CN202900284U - U-shaped shred capable of wall back filling - Google Patents
U-shaped shred capable of wall back filling Download PDFInfo
- Publication number
- CN202900284U CN202900284U CN 201220574523 CN201220574523U CN202900284U CN 202900284 U CN202900284 U CN 202900284U CN 201220574523 CN201220574523 CN 201220574523 CN 201220574523 U CN201220574523 U CN 201220574523U CN 202900284 U CN202900284 U CN 202900284U
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- Prior art keywords
- shaped
- shred
- shaped shred
- grouting
- canopy
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- Expired - Fee Related
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a U-shaped shred capable of wall back filling and belongs to the field of downhole support. The U-shaped shred comprises a U-shaped shred body. A grouting hole is reserved at a shred leg of the U-shaped shred. A grouting pipe is welded on the outer side of the grouting hole. The inner diameter of the grouting pipe is the same as the diameter of the grouting hole. Grouting filling of wall back cavities is performed by the aid of the reserved grouting pipe, so that linear contact of the U-shaped shred with the surrounding rock surface is changed into surface contact, support areas is increased by more than 5 times, the U-shaped shred can be stressed more timely and evenly, the support capacity is increased by more than 3 times, point damage caused by uneven stress at a certain position of the U-shaped shred is avoided, structural section of the U-shaped shred is increased relatively, and bending resistance and shear resistance rigidity of the U-shaped shred are increased evidently, overall support performance of the U-shaped shred is given to full play to the maximum extent, and long-term stability of crushing soft rock tunnels is guaranteed.
Description
Technical field
The utility model relates to a kind of U-shaped canopy that can support with backfilling, belongs to the mine support field.Be particularly useful for the mine working surrounding rock supporting, also be applicable to the rock mass engineering project that other need supporting.
Background technology
The supporting in broken soft rock tunnel is one of difficult problem of puzzlement coal mine underground exploitation always, because roadway surrounding rock is loose crushing extremely, anchor pole, anchor cable anchor are poor, are difficult to roadway surrounding rock is carried out effective support, be recessive supporting, so that the safety of roadway support reduces greatly in addition.For this type of tunnel, the U-shaped canopy supporting of many uses in the practice.But because the tunnel surface irregularity, traditional U-shaped canopy is difficult to be adjacent to scar, causes U-shaped canopy discontinuity, and easily origination point destroys, and then causes the integral body of U-shaped canopy to destroy, so that the supporting performance of U-shaped canopy can not be brought into play well.The method of improving U-shaped canopy stress performance at present only has T-shaped thickness of pipe wall filling technique, this kind method is the T-shaped pipe of the pre-buried slip casting in wire lath back between U-shaped canopy canopy and canopy, after whitewashing in the surface, tunnel, surface, tunnel country rock is carried out grouting and reinforcing, near can the U-shaped canopy of filling in the country rock crack, can improve to a certain extent the shortcoming of U-shaped canopy passive protecting, make it in time stressed.But since T-shaped pipe from U-shaped canopy away from, the crack between the surface whitewashing U-shaped canopy of easy shutoff and roadway surrounding rock surface causes T-shaped thickness of pipe wall filling can not be full of the cavity of U-shaped canopy back in addition, U-shaped canopy integer support performance still can not be brought into play fully.U-shaped canopy supporting, labour intensity is very big, particularly U-shaped canopy by after damaging by pressure change canopy, cover canopy work is extremely loaded down with trivial details, speed of application is slow, has a strong impact on the normal use in tunnel.
Summary of the invention
In view of the deficiency that prior art exists, the purpose of this utility model provide a kind of stressed evenly, anti-bending strength is good, rigidity is large, a kind of U-shaped canopy that can support with backfilling of easy construction.
The utility model solves the used technical scheme of its technical problem: a kind of U-shaped canopy that can support with backfilling, comprise U-shaped canopy, and have an injected hole at the canopy leg place of U-shaped canopy, in injected hole outside welding one Grouting Pipe, the Grouting Pipe internal diameter is identical with the injected hole diameter.
During use, first this U-shaped frame is located at the roadway surrounding rock surface that to carry out supporting, the surface whitewashing is carried out in the tunnel, sealed slit and this U-shaped canopy interface slit between this U-shaped canopy and roadway surrounding rock surface, then utilize Grouting Pipe that the cavity between this U-shaped canopy and roadway surrounding rock surface is carried out slip casting.
This U-shaped canopy by utilize stay specially the Grouting Pipe of establishing to wall after cavity carry out grouting filling, U-shaped canopy is contacted with line between the roadway surrounding rock surface becomes the face contact, the supporting area increases more than 5 times; Make U-shaped canopy can be more in time, stressed equably, supporting performance increases more than 3 times.
The beneficial effects of the utility model are: avoided U-shaped canopy because the inhomogeneous stressed and origination point in somewhere destroys; Relatively increase U-shaped booth structure section, itself bending resistance, shear stiffness are obviously risen.Bring into play to greatest extent U-shaped canopy integer support performance, guarantee the long-term stability in broken soft rock tunnel.
Description of drawings
Fig. 1 is profile of the present utility model.
Fig. 2 is U-shaped canopy working drawing of the present utility model.
Fig. 3 is the construction sectional drawing of the U-shaped canopy of the utility model.
Among the figure: 1-U type canopy, 2-Grouting Pipe, 3-roadway surrounding rock, slit between 4-U type canopy and country rock, 5-grouting behind shaft or drift lining slurries, 6-U type canopy interface, 7-tunnel.
The specific embodiment
Below in conjunction with accompanying drawing enforcement of the present utility model is further described
As shown in Figure 1, U-shaped canopy that can support with backfilling stays at the canopy leg place of U-shaped canopy 1 and to establish an injected hole, the diameter 20mm of injected hole.In the outside, hole welding one Grouting Pipe 2, slip casting pipe range 150mm, wall thickness 1.8mm, the Grouting Pipe internal diameter is identical with the injected hole diameter.
As shown in Figures 2 and 3, during use, first U-shaped canopy 1 is erected at 3 places, 7 country rocks surface, tunnel that need to carry out supporting, the surface whitewashing is carried out in the tunnel, seal slit 4 between U-shaped canopy 1 and roadway surrounding rock surface and the slit 6 of U-shaped canopy interface, the Grouting Pipe 2 of then utilizing this U-shaped canopy canopy 1 canopy leg to stay to establish is carried out slip casting 5 to the cavity on 3 on this U-shaped canopy 1 and roadway surrounding rock surface.
Claims (3)
- One kind can support with backfilling U-shaped canopy, comprise U-shaped canopy (1), it is characterized in that: the canopy leg place at U-shaped canopy has an injected hole, in injected hole outside welding one Grouting Pipe (2), the Grouting Pipe internal diameter is identical with the injected hole diameter.
- 2. U-shaped canopy that can support with backfilling according to claim 1 is characterized in that: the diameter 20mm of described injected hole.
- 3. U-shaped canopy that can support with backfilling according to claim 1 is characterized in that: the length 150mm of described Grouting Pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574523 CN202900284U (en) | 2012-11-02 | 2012-11-02 | U-shaped shred capable of wall back filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574523 CN202900284U (en) | 2012-11-02 | 2012-11-02 | U-shaped shred capable of wall back filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900284U true CN202900284U (en) | 2013-04-24 |
Family
ID=48120967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220574523 Expired - Fee Related CN202900284U (en) | 2012-11-02 | 2012-11-02 | U-shaped shred capable of wall back filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926766A (en) * | 2012-11-02 | 2013-02-13 | 上海大屯能源股份有限公司 | Backfilling U-shaped shed |
-
2012
- 2012-11-02 CN CN 201220574523 patent/CN202900284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926766A (en) * | 2012-11-02 | 2013-02-13 | 上海大屯能源股份有限公司 | Backfilling U-shaped shed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20141102 |
|
| EXPY | Termination of patent right or utility model |