CN102288078A - Self-locking blast hole plug for blasting - Google Patents
Self-locking blast hole plug for blasting Download PDFInfo
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- CN102288078A CN102288078A CN2011102347747A CN201110234774A CN102288078A CN 102288078 A CN102288078 A CN 102288078A CN 2011102347747 A CN2011102347747 A CN 2011102347747A CN 201110234774 A CN201110234774 A CN 201110234774A CN 102288078 A CN102288078 A CN 102288078A
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- hangnail
- cock body
- locking type
- self
- explosion
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Abstract
The invention discloses a self-locking blast hole plug for blasting. The plug comprises a columnar plug body, wherein densely distributed barbs are integrally formed on the excircle surface of the columnar plug body. Due to a structure that the densely distributed barbs are integrally formed on the excircle surface of the columnar plug body, after the columnar plug body is plugged in a blast hole, the barbs are radially deformed along the columnar plug body under the action of the inner wall of the blast hole, radial outward prestress is generated, the barbs clamp the surface of the wall of the blast hole when tensioned, and friction is increased through multi-point contact, so blocking strength is high, and the barbs have high self-locking performance under the impact of blasting high pressure gas. The plug has a simple structure and low manufacturing cost, can be combined with water stemming in the prior art during use, has high blocking strength and a good sealing effect, cannot protrude the blast hole due to the impact of explosion gas, and always blocks the blast hole and is subjected to blasting failure with a tunneling surface in the explosion process, so that blasting efficiency is improved.
Description
Technical field
The present invention relates to a kind of auxiliary equipment that is used for explosion, particularly a kind of tamping plug that is used to improve blasting efficiency.
Background technology
Utilize electric blasting circuit to carry out in the construction of explosion driving, blast hole drilling also utilizes borehole to fill in explosive and electric cap carries out the technical scheme that explosion belongs to widespread usage.In order to improve blasting quality and efficient, can adopt mode at borehole outer end filling bubble mud or other materials, increase eye mouthful explosion resistance, make and build up the compression energy in the borehole, improve the impulsive force of shock wave, stop the detonation gas of high pressure to release certain applications from the borehole spray, can also make simultaneously explosive fully oxidation in explosive reaction, emit more energy, make heat fully be converted into mechanical energy, thereby reach desirable demolition effect.Simultaneously, guarantee shotfiring safety, the temperature and pressure when reducing detonation gas effusion working face; Also because stemming can stop flame and scorching hot solid particle to spray, reduced the possibility of the gas that ignites, coal dust simultaneously in borehole.
In the prior art, stemming belongs to paste, and it is unreal to fill in behind the borehole encapsulation, and outstanding easily borehole can not function as described above fully under the impact of blast, reduces blasting efficiency, increases blasting cost; Simultaneously, stemming is filled in need have molding procedure, and operator's labour intensity is bigger.
For addressing the above problem, the various devices that are used to block borehole have appearred, and typical structure has following two kinds: 1, by filling the column type of tamper evidence that gases at high pressure expand to block the borehole port, compare with stemming and have higher obstruction intensity; But because this type of tamper evidence smooth in appearance expands by gas, contact strength is less, stops up insufficient strength, under the effect of explosive force, is easy to skid off borehole, does not still reach desired effect; Simultaneously, this type of tamper evidence needs supporting aerating device, the operation more complicated, and cost is also higher, and gases at high pressure are had relatively high expectations for the material and the sealing property of this type of tamper evidence, use cost also increases substantially; 2, fire-retardant wad, front end is the cylinder of external diameter less than borehole, tail end is a umbrella-shaped structure, umbrella-shaped structure has fold and can shrink, umbrella-shaped structure has the jam effect in theory, but this member has following shortcoming: umbrella-shaped structure has the gathering effect because fold is set, thereby intensity is low, can not play effective obstruction intensity; The gases at high pressure that the blast back produces act on umbrella-shaped structure by going out by the big gap between cylinder and the borehole wall, form radially inner component, impel umbrella-shaped structure to draw in, then this fire-retardant wad then can be gone out in company with the explosion gases at high pressure, the demolition effect that plays even not as good as adopting stemming.
Therefore, need a kind of borehole obstruction piece, simple in structure, cost of manufacture is low, has higher intensity of congestion after the use, can be because of the outstanding borehole of the impact of explosion gas, and remain in the blast process and stop up and lost efficacy, to improve blasting efficiency with the common explosion of development end.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of explosion self-locking type tamping plug, simple in structure, cost of manufacture is low, has higher intensity of congestion after the use, can be because of the outstanding borehole of the impact of explosion gas, remain in the blast process and stop up and lost efficacy, to improve blasting efficiency with the common explosion of development end.
Explosion of the present invention self-locking type tamping plug comprises the column cock body of being made by the elasticity macromolecular material, the one-body molded dense distribution hangnail of described column cock body outer round surface.
Further, coaxial front opening and the pre-large post-small bellmouth formation hollow-core construction of having of described column cock body;
Further, described column cock body back segment sealing and being provided with is communicated with bellmouth is used for cable-through hole by the electric cap lead, and described cable-through hole external diameter makes its mode with pressure be coated on the electric cap lead;
Further, the hole wall of described bellmouth has three axial expansion mouths at least near column cock body front end edge is circumferentially uniform;
Further, described hangnail is the array arrangement vertically and circumferentially;
Further, described hangnail is taper shape or pyramid; Perhaps for being positioned at the triangle or the rectangular configuration of column cock body sagittal plane;
Further, the hangnail that axial and circumferential are adjacent is crisscross arranged, and hangnail can be pressed to the hangnail of axial adjacent rear side with it after being subjected to the radial pressure radial deformation;
Further, the macromolecular material that is used to make the column cock body is the fire retardant elastic macromolecular material;
Further, described column cock body front end is provided with chamfering.
The invention has the beneficial effects as follows: explosion of the present invention self-locking type tamping plug, employing is in the structure of the one-body molded dense distribution hangnail of column cock body outer round surface, after the column cock body is filled in borehole, hangnail takes place radially to deform along the column cock body in the effect of borehole inwall, produce radially outer prestressing force, in the time of tensioner, utilize hangnail to block the borehole wall surface, the multiple spot contact increases friction, thereby has higher obstruction intensity, under the impact of explosion gases at high pressure, hangnail has self-locking property preferably; The present invention is simple in structure, and cost of manufacture is low, can be in conjunction with the bubble mud of prior art during use, have higher intensity of congestion and sealing effectiveness, can be because of the outstanding borehole of the impact of explosion gas, remain in the blast process and stop up and lost efficacy, to improve blasting efficiency with the common explosion of development end.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is the embodiment of the invention one structural representation;
Fig. 2 is the embodiment of the invention one an axial cutaway view;
Fig. 3 be Fig. 2 along A to view;
Fig. 4 is the embodiment of the invention two structural representations;
Fig. 5 is first kind of hangnail arrangement schematic diagram;
Fig. 6 is second kind of hangnail arrangement schematic diagram;
Fig. 7 enters hangnail distressed structure schematic diagram behind the borehole for the column cock body.
The specific embodiment
Fig. 1 is the embodiment of the invention one structural representation, Fig. 2 is the embodiment of the invention one an axial cutaway view, Fig. 3 be Fig. 2 along A to view, as shown in the figure: the explosion of present embodiment self-locking type tamping plug, comprise column cock body 1, the one-body molded dense distribution hangnail 2 of described column cock body 1 outer round surface, as shown in the figure, hangnail 2 is obliquely installed to the back upper place, and the cross representative is the hangnail of omissive representation among the figure; Be the direction that pushes before the indication of the present invention to borehole, after then be the direction of heel with respect to borehole inside.
In the present embodiment, described column cock body 1 coaxial front opening and the pre-large post-small bellmouth 11 formation hollow-core constructions of having; Adopt bellmouth 11 structures, under the effect of the blasting impact power that produces suddenly, bellmouth 11 inwalls can produce radially outer component, impel column cock body 1 radially outward to expand, add the prestressing force effect of hangnail 2, further strengthen self-locking strength, improve blasting efficiency.
In the present embodiment, described column cock body 1 back segment sealing and being provided with is communicated with bellmouth 11 is used for cable-through hole 12 by the electric cap lead, the external diameter of described cable-through hole 12 makes its mode with pressure be coated on the electric cap lead, the size that just is used for the cable-through hole 12 by lead is coated wire just, and form less pressure, have the better seal performance, guarantee demolition effect.
In the present embodiment, the hole wall of described bellmouth 11 has three axial expansion mouths 13 at least near column cock body 1 front end edge is circumferentially uniform, this expansion hatch 13 is made the slit opening structure, and promptly the both sides of expansion hatch 13 can not exist gap or little gap to paste mutually, to keep the circular configuration of column cock body; Be to know the existence that indicates this expansion hatch 13 among the figure, amplify processing, do not represent real structure; Because the existence of expansion hatch 13, when entering, can suitably reduce resistance, when the impact force action of explosion gases at high pressure during in bellmouth 11, radial component can make the bellmouth 11 wall sections that expansion hatch 13 is set more outwards expand, make comparatively firm being stuck on the borehole of hangnail, utilize blast impulse power to increase obstruction intensity of the present invention, improve blasting efficiency.
In the present embodiment, described hangnail 2 is array vertically and circumferentially and arranges; Queueing discipline, stressed even, and design and produce convenient and simple.
In the present embodiment, described hangnail 2 is conical (as shown in Figure 1) or pyramid (not expression among the figure), has comparatively stable structure, and bearing capacity is stronger.
In the present embodiment, as Fig. 1 and shown in Figure 5, the hangnail 2 that axial and circumferential are adjacent is crisscross arranged, be crisscross arranged and form the comparatively labyrinth seal structure of standard, the too much gap between the hangnail of gases at high pressure of avoiding exploding is gone out, and particularly uses in conjunction with stemming, and sealing effectiveness is preferable; In the present embodiment, hangnail 2 can be pressed to the hangnail of axial adjacent rear side with it after being subjected to the radial pressure radial deformation, as shown in Figure 7, just after the present invention enters borehole, under the radial compression applied of borehole wall, the hangnail that is positioned at the front side is along column cock body radial deformation, be pressed in and be adjacent on the hangnail that is positioned at rear side, the hangnail tip that causes being positioned at the front side all the time obliquely, form comparatively firm interface arrangment, be beneficial to increase and stop up intensity, this shows, this structure not only is beneficial to sealing, and stops up intensity and further improve.
Fig. 4 is the embodiment of the invention two structural representations, as shown in the figure, the difference of present embodiment and embodiment one only is: the hangnail in the present embodiment is triangle or the rectangular configuration that is positioned at column cock body sagittal plane, as shown in the figure, hangnail 2a is a triangular structure, and hangnail 2b is the rectangular configuration hangnail; The layout of triangle hangnail is identical with conical structure hangnail arrangement; Figure 4 shows that triangular structure, set square structure just, this structure is compared with embodiment one, owing to adopt triangle or rectangular configuration, have bigger radial deformation space, thereby adaptive capacity is stronger, can be applicable to borehole and the bigger occasion of difference of the present invention.
Fig. 6 is second kind of hangnail arrangement schematic diagram, expression be the arrangement of rectangular configuration hangnail (hangnail 2b), as shown in the figure, this arrangement forms tight labyrinth effect, sealing is better, uses in conjunction with stemming, effect is splendid.
The present invention can be made into following shape: column cock body 1 external diameter equate with the normal diameter of blasthole drilling drill bit or ± 1 millimeter, hangnail is the 2-8 millimeter along the radial height of column cock body, 30 °-60 ° at the angle of inclination of hangnail 2 is generally made by the elastic flame macromolecular material, to adapt to the colliery driving; During use, the present invention directly fills in borehole and gets final product, and integral body is filled in manually to push in the borehole process has bigger blocked force but the manpower one hand can advance energetically and gets final product.In the practical application, if hangnail is taper or pyramid, column cock body 1 external diameter equates that with the normal diameter of blasthole drilling drill bit hangnail is 3 millimeters along the radial height of column cock body; If hangnail is triangle or rectangular configuration, column cock body 1 external diameter is bigger 1 millimeter than the normal diameter of blasthole drilling drill bit, is 3 millimeters along the radial height of column cock body.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. an explosion self-locking type tamping plug is characterized in that: comprise the column cock body of being made by macromolecular material, the one-body molded dense distribution hangnail of described column cock body outer round surface.
2. explosion self-locking type tamping plug according to claim 1 is characterized in that: coaxial front opening and the pre-large post-small bellmouth formation hollow-core construction of having of described column cock body.
3. explosion self-locking type tamping plug according to claim 2, it is characterized in that: described column cock body back segment sealing and being provided with is communicated with bellmouth is used for cable-through hole by the electric cap lead, and described cable-through hole external diameter makes its mode with pressure be coated on the electric cap lead.
4. explosion self-locking type tamping plug according to claim 2 is characterized in that: the hole wall of described bellmouth has three axial expansion mouths at least near column cock body front end edge is circumferentially uniform.
5. explosion self-locking type tamping plug according to claim 1 is characterized in that: described hangnail is array vertically and circumferentially and arranges.
6. explosion self-locking type tamping plug according to claim 5 is characterized in that: described hangnail is taper shape or pyramid; Perhaps for being positioned at the triangle or the rectangular configuration of column cock body sagittal plane.
7. explosion self-locking type tamping plug according to claim 5, it is characterized in that: the hangnail that axial and circumferential are adjacent is crisscross arranged, and hangnail can be pressed to the hangnail of axial adjacent rear side with it after being subjected to the radial pressure radial deformation.
8. explosion self-locking type tamping plug according to claim 1 is characterized in that: described column cock body front end is provided with chamfering.
9. explosion self-locking type tamping plug according to claim 1 is characterized in that: the macromolecular material that is used to make the column cock body is the fire retardant elastic macromolecular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102347747A CN102288078A (en) | 2011-08-16 | 2011-08-16 | Self-locking blast hole plug for blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102347747A CN102288078A (en) | 2011-08-16 | 2011-08-16 | Self-locking blast hole plug for blasting |
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| Publication Number | Publication Date |
|---|---|
| CN102288078A true CN102288078A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102347747A Pending CN102288078A (en) | 2011-08-16 | 2011-08-16 | Self-locking blast hole plug for blasting |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017622A (en) * | 2012-12-18 | 2013-04-03 | 山西大同大学 | Water-resisting returnable multi-stage buffer fractured self-deformation self-latching shot hole stopper |
| CN103604327A (en) * | 2013-11-28 | 2014-02-26 | 石家庄铁道大学 | Hole sealing device for deep hole blasting in rock-soil body |
| CN103759603A (en) * | 2013-12-23 | 2014-04-30 | 山西潞安环保能源开发股份有限公司 | Self-bursting self-latching hydraulic pressure dust proof friction extrusion bore hole blockage device |
| CN104534947A (en) * | 2014-12-09 | 2015-04-22 | 葛洲坝易普力股份有限公司 | Method for quickly blocking blast hole |
| CN104897015A (en) * | 2015-06-25 | 2015-09-09 | 中国科学技术大学 | Hole filling method by blasting |
| CN105352380A (en) * | 2015-12-15 | 2016-02-24 | 辽宁工程技术大学 | Paper-made blast hole plug |
| CN105865278A (en) * | 2016-06-20 | 2016-08-17 | 中国地质大学（武汉） | Tamping plug for blasting engineering |
| CN106767209B (en) * | 2017-01-17 | 2018-08-07 | 长沙有色冶金设计研究院有限公司 | A kind of blast hole projectile filling and blocking device |
| CN111043924A (en) * | 2019-12-13 | 2020-04-21 | 中铁十八局集团有限公司 | Efficient blasting method for blocking stemming of tunnel soft rock full-section multistage ultra-deep hole double-end stemming |
| CN111174655A (en) * | 2019-12-17 | 2020-05-19 | 浙江省高能爆破工程有限公司 | Quick plugging device for water hole |
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| CN1041994A (en) * | 1988-10-20 | 1990-05-09 | 张志舜 | Caltrop |
| CN2153036Y (en) * | 1993-02-20 | 1994-01-12 | 中国矿业大学 | Plug for gun borehole |
| CN2200812Y (en) * | 1994-05-27 | 1995-06-14 | 孟京齐 | Fire retardent gun plug for coal mine well fire gun |
| AU682654B1 (en) * | 1997-03-14 | 1997-10-09 | Silverport Pty. Ltd. | Device to facilitate placing of slurries in up holes |
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| CN2428611Y (en) * | 2000-06-28 | 2001-05-02 | 中国人民解放军济南军区军械雷达修理所 | Plastic nail |
| CN2718302Y (en) * | 2004-04-02 | 2005-08-17 | 方志生 | Multifunction nail |
| CN2743786Y (en) * | 2004-12-10 | 2005-11-30 | 姜有 | Blast hole plug |
| CN202255148U (en) * | 2011-08-16 | 2012-05-30 | 重庆工程职业技术学院 | Embrasure plugging device |
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2011
- 2011-08-16 CN CN2011102347747A patent/CN102288078A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1041994A (en) * | 1988-10-20 | 1990-05-09 | 张志舜 | Caltrop |
| CN2153036Y (en) * | 1993-02-20 | 1994-01-12 | 中国矿业大学 | Plug for gun borehole |
| CN2200812Y (en) * | 1994-05-27 | 1995-06-14 | 孟京齐 | Fire retardent gun plug for coal mine well fire gun |
| AU682654B1 (en) * | 1997-03-14 | 1997-10-09 | Silverport Pty. Ltd. | Device to facilitate placing of slurries in up holes |
| CN2416482Y (en) * | 2000-04-19 | 2001-01-24 | 乌买尔江·阿不拉 | Explosive protection apparatus |
| CN2428611Y (en) * | 2000-06-28 | 2001-05-02 | 中国人民解放军济南军区军械雷达修理所 | Plastic nail |
| CN2718302Y (en) * | 2004-04-02 | 2005-08-17 | 方志生 | Multifunction nail |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017622A (en) * | 2012-12-18 | 2013-04-03 | 山西大同大学 | Water-resisting returnable multi-stage buffer fractured self-deformation self-latching shot hole stopper |
| CN103604327A (en) * | 2013-11-28 | 2014-02-26 | 石家庄铁道大学 | Hole sealing device for deep hole blasting in rock-soil body |
| CN103604327B (en) * | 2013-11-28 | 2015-06-24 | 石家庄铁道大学 | Hole sealing device for deep hole blasting in rock-soil body |
| CN103759603B (en) * | 2013-12-23 | 2015-11-25 | 山西潞安环保能源开发股份有限公司 | Hydraulic pressure is from spalling Self-closing lock dust-proof friction and Extrusion type perforation plugging device |
| CN103759603A (en) * | 2013-12-23 | 2014-04-30 | 山西潞安环保能源开发股份有限公司 | Self-bursting self-latching hydraulic pressure dust proof friction extrusion bore hole blockage device |
| CN104534947A (en) * | 2014-12-09 | 2015-04-22 | 葛洲坝易普力股份有限公司 | Method for quickly blocking blast hole |
| CN104897015A (en) * | 2015-06-25 | 2015-09-09 | 中国科学技术大学 | Hole filling method by blasting |
| CN104897015B (en) * | 2015-06-25 | 2017-01-18 | 中国科学技术大学 | Hole filling method by blasting |
| CN105352380A (en) * | 2015-12-15 | 2016-02-24 | 辽宁工程技术大学 | Paper-made blast hole plug |
| CN105865278A (en) * | 2016-06-20 | 2016-08-17 | 中国地质大学（武汉） | Tamping plug for blasting engineering |
| CN106767209B (en) * | 2017-01-17 | 2018-08-07 | 长沙有色冶金设计研究院有限公司 | A kind of blast hole projectile filling and blocking device |
| CN111043924A (en) * | 2019-12-13 | 2020-04-21 | 中铁十八局集团有限公司 | Efficient blasting method for blocking stemming of tunnel soft rock full-section multistage ultra-deep hole double-end stemming |
| CN111043924B (en) * | 2019-12-13 | 2022-01-04 | 中铁十八局集团有限公司 | Efficient blasting method for blocking stemming of tunnel soft rock full-section multistage ultra-deep hole double-end stemming |
| CN111174655A (en) * | 2019-12-17 | 2020-05-19 | 浙江省高能爆破工程有限公司 | Quick plugging device for water hole |
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Application publication date: 20111221 |