Strip mine deep hole blasting shaped charge structure

Abstract

The utility model relates to the technical field of mining blasting, in particular to a strip mine deep hole blasting shaped charge structure which comprises a blasting body, a filling section, a first charge section, a second charge section, a first air spacer and a second air spacer, and a blasting hole is formed in the upper end of the blasting body. The first charging section and the second charging section are arranged at an interval, and the cone-shaped energy gathering device is arranged at the lower part of the second charging section, so that an energy gathering cavity is formed when explosives are blasted, the energy of the explosives is gathered on the axis of the energy gathering cavity to form energy gathering flow, and the utilization rate of the explosives is effectively improved; the interaction force between the energy generated during explosive explosion and the hole wall is obviously reduced, the energy loss is reduced, the blasting cost can be greatly reduced, the problems that the explosive energy is not concentrated enough and the penetrating power is small in an existing sealed strip mine deep hole blasting shaped charge structure can be effectively solved, and the sealed strip mine deep hole blasting shaped charge structure has the characteristics of being safe, labor-saving, simple, convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of mining blasting, and is a concentrated charge structure for deep hole blasting in open-pit mines. Background Art

[0002] In the process of open-pit mining, blasting technology has been widely used. When using blasting technology, the technology should be designed and optimized according to the engineering environment. The traditional charging structure is to charge the lower part of the blasthole, fill the upper part with fillers, and concentrate the explosives in the lower part of the blasthole. However, the existing charging structure has a low overall utilization rate of explosive energy, and the explosive energy is not concentrated enough, the penetration is small, the large block output rate is high, and the blasting effect is not ideal. Summary of the invention

[0003] The utility model provides an open-pit mine deep hole blasting shaped charge structure, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of insufficient concentration of explosive energy and low penetration in the existing sealed open-pit mine deep hole blasting shaped charge structure.

[0004] The technical solution of the utility model is achieved through the following measures: an open-pit mine deep hole blasting shaped charge structure, comprising a blasting body, a filling section, a first charging section, a second charging section, a first air spacer and a second air spacer, a blasting hole is arranged at the upper end of the blasting body, and the filling section, the first charging section, the first air spacer, the second charging section and the second air spacer are arranged in sequence inside the blasting hole from top to bottom, detonators are arranged on the inner sides of the first charging section and the second charging section, each detonator is connected to a detonator leg line at the upper end, and the upper end of each detonator leg line extends to the outside of the blasting hole, and a concentrator is arranged at the lower part of the second charging section, and the structure of the concentrator is a cone.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] The cone angle of the above-mentioned energy concentrator can be 70° to 85°.

[0007] The volume of the second charge section may be greater than the volume of the first charge section.

[0008] The energy concentrator can be made of PVC material.

[0009] The utility model has a reasonable and compact structure and is easy to use. The first charging section and the second charging section are spaced apart by a first air spacer and a second air spacer, and a concentrator in the shape of a cone is arranged at the lower part of the second charging section, so that the explosive forms an energy concentrating hole during blasting, and the energy of the explosive is gathered on the axis of the energy concentrating hole to form an energy concentrating flow, which effectively improves the utilization rate of the explosive, and significantly reduces the interaction force between the energy generated by the explosion of the explosive and the hole wall, thereby reducing energy loss and greatly reducing the blasting cost. It can effectively solve the problems of insufficient concentration of explosive energy and small penetration force in the existing sealed open-pit mine deep hole blasting energy concentrating charging structure, and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 This is a schematic diagram of the main perspective structure of the first embodiment.

[0011] The codes in the accompanying drawings are: 1 is the blasting hole, 2 is the filling section, 3 is the first charging section, 4 is the first air spacer, 5 is the second charging section, 6 is the energy concentrator, 7 is the second air spacer, 8 is the detonator, 9 is the detonator leg line, and 10 is the blasting body. DETAILED DESCRIPTION

[0012] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0013] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0014] The present invention is further described below in conjunction with the embodiments and drawings:

[0015] Embodiment 1, as attached Figure 1 As shown, the open-pit mine deep hole blasting shaped charge structure includes a blasting body 10, a filling section 2, a first charging section 3, a second charging section 5, a first air spacer 4 and a second air spacer 7. A blasting hole 1 is provided at the upper end of the blasting body 10. The filling section 2, the first charging section 3, the first air spacer 4, the second charging section 5 and the second air spacer 7 are arranged in sequence from top to bottom in the blasting hole 1. Detonators 8 are arranged on the inner sides of the first charging section 3 and the second charging section 5. A detonator leg line 9 is connected to the upper end of each detonator 8. The upper end of each detonator leg line 9 extends to the outside of the blasting hole 1. A concentrator 6 is provided at the lower part of the second charging section 5. The structure of the concentrator 6 is a cone.

[0016] The detonator 8 is an existing well-known electronic detonator; the blasting body 10 can be prefabricated in a factory, or the area to be blasted in the mining area can be used as the blasting body 10, a blasting hole 1 is set in the area to be blasted in the mining area, and a second air spacer 7 is placed at the lower end of the blasting hole 1. After placing the energy concentrator 6 on the upper end of the second air spacer 7, the first detonator 8 is placed in the second charging section 5 and fills the second charging section 5. After placing the first air spacer 4 on the upper end of the second charging section 5, the second detonator 8 is placed in the first charging section 3 and fills the first charging section 3. The upper end of each detonator 8 is connected to a detonator leg line 9, and the upper end of each detonator leg line 9 extends to the outside of the blasting hole 1 and is connected to an external detonator. Finally, the filling material is used to fill the filling section 2.

[0017] In this embodiment, the first charging section 3 and the second charging section 5 are spaced apart by the first air spacer 4 and the second air spacer 7, and a concentrator 6 in the shape of a cone is arranged at the lower part of the second charging section 5, so that the explosive forms an energy focusing hole during blasting, and the energy of the explosive is gathered on the axis of the energy focusing hole to form an energy focusing flow, which effectively improves the utilization rate of the explosive, and significantly reduces the interaction force between the energy generated by the explosion of the explosive and the hole wall, thereby reducing energy loss and greatly reducing the blasting cost. It can effectively solve the problems of insufficient concentration of explosive energy and low penetration power in the existing sealed open-pit mine deep hole blasting energy focusing charge structure.

[0018] The above-mentioned shaped charge structure for deep hole blasting in open-pit mines can be further optimized and / or improved according to actual needs:

[0019] Embodiment 2, as attached Figure 1 As shown, this embodiment is a further optimization of the above embodiment, and the cone angle of the energy concentrator 6 is 70° to 85°. Preferably, when the cone angle of the energy concentrator 6 is 80°, the energy concentrator 6 has the best energy concentrating effect.

[0020] Embodiment 3, as attached Figure 1 As shown, this embodiment is a further optimization of the above embodiment. The volume of the second charging section 5 is 2 to 3 times the volume of the first charging section 3, which can effectively improve the blasting effect.

[0021] Embodiment 4, as attached Figure 1 As shown, this embodiment is a further optimization of the above embodiment, and the energy concentrator 6 is made of PVC material, which can effectively reduce the manufacturing cost of the energy concentrator 6.

[0022] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A shaped charge structure for deep hole blasting in open pit mines, characterized in that It includes an explosive body, a filling section, a first charging section, a second charging section, a first air spacer and a second air spacer. A blasting hole is arranged at the upper end of the explosive body. The filling section, the first charging section, the first air spacer, the second charging section and the second air spacer are arranged in sequence from top to bottom in the blasting hole. Detonators are arranged on the inner sides of the first charging section and the second charging section. A detonator leg line is connected to the upper end of each detonator. The upper end of each detonator leg line extends to the outside of the blasting hole. An energy concentrator is arranged at the lower part of the second charging section. The structure of the energy concentrator is a cone.

2. The open-pit mine deep hole blasting shaped charge structure according to claim 1 is characterized in that The cone angle of the concentrator is 70° to 85°.

3. The open-pit mine deep hole blasting shaped charge structure according to claim 1 or 2, characterized in that The volume of the second powder-loading section is greater than the volume of the first powder-loading section.

4. The open-pit mine deep hole blasting shaped charge structure according to claim 1 or 2, characterized in that The energy concentrator is made of PVC material.

5. The open-pit mine deep hole blasting shaped charge structure according to claim 3 is characterized in that The energy concentrator is made of PVC material.

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