CN210768819U - Positioning device for small guide pipe for advanced grouting - Google Patents
Positioning device for small guide pipe for advanced grouting Download PDFInfo
- Publication number
- CN210768819U CN210768819U CN201921674242.3U CN201921674242U CN210768819U CN 210768819 U CN210768819 U CN 210768819U CN 201921674242 U CN201921674242 U CN 201921674242U CN 210768819 U CN210768819 U CN 210768819U
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- CN
- China
- Prior art keywords
- pipe
- steel pipe
- advanced grouting
- small
- inclined steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a positioning device for a small advanced grouting conduit, which comprises an inclined steel pipe, wherein one side end surface of the inclined steel pipe is cut into an inclined plane; the other end face of the inclined steel pipe is kept unchanged, the most pointed end of the inclined steel pipe is welded at the position close to the outer edge of the section steel frame, and the advanced grouting small guide pipe is inserted into the inclined steel pipe; the utility model discloses the device is simple, and the operation is simple and easy, is fit for the job site and uses, can effectively, realize the control to the little pipe of the advance slip casting in tunnel fast, has solved the difficulty of on-the-spot angle control, can make the little pipe of the advance slip casting produce biggest atress effect and slip casting effect, guarantees tunnel construction safety.
Description
Technical Field
The utility model relates to a civil construction technical field specifically is a positioner of little pipe of advance slip casting.
Background
The small pipe for advanced grouting is a technological process in the tunneling construction process of tunnel engineering and is mainly used for the pre-support of weak broken zones, shallow buried sections, cave entrance bias sections, sand layer sections, sand gravel sections and fault broken zone sections with short self-stabilizing time. The small guide pipe for advanced grouting is a very effective auxiliary construction method for stabilizing the excavation working face. The small guide pipe for the advanced grouting has a reinforcing effect on a loose rock stratum, the surrounding rock behind the face is driven into the small guide pipe at the rear part of the face at a certain external insertion angle, the small guide pipe in the front part of the face and the small guide pipe at the rear part form a beam structure, and the small guide pipe form a shell-shaped structure surrounding the contour of the tunnel, so that the loosening and collapse of the surrounding rock can be effectively inhibited. And the stability of loose and weak surrounding rocks is enhanced after the small guide pipe is grouted in advance, so that the surrounding rocks are stabilized within the time of completing excavation and primary support, and the surrounding rocks are not damaged or collapsed due to instability. The advanced grouting small conduit construction is a pre-support measure for ensuring the construction safety and effectiveness.
When the small advanced conduit is positioned and constructed on site, due to the fact that the site angle control is often large in randomness, the angle range of design requirements is difficult to achieve, on one hand, the stress of the shell-shaped structure of the small advanced grouting conduit is weakened, on the other hand, grout cannot be injected into a specified surrounding rock part, and the grouting effect is weakened or even is suitable for the contrary.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a positioner of little pipe of advance slip casting to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a positioning device for a small guide pipe for advanced grouting comprises an inclined steel pipe, wherein one side end face of the inclined steel pipe is cut into an inclined plane; the other end face of the inclined steel pipe is kept unchanged, the most pointed end of the inclined steel pipe is welded at the position close to the outer edge of the section steel frame, and the advanced grouting small guide pipe is inserted into the inclined steel pipe.
As a further aspect of the present invention: the cutting angle of the inclined plane is consistent with the external insertion angle of the small advanced grouting guide pipe in the design.
As a further aspect of the present invention: the inner diameter of the inclined steel pipe is slightly larger than the outer diameter of the small advanced grouting guide pipe.
As a further aspect of the present invention: one end of the inclined plane of the inclined steel pipe is welded on a hole drilled by the steel frame advanced grouting small guide pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the device is simple, and the operation is simple and easy, is fit for the job site and uses, can effectively, realize the control to the little pipe of the advance slip casting in tunnel fast, has solved the difficulty of on-the-spot angle control, can make the little pipe of the advance slip casting produce biggest atress effect and slip casting effect, guarantees tunnel construction safety.
Drawings
Fig. 1 is a schematic structural diagram of a positioning device for a small pipe with advanced grouting.
Fig. 2 is a partial structure schematic diagram of a positioning device for a small pipe with advanced grouting after installation.
Fig. 3 is a schematic diagram of the overall structure of the positioning device for the advanced grouting small conduit after installation.
In the figure, 1 is an inclined steel pipe, 2 is a small advanced grouting pipe, and 3 is a steel frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1-3, in an embodiment of the present invention, an advanced grouting small duct positioning device includes an inclined steel tube 1 welded to a steel frame 3, an inclined angle of the inclined steel tube 1 is an external inserting angle of an advanced grouting small duct 2 required in a design drawing, an inclined end of the inclined steel tube 1 is welded to the steel frame 3, and a tip of the inclined end is welded to a position closest to an external aid of the steel frame 3.
As shown in figure 1, the inclined steel tube 1 is welded at the steel frame 3 with a drilled aperture, and the aperture size is consistent with the inner diameter size of the inclined steel tube 1.
As shown in fig. 2, a drill rod is inserted into the slope steel pipe to drill, and the drilling angle is controlled by the slope steel pipe 1. And (3) installing the advanced grouting small guide pipe 2 on the surrounding rock through the inclined steel pipe 1, and welding the advanced grouting small guide pipe 2 at the round surface of the inclined steel pipe 1.
As shown in figure 3, a better bearing system can be formed after the positioning device is adopted to drive the small pre-grouting conduit 2.
Firstly, the driving angle of the advanced grouting small guide pipe 2 is ensured through a positioning device; secondly, the grouting effect is prevented from being weakened due to the angle error; thirdly, the connection between the steel frame 3 and the small advanced grouting conduit 2 is strengthened, and the bearing capacity of the steel frame is enhanced to a certain extent.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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 (4)
1. The positioning device for the small guide pipe for advanced grouting is characterized by comprising an inclined steel pipe (1), wherein one side end face of the inclined steel pipe (1) is cut into an inclined plane; the other end face of the inclined steel pipe (1) is kept unchanged, the most pointed end of the inclined steel pipe (1) is welded at the position close to the outer edge of the section steel frame (3), and the advanced grouting small guide pipe (2) is inserted into the inclined steel pipe (1).
2. The positioning device for the advanced grouting small pipe as claimed in claim 1, wherein the bevel cutting angle is consistent with the extrapolation angle of the advanced grouting small pipe (2) in design.
3. The positioning device for the small pipe for advanced grouting according to claim 1, characterized in that the inner diameter of the inclined steel pipe (1) is slightly larger than the outer diameter of the small pipe for advanced grouting (2).
4. The positioning device for the small pipe for advanced grouting according to claim 1, wherein one end of the inclined surface of the inclined steel pipe (1) is welded on a hole drilled in the small pipe for advanced grouting of the steel frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674242.3U CN210768819U (en) | 2019-10-09 | 2019-10-09 | Positioning device for small guide pipe for advanced grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674242.3U CN210768819U (en) | 2019-10-09 | 2019-10-09 | Positioning device for small guide pipe for advanced grouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768819U true CN210768819U (en) | 2020-06-16 |
Family
ID=71039753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921674242.3U Expired - Fee Related CN210768819U (en) | 2019-10-09 | 2019-10-09 | Positioning device for small guide pipe for advanced grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210768819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847038A (en) * | 2021-09-18 | 2021-12-28 | 中电建铁路建设投资集团有限公司 | Single-row steel pipe advanced grouting reinforcement method |
-
2019
- 2019-10-09 CN CN201921674242.3U patent/CN210768819U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847038A (en) * | 2021-09-18 | 2021-12-28 | 中电建铁路建设投资集团有限公司 | Single-row steel pipe advanced grouting reinforcement method |
| CN113847038B (en) * | 2021-09-18 | 2024-04-02 | 中电建铁路建设投资集团有限公司 | Single-row steel pipe advanced grouting reinforcement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 |