CN210070765U - Deformable folding portable quick charging energy-gathering device - Google Patents
Deformable folding portable quick charging energy-gathering device Download PDFInfo
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- CN210070765U CN210070765U CN201822199968.8U CN201822199968U CN210070765U CN 210070765 U CN210070765 U CN 210070765U CN 201822199968 U CN201822199968 U CN 201822199968U CN 210070765 U CN210070765 U CN 210070765U
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Abstract
The utility model discloses a portable quick powder charge of flexible folding gathers can device, including flexible folding bellows shape shaped charge cover, explosive, ignition. The shaped charge liner is a deformable folding corrugated pipe or a pipe body with an inward concave annular groove; the explosive is a common explosive and is filled into the pipe body; the detonating device is a universal detonating device such as a detonator detonating cord and the like. The utility model discloses mainly the root end of solving the medium-length hole blasting overexcasts undermining problem, the broken problem of rock, explosive energy utilization rate problem and undercutting blasting problem. The blast hole ultra-depth can be reduced in the drilling and blasting method, the drilling cost is reduced, and the utilization rate of the blast hole is improved. The utility model discloses change traditional explosive loading mode and explosive mode of doing work, release energy in design position and direction, improve explosive energy utilization and rate, practice thrift the cost. The utility model discloses introduced a folding bellows shape liner of shape, the form is simple, and the shape is changeable, easily processing, it is convenient to use, improves production efficiency, reduces use cost.
Description
Technical Field
The utility model belongs to the technical field of engineering blasting and ammunition engineering, concretely relates to portable quick powder charge of flexible folding gathers can device.
Background
The blasting technology plays a great role in the infrastructure of China, and tunnel excavation, ore mining, subway construction, sea filling and island building and the like all need to be completed in a blasting matching mode. Railway lines and public lines in China are long and complex, tunnels need to be excavated when railways and highways are built, rock or soil in the tunnels are stressed greatly, and the blasting mode is convenient and fast to apply. At present, most cities in China are subway under construction, mechanical operation is difficult to adopt in coastal cities and some cities with hard geology, and blasting technology is still required to be used for realizing. In coal mines and other ore mining, the production efficiency is improved and the cost is reduced by adopting an explosion method.
Although the blasting technology is widely used and rapidly developed, the current blasting technology still has defects, such as serious overbreak, low explosive energy utilization rate, low blast hole utilization rate and the like. These problems can bring about corresponding secondary disasters, such as vibration hazards, environmental pollution and the like.
In view of these problems, some measures have been taken, and chinese patent CN102735121A discloses a shaped charge cutter which can be used for deep hole presplitting blasting. The energy-gathered explosive is low in dosage, large in penetration depth and large in jet flow direction, and can form a plurality of longitudinal cracks to blast by utilizing the stress concentration effect and the principle that rock is compression-resistant and not tensile. Chinese patent CN103983153A discloses a casing annular discontinuous energy-gathering jet flow fracturing device, which comprises a circular tube-shaped cartridge case, an end cover and an igniter; the explosive has the characteristics of high explosive energy utilization rate, low cost, energy accumulation orientation and the like. It can form multiple discontinuous annular jet penetrating target body, and make the target body form multiple and dense cracks. Chinese patent CN107726936A discloses a spiral pipe shaped charge liner, which is used to form a shell to be filled with explosive and to form a continuous spiral jet penetrating rock mass. While many solutions have improved these problems, the results are still not ideal and new problems arise. These inventions are characterized by a fixed liner. Namely: the energy collecting devices need to be manufactured in advance, the field working conditions are different, the used explosives are generally finished explosive strips, and the energy collecting devices cannot be quickly processed on the field according to the methods. The size of the devices is not easy to change, the devices are complex to manufacture, complex to operate, inconvenient to use and overlarge in cost, and are not beneficial to industrial large-scale production and popularization. However, due to the generation principle of the shaped jet, no deformable shaped jet device is reported at present.
SUMMERY OF THE UTILITY MODEL
Defect to current blasting technique, the utility model aims to provide a portable quick powder charge of flexible folding gathers can device. Through the design of a retractable energy-gathering structure, the aim of quickly charging the energy-gathering device on site is fulfilled. The energy gathering cover is in a deformable corrugated structure, and the tips of the inner corrugations are provided with piercing points. The device is a non-dangerous article in an unfilled contracted state, occupies small space and is convenient to transport and manage; when in use, the corrugated pipe is stretched, the pipe cavity is expanded and thickened, and the medicine strip can be filled in; and then the corrugated pipe cavity is compressed to shrink, the sharp-end piercing point pierces the explosive strip, the explosive inside the pipe is extruded into the pipe, and the compression is stopped when the pipe cavity is filled with the explosive. Meanwhile, the medicine strip can be fixed by the pierced corrugated part, and the medicine strip is favorably positioned. The energy-gathered corrugated structure for charging is placed in the blast hole, and the liner formed by the corrugations after detonation generates annular jet flow to form gaps on the rock wall, so that the problems of overbreak and underbreak of the blasting root can be well solved, and the workload and the danger of subsequent engineering are reduced. The structure of a drill rod, a reinforcing steel bar and the like can be cut in special environment.
The purpose of the utility model is realized by the following technical scheme:
a deformable folding portable quick charge energy collecting device comprises a deformable folding corrugated pipe shaped charge cover, explosive and an explosive device, wherein the deformable folding corrugated pipe shaped charge cover is a deformable folding corrugated pipe or a pipe body with an inwards concave annular groove; the section of the annular groove can be semicircular, wedge-shaped and other shapes capable of forming jet flow; the energy gathering device forms a compact annular jet flow by utilizing a deformable folding corrugated pipe or an inwards concave annular groove of a pipe body with the inwards concave annular groove; filling explosives in the pipe body; the detonating device is a detonating cord arranged in the middle of the explosive and parallel to the axis, a detonator embedded in the end face of the detonating cord and a detonating tube embedded in the end face of the detonating cord.
Wherein the deformable folded bellows liner is stretchable and contractible.
Wherein, the wall thickness of the tube body of the deformable folding corrugated tube shaped liner is 0.2 to 2.5mm, and the number of the corrugations is not less than 2; the largest width of the corrugated section is not more than half of the largest diameter of the pipe body, the smallest width of the corrugated section is not less than 1mm, the largest height of the opening of the section is not more than half of the largest diameter of the pipe body, the smallest width of the opening of the section is not less than 1mm, the smallest corrugated space of the pipe body is 0, and the corrugated space can be adjusted by practical application.
The tip of the section of the annular groove of the deformable folding corrugated pipe shaped liner is provided with a puncture point with an angle not larger than 30 degrees, so that the package of the medicine strip can be punctured.
Wherein, the deformable folding corrugated pipe shaped liner is provided with an inwards concave annular groove after being stretched, and the section of the groove can be semicircular or wedge-shaped; the filling structure of the explosive can be further optimized to improve the penetration effect.
Wherein the deformable folded corrugated pipe shaped liner has a concave annular groove with a section height h in a compressed state1The outer diameter of the pipe is D and the inner diameter of the pipe is D1Outer diameter d of medicine strip0. The relationship between the height elongation of the corrugated pipe and the size of the liner is as follows:
compared with the prior art, the utility model the advantage lie in:
(1) the utility model discloses the medicine type cover has the elasticity, easily processing, portable, and easy operation loads the batch pencil at compression state, and the powder charge is accomplished promptly to tensile bellows afterwards.
(2) The utility model discloses the type of charge cover is special, changes the explosive to the acting mode of rock, can form radial annular and gather the energy efflux, beats the joint-cutting that is on a parallel with perpendicular to big gun hole direction in the big gun hole.
(3) The utility model discloses the existing effect of gathering of shaped charge cover has the tube restraint explosive effect again, improves the utilization ratio of material, practices thrift use cost.
(4) The utility model discloses a bellows structure type cover compares with linear charge structure and has intensive annular efflux effect, forms bigger gap scope on the pore wall.
(5) The utility model discloses shaped charge cover shape, size are nimble, can change the bellows shape according to actual need, can design for shapes such as cylinder, circular cone, round platform still have good penetration effect. The cross section of the groove of the corrugated pipe can be selected from a circle and a wedge, wherein the wedge angle can be designed and adjusted according to actual needs, and the corrugated pipe is convenient to control.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Figure 2 is a cross-sectional view of a bellows shaped charge having a wedge cross-section with 5 annular grooves.
FIG. 3 is a cross-sectional view of a compressed state of a corrugated tube having a wedge-shaped cross-section.
FIG. 4 is a cross-sectional view of a wedge section bellows shaped charge penetration steel plate.
FIG. 5 is a cross-sectional view of a wedge section bellows shaped charge penetration steel tube.
Figure 6 is a cross-sectional view of a bellows shaped charge having a semicircular cross-section with 5 annular grooves.
The reference numbers in the figures mean: the detonator is 1, the corrugated liner is 2, the explosive is 3, the steel pipe is 4, the steel plate is 5, and the puncture point is 6.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
The utility model discloses a collapsible portable quick powder charge gathers can device, including bellows shape shaped charge cover 2, explosive 3 and ignition. The explosive 3 is a high-energy explosive and has the characteristics of high energy and high explosion speed; the corrugated pipe shaped liner 2 is a pipe with more than 2 annular grooves, and the cross section of each groove can be in a semicircular shape, a wedge shape or other shapes capable of forming jet flow; the overall envelope line of the corrugated pipe shaped liner 2 is in the shape of a cylinder, a circular truncated cone, a cone and the like; the hollow part of the bellows-shaped liner 2 is filled with explosive 3, and a detonating device is installed on the central axis part. The detonating device is a detonator 1.
When in use, the utility model is a non-dangerous article in the non-charging shrinkage state, occupies small space and is convenient for transportation and management; when in use, the corrugated pipe is stretched, the pipe cavity is expanded and thickened, and the medicine strip can be filled in; and then compressing the corrugated pipe cavity to shrink, puncturing the explosive strip by the puncturing point at the tip end, extruding the explosive inside the pipe, and stopping compressing when the pipe cavity is full of the explosive to form the corrugated pipe energy-gathered explosive bag with the annular groove, wherein the corrugated pipe energy-gathered explosive bag is applied to blasting engineering.
During the processing of the corrugated liner 2, different sizes can be selected according to different situations. In order to embody the penetration effect, the number of the annular grooves is more than 2 generally, and the thickness of the circular tube is required to be 0.2 to 2.5mm for ensuring the quality of jet flow. The shape of the liner and the size of the inner and outer diameters are selected according to the diameter of a blast hole or other factors.
The utility model discloses an it is high that it is used for ground blasting explosive energy utilization to gather when powder charge, and the crack of production is many and close, can effectively solve the blasting root end problem. By calculating the hole distance and the loading amount, the crack generated by each shaped charge can be communicated through reasonable design, so that the aim of crushing the stone is fulfilled. After the rock cracks, the overall stress of the rock is redistributed, and a stress concentration effect is generated in the subsequent process to expand the cracks, so that the rock body is finally cracked. In the breaking mode, the explosive load can break the rock without reaching the rock breaking strength, and the dosage can be reduced. Meanwhile, when explosive gas acts on cracks, the rock is subjected to tensile stress, and due to the fact that the tensile strength of the rock is low, the rock is torn and falls off, and the explosive loading can be reduced through the breaking mode. The cost can be saved by reducing the charging amount, and the secondary disaster caused by explosion can be reduced, thereby improving the problems of vibration and pollution.
According to the engineering needs, a big gun hole can use a plurality ofly the utility model discloses an it can the powder charge to gather, through calculating and the size and the throwing place of the steerable rubble of reasonable design size. The requirements of presplitting blasting are met, and the preset target is easy to realize. The ore volume can be controlled in the ore mining process by the method, and the follow-up work such as transportation is convenient. When the reinforced concrete structure is demolished by blasting, the energy-gathered charge can effectively cut the steel bars in the concrete and improve the breaking rate of blasting cuts.
The utility model discloses mainly used is in rock deep hole blasting and the excavation of underground tunnel blasting, also can be used as the excavation of the coal body or other ores. For the deep hole presplitting blasting in coal seams and ore bodies, the size of coal mine excavation can be effectively controlled, the transportation is convenient, and the follow-up work is greatly improved. In the coal mining work, the sudden danger of coal seam gas can be reduced or eliminated, and the life safety and mineral resources of miners are guaranteed. In the shale gas exploitation work, many and dense apertures can be drilled on the rock mass, and the subsequent exploitation work is convenient.
The present invention will be further explained with reference to the drawings and examples.
Example 1:
referring to fig. 3, the inner diameter of the bellows liner is 21.00mm, the height is 50mm, and the pipe material is iron; the wedge-shaped section is 3mm high and 4mm wide. The explosive is 4% glass microsphere sensitized emulsion explosive, and is filled into a corrugated pipe shaped liner and compacted after being uniformly mixed, wherein the density is ensured to be 1.1g/cm3To 1.3g/cm3. The primer 1 without the primary explosive is used for priming in the experiment, and the primer 1 is placed in the center of the face at one end of the shaped charge.
The shaped charge of the embodiment is subjected to a steel plate 5 penetration experiment, the length, the width and the thickness of the steel plate 5 are 100mm, 100mm and 15mm, the penetration depth is 3 to 4mm, the penetration width is 4 to 5mm, and the recess of the steel plate 5 is 1 to 2 mm. There are 5 penetration seams, the penetration on the detonation side is shallower and the penetration on the other side is deeper.
Example 2:
referring to fig. 4, the inner diameter of the bellows liner is 30mm, the height is 50mm, and the pipe material is aluminum; the wedge-shaped section is 5mm high and 10mm wide. The explosive is 4% glass microsphere sensitized emulsion explosive, and is filled into a corrugated pipe shaped liner and compacted after being uniformly mixed, wherein the density is ensured to be 1.1g/cm3To 1.3g/cm3. The primer 1 without the primary explosive is used for priming in the experiment, and the primer 1 is placed in the center of the face at one end of the shaped charge.
The shaped charge of this example was subjected to a steel pipe penetration test, with a steel pipe outer diameter of 57mm, a steel pipe wall thickness of 4mm, and a pipe length of 300 mm. After the test, the steel pipe parallel to the charging position is provided with a narrow bulge, the outer diameter is about 107mm, namely the pipe wall of the steel pipe extends outwards by 25mm, and a tearing crack is formed along the axial direction of the steel pipe.
Example 3:
referring to fig. 3, the inner diameter of the bellows liner is 35mm, the height of the bellows liner is 30mm, and the pipe material is plastic; the wedge-shaped section is 5mm high and 7mm wide. The explosive is 4% glass microsphere sensitized emulsion explosive, and is filled into a corrugated pipe shaped liner and compacted after being uniformly mixed, wherein the density is ensured to be 1.1g/cm3To 1.3g/cm3. The primer 1 without the primary explosive is used for priming in the experiment, and the primer 1 is placed in the center of the face at one end of the shaped charge.
The shaped charge of this example was subjected to a steel plate 5 penetration test, in which the length, width and thickness of the steel plate 5 were 300mm, 100mm and 15mm, the penetration depth was 1 to 2mm, the penetration width was 2 to 3mm, the steel plate 5 did not sag significantly, and there were 5 penetration seams.
Example 4:
referring to fig. 2, the corrugated pipe shaped liner has an outer diameter of 35mm and a height of 30mm, and the pipe material is iron; the height of the wedge-shaped section is 5mm, and the width of the wedge-shaped section is 5 mm; the puncture point angle is 10 degrees and the length is about 3 mm. The explosive is 4% glass microsphere sensitized emulsion explosive, and is filled into a cylindrical plastic bag with the diameter of 30mm and the height of 30mm after being uniformly mixed, and is sealed, and the density is ensured to be 1.1g/cm3To 1.3g/cm3. The corrugated pipe is lengthened, the manufactured medicine strips are loaded when the inner diameter of the corrugated pipe is 30mm, then the plastic bag of the medicine strips of the corrugated pipe is compressed to be punctured, and the corrugated pipe is filled with the explosive. The primer 1 without the primary explosive is used for priming in the experiment, and the primer 1 is placed in the center of the face at one end of the shaped charge.
The shaped charge of this example was subjected to a steel plate 5 penetration test, in which the length, width and thickness of the steel plate 5 were 300mm, 100mm and 15mm, the penetration depth was 1 to 2mm, the penetration width was 2 to 3mm, the steel plate 5 did not sag significantly, and there were 5 penetration seams.
Claims (6)
1. The utility model provides a portable quick charge of flexible folding gathers can device, includes folding bellows shape shaped charge cover of flexible, explosive, ignition, its characterized in that: the deformable folding corrugated pipe shaped liner is a deformable folding corrugated pipe or a pipe body with an inwards concave annular groove; the section of the annular groove is semicircular or wedge-shaped; the energy gathering device forms a compact annular jet flow by utilizing a deformable folding corrugated pipe or an inwards concave annular groove of a pipe body with the inwards concave annular groove; filling explosives in the pipe body; the detonating device is a detonating cord arranged in the middle of the explosive and parallel to the axis, a detonator embedded in the end face of the detonating cord and a detonating tube embedded in the end face of the detonating cord.
2. A transformable folding portable quick-charge energy concentrator as defined in claim 1, wherein: the deformable folded bellows liner can be stretched and contracted.
3. A transformable folding portable quick-charge energy concentrator as defined in claim 1, wherein: the wall thickness of the tube body of the deformable folding corrugated tube shaped liner is 0.2-2.5 mm, and the number of corrugations is not less than 2; the largest width of the corrugated section is not more than half of the largest diameter of the pipe body, the smallest width of the corrugated section is not less than 1mm, the largest height of the opening of the section is not more than half of the largest diameter of the pipe body, the smallest width of the opening of the section is not less than 1mm, the smallest corrugated space of the pipe body is 0, and the corrugated space can be adjusted by practical application.
4. A transformable folding portable quick-charge energy concentrator as defined in claim 1, wherein: the tip of the section of the annular groove of the deformable folding corrugated pipe shaped liner is provided with a puncture point with an angle not larger than 30 degrees, so that the package of the medicine strip can be punctured.
5. A transformable folding portable quick-charge energy concentrator as defined in claim 1, wherein: the deformable folded corrugated pipe shaped liner is provided with an inwards concave annular groove after being stretched, and the section of the groove can be semicircular or wedge-shaped; the filling structure of the explosive can be further optimized to improve the penetration effect.
6. A transformable folding portable quick-charge energy concentrator as defined in claim 1, wherein: the cross section height of the concave annular groove of the deformable folding corrugated pipe shaped liner in the compressed state is h1The outer diameter of the pipe is D and the inner diameter of the pipe is D1Outer diameter d of medicine strip0. The relationship between the height elongation of the corrugated pipe and the size of the liner is
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| CN201822199968.8U CN210070765U (en) | 2018-12-26 | 2018-12-26 | Deformable folding portable quick charging energy-gathering device |
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| CN201822199968.8U CN210070765U (en) | 2018-12-26 | 2018-12-26 | Deformable folding portable quick charging energy-gathering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489512A (en) * | 2018-12-26 | 2019-03-19 | 中国科学技术大学 | A kind of deformable folding portable quick-burning charge energy-gathering device |
| CN111794748A (en) * | 2020-07-13 | 2020-10-20 | 大同煤矿集团有限责任公司 | Method for cutting hard top plate by composite blasting |
-
2018
- 2018-12-26 CN CN201822199968.8U patent/CN210070765U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489512A (en) * | 2018-12-26 | 2019-03-19 | 中国科学技术大学 | A kind of deformable folding portable quick-burning charge energy-gathering device |
| CN111794748A (en) * | 2020-07-13 | 2020-10-20 | 大同煤矿集团有限责任公司 | Method for cutting hard top plate by composite blasting |
| CN111794748B (en) * | 2020-07-13 | 2021-12-31 | 晋能控股煤业集团有限公司 | Method for cutting hard top plate by composite blasting |
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