CN216617533U - Supporting construction in old and useless mine tunnel - Google Patents
Supporting construction in old and useless mine tunnel Download PDFInfo
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- CN216617533U CN216617533U CN202123009171.5U CN202123009171U CN216617533U CN 216617533 U CN216617533 U CN 216617533U CN 202123009171 U CN202123009171 U CN 202123009171U CN 216617533 U CN216617533 U CN 216617533U
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Abstract
The application relates to the technical field of mine roadway support, in particular to a support structure of a waste mine roadway, which comprises a reinforced concrete layer, a deformation joint, a grouting anchor rod and a grouting layer; the reinforced concrete layer is positioned on the inner side of the original support of the waste roadway to bear the cyclic internal pressure and provide the support force and is used as a grout stop layer during grouting; the deformation joint is positioned on the reinforced concrete layer, and the internal steel bars of the reinforced concrete layer are not damaged, so that the adaptability of the reinforced concrete layer to deformation is improved; the grouting anchor rod is positioned on the reinforced concrete layer so as to realize grouting of the original support and surrounding rock; the grouting layer is positioned outside the reinforced concrete layer to improve the bearing capacity of the surrounding rock and the integrity of the surrounding rock, the original support and the existing support.
Description
Technical Field
The utility model relates to the technical field of mine roadway support, in particular to a support structure of a waste mine roadway.
Background
Coal mines in China are mainly underground mining, a large number of roadways need to be excavated underground, and roadway support is adopted to keep the roadways smooth and surrounding rocks stable, so that the method has important significance for coal mine construction and production. The basic purpose of supporting the roadway is to alleviate and reduce the movement of surrounding rocks, so that the section of the roadway is not excessively reduced, and meanwhile, the scattered and damaged surrounding rocks are prevented from falling. The supporting mode for the roadway comprises bricklaying supporting, anchor rod supporting, anchor spraying supporting, anchor net spraying supporting, anchor rope supporting, metal arch support supporting, stone supporting, reinforced concrete supporting and the combination supporting among various types of supporting.
However, at present, no roadway support design for the existing abandoned roadway exists, and the support scheme cannot meet the support requirements of the abandoned mine roadway.
SUMMERY OF THE UTILITY MODEL
In order to solve the supporting problem of the waste mine tunnel, the utility model designs a supporting structure of the waste mine tunnel, which comprises a reinforced concrete layer, a deformation joint, a grouting anchor rod and a grouting layer; wherein:
the reinforced concrete layer is positioned on the inner side of the original support of the waste roadway to bear the cyclic internal pressure and provide the support force and is used as a grout stop layer during grouting;
the deformation joint is positioned on the reinforced concrete layer, and the internal steel bars of the reinforced concrete layer are not damaged, so that the adaptability of the reinforced concrete layer to deformation is improved;
the grouting anchor rod is positioned on the reinforced concrete layer so as to realize grouting of the original support and surrounding rock;
the grouting layer is positioned outside the reinforced concrete layer to improve the bearing capacity of the surrounding rock and the integrity of the surrounding rock, the original support and the existing support.
Preferably, the width of the deformation joint is about 3-8 cm.
Preferably, the reinforced concrete layer has a thickness of about 20-45 cm.
The utility model has the following technical effects:
1. the high-performance anti-permeability cast concrete layer has better anti-permeability performance, can bear cyclic internal pressure loading and has higher bearing capacity.
2. The deformation joint can bear larger deformation and has higher strength.
3. The grouting layer can enable the surrounding rock, the original support and the existing support to form a whole, the functions of the surrounding rock and the original support can be fully exerted, the surrounding rock and the original support and the existing support form a unified whole, and the bearing capacity and the durability of the whole support structure are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic view of a supporting structure of a waste mine roadway.
In the figure:
1-reinforced concrete layer, 2-deformation joint, 3-grouting anchor rod and 4-grouting layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
The utility model provides a supporting construction in old and useless mine tunnel, includes reinforced concrete layer 1, movement joint 2, slip casting stock 3, slip casting layer 4. The reinforced concrete layer 1 is positioned on the inner side of the original support of the waste roadway, has the thickness of about 20-45cm, bears the cyclic internal pressure, provides the support force and is used as a grout stop layer during grouting; the deformation joint 2 is positioned in the reinforced concrete layer 1, the width of the joint is about 3-8cm, and the internal steel bars of the reinforced concrete layer 1 are not damaged, so that the adaptability of the reinforced concrete layer 1 to deformation is improved; the grouting anchor rod 3 is positioned on the reinforced concrete layer 1 so as to realize grouting of the original support and surrounding rock; the grouting layer 4 is positioned outside the reinforced concrete layer 1 to improve the bearing capacity of the surrounding rock and the integrity of the surrounding rock, the original support and the existing support.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 (3)
1. The utility model provides a supporting construction in old and useless mine tunnel which characterized in that: the grouting anchor rod comprises a reinforced concrete layer, a deformation joint, a grouting anchor rod and a grouting layer; wherein:
the reinforced concrete layer is positioned on the inner side of the original support of the waste roadway to bear the cyclic internal pressure and provide the support force and is used as a grout stop layer during grouting;
the deformation joint is positioned on the reinforced concrete layer, and the internal steel bars of the reinforced concrete layer are not damaged, so that the adaptability of the reinforced concrete layer to deformation is improved;
the grouting anchor rod is positioned on the reinforced concrete layer so as to realize grouting of the original support and surrounding rock;
the grouting layer is positioned outside the reinforced concrete layer to improve the bearing capacity of the surrounding rock and the integrity of the surrounding rock, the original support and the existing support.
2. The supporting structure of a used mine roadway according to claim 1, wherein the width of the deformation joint is about 3-8 cm.
3. The supporting structure of a used mine roadway according to claim 1, wherein the thickness of the reinforced concrete layer is about 20-45 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123009171.5U CN216617533U (en) | 2021-12-01 | 2021-12-01 | Supporting construction in old and useless mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123009171.5U CN216617533U (en) | 2021-12-01 | 2021-12-01 | Supporting construction in old and useless mine tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617533U true CN216617533U (en) | 2022-05-27 |
Family
ID=81700987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123009171.5U Active CN216617533U (en) | 2021-12-01 | 2021-12-01 | Supporting construction in old and useless mine tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617533U (en) |
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2021
- 2021-12-01 CN CN202123009171.5U patent/CN216617533U/en active Active
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