CN205980972U - Blast hole blanking plug for open-cast mining - Google Patents
Blast hole blanking plug for open-cast mining Download PDFInfo
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- CN205980972U CN205980972U CN201620837875.1U CN201620837875U CN205980972U CN 205980972 U CN205980972 U CN 205980972U CN 201620837875 U CN201620837875 U CN 201620837875U CN 205980972 U CN205980972 U CN 205980972U
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- wedge
- plugging
- blockage body
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Abstract
The utility model provides a blast hole blanking plug for open-cast mining, which comprises a first blocking body and a second blocking body, wherein the first blocking body is a cylindrical body, the outer diameter of the cylindrical body is smaller than the diameter of a blast hole, and a wedge-shaped cavity is arranged in the cylindrical body; the second plugging body is a wedge-shaped body matched with the wedge-shaped cavity, the minimum outer diameter of the wedge-shaped body is larger than that of the wedge-shaped cavity, the maximum outer diameter of the wedge-shaped body is larger than that of the opening end of the wedge-shaped cavity, the length of the second plugging body is larger than that of the first plugging body, holes are symmetrically formed in the centers of the first plugging body and the second plugging body, and the first plugging body and the second plugging body are connected in the holes through bolts; the utility model discloses blanking plug pressurized self expands, makes the frictional force between its and the pipe wall increase rapidly, delays explosive gas from downthehole dashing out, continues to maintain downthehole pressure, enlarges the broken scope of rock mass blasting to improve blasting effect, improve explosive energy utilization.
Description
Technical field
This utility model belongs to surface mining technical field and in particular to a kind of surface mining multiple-row blasting device.
Background technology
With the development of China's surface mining technology, various wide-aperture rock drilling apparatuses, new-type high explosive, high-precision
The invention of the advanced blasting techniques such as degree detonator and explosive and application, make surface mining technology there occurs and greatly change.
But in actual production, outdoor multiple-row blasting is still using the rock dust blowing out during boring and live flint clay as blocking material
Material, there is rock dust granule and invades the situation that explosive is internal and is mutually mixed with explosive in this kind of plugging material；Existing special blocking up
The plug device mostly concrete block of the built-in reinforcing bar of post-taper, water stemming bag for mine, air heave type transparent blocking bag, open circles taper
High-elastic resin blanking plug, the generally cylindrical stopper with rubber case etc., it is loaded down with trivial details, reliable that these devices all have mounting process
Property strong the shortcomings of；Blocking effect determines blasting quality, therefore, it is necessary to exploitation one kind can improve blasting quality surface mining
Use multiple-row blasting device.
Utility model content
This utility model is to solve above-mentioned problems of the prior art, provides a kind of surface mining multiple-row blasting
Device.
The technical solution adopted in the utility model is：A kind of surface mining multiple-row blasting device, including the first blockage body,
Two blockage bodies, described first blockage body is cylinder, and the external diameter of cylinder is less than blasthole diameter, is provided with cylinder
Wedge cavities；Described second blockage body is the sphenoid using cooperatively with wedge cavities, and the minimum outer diameter of sphenoid is more than wedge cavities
Minimum outer diameter, the maximum outside diameter of sphenoid is more than the maximum gauge of wedge cavities opening, and the length of described second blockage body is more than
The length of the first blockage body, is equipped with through hole at the centre symmetry line of described first blockage body and the second blockage body, described through hole
Inside it is bolted the first blockage body and the second blockage body.
Further, described first blockage body and the second blockage body are all with the machined molding of elastomeric material.
The beneficial effects of the utility model are：After explosive initiation, due to the effect of initiator axial constraint, stemming is made to obtain relatively
Complete compression, reaches attenuating shock wave and extends stress wave activity time effect；Meanwhile, blanking plug is pressurized itself expands, and makes
Itself frictional force and tube wall between increases rapidly, delays detonation gas to go out from the hole, continues in the hole pressure, expands rock mass
Explosion and crushing scope, thus improving demolition effect, improves explosive energy utilization rate.
Brief description
Fig. 1 is a kind of surface mining multiple-row blasting device structural representation.
In figure：1st, the first blockage body；2nd, the second blockage body；3rd, bolt；4th, through hole；11st, wedge cavities.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further details.
As shown in figure 1, a kind of surface mining multiple-row blasting device, including the first blockage body 1, the second blockage body 2, first blocks up
Cock body 1 is cylinder, and the external diameter of cylinder is less than blasthole diameter, is provided with wedge cavities 11 in cylinder；Second blocking
Body 2 is the sphenoid using cooperatively with wedge cavities 11, and the minimum outer diameter of sphenoid is more than the minimum outer diameter of wedge cavities, sphenoid
Maximum outside diameter is more than the maximum gauge of wedge cavities opening, and the length of the second blockage body 2 is more than the length of the first blockage body 1, the
It is equipped with through hole 4 at the centre symmetry line of one blockage body 1 and the second blockage body 2, in through hole 4, first blocking is connected by bolt 3
Body 1 and the second blockage body 2；First blockage body 1 and the second blockage body 2 are all with the machined molding of elastomeric material.
During use, this utility model blanking plug is integrally placed above blasthole mouth bubble mud, and at blanking plug center of radius
Reserve for detonator and connect aperture, tighten bolt 3, so that the first blockage body 1 and blasthole inwall is in close contact.
After shot hole blasting using the blocking of this utility model blanking plug, the standard throwing of generation and weaken two kinds of explosions of throwing
Funnel more individually adopts the blasthole of clay blocking, and its funnel radius, depth have different degrees of growth, especially funnel volume
It is significantly improved, the blasthole using blanking plug blocking is to weaken thrown-off funnel, and its funnel radius is strengthened throwing close to clay blocking
Throw funnel radius length.
Claims (2)
1. a kind of surface mining with multiple-row blasting device it is characterised in that：Including the first blockage body, the second blockage body, described first
Blockage body is cylinder, and the external diameter of cylinder is less than blasthole diameter, is provided with wedge cavities in cylinder；Described second blocks up
Cock body is the sphenoid using cooperatively with wedge cavities, and the minimum outer diameter of sphenoid is more than the minimum outer diameter of wedge cavities, sphenoid
Maximum outside diameter is more than the maximum gauge of wedge cavities opening, and the length of described second blockage body is more than the length of the first blockage body,
It is equipped with through hole at the centre symmetry line of described first blockage body and the second blockage body, in described through hole, be bolted first
Blockage body and the second blockage body.
2. a kind of surface mining according to claim 1 with multiple-row blasting device it is characterised in that：Described first blockage body and
Second blockage body is all with the machined molding of elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620837875.1U CN205980972U (en) | 2016-08-04 | 2016-08-04 | Blast hole blanking plug for open-cast mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620837875.1U CN205980972U (en) | 2016-08-04 | 2016-08-04 | Blast hole blanking plug for open-cast mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205980972U true CN205980972U (en) | 2017-02-22 |
Family
ID=58029342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620837875.1U Active CN205980972U (en) | 2016-08-04 | 2016-08-04 | Blast hole blanking plug for open-cast mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205980972U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806798A (en) * | 2017-12-04 | 2018-03-16 | 中铁广州建设有限公司 | A kind of dry ice fracturing rock blast hole projectile filling obstruction method and blockage structure |
| CN109813189A (en) * | 2019-03-01 | 2019-05-28 | 中铁十八局集团有限公司 | A kind of hard rock tunnel blasting digging method |
| CN110701970A (en) * | 2019-11-11 | 2020-01-17 | 中国矿业大学(北京) | Wedge-shaped blast hole plugging device and using method |
| CN111336879A (en) * | 2020-04-08 | 2020-06-26 | 中国电建集团成都勘测设计研究院有限公司 | Blast hole blocking device |
| CN111457799A (en) * | 2020-04-14 | 2020-07-28 | 中南大学 | Delay blasting system for preventing detonator from dragging and construction method thereof |
-
2016
- 2016-08-04 CN CN201620837875.1U patent/CN205980972U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806798A (en) * | 2017-12-04 | 2018-03-16 | 中铁广州建设有限公司 | A kind of dry ice fracturing rock blast hole projectile filling obstruction method and blockage structure |
| CN107806798B (en) * | 2017-12-04 | 2020-01-17 | 中铁广州建设有限公司 | Dry ice fracturing rock blast hole charging and blocking method and blocking structure |
| CN109813189A (en) * | 2019-03-01 | 2019-05-28 | 中铁十八局集团有限公司 | A kind of hard rock tunnel blasting digging method |
| CN109813189B (en) * | 2019-03-01 | 2021-03-30 | 中铁十八局集团有限公司 | Hard rock tunnel blasting excavation method |
| CN110701970A (en) * | 2019-11-11 | 2020-01-17 | 中国矿业大学(北京) | Wedge-shaped blast hole plugging device and using method |
| CN111336879A (en) * | 2020-04-08 | 2020-06-26 | 中国电建集团成都勘测设计研究院有限公司 | Blast hole blocking device |
| CN111336879B (en) * | 2020-04-08 | 2022-06-03 | 中国电建集团成都勘测设计研究院有限公司 | Blast hole blocking device |
| CN111457799A (en) * | 2020-04-14 | 2020-07-28 | 中南大学 | Delay blasting system for preventing detonator from dragging and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |