CN110174031B - Device for overcoming blasting root - Google Patents
Device for overcoming blasting root Download PDFInfo
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- CN110174031B CN110174031B CN201910404090.3A CN201910404090A CN110174031B CN 110174031 B CN110174031 B CN 110174031B CN 201910404090 A CN201910404090 A CN 201910404090A CN 110174031 B CN110174031 B CN 110174031B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- 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
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- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a device for overcoming blasting root, and particularly relates to the technical field of engineering blasting. The device includes integrated into one piece's powder column fixed part and circular steel sheet, the powder column fixed part is the internal surface and leaks hopper-shaped for curved, the fixed chamber of powder column including upper portion and the chamber of gathering of lower part, the little head that leaks hopper-shaped is towards one side of circular steel sheet, circular steel sheet can play the reflex action to the shock wave that produces when blasting, it has the effect of gathering to gather in the chamber, can improve explosion energy density, the internal surface that gathers the chamber simultaneously covers there is one deck red copper sheet, the shock wave that does benefit to the explosion production turns into high energy metal efflux, the horizontal effect scope further expands, the opening part of the big head that leaks hopper-shaped of powder column fixed part is great circle, big circular shape's diameter is 0.8 ~ 0.9 times's big gun hole diameter, the explosive diameter of 1.05 times. The opening part of the funnel-shaped small end of the explosive column fixing part is in a small circle shape, the small circle shape is a guide opening, and the diameter of the small circle shape is smaller than that of the large circle shape and is 0.4-0.5 times of the diameter of the blast hole.
Description
Technical Field
The invention relates to the technical field of engineering blasting, in particular to a device for overcoming blasting root.
Background
At present, most of bench blasting operations have a problem that ultra-deep drilling is considered in the drilling process in order to overcome the blasting root considering the blasting effect, and a certain amount of explosive needs to be filled in the ultra-deep part. If the part is not ultra-deep, the blasting effect cannot reach the designed step height due to the clamping effect of the rock, a root bottom is generated, a large amount of secondary blasting cost is required to be invested when the root bottom is processed, the construction cost is increased, and blasting flying stones are easily generated when the root bottom is processed, so that the blasting safety is seriously influenced; if set up this part ultra-deep, the blasting effect can obviously improve, but near the big gun hole rock can appear the overbreak breakage, brings the difficulty to next circulation drilling operation, has increased the drilling depth moreover, has increased the explosive consumption, greatly increased blasting operation cost, though set up the ultra-deep back blasting effect and improve, nevertheless because the clamp of rock acts on, lead to ultra-deep part explosive can not obtain make full use of. At present, although a large number of researchers carry out deeper research on the reasonable and ultra-deep step blasting, the ultra-deep setting gradually becomes mature through a large number of finite element simulations and test comparisons, but the problems are not fundamentally solved, so the most effective method is to use a device to overcome the blasting root.
Disclosure of Invention
The invention aims to overcome the defects and provides a device for overcoming blasting root, which can overcome the root and improve the flatness of a horizontal free surface of a rock body after step blasting operation.
The invention specifically adopts the following technical scheme:
the utility model provides an overcome device of blasting root, includes integrated into one piece's powder column fixed part and circular steel sheet, the powder column fixed part is that the internal surface is curved hourglass hopper-shaped, and including the fixed chamber of powder column on upper portion and the ability chamber of gathering of lower part, the microcephaly that leaks hopper-shaped is towards one side of circular steel sheet.
Preferably, the inner surface of the energy collecting cavity is covered with a layer of copper sheets.
Preferably, the opening of the funnel-shaped big end of the explosive column fixing part is in a big circle shape, the diameter of the big circle is 0.8-0.9 times of the diameter of a blast hole, and the diameter of the big circle is 1.05 times of the diameter of explosive.
Preferably, the opening of the funnel-shaped small end of the explosive column fixing part is in a small circle shape, the diameter of the small circle is smaller than that of the large circle, and the diameter of the blast hole is 0.4-0.5 times.
Preferably, the diameter of the round steel plate is the same as that of the large circle of the fixed part of the grain.
More preferably, the circular steel plate is made of high manganese steel material with the diameter of 25-35 mm and the thickness of 2 mm.
Preferably, the height of the medicine column fixing part is 40mm, the thickness is 2mm, the diameter of the big circle is 25-35 mm, and the diameter of the small circle is 15-18 mm.
More preferably, the drug column fixing part is made of PVC waterproof material.
Preferably, the radian of the drug column fixing cavity is convex towards the outer side, and the radian of the energy gathering cavity is convex towards the inner side.
The invention has the following beneficial effects:
the device is directly placed at the bottom of the blast hole, so that the drilling cost can be effectively reduced, explosive columns at the ultra-deep part are saved, and the cost of step blasting operation is greatly reduced;
the circular steel plate which plays a role in reflecting shock waves in the device can reflect shock waves generated by explosion, so that the energy density of the explosion shock waves is greatly improved; the inner surface of the fixed part of the explosive column is arc-shaped, so that the energy accumulation effect can be achieved, the explosion energy density is further improved, the copper sheet is attached to the inner surface, the explosion shock wave is converted into high-energy metal jet flow, and the transverse action range is further expanded;
the explosive shock wave reflected by the circular steel plate at the bottom converges with the high-energy metal jet flow generated after the explosive column fixing device gathers energy and points to the position where the explosive root bottom is easy to generate, so that the aim of overcoming the explosive root bottom is fulfilled;
the device simple structure, the operation is swift convenient, and is with low costs, can effectively reduce the drilling expense, practices thrift the explosive of ultra-deep part, can directly be used for the blast hole bottom that the job site step blasting bored and establish, and adaptability is wide.
Drawings
FIG. 1 is a schematic view showing the overall structure of an apparatus for overcoming a blasting root;
fig. 2 is a front view of the device for overcoming the root of the blast.
Wherein, 1 is a powder column fixing part, 2 is a round steel plate, 3 is a guide port, 4 is a big circle, and 5 is a red copper sheet.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 and 2, a device for overcoming blasting root includes integrated into one piece's powder column fixed part 1 and circular steel sheet 2, the powder column fixed part is that the internal surface is curved hourglass hopper-shaped, including the fixed chamber of powder column on upper portion and the chamber of gathering of lower part, the little head of hourglass hopper-shaped is towards one side of circular steel sheet.
The inner surface of the energy collecting cavity is covered with a layer of red copper sheet 5, which is beneficial to converting shock waves generated by explosion into high-energy metal jet flow, and the transverse action range is further expanded.
The opening of the funnel-shaped big end of the explosive column fixing part is in a big circle shape 4, the diameter of the big circle shape 4 is 0.8-09 times of the diameter of a blast hole and is 1.05 times of the diameter of explosive. The opening part of the funnel-shaped small end of the explosive column fixing part is in a small circle shape, the small circle shape is a guide opening 3, and the diameter of the small circle shape is smaller than that of the large circle shape and is 0.4-0.5 times of the diameter of the blast hole.
The diameter of the round steel plate 2 is the same as the diameter of the large circle of the powder column fixing part 1. The diameter of the round steel plate 2 is 25-35 mm, and the thickness is 2 mm. The height of the medicine column fixing part 1 is 40mm, the thickness is 2mm, the diameter of the big circle is 25-35 mm, and the diameter of the small circle is 15-18 mm.
The drug column fixing part 1 is made of PVC waterproof material. The radian of the drug column fixing cavity is convex towards the outer side, and the radian of the energy gathering cavity is convex towards the inner side.
The principle of blasting by using the device for overcoming the blasting root is that after the explosive columns in the blast holes are detonated, the blasting shock waves propagated to the hole bottoms in the blast holes act on the device, when the blasting shock waves reach the circular steel plate, the circular steel plate at the bottom can reflect the blasting shock waves, and the energy density of the reflected blasting shock waves is greatly improved; the bottom of the explosive column fixing part is in a circular arc shape with a downward inclined direction, so that the explosive column fixing part has an energy accumulation effect, after the explosive is exploded, the explosive shock wave can accumulate energy along the normal direction of the circular arc of the energy accumulation cavity, the explosive energy density is improved, the action range of the explosive shock wave in the transverse direction is expanded, the direction of the energy accumulation cavity of the explosive column fixing part is set to point to a part which is easy to generate an explosion root bottom, and the purpose of overcoming the explosion root bottom can be achieved; the shock wave reflected by the circular steel plate at the bottom can be gathered with the high-energy metal jet flow generated after the energy accumulation of the explosive column fixing part, so that the explosion energy density is further improved, and the energy accumulation cavity can be aligned to the part which is easy to generate the blasting root bottom, so that the effect of overcoming the blasting root bottom can be achieved.
Drilling a blast hole, firstly manually cleaning a blast hole area to ensure that the field is smooth, determining the position of the blast hole, strictly drilling according to the requirements of drilling construction after the preparation is finished, and paying attention to the protection of the inside and the surrounding environment of the blast hole after the drilling is finished.
The installation mode of the device for overcoming the blasting root is as follows:
the explosive column is fixed on the explosive column fixing part and then is placed at the bottom of the blast hole, and as the guide port can point to the periphery, the bottom of the device only needs to be laid flat when the device is placed, the diameter of the opening of the upper circle of the explosive column fixing part is only 1.05 times of the diameter of the explosive column, the explosive column fixing part and the explosive column fixing part can be effectively combined, and the operation is convenient; after the device is loaded, other explosive columns are loaded.
The explosive is initiated, the emulsion explosive is selected for use to the explosive, after the powder charge is accomplished, adopts clay or sand to block up the big gun hole, and after the big gun hole blockked up, confirm safety can detonate the explosive grain in the big gun hole through the detonator, replace the ultra-deep part of drilling through the device.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (3)
1. A device for overcoming blasting root is characterized by comprising a powder column fixing part and a round steel plate which are integrally formed, wherein the powder column fixing part is in a funnel shape with an arc-shaped inner surface and comprises a powder column fixing cavity at the upper part and an energy collecting cavity at the lower part, and a small funnel-shaped head faces one side of the round steel plate;
the opening of the funnel-shaped big end of the explosive column fixing part is in a big circle shape, the diameter of the big circle is 0.8-0.9 times of the diameter of a blast hole, and is 1.05 times of the diameter of explosive;
the opening of the funnel-shaped small end of the explosive column fixing part is in a small circle shape, the diameter of the small circle is smaller than that of the large circle, and is 0.4-0.5 times of the diameter of the blast hole;
the diameter of the round steel plate is the same as that of the big circle of the fixed part of the explosive column;
the radian of the drug column fixing cavity is convex towards the outer side, and the radian of the energy gathering cavity is convex towards the inner side.
2. An apparatus for overcoming a blast root base as in claim 1 wherein the inner surface of said shaped chamber is covered with a copper foil.
3. The apparatus for overcoming root of blasting according to claim 1, wherein the pillar-fixing part has a height of 40mm, a thickness of 2mm, a diameter of a large circle of 25 to 35mm, and a diameter of a small circle of 15 to 18 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404090.3A CN110174031B (en) | 2019-05-16 | 2019-05-16 | Device for overcoming blasting root |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910404090.3A CN110174031B (en) | 2019-05-16 | 2019-05-16 | Device for overcoming blasting root |
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| Publication Number | Publication Date |
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| CN110174031A CN110174031A (en) | 2019-08-27 |
| CN110174031B true CN110174031B (en) | 2021-12-28 |
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| CN201910404090.3A Expired - Fee Related CN110174031B (en) | 2019-05-16 | 2019-05-16 | Device for overcoming blasting root |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110823033B (en) * | 2019-11-22 | 2021-11-09 | 武汉大学 | Blasting excavation method based on centralized control of energy side above blast hole bottom |
| CN113108659A (en) * | 2021-04-19 | 2021-07-13 | 太原理工大学 | A loaded constitution for controlling strip mine blasting root |
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| CN1556367A (en) * | 2003-12-31 | 2004-12-22 | 大连理工大学 | Medium deep hole explosion energy focusing flat bottom bullet and use method |
| RU2449240C1 (en) * | 2010-11-18 | 2012-04-27 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method of ore and rock breakage in development of solid mineral deposits |
| CN103983153A (en) * | 2014-05-23 | 2014-08-13 | 中国科学技术大学 | Case circular discontinuous energy concentrating jet flow cracker |
| CN106839909A (en) * | 2017-03-31 | 2017-06-13 | 武汉大学 | Reduce the multidirectional collision cumulative multipoint priming method of the quick-fried foundation of deep hole step |
| CN107289829A (en) * | 2017-08-25 | 2017-10-24 | 辽宁工程技术大学 | A kind of ring plane jet jet cutter and its application method |
| CN108444352A (en) * | 2018-05-25 | 2018-08-24 | 惠州市兴鲁节能科技有限公司 | A kind of novel deep hole blasting charge constitution |
| CN108645300A (en) * | 2018-07-03 | 2018-10-12 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator and the blasting construction method based on the device |
| CN208476097U (en) * | 2018-07-03 | 2019-02-05 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator |
-
2019
- 2019-05-16 CN CN201910404090.3A patent/CN110174031B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556367A (en) * | 2003-12-31 | 2004-12-22 | 大连理工大学 | Medium deep hole explosion energy focusing flat bottom bullet and use method |
| RU2449240C1 (en) * | 2010-11-18 | 2012-04-27 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method of ore and rock breakage in development of solid mineral deposits |
| CN103983153A (en) * | 2014-05-23 | 2014-08-13 | 中国科学技术大学 | Case circular discontinuous energy concentrating jet flow cracker |
| CN106839909A (en) * | 2017-03-31 | 2017-06-13 | 武汉大学 | Reduce the multidirectional collision cumulative multipoint priming method of the quick-fried foundation of deep hole step |
| CN107289829A (en) * | 2017-08-25 | 2017-10-24 | 辽宁工程技术大学 | A kind of ring plane jet jet cutter and its application method |
| CN108444352A (en) * | 2018-05-25 | 2018-08-24 | 惠州市兴鲁节能科技有限公司 | A kind of novel deep hole blasting charge constitution |
| CN108645300A (en) * | 2018-07-03 | 2018-10-12 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator and the blasting construction method based on the device |
| CN208476097U (en) * | 2018-07-03 | 2019-02-05 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator |
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