CN111336879A - Blast hole blocking device - Google Patents
Blast hole blocking device Download PDFInfo
- Publication number
- CN111336879A CN111336879A CN202010269647.XA CN202010269647A CN111336879A CN 111336879 A CN111336879 A CN 111336879A CN 202010269647 A CN202010269647 A CN 202010269647A CN 111336879 A CN111336879 A CN 111336879A
- Authority
- CN
- China
- Prior art keywords
- extrusion
- central column
- connecting rod
- plug
- blast hole
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 title abstract description 6
- 238000001125 extrusion Methods 0.000 claims abstract description 104
- 238000000034 method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 7
- 238000005422 blasting Methods 0.000 abstract description 5
- 238000000275 quality assurance Methods 0.000 abstract description 4
- 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
- 238000005474 detonation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention relates to a blast hole blocking device, and belongs to the technical field of blasting engineering auxiliary devices. The invention comprises a positioning structural member, an extrusion plug and a fastening bolt, wherein the positioning structural member comprises an end plate, a central column, a connecting rod and an extrusion strip, one end of the central column is fixedly and vertically connected to the central position of the end plate, the other end of the central column is provided with an external thread structure, the connecting rod is a plurality of pieces arranged at intervals along the circumferential direction of the central column, one end of the connecting rod is fixedly connected to the end plate, the other end of the connecting rod is provided with an outward-bent convex section, the extrusion strip is a plurality of pieces arranged at intervals along the circumferential direction of the central column, the extrusion strip is arranged at a; the extrusion plug is provided with a through hole for the central column to pass through, the inner space surrounded by the connecting rod can allow the extrusion plug to be inserted, and the fastening bolt is provided with a threaded hole matched with the external thread on the central column. The invention has convenient operation and high filling quality assurance.
Description
Technical Field
The invention relates to a blast hole blocking device, and belongs to the technical field of blasting engineering auxiliary devices.
Background
Drilling blasting is a common technology for tunnel excavation and is widely applied to the fields of water conservancy and hydropower, mines, traffic and the like. In the blasting construction process, the blast hole is plugged, so that the pressure of the detonation gas acting on the hole wall can be increased, the time of the pressure action is prolonged, the spalling degree and the throwing distance of the rock are greatly improved, and the blasting effect is improved. At present, materials are often used locally in engineering, materials such as mud chips and the like are generally adopted as stemming to fill blast holes, operation is inconvenient, and filling quality assurance is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the blast hole blocking device is convenient to operate and high in filling quality assurance.
In order to solve the technical problems, the invention adopts the technical scheme that: a blast hole blocking device comprises a positioning structural part, an extrusion plug and a fastening bolt, wherein the positioning structural part comprises an end plate, a central column, a connecting rod and an extrusion strip, one end of the central column is fixedly and vertically connected to the central position of the end plate, the other end of the central column is provided with an external thread structure, the connecting rod is a plurality of pieces arranged at intervals along the circumferential direction of the central column, one end of the connecting rod is fixedly connected to the end plate, the other end of the connecting rod is provided with an outward-bent convex section, the extrusion strip is a plurality of pieces arranged at intervals along the circumferential direction of the central column, the extrusion strip is arranged between the connecting rods; the extrusion plug is provided with a through hole for the central column to pass through, the inner space surrounded by the connecting rod can allow the extrusion plug to be inserted, and the fastening bolt is provided with a threaded hole matched with the external thread on the central column; the positioning structural part is provided with a channel for the detonating cord to pass through.
Further, the method comprises the following steps: the extrusion strip is made of elastic telescopic materials; the extrusion plug is made of hard material.
Further, the method comprises the following steps: the extrusion strip is fixedly connected with the end plate.
Further, the method comprises the following steps: the connecting rods are uniformly arranged at intervals by taking the central column as a central axis; the extrusion strips are uniformly arranged at intervals by taking the central column as a central axis; the connecting rods and the extrusion strips are arranged in a staggered manner.
Further, the method comprises the following steps: the connecting rod is an arc-shaped plate-shaped piece, and one side of the concave surface faces the central column; the extrusion strip is an arc-shaped plate-shaped piece, and one side of the concave surface faces the central column; the thickness of the extrusion strip is greater than that of the connecting rod, and the connecting rod is arranged in the middle of the extrusion strip in the thickness direction in the section direction of the central column.
Further, the method comprises the following steps: the outer wall of the extrusion plug is provided with a conical surface.
Further, the method comprises the following steps: at the section of the clamping structure formed by the extrusion plug, the inner side surface of the extrusion strip has a taper matched with the outer wall of the extrusion plug, and the thickness of the extrusion strip is gradually reduced from the inner end to the outer end.
Further, the method comprises the following steps: the channel for the detonating cord to pass through comprises a hole on the end plate and a central through hole of the central column which are arranged in sequence.
When the method is implemented, the diameter of the end plate is matched with the diameter of a blast hole, the outer diameter of the extrusion plug is smaller than the diameter of the blast hole, and the radius of the extrusion plug plus the thickness of the extrusion strip is larger than the radius of the blast hole, and the method comprises the following steps: the extrusion plug and the fastening bolt are assembled on the central column in sequence, the positioning structural part, the extrusion plug and the fastening bolt are assembled into a whole, the device is integrally installed in a blast hole, one side of the end plate is positioned in the blast hole, the outer convex section is clamped at the outer end face of the blast hole, the detonating cord is reserved on the positioning structural part and penetrates through the reserved channel, then the fastening bolt is screwed, the extrusion plug is pushed to move towards the end plate, so that the extrusion strip can be extruded and is tightly attached to the wall of the blast hole, and the blockage of the blast hole is completed.
The invention has the beneficial effects that: according to the implementation process, the invention has the advantages of convenient operation and high filling quality assurance.
Drawings
FIG. 1 is a general schematic illustration of the practice of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view A-A of FIG. 2;
the labels in the figure are: 1-positioning structural part, 11-end plate, 12-central column, 13-connecting rod, 14-extrusion strip, 15-external convex section, 2-extrusion plug, 3-blast hole, 4-detonating cord, 5-charging section and 6-fastening bolt.
Detailed Description
For the purpose of promoting an understanding and an enabling description of the invention, reference should be made to the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
As shown in fig. 1 to 3, the present invention includes a positioning structure member 1, an extrusion plug 2 and a fastening bolt 6, the positioning structure member 1 includes an end plate 11, a central column 12, a connecting rod 13 and an extrusion strip 14, one end of the central column 12 is fixedly and vertically connected to the central position of the end plate 11, the other end is provided with an external thread structure, the connecting rod 13 is a plurality of pieces arranged at intervals along the circumference of the central column 12, one end of the connecting rod 13 is fixedly connected to the end plate 11, the other end is provided with an outwardly bent convex section 15, the extrusion strip 14 is a plurality of pieces arranged at intervals along the circumference of the central column 12, the extrusion strip 14 is arranged at a position between the connecting rods 13, and the extrusion strip 14 and the positioning structure member 1 have a fixed connection part (the connection part is arranged on the end plate 11; the extrusion plug 2 is provided with a through hole for the central column 12 to pass through, the connecting rod 13 encloses an inner space capable of allowing the extrusion plug 2 to be inserted, and the fastening bolt 6 is provided with a threaded hole matched with the external thread on the central column 12; the positioning structure 1 is provided with a passage through which the detonating cord 4 passes. The cross-sectional shapes of the end plate 11 and the extrusion plug 2 are matched with the blast hole 3, and are generally circular, that is, the end plate 11 is a circular plate, the extrusion plug 2 is cylindrical or truncated cone, and for the convenience of insertion, the outer wall of the extrusion plug 2 is generally set to be a conical surface. In implementation, the diameter of the end plate 11 is matched with the diameter of the blast hole 3, the outer diameter of the extrusion plug 2 is smaller than the diameter of the blast hole 3, the radius of the extrusion plug 2 plus the thickness of the extrusion strip 14 is larger than the radius of the blast hole 3, the extrusion strip 14 is tightly attached to the wall of the blast hole 3 under the extrusion effect of the extrusion plug 2, and the feeding of the extrusion plug 2 is realized by the screwing of the fastening bolt 6. In order to better achieve the above purpose, the extrusion strip 14 is made of elastic material; the extrusion plug 2 is made of hard material. In addition, when the outer wall of the extrusion plug 2 is provided with a conical surface, the inner side surface of the extrusion strip 14 has a taper matched with the outer wall of the extrusion plug 2 when the outer wall and the extrusion plug 2 form a segment of a clamping structure, and the thickness of the extrusion strip 14 is gradually reduced from the inner end to the outer end. The thickness of the extrusion strip 14 adopts a gradual change design, so that the whole process of the extrusion plug 2 can meet the following requirements: the radius of the extrusion plug 2 plus the thickness of the extrusion strip 14 is larger than the radius of the blast hole 3; and the overall size of the extrusion plug 2 is substantially uniform after the radius plus the thickness of the extrusion strip 14, so that the extrusion strip 14 can be better attached to the wall of the blast hole 3.
In order to make the structure simple and reliable, the connecting rods 13 are uniformly arranged at intervals by taking the central column 12 as a central axis; the extrusion strips 14 are uniformly arranged at intervals by taking the central column 12 as a central axis; the connecting rods 13 and the extruded strips 14 are in a staggered arrangement. The number of the connecting rods 13 is the same as that of the extrusion strips 14, and the number of the connecting rods is 4-8, in this embodiment, 4.
In order to facilitate the extrusion strips 14 to better fit the wall of the blast hole 3, the connecting rod 13 is an arc-shaped plate-shaped member, and the concave side faces the central column 12; the extrusion strips 14 are arc-shaped plate-shaped pieces, and the concave side faces the central column 12; the thickness of the extrusion strip 14 is greater than that of the connecting rod 13, and the connecting rod 13 is arranged in the middle of the extrusion strip 14 in the thickness direction in the cross-sectional direction of the central column 12.
In order to facilitate the penetration of the detonating cord 4, the passage for the detonating cord 4 to pass through comprises a hole on the end plate 11 and a central through hole of the central column 12 which are arranged in sequence.
When the method is implemented, the method comprises the following steps: firstly, the extrusion plug 2 and the fastening bolt 6 are sequentially assembled on the central column 12, the positioning structural component 1, the extrusion plug 2 and the fastening bolt 6 are assembled into a whole, the whole device is installed in the blast hole 3, one side of the end plate 11 is positioned in the blast hole 3, the outer convex section 15 is clamped at the position of the outer end face of the blast hole 3, the detonating cord 4 penetrates through a reserved channel on the positioning structural component 1, then the fastening bolt 6 is screwed, the extrusion plug 2 is pushed to move towards the end plate 11, so that the extrusion strip 14 is extruded and is tightly attached to the wall of the blast hole 3, and the blast hole 3 is plugged.
Claims (10)
1. A blast hole plugging device is characterized in that: the positioning structure comprises a positioning structure part (1), an extrusion plug (2) and a fastening bolt (6), wherein the positioning structure part (1) comprises an end plate (11), a central column (12), a connecting rod (13) and an extrusion strip (14), one end of the central column (12) is fixedly and vertically connected to the central position of the end plate (11), the other end of the central column is provided with an external thread structure, the connecting rod (13) is a plurality of pieces which are arranged along the circumferential direction of the central column (12) at intervals, one end of the connecting rod (13) is fixedly connected to the end plate (11), the other end of the connecting rod is provided with an outward bent convex section (15), the extrusion strip (14) is a plurality of pieces which are arranged along the circumferential direction of the central column (12) at intervals, the extrusion strip (14) is arranged between the connecting rods (13); the extrusion plug (2) is provided with a through hole for the central column (12) to pass through, the inner space surrounded by the connecting rod (13) can allow the extrusion plug (2) to be inserted, and the fastening bolt (6) is provided with a threaded hole matched with the external thread on the central column (12); the positioning structural part (1) is provided with a channel for the detonating cord (4) to pass through.
2. A blasthole plugging device as defined in claim 1, further comprising: the extrusion strip (14) is made of elastic telescopic materials; the extrusion plug (2) is made of hard material.
3. A blasthole plugging device as defined in claim 1, further comprising: the extrusion strip (14) is fixedly connected with the end plate (11).
4. A blasthole plugging device as defined in claim 1, further comprising: the connecting rods (13) are uniformly arranged at intervals by taking the central column (12) as a central axis; the extrusion strips (14) are uniformly arranged at intervals by taking the central column (12) as a central axis; the connecting rods (13) and the extrusion strips (14) are arranged in a staggered manner.
5. A blasthole plugging device as defined in claim 1, further comprising: the connecting rod (13) is an arc-shaped plate-shaped piece, and one side of the concave surface faces the central column (12); the extrusion strip (14) is an arc-shaped plate-shaped piece, and the concave side faces the central column (12); the thickness of the extrusion strip (14) is larger than that of the connecting rod (13), and the connecting rod (13) is arranged in the middle of the extrusion strip (14) in the thickness direction in the section direction of the central column (12).
6. A blasthole plugging device as defined in claim 1, further comprising: the outer wall of the extrusion plug (2) is provided with a conical surface.
7. A blasthole plugging device as defined in claim 5, further comprising: in the section forming a clamping structure with the extrusion plug (2), the inner side surface of the extrusion strip (14) has a taper matched with the outer wall of the extrusion plug (2), and the thickness of the extrusion strip (14) is gradually reduced from the inner end to the outer end.
8. A blasthole plugging device as defined in claim 1, further comprising: the channel for the detonating cord (4) to pass through comprises a hole on the end plate (11) and a central through hole of the central column (12) which are arranged in sequence.
9. A blast hole plugging device according to any one of claims 1 to 8, wherein: the diameter of the end plate (11) is matched with that of the blast hole (3), the outer diameter of the extrusion plug (2) is smaller than that of the blast hole (3), and the radius of the extrusion plug (2) plus the thickness of the extrusion strip (14) is larger than that of the blast hole (3).
10. A method of stemming a borehole, using a device according to any one of claims 1 to 8, the diameter of the end plate (11) being adapted to the diameter of the borehole (3), the outer diameter of the extrusion plug (2) being smaller than the diameter of the borehole (3), the radius of the extrusion plug (2) plus the thickness of the extrusion strip (14) being larger than the radius of the borehole (3), comprising the steps of: assembling the extrusion plug (2) and the fastening bolt (6) on the central column (12) in sequence, assembling the positioning structural member (1), the extrusion plug (2) and the fastening bolt (6) into a whole, and integrally loading the device into the blast hole (3), wherein one side of the end plate (11) is positioned in the blast hole (3), the outer convex section (15) is clamped at the outer end surface of the blast hole (3), the detonating cord (4) is reserved from the positioning structural member (1) to pass through a channel, then the fastening bolt (6) is screwed, and the extrusion plug (2) is pushed to move towards the end plate (11), so that the extrusion strip (14) is extruded and is tightly attached to the wall of the blast hole (3), and the blockage of the blast hole (3) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269647.XA CN111336879B (en) | 2020-04-08 | 2020-04-08 | Blast hole blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269647.XA CN111336879B (en) | 2020-04-08 | 2020-04-08 | Blast hole blocking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111336879A true CN111336879A (en) | 2020-06-26 |
| CN111336879B CN111336879B (en) | 2022-06-03 |
Family
ID=71180711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010269647.XA Active CN111336879B (en) | 2020-04-08 | 2020-04-08 | Blast hole blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111336879B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2007568A (en) * | 1934-12-06 | 1935-07-09 | William E Ressler | Blasting plug |
| US3952656A (en) * | 1970-09-21 | 1976-04-27 | Imperial Chemical Industries Of Australia And New Zealand Limited | Device and process |
| US5247886A (en) * | 1992-10-14 | 1993-09-28 | The Curators Of The University Of Missouri | Blast plug and stemming construction for blast holes |
| US20080173205A1 (en) * | 2004-10-12 | 2008-07-24 | Glen Robert Hawkins | Stemming Plug |
| US20090314177A1 (en) * | 2008-06-19 | 2009-12-24 | George Laszlo | Tamping Device |
| WO2014030139A1 (en) * | 2012-08-22 | 2014-02-27 | Fowlds 3 Limited | A stemming device |
| CN205980972U (en) * | 2016-08-04 | 2017-02-22 | 西北矿冶研究院 | Blast hole blanking plug for open-cast mining |
| CN108036685A (en) * | 2017-12-11 | 2018-05-15 | 中铁广州建设有限公司 | A kind of rock multiple-row blasting device and its method for blocking dry ice fracturing rock blasthole |
| CN110186344A (en) * | 2019-07-16 | 2019-08-30 | 通源石油科技集团股份有限公司 | A kind of plugging device and method for cutting top for coal mine |
-
2020
- 2020-04-08 CN CN202010269647.XA patent/CN111336879B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2007568A (en) * | 1934-12-06 | 1935-07-09 | William E Ressler | Blasting plug |
| US3952656A (en) * | 1970-09-21 | 1976-04-27 | Imperial Chemical Industries Of Australia And New Zealand Limited | Device and process |
| US5247886A (en) * | 1992-10-14 | 1993-09-28 | The Curators Of The University Of Missouri | Blast plug and stemming construction for blast holes |
| US20080173205A1 (en) * | 2004-10-12 | 2008-07-24 | Glen Robert Hawkins | Stemming Plug |
| US20090314177A1 (en) * | 2008-06-19 | 2009-12-24 | George Laszlo | Tamping Device |
| WO2014030139A1 (en) * | 2012-08-22 | 2014-02-27 | Fowlds 3 Limited | A stemming device |
| CN205980972U (en) * | 2016-08-04 | 2017-02-22 | 西北矿冶研究院 | Blast hole blanking plug for open-cast mining |
| CN108036685A (en) * | 2017-12-11 | 2018-05-15 | 中铁广州建设有限公司 | A kind of rock multiple-row blasting device and its method for blocking dry ice fracturing rock blasthole |
| CN110186344A (en) * | 2019-07-16 | 2019-08-30 | 通源石油科技集团股份有限公司 | A kind of plugging device and method for cutting top for coal mine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111336879B (en) | 2022-06-03 |
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