CN111220038B - Blast hole blocking device for tunnel blasting - Google Patents
Blast hole blocking device for tunnel blasting Download PDFInfo
- Publication number
- CN111220038B CN111220038B CN202010182167.XA CN202010182167A CN111220038B CN 111220038 B CN111220038 B CN 111220038B CN 202010182167 A CN202010182167 A CN 202010182167A CN 111220038 B CN111220038 B CN 111220038B
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- blast hole
- baffle
- tunnel blasting
- stress
- Prior art date
- 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.)
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Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 26
- 238000005422 blasting Methods 0.000 title claims abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000000275 quality assurance Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/18—Plugs for boreholes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a blast hole blocking device for tunnel blasting, and belongs to the technical field of blasting engineering auxiliary devices. The invention comprises a filling structural member, wherein the filling structural member comprises a baffle and a connecting rod, one end of the connecting rod is vertically and fixedly connected to the middle part of the baffle, the other end of the connecting rod is used for setting an operation end, a plurality of stress rods which are arranged in parallel are arranged around the connecting rod, the axes of the stress rods are parallel to the axes of the connecting rod, each stress rod is connected with the connecting rod through at least two springs, an electromagnet is arranged on the connecting rod, the electromagnet is matched with a wire, a switch and a power supply to form a working circuit, the switch is arranged at the operation end of the connecting rod, and the stress rods are made of materials capable of being magnetically absorbed; the packing structure is provided with a passage through which the detonating cord passes. The invention has convenient operation and high packing quality assurance.
Description
Technical Field
The invention relates to a blast hole blocking device for tunnel blasting, and belongs to the technical field of blasting engineering auxiliary devices.
Background
Drilling and blasting are common techniques for tunnel excavation, and are widely applied to the fields of water conservancy and hydropower, mines, traffic and the like. In the blasting construction process, the blast holes are filled, so that the pressure of detonation gas acting on the hole wall can be increased, the time of the pressure action can be prolonged, the cracking degree and the throwing distance of the rock are greatly improved, and the blasting effect is improved. At present, materials such as mud scraps are generally adopted as stemming to fill the blastholes, so that the operation is inconvenient, and the filling quality assurance is poor.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the blast hole blocking device for tunnel blasting is convenient to operate and high in packing quality assurance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the blast hole blocking device for tunnel blasting comprises a blocking structural member, wherein the blocking structural member comprises a baffle and a connecting rod, one end of the connecting rod is vertically and fixedly connected to the middle part of the baffle, the other end of the connecting rod is used for setting an operation end, a plurality of stress rods which are arranged in parallel are arranged around the connecting rod, the axes of the stress rods are parallel to the axes of the connecting rod, each stress rod is connected with the connecting rod through at least two springs, an electromagnet is arranged on the connecting rod, the electromagnet is matched with a wire, a switch and a power supply to form a working circuit, the switch is arranged at the operation end of the connecting rod, and the stress rods are made of materials which can be magnetically absorbed; the packing structure is provided with a passage through which the detonating cord passes.
Further is: the connecting rod is connected in the center of baffle, and the electro-magnet sets up in connecting rod length direction's middle part position, and the atress pole uses the connecting rod to be the even interval arrangement of central axis.
Further is: in a natural state, the length of each spring is larger than the radius of the blast hole; the spring is made of non-magnetic materials.
Further is: the springs are uniformly distributed at intervals along the length direction of the stress rod.
Further is: the stress rod is an arc-shaped plate, and one side of the concave surface faces the connecting rod.
Further is: the number of the stress rods is 4-8.
Further is: the two adjacent stressed rods are connected by adopting elastic telescopic materials.
Further is: the device also comprises an end plate, wherein the end plate and the baffle are arranged in parallel and are coaxially arranged; the baffle and the end plate are fixedly connected into a whole through the connecting rod, and the operating end of the connecting rod passes through the end plate and is arranged at the outer side of the end plate.
Further is: the channel for the detonating cord to pass through comprises a hole on the baffle, a central through hole of the connecting rod and a hole on the end plate which are sequentially arranged.
When the blast hole blocking device is used, the diameter of the baffle is matched with the diameter of the blast hole, and the method comprises the following steps: the switch is closed in advance, the working circuit of the electromagnet is connected, the stress rod is acted by magnetic force, the spring is compressed, the outer diameter of the filling structural member is smaller than the diameter of the blast hole, then the device is integrally placed in the blocking position of the blast hole, the baffle is located at the inner side end of the blast hole, the detonating cord is led out from a channel preset on the filling structural member, the switch is disconnected, the magnetism of the electromagnet disappears, the filling structural member is fixed on a blocking section of the blast hole under the action of reset elastic force of the spring, and the blocking of the blast hole is completed.
The beneficial effects of the invention are as follows: the implementation process proves that the invention is convenient to operate and has high packing quality assurance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention after packing is completed;
FIG. 3 is a schematic view of A-A of FIG. 1;
The marks in the figure: 1-filling structural members, 11-baffle plates, 12-end plates, 13-connecting rods, 14-stress rods, 15-springs, 16-elastic telescopic materials, 17-switches, 18-wires, 19-electromagnets, 2-charging sections, 3-blast holes and 4-detonating cords.
Detailed Description
For the purposes of facilitating understanding and practicing the invention, preferred embodiments of the invention are chosen to be further described in conjunction with the accompanying drawings.
As shown in fig. 1 to 3, the blast hole blocking device in the invention comprises a blocking structural member 1, wherein the blocking structural member 1 comprises a baffle 11 and a connecting rod 13, one end of the connecting rod 13 is vertically and fixedly connected to the middle part of the baffle 11, the other end of the connecting rod is used for setting an operation end, a plurality of stress rods 14 which are arranged in parallel are arranged around the connecting rod 13, the axis of each stress rod 14 is parallel to the axis of the connecting rod 13, each stress rod 14 is connected with the connecting rod 13 through at least two springs 15, an electromagnet 19 is arranged on the connecting rod 13, the electromagnet 19, a wire 18, a switch 17 and a power supply are matched to form a working circuit, the switch 17 is arranged at the operation end of the connecting rod 13, and the stress rods 14 are made of materials (such as iron materials) which can be magnetically absorbed; the packing structure 1 is provided with a passage through which the detonating cord 4 passes.
In order to make the whole atress of structure more balanced, the during operation is firm reliable: the connecting rod 13 is connected to the center of the baffle 11, the electromagnet 19 is arranged at the middle position of the connecting rod 13 in the length direction, and the stress rods 14 are uniformly arranged at intervals by taking the connecting rod 13 as a central axis; and the springs 15 are uniformly spaced along the length of the force-bearing rod 14. The number of the stress rods 14 is preferably 4-8, and the structure is simple and reliable. To maintain structural integrity, adjacent members of the force-bearing bar 14 are connected by an elastically stretchable material 16. In order to make the structure more reliable, the invention is also provided with an end plate 12, wherein the end plate 12 and the baffle 11 are arranged in parallel and coaxially; the baffle 11 and the end plate 12 are fixedly connected into a whole through a connecting rod 13, and the operating end of the connecting rod 13 passes through the end plate 12 and is arranged outside the end plate 12. The end plate 12 may serve as an aid in positioning. The shape of the baffle 11 and the end plate 12 are matched with the shape of the blast hole 3, and the baffle is usually round. In implementation, the whole length of the packing structural member 1 is designed according to the length requirement of the blocking section of the blast hole 3.
In order to enable each spring 15 to stably exert pressure, the length of each spring 15 is larger than the radius of the blast hole 3 in a natural state. The spring 15 is preferably made of a non-magnetic material, and if magnetic conduction is performed, the magnetic force of the electromagnet 19 may act to affect the implementation effect.
In order to make the structure better fit with the wall of the borehole 3: the force-receiving rod 14 is an arc-shaped plate, and the concave side faces the connecting rod 13.
In order to facilitate the penetration of the detonating cord 4, the passage for the detonating cord 4 to penetrate through comprises a hole in the baffle 11, a central through hole of the connecting rod 13, and a hole in the end plate 12, which are sequentially arranged, and if the detonating cord 4 runs around, the detonating cord is easy to damage.
When the above-mentioned stemming device is used, the diameter of the baffle 11 is matched with the diameter of the stemming hole 3 (the baffle 11 is too big to be put in and too small to seal the stemming hole 3), comprising the following steps: the switch 17 is closed in advance, the working circuit of the electromagnet 19 is connected, the stress rod 14 is acted by magnetic force, the spring 15 is compressed, the outer diameter of the packing structural member 1 is smaller than the diameter of the blast hole 3, then the whole device is placed in the blocking position of the blast hole 3, the baffle 11 is positioned at the inner side end of the blast hole 3, the detonating cord 4 is led out from a preset channel on the packing structural member 1, then the switch 17 is disconnected, the magnetism of the electromagnet 19 disappears, the packing structural member 1 is fixed on a blocking section of the blast hole 3 under the action of the reset elastic force of the spring 15, the spring 15 is still in a compressed state at the moment, and the blast hole 3 is blocked.
Claims (10)
1. A big gun hole blocking device for tunnel blasting, including packing structure (1), its characterized in that: the packing structural member (1) comprises a baffle (11) and a connecting rod (13), one end of the connecting rod (13) is vertically and fixedly connected to the middle part of the baffle (11), the other end of the connecting rod is used for setting an operation end, a plurality of stress rods (14) which are arranged in parallel are arranged around the connecting rod (13), the axes of the stress rods (14) are parallel to the axes of the connecting rod (13), each stress rod (14) is connected with the connecting rod (13) through at least two springs (15), an electromagnet (19) is arranged on the connecting rod (13), the electromagnet (19) is matched with a wire (18), a switch (17) and a power supply to form a working circuit, the switch (17) is arranged at the operation end of the connecting rod (13), and the stress rods (14) are made of materials which can be magnetically absorbed; the packing structural member (1) is provided with a passage for the detonating cord (4) to pass through.
2. The blasthole plugging apparatus for tunnel blasting of claim 1, wherein: the connecting rod (13) is connected in the center of baffle (11), and electro-magnet (19) set up in the middle part position of connecting rod (13) length direction, atress pole (14) use connecting rod (13) as the even interval arrangement of central axis.
3. The blasthole plugging apparatus for tunnel blasting of claim 2, wherein: in a natural state, the length of each spring (15) is larger than the radius of the blast hole (3); the spring (15) is made of non-magnetic materials.
4. The blasthole plugging apparatus for tunnel blasting of claim 1, wherein: the stress rod (14) is an arc-shaped plate, and one side of the concave surface faces the connecting rod (13).
5. The blasthole plugging apparatus for tunnel blasting of claim 1, wherein: the springs (15) are uniformly distributed at intervals along the length direction of the stress rod (14).
6. The blasthole plugging apparatus for tunnel blasting of claim 1, wherein: the number of the stress rods (14) is 4-8.
7. The blasthole plugging apparatus for tunnel blasting of claim 1, wherein: the two adjacent stressed rods (14) are connected by adopting an elastic telescopic material (16).
8. The blast hole plugging device for tunnel blasting according to any one of claims 1 to 7, wherein: the device also comprises an end plate (12), wherein the end plate (12) and the baffle (11) are arranged in parallel and are coaxially arranged; the baffle (11) and the end plate (12) are fixedly connected into a whole through the connecting rod (13), and the operating end of the connecting rod (13) passes through the end plate (12) and is arranged at the outer side of the end plate (12).
9. The blasthole plugging apparatus for tunnel blasting of claim 8, wherein: the passage for the detonating cord (4) to pass through comprises a hole on a baffle plate (11), a central through hole of a connecting rod (13) and a hole on an end plate (12) which are sequentially arranged.
10. The blast hole filling method for tunnel blasting is characterized by comprising the following steps of: the adoption of the blast hole blocking device for blasting tunnels according to any one of claims 1 to 9, wherein the diameter of the baffle plate (11) is matched with the diameter of the blast hole (3), the switch (17) is pre-closed when the blast hole is blocked, the working circuit of the electromagnet (19) is switched on, the stress rod (14) is acted by magnetic force, the spring (15) is compressed, the outer diameter of the blocking structural member (1) is smaller than the diameter of the blast hole (3), then the device is integrally placed in the blocking position of the blast hole (3), the baffle plate (11) is positioned at the inner side end of the blast hole (3), the detonating cord (4) is led out from a channel preset on the blocking structural member (1), then the switch (17) is switched off, the magnetism of the electromagnet (19) is disappeared, the blocking structural member (1) is fixed on the blocking section of the blast hole (3) under the action of the reset elastic force of the spring (15), and the blocking of the blast hole (3) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182167.XA CN111220038B (en) | 2020-03-16 | 2020-03-16 | Blast hole blocking device for tunnel blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182167.XA CN111220038B (en) | 2020-03-16 | 2020-03-16 | Blast hole blocking device for tunnel blasting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111220038A CN111220038A (en) | 2020-06-02 |
| CN111220038B true CN111220038B (en) | 2024-06-18 |
Family
ID=70807994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010182167.XA Active CN111220038B (en) | 2020-03-16 | 2020-03-16 | Blast hole blocking device for tunnel blasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111220038B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211903942U (en) * | 2020-03-16 | 2020-11-10 | 中国电建集团成都勘测设计研究院有限公司 | Blast hole blocking device for tunnel blasting |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB320765A (en) * | 1928-10-16 | 1929-10-24 | David Hodge | Improvements relating to tampings for bore-holes for blasting cartridges |
| AU2005202663B2 (en) * | 2005-06-17 | 2013-07-11 | Mti Group Pty Ltd | Improvements in Blasthole Plugs |
| KR100929764B1 (en) * | 2007-09-01 | 2009-12-03 | 김용근 | Cooling vessel to prevent freezing and deformation |
| CN204718513U (en) * | 2015-06-15 | 2015-10-21 | 河北钢铁集团矿业有限公司 | The special shutoff ring of VCR method explosion |
| CN205425997U (en) * | 2016-03-21 | 2016-08-03 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel blast construction week lateral opening charging means |
| CN206073828U (en) * | 2016-08-04 | 2017-04-05 | 西北矿冶研究院 | Mining hole plugging plug |
| CN108106507B (en) * | 2017-12-18 | 2019-07-23 | 北京中大***工程有限公司 | A kind of tunnel top blasthole plugging device |
| CN207797899U (en) * | 2018-02-05 | 2018-08-31 | 温州鸿基矿山***器材有限公司 | A kind of push button plug for borehole |
| CN108548461B (en) * | 2018-06-15 | 2023-06-23 | 贵州大学 | Fixing device convenient for fixing and hanging of ammunition in blast hole for engineering blasting |
| CN110823038B (en) * | 2019-11-25 | 2020-11-24 | 武汉理工大学 | Soft foundation blast hole plugging protection device and method |
-
2020
- 2020-03-16 CN CN202010182167.XA patent/CN111220038B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211903942U (en) * | 2020-03-16 | 2020-11-10 | 中国电建集团成都勘测设计研究院有限公司 | Blast hole blocking device for tunnel blasting |
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| Publication number | Publication date |
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| CN111220038A (en) | 2020-06-02 |
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