion sleeve is sleeved on the anchor cable body and extends to the grout blocking piece along the front end direction of the anchor cable; an inner ring grouting channel is formed between the anchor cable body and the anti-corrosion sleeve, and an outer ring grouting channel is formed between the anti-corrosion sleeve and the hole wall of the anchor hole; the inner ring grouting channel and the outer ring grouting channel are communicated through a gap formed between the anti-corrosion sleeve and the slurry blocking piece; a base plate, a ball pad and an anchorage device are arranged at one end of the anchor cable body far away from the front end of the anchor cable; the ball pad is in threaded connection with the anti-corrosion casing pipe, and a grouting pipe communicated with the inner ring grouting channel is arranged on the ball pad; an exhaust pipe communicated with the outer ring grouting channel is inserted in the base plate.
Preferably, the front end of the anchor cable adopts an internal support mode to realize an enlarged head structure of the anchor cable at the front end.
Preferably, the corrosion-resistant sleeve is provided with external threads and is connected with the ball pad in a rotating mode.
Preferably, a grouting channel is formed in the ball pad, and the grouting pipe is communicated with the inner ring grouting channel through the grouting channel.
Preferably, the backing plate is provided with an exhaust hole, and the exhaust pipe is communicated with the outer ring grouting channel through the exhaust hole.
Preferably, the anchor cable body is made of medium carbon steel, and the size of the backing plate is 25cm × 25cm × 2 cm.
The utility model provides a quick high-strength anchor cable supporting system has following beneficial effect:
the utility model can quickly apply high prestress to the surrounding rock body, and realize the purpose of active strong support; meanwhile, the grouting compactness can be well ensured by adopting an inner ring grouting channel and an outer ring grouting channel which are composed of the anti-corrosion sleeve and the anchor cable body; and the grout and the anti-corrosion sleeve play a dual role in guaranteeing the durability of the cable body, make up the problems of insufficient durability of the chemical bonding material and possible insufficient anchoring force, realize the temporary and long-term supporting function of the anchoring system, and greatly improve the durability, reliability and safety of the anchoring system.
Drawings
Fig. 1 is a schematic structural view of a rapid high-strength anchor cable support system.
Fig. 2 is a cross section structure diagram of a rear grouting section of the rapid high-strength anchor cable support system.
Fig. 3 is a cross section structure diagram of a quick anchoring section of the quick high-strength anchor cable support system.
Wherein, 1, an anchor hole; 2. a chemical gelling material; 3. the bottom of the anchor hole; 4. an anchor cable body; 5. the front end of the anchor cable; 6. an anti-corrosion sleeve; 7. a base plate; 8. a ball pad; 9. an anchorage device; 10. a grouting pipe; 11. an exhaust pipe; 12. a slurry blocking member; 13. a post-grouting section; 14. a rapid anchoring section; 15. grouting channels of the inner ring; 16. and an outer ring grouting channel.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description of the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention will clearly and completely describe the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
According to one embodiment of the application, referring to fig. 1-3, the rapid high-strength anchor supporting system of the present scheme includes an anchor cable body 4 for a rear grouting section 13 and an anchor cable front end 5 for a rapid anchoring section 14; the anchor cable body 4 and the anchor cable front end 5 are two ends of an anchor cable, and a grout blocking piece 12 is arranged at the junction between the anchor cable body 4 and the anchor cable front end 5.
And (3) introducing the chemical cementing material 2 into the anchor hole 1, and quickly stirring the chemical cementing material 2 based on the front end 5 of the anchor cable.
The front end 5 of the anchor cable adopts an internal supporting mode to realize the structure of the enlarged head of the front-end anchor cable, so that the quick bonding is realized, and the structure of the enlarged head can enhance the bonding force of the bonding agent and the anchor cable.
The anchor cable body 4 is sleeved with the anti-corrosion sleeve 6, the anti-corrosion sleeve 6 extends to the slurry blocking piece 12 along the direction of the front end 5 of the anchor cable, the anti-corrosion sleeve 6 and the slurry blocking piece 12 are not sealed, and a gap is reserved between the anti-corrosion sleeve 6 and the slurry blocking piece 12 so that slurry can pass through the gap.
Furthermore, a space channel formed between the anchor cable body 4 and the corrosion-resistant sleeve 6 is an inner ring grouting channel 15, and a space channel formed between the corrosion-resistant sleeve 6 and the hole wall of the anchor hole 1 is an outer ring grouting channel 16.
The inner ring grouting channel 15 and the outer ring grouting channel 16 are communicated through a gap formed between the anti-corrosion sleeve 6 and the grout blocking piece 12, namely, grout firstly enters the inner ring grouting channel 15 and flows into the outer ring grouting channel 16 through the gap.
After the anti-corrosion sleeve 6 is sleeved on the anchor cable body 4, a backing plate 7, a ball pad 8 and an anchorage device 9 are arranged at one end of the anchor cable body 4 far away from the front end 5 of the anchor cable to fix the anchor cable body 4 and the anti-corrosion sleeve 6, wherein the ball pad 8 is rotatably connected with the anti-corrosion sleeve 6.
The anti-corrosion sleeve 6 is provided with external threads, the ball pad 8 is in threaded connection with the anti-corrosion sleeve 6, a grouting channel is formed in the ball pad 8, and the grouting pipe 10 is communicated with the inner ring grouting channel 15 through the grouting channel; the backing plate 7 is provided with an exhaust hole, and the exhaust pipe 11 is communicated with the outer ring grouting channel 16 through the exhaust hole.
The ball pad 8 is provided with a grouting pipe 10 communicated with the inner ring grouting channel 15; an exhaust pipe 11 communicated with an outer ring grouting channel 16 is inserted on the backing plate 7.
The anchor cable body 4 is made of medium carbon steel, and the size of the backing plate 7 is 25cm × 25cm × 2 cm.
The working principle of the scheme is as follows:
determining a target rock mass, and arranging an anchor hole 1 on the target rock mass; pushing the chemical cementing material 2 into the bottom 3 of the anchor hole, inserting the anchor cable body 4, and rapidly stirring the chemical cementing material 2 at the front end 5 of the anchor cable; after the chemical cementing material 2 is quickly condensed, the anti-corrosion sleeve 6 is sleeved on the anchor cable body 4 to form an inner ring grouting channel 15 and an outer ring grouting channel 16, and a backing plate 7, a ball pad 8 and an anchorage device 9 are installed for fixing, wherein the ball pad 8 is rotatably connected with the anti-corrosion sleeve 6; prestress tensioning equipment is adopted to apply prestress to the anchor cable body 4; and after the rock mass deforms stably, introducing grout into the inner ring grouting channel 15 and the outer ring grouting channel 16, and performing grouting bonding on the rear grouting section 13 until the exhaust pipe 11 returns to be grout.
The utility model realizes the injection of the slurry by connecting the ball pad 8 with the grouting hole with the grouting pipe 10; the threaded anti-corrosion sleeve 6 is effectively connected with the ball pad 8 with the grouting hole in a rotating mode, so that a gap between the anchor cable body and the anti-corrosion sleeve 6 is used as an inner ring grouting channel 15; the backing plate 7 with the exhaust hole is connected with the exhaust pipe 11, so that exhaust and slurry return in the grouting process are realized.
Through the cooperation between the above-mentioned structure, realized full closely knit of anchor rope slip casting, the slip casting layer can be fine with anticorrosive sleeve pipe 6 the durability of assurance anchor rope body simultaneously. And the post-grouting mode is adopted, grouting is carried out after the surrounding rock is basically deformed stably, and at the moment, mortar in the post-grouting section 13 is basically not stressed, so that cracking is basically avoided, water and corrosion can be well prevented, and the durability is very reliable.
While the present invention has been described in detail with reference to the embodiments, the scope of the present invention should not be limited to the embodiments. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (6)
1. The utility model provides a quick high-strength anchor cable supporting system which characterized in that: the anchor cable comprises an anchor cable body used for a rear grouting section and an anchor cable front end used for a quick anchoring section; a grout blocking piece is arranged at the junction between the anchor cable body and the front end of the anchor cable;
an anti-corrosion sleeve is sleeved on the anchor cable body and extends to the grout blocking piece along the front end direction of the anchor cable; an inner ring grouting channel is formed between the anchor cable body and the anti-corrosion sleeve, and an outer ring grouting channel is formed between the anti-corrosion sleeve and the hole wall of the anchor hole; the inner ring grouting channel and the outer ring grouting channel are communicated through a gap formed between the anti-corrosion sleeve and the slurry blocking piece; a base plate, a ball pad and an anchorage device are arranged at one end of the anchor cable body far away from the front end of the anchor cable; the ball pad is in threaded connection with the anti-corrosion casing pipe, and a grouting pipe communicated with the inner ring grouting channel is arranged on the ball pad; an exhaust pipe communicated with the outer ring grouting channel is inserted in the base plate.
2. The rapid high-strength anchor cable support system according to claim 1, wherein: the front end of the anchor cable adopts an internal supporting mode to realize the expansion head structure of the front-end anchor cable.
3. The rapid high-strength anchor cable support system according to claim 1, wherein: the anti-corrosion sleeve is provided with external threads and is connected with the ball pad in a rotating mode.
4. The rapid high-strength anchor cable support system according to claim 1, wherein: a grouting channel is formed in the ball pad, and the grouting pipe is communicated with the inner ring grouting channel through the grouting channel.
5. The rapid high-strength anchor cable support system according to claim 1, wherein: the backing plate is provided with an exhaust hole, and the exhaust pipe is communicated with the outer ring grouting channel through the exhaust hole.
6. The rapid high-strength anchor cable support system according to claim 1, wherein the anchor cable body is made of medium carbon steel, and the size of the pad plate is 25cm × 25cm × 2 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114915.6U CN210948738U (en) | 2019-11-29 | 2019-11-29 | Quick high-strength anchor cable supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114915.6U CN210948738U (en) | 2019-11-29 | 2019-11-29 | Quick high-strength anchor cable supporting system |
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| Publication Number | Publication Date |
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| CN210948738U true CN210948738U (en) | 2020-07-07 |
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| CN201922114915.6U Active CN210948738U (en) | 2019-11-29 | 2019-11-29 | Quick high-strength anchor cable supporting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761817A (en) * | 2019-11-29 | 2020-02-07 | 西南交通大学 | Rapid high-strength anchor cable support system and method |
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- 2019-11-29 CN CN201922114915.6U patent/CN210948738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761817A (en) * | 2019-11-29 | 2020-02-07 | 西南交通大学 | Rapid high-strength anchor cable support system and method |
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