CN214576913U - Tunnel lateral wall drilling extension mould - Google Patents
Tunnel lateral wall drilling extension mould Download PDFInfo
- Publication number
- CN214576913U CN214576913U CN202120180634.5U CN202120180634U CN214576913U CN 214576913 U CN214576913 U CN 214576913U CN 202120180634 U CN202120180634 U CN 202120180634U CN 214576913 U CN214576913 U CN 214576913U
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- Prior art keywords
- outer die
- inner rod
- die
- side wall
- rod
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 10
- 230000006378 damage Effects 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a tunnel side wall drilling extension die, which comprises an outer die and an inner rod which are concentrically sleeved, wherein the inner rod can axially move along the inner wall of the outer die, two ends of the inner rod both extend out of two ends of the outer die, the inner end of the inner rod is detachably connected with a radial limiting component, and the outer wall of the outer die is connected with a limiting baffle component which can slide towards the inner end of the inner rod in a one-way manner; when the die is installed at a drill hole, the inner rod is radially limited by the clearance fit between the radial limiting component and the wall of the drill hole, the inner end of the outer die is attached to the orifice of the drill hole, and the distance between the limiting baffle component and the orifice of the drill hole is equal to the thickness of a guniting layer. The mode that equipment is installed by repeatedly drilling after guniting covering in the prior art is changed, the extended hole of the original drilled hole is formed in the guniting layer by directly utilizing the die, repeated damage to a roadway caused by re-drilling is thoroughly solved, the waiting time for equipment installation and the capital construction investment cost are greatly reduced, a sufficient construction period is obtained for mine exploitation and mining accurate engineering construction, and a solid equipment guarantee foundation is laid.
Description
Technical Field
The utility model belongs to the roadway support field, concretely relates to tunnel lateral wall drilling extension mould.
Background
Before the mine is formally mined, a series of roadways must be tunneled to enter the explored ore body to form production systems such as transportation, ventilation, drainage, communication and the like. In general, once a roadway is excavated and formed, temporary equipment installation needs to be started so as to meet the requirement of development and quasi-engineering excavation. Therefore, before the support is carried out, a hole is generally drilled in the wall of the roadway, and the drilled hole is used as an auxiliary project for installing the bearing equipment. In order to keep the roadway stable for a long time, support measures are necessary, while a support structure, particularly a guniting support, usually covers the roadway wall, after guniting is completed, a drilled hole is completely plugged, and the drilled hole is not covered by concrete, so that great difficulty is undoubtedly caused to equipment installation, and the traditional method for solving the problem is to abandon the original drilled hole, construct the drilled hole again, and install temporary equipment by using a new drilled hole. The method not only greatly increases the drilling engineering amount and improves the capital construction cost, but also damages the integrity of the roadway, delays the equipment installation period and influences the development and the mining engineering construction. Obviously, the original drilling holes are reserved by adopting a method, the drilling hole space is reserved during guniting support, the original occupied holes are lengthened, and the drilling holes are directly utilized for equipment installation after guniting is finished, so that the method is the key point for solving the problem of repeated drilling construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can avoid the repeated drilling construction of tunnel lateral wall, reduce the tunnel destruction, reduce the tunnel lateral wall drilling extension mould of capital construction time limit for a project and cost, can directly utilize former drilling to carry out equipment fixing after making the whitewashing end.
The utility model provides a tunnel side wall drilling extension mould, which comprises an outer mould and an inner rod which are concentrically sleeved, wherein the inner rod can axially move along the inner wall of the outer mould, two ends of the inner rod both extend out of two ends of the outer mould, the inner end of the inner rod is detachably connected with a radial limiting component, and the outer wall of the outer mould is connected with a limiting baffle component which can unidirectionally slide towards the inner end of the inner rod; when the die is installed at a drill hole, the inner rod is radially limited by the clearance fit between the radial limiting component and the wall of the drill hole, the inner end of the outer die is attached to the orifice of the drill hole, and the distance between the limiting baffle component and the orifice of the drill hole is equal to the thickness of a guniting layer.
In one embodiment of the above technical solution, the inner rod is a cylindrical rod, and the inner end head section thereof is a tapered frustum section; the middle part of the inner rod is axially connected with a plurality of circles of radial supporting rods.
In an embodiment of the above technical solution, the inner rod has an external thread section on the inner side corresponding to the circular truncated cone section.
In an embodiment of the above technical solution, the radial position-limiting member is a cylinder with a central threaded hole, the radial position-limiting member is connected to the external threaded section of the inner rod in a threaded manner, and the diameter of the cylinder is smaller than the diameter of the drilled hole in the side wall of the roadway.
In an embodiment of the above technical solution, the radial support rod includes two end rod bodies connected by a thread.
In an embodiment of the above technical scheme, the inner wall of the outer mold is provided with axial sliding grooves corresponding to the number and positions of each circle of radial support rods, and when the inner rod is sleeved in the outer mold, the outer ends of the radial support rods are respectively inserted into the axial sliding grooves at the corresponding positions, so that the inner rod can axially slide along the inner wall of the outer mold.
In an embodiment of the above technical scheme, the outer wall of the outer die is provided with a plurality of sawtooth strips along the axial direction, the sawtooth shapes of the sawtooth strips are right-angled triangles, two right-angled sides of each right-angled triangle respectively correspond to the axial direction and the radial direction of the outer die, and an included angle between a hypotenuse and a long right-angled side faces the outer end of the outer die.
In an embodiment of the above technical scheme, the limit baffle member includes a circular baffle, a central cylinder and sawtooth strips, the circular baffle has a central circular hole, one end of the central cylinder is welded at the central circular hole of the circular baffle and fixed on the inner wall of the central cylinder, the number and position of the sawtooth strips correspond to those of the sawtooth strips on the outer mold, the sawtooth shapes are the same, but the arrangement direction of the sawtooth strips is opposite to that of the sawtooth strips on the outer mold.
In one embodiment of the above technical scheme, the limiting baffle hook is sleeved at the outer end of the outer die and is spliced with the outer end of the outer die in a sawtooth manner, so that the limiting baffle component can slide towards the inner end of the outer die in a single direction along the outer die.
In an embodiment of the above technical solution, the outer wall of the outer mold is provided with a scale line for directly reading the sliding distance of the limit baffle component along the outer mold.
The utility model discloses an inner pole the inner radial stop component realize the installation location in former drilling, make outer mold the inner hug closely the drilling drill way, realize the extension of drilling through the outer mold, realize the shaping of whitewashing thickness through the limit baffle component of outer mold outer end. When guniting is carried out between the outer die and the limiting baffle component, the outer die is used as a forming die of the extension hole, after guniting solidification, the die is pulled out, the guniting layer forms the extension hole corresponding to the original drilling hole, the equipment can be installed by utilizing the original drilling hole subsequently, and the defects caused by re-drilling and installation of the equipment after guniting are avoided. In addition, the inner end of the inner end can be detachably connected with a radial limiting component, and the inner rod can be used for realizing different drilling holes by replacing the radial limiting component. The mode that the equipment is installed by repeatedly drilling after the guniting covering in the prior art is changed, the extended hole of the original drilled hole is formed in the guniting layer by directly utilizing the mould, the repeated damage to the roadway caused by re-drilling in the prior art is thoroughly solved, the waiting time and the capital construction investment cost of equipment installation are greatly reduced, and a sufficient construction period is won for mine exploitation and mining engineering construction, so that a solid equipment guarantee foundation is laid.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic view from the right in fig. 1 (not shown as a sawtooth rack).
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Fig. 4 is an enlarged schematic view of a portion B in fig. 2.
Detailed Description
As shown in fig. 1, the embodiment discloses a roadway side wall drilling and extending mold, which comprises an outer mold 1, an inner rod 2, a radial support rod 3, a radial limiting component 4, an outer mold sawtooth rack 5 and a limiting baffle component 6.
The outer mold 1 is a rigid hollow cylinder, and the inner diameter of the outer mold is the same as the hole diameter of the drilled hole in the side wall of the roadway.
The inner rod 2 is a solid cylindrical rod, the length of the inner rod is larger than that of the outer die, a plurality of circles of radial support rods 3 are welded at the middle part of the inner rod, the end head section of the inner end is a gradually reduced circular truncated cone section, and an external thread section is arranged on the inner side of the circular truncated cone section.
Radial stop member 4 is the cylinder that has central screw hole, and threaded connection is in the external screw thread section of interior pole 2, and the diameter of cylinder slightly is less than the drilling diameter of tunnel lateral wall to can close clearance fit be accurate between messenger's cylinder and the drilling inner wall specifically.
The inner wall of the outer die 1 is provided with axial sliding grooves corresponding to the number and the positions of each circle of radial support rods 3 on the outer wall of the inner rod 2, so that the inner rod 2 can slide axially along the inner wall of the outer die 1 when concentrically sleeved in the outer die 1.
The radial support rod 3 is formed by connecting two rod bodies through threads so as to adjust the total length of the radial support rod, and the die is suitable for drilling installation with different diameters.
A plurality of outer mold sawtooth strips 5 are axially fixed on the outer wall of the outer mold 1, sawtooth shapes on the outer mold sawtooth strips 5 are right-angled triangles, two right-angled edges of each sawtooth respectively extend along the axial direction and the radial direction of the outer mold 1, and an included angle between each inclined edge and the long edge of each right angle faces the outer end of the outer mold.
The limiting baffle plate component 6 comprises a circular baffle plate 61, a central cylinder 62 and limiting sawtooth strips 63, wherein the circular baffle plate 61 is provided with a central circular hole, one end of the central cylinder 62 is welded at the central circular hole of the circular baffle plate, the number and the positions of the limiting sawtooth strips 63 correspond to those of the outer die sawtooth strips 5, but the arrangement direction of sawteeth on the limiting sawtooth strips is opposite to that of sawteeth on the outer die sawtooth strips 5.
When the limiting baffle plate component 6 is assembled with the outer die, the limiting baffle plate component is sleeved at the outer end of the outer die 1, the limiting baffle plate component and the outer die are spliced in a sawtooth mode, and then the limiting baffle plate component slides to a corresponding position along the outer die towards the inner end of the outer die according to the set thickness of the guniting layer.
In order to facilitate direct reading of the sliding length of the limiting baffle member 6 along the outer die 1, scale marks can be arranged on the outer wall of the outer die.
When the die is installed at a drilling hole in the side wall of a roadway, the inner end of the outer die 1 is tightly attached to the drilling hole opening, then the inner rod is pushed into the drilling hole along the inner wall of the outer die 1, and the inner end of the inner rod is inserted into the drilling hole and is radially positioned through the radial limiting component 4.
And then sliding the limiting baffle plate member 6 along the outer die 1 towards the side wall of the roadway according to the thickness of the guniting layer, so that the distance between the circular baffle plate 61 and the side wall of the roadway is the set guniting layer thickness. The saw teeth on the outer die and the limiting baffle plate component are arranged in opposite directions, so that the limiting baffle plate component can only slide towards the inner end of the outer die in a one-way mode but not towards the outer end of the outer die, and the limiting baffle plate component can bear the guniting pressure and can be used as a forming die of a drilling extending hole together with the outer die.
After the guniting layer is solidified, the die is pulled out, and then the extension hole corresponding to the drilled hole can be reserved on the guniting layer, so that the original drilled hole can be directly utilized without re-drilling during subsequent equipment installation.
When the die is used for drilling holes with different apertures, the inner rod and the radial supporting rod can be repeatedly used, and the outer die, the radial limiting component and the limiting baffle component with corresponding sizes only need to be replaced because the length of the radial supporting rod is adjustable.
Claims (10)
1. The utility model provides a tunnel lateral wall drilling extension mould which characterized in that: the inner rod can move axially along the inner wall of the outer die, two ends of the inner rod extend out of two ends of the outer die, the inner end of the inner rod is detachably connected with a radial limiting component, and the outer wall of the outer die is connected with a limiting baffle component capable of sliding towards the inner end of the inner rod in a one-way manner; when the die is installed at a drill hole, the inner rod is radially limited by the clearance fit between the radial limiting component and the wall of the drill hole, the inner end of the outer die is attached to the orifice of the drill hole, and the distance between the limiting baffle component and the orifice of the drill hole is equal to the thickness of a guniting layer.
2. The roadway side wall drilling extension mold of claim 1, wherein: the inner rod is a cylindrical rod, and the end head section of the inner end of the inner rod is a gradually reduced circular table section; the middle part of the inner rod is axially connected with a plurality of circles of radial supporting rods.
3. The roadway side wall drilling extension mold of claim 2, wherein: and the inner side of the inner rod corresponding to the circular truncated cone section is provided with an external thread section.
4. The roadway side wall drilling extension mold of claim 2, wherein: the radial limiting component is a cylinder with a central threaded hole, the radial limiting component is in threaded connection with the outer threaded section of the inner rod, and the diameter of the cylinder is smaller than the diameter of a drilled hole in the side wall of the roadway.
5. The roadway side wall drilling extension mold of claim 2, wherein: the radial support rod comprises two end rod bodies connected through threads.
6. The roadway side wall drilling extension mold of claim 2, wherein: the inner rod is sleeved in the outer die, the outer ends of the radial support rods are respectively inserted into the axial sliding grooves at the corresponding positions, and the inner rod can axially slide along the inner wall of the outer die.
7. The roadway side wall drilling extension mold of claim 1, wherein: the outer wall of the outer die is axially provided with a plurality of sawtooth strips, the sawtooth shapes of the sawtooth strips are right-angled triangles, two right-angled sides of each right-angled triangle respectively correspond to the axial direction and the radial direction of the outer die, and an included angle between each inclined side and the long side of each right angle faces the outer end of the outer die.
8. The roadway side wall drilling extension mold of claim 7, wherein: the limiting baffle component comprises a circular baffle, a central cylinder and sawtooth strips, the circular baffle is provided with a central round hole, one end of the central cylinder is welded at the central round hole of the circular baffle and is fixed on the inner wall of the central cylinder, the number and the positions of the sawtooth strips correspond to those of the sawtooth strips on the outer die, the sawtooth shapes are the same, but the arrangement directions of the sawtooth strips are opposite to those of the sawtooth strips on the outer die.
9. The roadway side wall drilling extension mold of claim 8, wherein: the limiting baffle hook is sleeved at the outer end of the outer die and spliced with the outer end of the outer die in a sawtooth manner, so that the limiting baffle component can slide in one direction towards the inner end of the outer die along the outer die.
10. The roadway side wall drilling extension mold of claim 1, wherein: and the outer wall of the outer die is provided with scale marks which are convenient for directly reading the sliding distance of the limiting baffle component along the outer die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120180634.5U CN214576913U (en) | 2021-01-22 | 2021-01-22 | Tunnel lateral wall drilling extension mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120180634.5U CN214576913U (en) | 2021-01-22 | 2021-01-22 | Tunnel lateral wall drilling extension mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214576913U true CN214576913U (en) | 2021-11-02 |
Family
ID=78369801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120180634.5U Expired - Fee Related CN214576913U (en) | 2021-01-22 | 2021-01-22 | Tunnel lateral wall drilling extension mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214576913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323893A (en) * | 2021-12-09 | 2022-04-12 | 中国人民解放军军事科学院国防工程研究院 | Sand hollow cylinder sample preparation instrument with inclined deposition surface |
-
2021
- 2021-01-22 CN CN202120180634.5U patent/CN214576913U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323893A (en) * | 2021-12-09 | 2022-04-12 | 中国人民解放军军事科学院国防工程研究院 | Sand hollow cylinder sample preparation instrument with inclined deposition surface |
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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 |
Granted publication date: 20211102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |