Shaped charge tube

Abstract

The utility model relates to the technical field of blasting equipment provides a kind of energy-gathering explosive tube, comprising: elliptical cylinder pipe body, two energy-gathering grooves are structured on the outer circumferential wall of elliptical cylinder pipe body, energy-gathering groove extends along the length direction of elliptical cylinder pipe body, one of energy-gathering groove is located at the long axis of elliptical cylinder pipe body one end, another energy-gathering groove is located at the long axis of elliptical cylinder pipe body other end.The energy-gathering explosive tube of the utility model, by setting elliptical cylinder pipe body, and setting one energy-gathering groove at the both ends of the long axis of elliptical cylinder pipe body, after inserting elliptical cylinder pipe body in blast hole, only need to aim energy-gathering groove at the direction of rock mass needing to be destroyed, most of the blasting energy can be guided to energy-gathering groove position, so as to make the rock mass of corresponding position crack, realize directional fracture, improve blasting efficiency, improve blasting effect, effectively solve the problem that the blasting energy produced by the blasting device in the prior art is not concentrated, and the blasting effect is poor.

Description

Technical Field

[0001] This utility model relates to the field of blasting equipment technology, and in particular to a shaped charge blasting tube. Background Technology

[0002] shaped charge blasting technology is widely used in blasting operations for mining, tunnel excavation, and road construction. However, traditional shaped charge blasting devices suffer from unsatisfactory blasting effects and low efficiency during roof-cutting and pressure-relief blasting. For example, some devices cannot control the blasting direction and energy release, resulting in dispersed blasting energy and failing to effectively achieve the roof-cutting and pressure-relief objective, thus increasing project costs and construction time. Utility Model Content

[0003] This invention provides a shaped charge blasting tube to solve the problem of unconcentrated blasting energy and poor blasting effect in existing blasting devices.

[0004] This utility model provides a shaped charge bursting tube, comprising:

[0005] An elliptical cylindrical tube has two energy-concentrating grooves constructed on its outer peripheral wall. The energy-concentrating grooves extend along the length of the elliptical cylindrical tube, with one energy-concentrating groove located at one end of the major axis of the elliptical cylindrical tube and the other energy-concentrating groove located at the other end of the major axis of the elliptical cylindrical tube.

[0006] According to the energy-concentrating bursting tube of this utility model, the energy-concentrating groove is a V-shaped groove.

[0007] According to the shaped charge bursting tube of this utility model, the major axis of the elliptical cylindrical tube body is not less than 60mm and less than 70mm.

[0008] According to the shaped charge bursting tube of this utility model, the minor axis of the elliptical cylindrical tube body is not less than 45mm and not more than 55mm.

[0009] According to the energy-concentrating blasting tube of this utility model, the distance between the tips of the two energy-concentrating grooves is not less than 30mm and not more than 40mm; the angle between the two groove walls of the two energy-concentrating grooves is not less than 60° and not more than 70°.

[0010] According to the shaped charge bursting tube of this utility model, the wall thickness of the elliptical cylindrical tube is less than 1 mm and does not exceed 3 mm.

[0011] According to the energy-concentrating blasting tube of this utility model, the elliptical cylindrical tube body is a PVC pipe.

[0012] This utility model's shaped charge blasting tube, by setting an elliptical cylindrical tube body and setting an energy-concentrating groove at each end of the major axis of the elliptical cylindrical tube body, after the elliptical cylindrical tube body is inserted into the blast hole, only needs to align the energy-concentrating groove with the direction of the rock mass to be destroyed, so that most of the blasting energy can be guided to the energy-concentrating groove position, so as to cause the rock mass at the corresponding position to crack, achieve directional fracturing, improve blasting efficiency, improve blasting effect, and effectively solve the problem of non-concentrated blasting energy and poor blasting effect generated by existing blasting devices. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the shaped charge bursting tube provided in this embodiment of the utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of the shaped charge bursting tube provided in this embodiment of the utility model.

[0016] Figure label:

[0017] 1. Elliptical cylindrical tube;

[0018] 2. Concentrating energy tank. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The following is combined with Figures 1-2 This invention describes the shaped charge bursting tube.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a shaped charge blasting tube, including: an elliptical cylindrical tube body 1, with two shaped charge grooves 2 constructed on the outer peripheral wall of the elliptical cylindrical tube body 1. The shaped charge grooves 2 extend along the length direction of the elliptical cylindrical tube body 1, with one shaped charge groove 2 located at one end of the major axis of the elliptical cylindrical tube body 1 and the other shaped charge groove 2 located at the other end of the major axis of the elliptical cylindrical tube body 1.

[0022] In this embodiment, the elliptical cylindrical tube 1 is used to contain explosives and is placed in the borehole for blasting. This embodiment sets the main structure of the shaped charge blasting tube as an elliptical cylinder and sets an energy-concentrating groove 2 at each end of the major axis of the elliptical cylindrical tube 1. Before detonation, the groove opening of the energy-concentrating groove 2 can be aligned with the direction of the rock mass to be destroyed. After the explosives in the elliptical cylindrical tube 1 are detonated, shock waves will be released to the tube wall. When the shock waves propagate to the arc-shaped tube wall near the minor axis of the elliptical cylindrical tube 1, they are constrained by the tube wall. The borehole wall bears relatively uniform compressive stress at these positions. The energy-concentrating grooves 2 at both ends of the major axis of the elliptical cylindrical tube 1 are the structural weak points of the entire tube wall. During the explosion, the borehole can experience tensile stress concentration at the corresponding energy-concentrating groove 2 position. Finally, the borehole wall cracks in the major axis direction because the tensile stress exceeds the strength of the rock mass, forming a directional fracture, thereby improving the blasting efficiency and achieving a good shaped charge blasting effect.

[0023] This utility model's shaped charge blasting tube, by setting an elliptical cylindrical tube body 1 and setting an energy-concentrating groove 2 at each end of the major axis of the elliptical cylindrical tube body 1, after inserting the elliptical cylindrical tube body 1 into the blast hole, only needs to align the energy-concentrating groove 2 with the direction of the rock mass to be destroyed, so that most of the blasting energy can be guided to the position of the energy-concentrating groove 2, so as to cause the rock mass at the corresponding position to crack, achieve directional fracturing, improve blasting efficiency, improve blasting effect, and effectively solve the problem of non-concentrated blasting energy and poor blasting effect generated by the blasting device in the prior art.

[0024] In some embodiments, such as Figure 1 and Figure 2 As shown, the energy-concentrating trough 2 is a V-shaped trough.

[0025] In this embodiment, by setting the energy-concentrating groove 2 as a V-shaped groove, the tip of the V-shaped groove has a better guiding effect on blasting energy and a better concentration effect on tensile stress during blasting, and a better directional destruction effect on the cracked rock mass, thus further improving blasting efficiency.

[0026] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the V-shaped groove is axisymmetric about the elliptical cylindrical tube 1.

[0027] Specifically, in some embodiments, the major axis of the elliptical cylindrical tube 1 is not less than 60 mm and is less than 70 mm.

[0028] Understandably, the borehole diameter is typically 70mm during actual blasting. In this embodiment, the major axis of the elliptical cylindrical tube 1 is designed to be no less than 60mm and less than 70mm, allowing the elliptical cylindrical tube 1 to be easily inserted into the borehole while ensuring the amount of explosive charge inside the elliptical cylindrical tube 1 to guarantee the blasting effect.

[0029] Specifically, in some embodiments, the minor axis of the elliptical cylindrical tube 1 is not less than 45 mm and does not exceed 55 mm.

[0030] In this embodiment, the minor axis of the elliptical cylindrical tube 1 is designed to be no less than 45mm and no more than 55mm, which further ensures the amount of explosive charge inside the elliptical cylindrical tube 1, so as to ensure that the blasting power and effect can meet the construction requirements.

[0031] In some embodiments, the distance between the tips of the two energy-concentrating grooves 2 is not less than 30 mm and not more than 40 mm. The angle between the two groove walls of the two energy-concentrating grooves 2 is not less than 60° and not more than 70°.

[0032] In this embodiment, by reasonably setting the size and angle of the shaped charge trough 2, the shaped charge trough 2 can better concentrate the blasting energy and achieve directional blasting, while minimizing the impact of the shaped charge trough 2 on the explosive charge inside the elliptical cylindrical tube 1.

[0033] In some embodiments, the wall thickness of the elliptical cylindrical tube 1 is less than 1 mm and does not exceed 3 mm.

[0034] Optionally, in some embodiments, the elliptical cylindrical tube 1 is made of PVC (Polyvinyl chloride). PVC material has excellent chemical stability, resisting corrosion from chemicals such as acids, alkalis, and salts, and is not easily affected by the humid underground environment, groundwater, or corrosive components in the rock. PVC material is soft and has a certain degree of elasticity, allowing it to fit tightly against the borehole wall, ensuring good sealing between the blasting tube and the borehole, preventing gas leakage during explosive detonation, improving the utilization rate of explosive energy, and enhancing the blasting effect.

[0035] In one specific embodiment, the elliptical cylindrical tube 1 is a PVC pipe with a major axis length of 62 mm, a minor axis length of 50 mm, and a wall thickness of 2 mm. A V-shaped groove is formed at each end of the major axis of the elliptical cylindrical tube 1, the distance between the tips of the two V-shaped grooves is 40 mm, and the angle between the two groove walls is 66°.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shaped charge, characterized by, include: An elliptical cylindrical tube has two energy-concentrating grooves constructed on its outer peripheral wall. The energy-concentrating grooves extend along the length of the elliptical cylindrical tube, with one energy-concentrating groove located at one end of the major axis of the elliptical cylindrical tube and the other energy-concentrating groove located at the other end of the major axis of the elliptical cylindrical tube.

2. The shaped charge of claim 1, wherein, The energy-concentrating trough is a V-shaped trough.

3. The shaped charge of claim 2, wherein, The major axis of the elliptical cylindrical tube is not less than 60mm and is less than 70mm.

4. The shaped charge of claim 2, wherein, The minor axis of the elliptical cylindrical tube is not less than 45mm and not more than 55mm.

5. The shaped charge of claim 2, wherein, The distance between the tips of the two energy-concentrating troughs shall be no less than 30 mm and no more than 40 mm; the angle between the two walls of the two energy-concentrating troughs shall be no less than 60° and no more than 70°.

6. The shaped charge of claim 2, wherein, The wall thickness of the elliptical cylindrical tube is less than 1 mm and does not exceed 3 mm.

7. The shaped charge bursting tube according to claim 1, characterized in that, The elliptical cylindrical tube is a PVC pipe.

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