CN215064143U - Auxiliary device for smooth surface hole blasting charging - Google Patents
Auxiliary device for smooth surface hole blasting charging Download PDFInfo
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- CN215064143U CN215064143U CN202121100467.5U CN202121100467U CN215064143U CN 215064143 U CN215064143 U CN 215064143U CN 202121100467 U CN202121100467 U CN 202121100467U CN 215064143 U CN215064143 U CN 215064143U
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Abstract
The utility model relates to a tunnel boring technical field particularly relates to an auxiliary device that is used for smooth surface hole blasting powder charge, include: the explosive-charging device comprises two arc-shaped plates, wherein the concave surfaces of the two arc-shaped plates are oppositely arranged, gaps are formed at the edges of the two arc-shaped plates, and explosive-charging spaces for containing explosives are formed at the inner sides of the two arc-shaped plates; the positioning block is arranged to be clamped between the gaps of the two arc-shaped plates, so that the distance between the two arc-shaped plates is relatively fixed; the outer edge of the positioning block is arranged to be attached to the arc surface of the inner wall of the cut hole. The utility model discloses use two arcs as the main part, the locating piece is as the supporting component of main part, simple structure, the powder charge of being convenient for, two inboard formation of arcs hold the chamber of placing the explosive to form through the clearance between the arcs and gather the energy groove, form the pre-splitting seam on the pore wall during the explosion, and through not coupling powder charge, can avoid the explosive to be destroyed with the pre-splitting face that the pore wall direct contact caused, improve the plain noodles effect.
Description
Technical Field
The utility model relates to a tunnel boring technical field particularly relates to an auxiliary device that is used for smooth surface hole blasting powder charge.
Background
With the development of blasting technology, uncoupled charging has been widely used. Due to the technical requirements of smooth blasting, the design of linear explosive loading density is often realized by adopting small-diameter explosive cartridges or uncoupled explosive loading, so as to achieve the presplitting blasting effect. Compared with coupled charging, the non-coupled charging reduces the energy consumption of the rock crushing zone, effectively prolongs the time of the explosive acting on the rock, and realizes the full utilization of the energy; besides, the noise and vibration generated in blasting can be effectively reduced.
The currently available uncoupled charge aids use a split barrel section, the middle of which contains the explosive, and which, due to its relatively regular cylindrical shape on the outside, places greater demands on the diameter and smoothness of the drilled hole, and in practice it is not easy to charge and load the hole.
Prior art documents:
patent document 1: CN206459574U blasting hole radial uncoupled charging connector
Patent document 2: CN208282687U water pressure blasting radial uncoupled charging water bag
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an auxiliary device for smooth surface hole blasting powder charge can be convenient for put the central point in blast hole with the dress of explosive decoupling between two parties and put to can provide the energy release clearance, gather the energy blasting, have better smooth surface effect.
In order to achieve the above object, the utility model provides an auxiliary device for smooth surface hole blasting powder charge, include:
the explosive-charging device comprises two arc-shaped plates, wherein the concave surfaces of the two arc-shaped plates are oppositely arranged, gaps are formed at the edges of the two arc-shaped plates, and explosive-charging spaces for containing explosives are formed at the inner sides of the two arc-shaped plates;
the positioning block is arranged to be clamped between the gaps of the two arc-shaped plates, so that the distance between the two arc-shaped plates is relatively fixed;
the outer edge of the positioning block is arranged to be attached to the arc surface of the inner wall of the cut hole, so that the powder charging space is located in the middle of the cut hole.
Preferably, the profile of the two arc-shaped plates after being spliced is cylindrical.
Preferably, the locating piece is provided with a concave part, and the edges of the arc-shaped plates are clamped in the concave part and used for limiting the approach of the two arc-shaped plates.
Preferably, the inner edge of the positioning block is provided with a limiting part which is attached to and contacted with the inner wall of the arc-shaped plate and used for limiting the separation of the two arc-shaped plates.
Preferably, the inner wall of the arc-shaped plate is coated with an explosion-proof coating.
Preferably, the width of the gap is 1/5 of the diameter width.
Preferably, the number of the positioning blocks is at least four, the first positioning block and the second positioning block are located in two gaps at the first end of the arc-shaped plate, and the third positioning block and the fourth positioning block are located in two gaps at the second end of the arc-shaped plate.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses simple structure uses two arcs as the main part, and the locating piece is as the support component of main part, simple structure to be convenient for loading of powder charge and device, the appearance chamber of explosive is placed in two inboard formation of arcs to clearance formation through between the arcs can the groove, forms the pre-splitting on the pore wall during the explosion, and through the non-coupling powder charge, can avoid the pre-splitting face that explosive and pore wall direct contact caused to be destroyed, improves plain noodles effect.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a perspective view of the auxiliary device for smooth hole blasting charging of the present invention;
FIG. 2 is an elevation view of the present invention auxiliary device for smooth hole blasting charge;
figure 3 is a side view of the present invention of an auxiliary device for smooth hole blasting charge.
Detailed Description
For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways with any of the assistance devices for a smooth-faced hole-blasting charge, as the disclosed concepts and embodiments are not limited to any embodiment. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.
In the smooth blasting, the purpose obtains a good presplitting profile, and ordinary charging mode is because explosive and pore wall direct contact, behind the difficult control explosive explosion, whether the presplitting profile is the expectation, consequently adopts the non-coupling powder charge more often to reduce the influence of explosive to the presplitting profile, but present non-coupling powder charge device is high to the requirement of the precision of punching, loads the inconvenience, and this is that the staff does not want to see, the utility model discloses aim at realizing, provide a simple structure, easily processing preparation, be convenient for simultaneously load the auxiliary device of explosive to can provide and gather the blasting incision, play better smooth surface effect in smooth blasting.
The embodiment provides an auxiliary device for smooth surface hole blasting charging, which comprises two arc-shaped plates 1 and a positioning block 2. The two arc plates 1 are arranged in a concave opposite way to form a hollow cylinder with an axial cutting seam.
Referring to fig. 1-3, the concave surfaces of the two arc-shaped plates 1 are arranged oppositely, the edges of the two arc-shaped plates 1 are provided with gaps 11, and the inner sides of the two arc-shaped plates 1 form a explosive charging space 101 for containing explosive. The positioning block 2 is set to be clamped between the gaps 11 of the two arc-shaped plates 1, so that the distance between the two arc-shaped plates 1 is relatively fixed.
Specifically, the concave surfaces of two arc-shaped plates 1 are opposite, a gap 11 is reserved in the middle of the arc-shaped plates, four positioning blocks 2 are respectively arranged in the gaps 11 at two ends of each arc-shaped plate 1, the two arc-shaped plates 1 are kept to be relatively fixed, explosive is filled into an explosive filling space 101 between the two arc-shaped plates 1, and then the explosive filling device is placed in a drilling hole, so that the positioning blocks 2 are attached to the inner wall of the hole, and the positioning blocks 2 face to the axes of two adjacent holes according to the outline required by blasting.
Furthermore, the outer edge 21 of the positioning block 2 is arranged to be attached to the arc surface of the inner wall of the cut hole, so that the powder charging space is located in the middle of the cut hole. In an alternative embodiment, the positioning block 2 is provided with elasticity, for example, foam, pearl wool, sponge or rubber, etc., so that the arc-shaped plate 1 can be stably placed in the middle of the drilling hole even if the inner wall of the undercut hole is not smooth enough.
As shown in fig. 1, in a preferred example, the two arc plates 1 are joined together to form a cylindrical shape, so that a cylindrical explosive can be loaded, after the explosive explodes, detonation products move at high speed in the direction of the connecting line of the two gaps 11 and generate stress concentration, high-energy jet flow formed by the products first acts on the hole wall in the direction of the gaps 11, a rock body starts to crack along the connecting line of blast holes to form a final pre-crack, and due to the strength of the arc plates 1 and the existence of air decoupling media, certain buffering and inhibiting effects are provided for energy generated in the explosion process, the destructive effect of stress on the hole walls of the blast holes on two sides is reduced, the stability of surrounding rocks is well protected, and a smooth pre-crack surface is formed.
As shown in fig. 1, in a preferred example, the positioning block 2 is provided with a recess 22, wherein the recess 22 is configured to have a bottom width consistent with the thickness of the arc plate 1, two sides limit the arc plate 1, and the edge of the arc plate 1 is clamped in the recess 22 to limit the approach of the two arc plates 1. The inner edge of the positioning block 2 is provided with a limiting part 23 which is contacted with the inner wall of the arc-shaped plate 1 in a sticking way, wherein the limiting part is used for limiting the separation of the two arc-shaped plates 1.
In this way, the two arc-shaped plates 1 are fixed to each other, neither being separated from each other nor being close to each other.
In an alternative embodiment, the two curved plates 1 are made of PVC pipe, with two gaps 11 cut out along the axis. The width of the gap 11 is 1/5 the diameter width.
In other embodiments, if the length of the arc plate 1 is too long, the cutting slit may be discontinuous, and a certain length of cutting slit is cut from the two ends to the middle to avoid structural deformation.
In an alternative embodiment, at least four positioning blocks 2 are provided, the first positioning block and the second positioning block are located in two gaps at the first end of the arc plate 1, and the third positioning block and the fourth positioning block are located in two gaps at the second end of the arc plate 1. In this way, the arc 1 can be kept in the middle position of the drilling.
Further, in order to prevent the charge from damaging the gap 11 during explosion and thereby affecting the final blasting effect, the inner wall of the arc-shaped plate 1 is coated with an explosion-proof coating, which is a polyurethane layer or a polyurea layer.
Combine above embodiment, the utility model discloses simple structure is reliable, constitute the body by two arcs 1, locating piece 2 carries on spacingly and supports, it is downthehole together to put into the big gun behind the space of arc 1 to install the cartridge bag additional, it is unanimous with two hole line directions to make 11 opening directions in clearance, when the explosive explosion, detonation product is high-speed motion in 11 line directions in clearance, and produce stress concentration, the high energy efflux that the result formed at first acts on the pore wall in 11 directions in clearance, the rock mass begins to break along the big gun hole line, form final prefracture. In addition, due to the fact that the strength of the pipe wall and the existence of air decoupling media have certain buffering and inhibiting effects on energy generated in the explosion process, the damage effect of stress on the hole walls of the two sides is reduced, the stability of surrounding rocks is well protected, and a smooth pre-crack surface is formed.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (7)
1. An auxiliary device for smooth hole blasting charge, comprising:
the explosive-charging device comprises two arc-shaped plates, wherein the concave surfaces of the two arc-shaped plates are oppositely arranged, gaps are formed at the edges of the two arc-shaped plates, and explosive-charging spaces for containing explosives are formed at the inner sides of the two arc-shaped plates;
the positioning block is arranged to be clamped between the gaps of the two arc-shaped plates, so that the distance between the two arc-shaped plates is relatively fixed;
the outer edge of the positioning block is arranged to be attached to the arc surface of the inner wall of the blast hole, so that the charging space is located in the middle of the blast hole.
2. An aid for a smooth-faced hole blasting charge according to claim 1 in which the two arcuate plates are joined to form a cylindrical profile.
3. The auxiliary device for a smooth hole blasting charge according to claim 1, wherein the positioning block is provided with a recess, and the edges of the arc-shaped plates are clamped in the recess to limit the approach of the two arc-shaped plates.
4. The auxiliary device for smooth hole blasting charge of claim 1, wherein the inner edge of the positioning block is provided with a limiting part which is attached to the inner wall of the arc-shaped plate for limiting the two arc-shaped plates from separating.
5. An auxiliary device for a smooth-faced hole blasting charge according to claim 1, wherein the inner wall of the arcuate plate is coated with an explosion-proof coating.
6. An aid for a smooth-faced blasting charge according to any of claims 1 to 5 wherein the gap is 1/5 diametrically wide.
7. The device as claimed in claim 6, wherein the number of the positioning blocks is at least four, the first and second positioning blocks are located in the two gaps of the first end of the arc plate, and the third and fourth positioning blocks are located in the two gaps of the second end of the arc plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121100467.5U CN215064143U (en) | 2021-05-21 | 2021-05-21 | Auxiliary device for smooth surface hole blasting charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121100467.5U CN215064143U (en) | 2021-05-21 | 2021-05-21 | Auxiliary device for smooth surface hole blasting charging |
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| Publication Number | Publication Date |
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| CN215064143U true CN215064143U (en) | 2021-12-07 |
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| CN202121100467.5U Active CN215064143U (en) | 2021-05-21 | 2021-05-21 | Auxiliary device for smooth surface hole blasting charging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646245A (en) * | 2022-05-06 | 2022-06-21 | 安徽理工大学 | Tension type energy-gathering blasting device |
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2021
- 2021-05-21 CN CN202121100467.5U patent/CN215064143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646245A (en) * | 2022-05-06 | 2022-06-21 | 安徽理工大学 | Tension type energy-gathering blasting device |
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