CN214331560U - Valve body capable of realizing annular grouting and centering support function - Google Patents
Valve body capable of realizing annular grouting and centering support function Download PDFInfo
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- CN214331560U CN214331560U CN202022406908.6U CN202022406908U CN214331560U CN 214331560 U CN214331560 U CN 214331560U CN 202022406908 U CN202022406908 U CN 202022406908U CN 214331560 U CN214331560 U CN 214331560U
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Abstract
The utility model discloses a can realize that annular mud jacking has valve body of centering support function concurrently belongs to basic engineering construction technical field. The valve body comprises a valve body, wherein an annular grouting channel is formed in the valve body; the center of the valve body is provided with a secondary grouting inlet hole and a middle grouting pipe hole; the edge of the valve body is provided with an anchor cable arc-shaped side groove and a secondary slurry outlet hole; the secondary slurry outlet hole is communicated with the slurry injection channel and extends to the outside of the edge of the valve body. The utility model has the advantages that the grouting channel is arranged in the valve body, the wrapping force of primary grouting is broken through, and the efficiency of secondary grouting is improved; meanwhile, the edge of the valve body is provided with an anchor cable arc-shaped side groove and a steel strand arrangement hole, and the anchor cable arc-shaped side groove and the steel strand arrangement hole serve as a supporting effect of the anchor cable bundle in the hole, so that the pulling resistance of the anchor rod is improved, and the construction quality of the anchor rod is guaranteed.
Description
Technical Field
The utility model relates to a foundation engineering construction technical field, concretely relates to can realize that annular mud jacking has valve body of centering support function concurrently.
Background
The anchor rod grouting construction operation is mainly applied to foundation pit support, slope protection, underground engineering advanced support and the like. As an important branch in the field of geotechnical engineering, the anchor rod anchoring technology is always a research hotspot, anchor rod grouting reinforcement is the most key technical link in the anchor rod anchoring technology, secondary grouting quality of an anchor rod is a key process for determining the quality of the anchor rod, and however, secondary grouting construction of the anchor rod is always lack of mature and efficient process technology in actual engineering projects.
At present, the secondary grouting of the anchor rod is carried out when the strength of a cement bonded rock body formed by primary grouting reaches 5.0MPa (2-3 h), and the grouting pressure is 0.5-1.5 MPa and reaches 2.0MPa at most.
When traditional secondary slip casting passageway, receive the constraint of a slip casting confined power, the effective degree of slip casting is restricted.
The prior anchor rod construction process has the disadvantages that:
(1) in the construction process, if the time interval between primary grouting and secondary grouting is longer, and the strength of an anchoring body formed by the primary grouting is higher, the grouting surrounding force is increased during the secondary grouting, and a grouting hole is not easy to open, so that the secondary grouting is ineffective;
(2) during secondary grouting, due to the fact that grouting pressure is high, grout can randomly open a grout outlet along the position with the minimum resistance according to factors such as surrounding stratum conditions, the strength of an anchoring body and the length of a grouting path, fixed-point directional grouting of a certain stratum in an anchoring section cannot be achieved, and secondary grouting quality is affected.
(3) After conventional secondary grouting, under the influence of the strength of an anchoring body and the space of an anchor hole, grouting cannot be performed again, and if the quality of an anchor rod cannot meet the design requirement, the anchor rod is required to be repaired frequently, so that time and labor are wasted.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a can be used to secondary slip casting and improve secondary slip casting efficiency, still have the valve body of centering support function.
In order to achieve the above purpose, the present invention is realized by the following technical solutions:
a valve body capable of realizing annular grouting and a centering support function comprises a valve body, wherein an annular grouting channel is formed in the valve body; the center of the valve body is provided with a secondary grouting inlet hole and a middle grouting pipe hole; the edge of the valve body is provided with an anchor cable arc-shaped side groove and a secondary slurry outlet hole; and the secondary slurry outlet hole is communicated with the slurry injection channel and extends to the outside of the edge of the valve body.
Furthermore, the number of the secondary slurry outlet holes is at least three, and the secondary slurry outlet holes are uniformly distributed on the edge of the valve body along the circumference.
Furthermore, the anchor cable arc-shaped side grooves are multiple and are uniformly distributed on the edge of the valve body along the circumference.
Further, the secondary grouting inlet is externally connected with a secondary grouting pipe, and a thread is arranged in the secondary grouting inlet; and the secondary grouting inlet hole is in threaded connection with the secondary grouting pipe.
Furthermore, a plurality of steel strand arranging holes convenient for anchor cables to penetrate are formed in the outer edge of the valve body.
Furthermore, the aperture of the secondary slurry outlet hole is not larger than that of the middle grouting pipe hole.
The utility model discloses can realize that annular mud jacking has the valve body of centering support function concurrently, its beneficial effect lies in:
(1) the utility model has the advantages that the grouting channel is arranged in the valve body, the wrapping force of primary grouting is broken through, and the efficiency of secondary grouting is improved; meanwhile, the edge of the valve body is provided with an anchor cable arc-shaped side groove and a steel strand arrangement hole, and the anchor cable arc-shaped side groove and the steel strand arrangement hole serve as a supporting effect of the anchor cable bundle in the hole, so that the pulling resistance of the anchor rod is improved, and the construction quality of the anchor rod is guaranteed.
(2) The secondary grout outlet holes are distributed along the edge circumference of the valve body, grouting is expanded outwards on a grouting radiation surface, the flowing resistance of grout is reduced, the position and the direction of secondary grouting are determined, after secondary grouting, the local reaming resistance increasing effect is exerted, and the construction quality and safety are guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural plan view of the valve body of the present invention;
fig. 2 is a sectional view of the valve body of the present invention;
1-grouting a channel; 2-secondary grouting into the hole; 3-secondary slurry outlet; 4-anchor cable arc side groove; 5-middle grouting pipe hole, 6 valve body.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
Example 1
A valve body capable of realizing annular grouting and a centering support function comprises a valve body 6, and an annular grouting channel 1 is arranged in the valve body 6, as shown in figures 1 and 2; the center of the valve body 6 is provided with a secondary grouting hole 2 and a middle grouting pipe hole 5; the edge of the valve body 6 is provided with an anchor cable arc-shaped side groove 4 and a secondary slurry outlet hole 3; the secondary slurry outlet hole 3 is communicated with the slurry injection channel 1 and extends to the outside of the edge of the valve body 6.
The utility model discloses in, secondary grout outlet 3 is three and preferred three at least, and is in 6 edges along circumference evenly distributed of valve body, slip casting flow in annular slip casting passageway 1 to from 3 radiation grout outlets in three secondary grout outlet, form annular radiation slip casting, the slip casting obtains expanding outward on the slip casting radiant surface, and local reaming resistance-increasing effect of performance has improved the efficiency of secondary slip casting.
In the utility model, the secondary grouting hole 2 is externally connected with a secondary grouting pipe, and a thread is arranged in the secondary grouting hole 2; and the secondary grouting inlet hole 2 is in threaded connection with a secondary grouting pipe. The valve body grouting channel 1 is an annular inner space, and slurry is allowed to enter from the secondary grouting hole 2 and then is discharged from the secondary slurry outlet hole 3; and the secondary slurry outlet hole 3 is positioned in the radius of the valve body and communicated with the annular grouting channel 1, so that the slurry in the cavity can be injected in an outward radiation manner.
In the utility model, a plurality of anchor cable arc-shaped side grooves 4 are uniformly distributed along the circumference at the edge of the valve body 6; the outer edge of the valve body 6 is provided with a plurality of steel strand arranging holes for anchor cables to penetrate conveniently. The anchor cable arc-shaped side groove 4 is arranged at the position for fixing the anchor cable, so that cross-linking and mutual interference in the anchor cable hole are prevented. The size of the valve body structure depends on the hole-forming aperture of the anchor cable, and the number of the arc-shaped side grooves 4 of the anchor cable and the overall size of the valve body are selected according to the hole-forming aperture of the anchor cable.
The utility model discloses in, the aperture in secondary grout outlet 3 is not more than the aperture of middle part slip casting tube hole 5. The middle grouting pipe hole 5 does not participate in secondary grouting, provides a channel for primary or tertiary grouting, and does not influence the annular structure.
Secondary grouting is conducted in the anchor cable hole, the secondary grouting pipe enters the grouting channel 1 in the valve body 6, and grout flows circularly under the action of pressure and emerges from the secondary grout outlet hole 3 and is solidified with the peripheral soil body to form an anchoring body; meanwhile, the valve body can form a serial structure form through the secondary grouting pipe, and grouting bodies sequentially pass through the valve body along with flowing resistance to perform grouting.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. The utility model provides a can realize that annular mud jacking has valve body of centering support function concurrently which characterized in that: the valve body comprises a valve body, wherein an annular grouting channel is formed in the valve body; the center of the valve body is provided with a secondary grouting inlet hole and a middle grouting pipe hole; the edge of the valve body is provided with an anchor cable arc-shaped side groove and a secondary slurry outlet hole; and the secondary slurry outlet hole is communicated with the slurry injection channel and extends to the outside of the edge of the valve body.
2. The valve body capable of realizing annular grouting and having the function of a centering support according to claim 1 is characterized in that: the secondary slurry outlet holes are at least three and are uniformly distributed on the edge of the valve body along the circumference.
3. The valve body capable of realizing annular grouting and having the function of a centering support according to claim 1 is characterized in that: the anchor cable arc-shaped side grooves are multiple and are uniformly distributed on the edge of the valve body along the circumference.
4. The valve body capable of realizing annular grouting and having the function of a centering support according to claim 1 is characterized in that: the secondary grouting inlet is externally connected with a secondary grouting pipe, and a thread is arranged in the secondary grouting inlet; and the secondary grouting inlet hole is in threaded connection with the secondary grouting pipe.
5. The valve body capable of realizing annular grouting and having the function of a centering support according to claim 1 is characterized in that: the outer edge of the valve body is provided with a plurality of steel strand arranging holes for anchor cables to penetrate conveniently.
6. The valve body capable of realizing annular grouting and having the function of a centering support according to claim 1 is characterized in that: the aperture of the secondary slurry outlet is not larger than that of the middle grouting pipe hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022406908.6U CN214331560U (en) | 2020-10-26 | 2020-10-26 | Valve body capable of realizing annular grouting and centering support function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022406908.6U CN214331560U (en) | 2020-10-26 | 2020-10-26 | Valve body capable of realizing annular grouting and centering support function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214331560U true CN214331560U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022406908.6U Active CN214331560U (en) | 2020-10-26 | 2020-10-26 | Valve body capable of realizing annular grouting and centering support function |
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| Country | Link |
|---|---|
| CN (1) | CN214331560U (en) |
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2020
- 2020-10-26 CN CN202022406908.6U patent/CN214331560U/en active Active
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