Strip mine water hole blasting shaped charge structure
By adopting the energy-concentrating charge structure in the blasting of open-pit mine water holes and using the energy-concentrating device and water medium, the problems of high base generation rate and poor blasting effect in water hole blasting are solved, and more efficient Rock breaking ability and explosive utilization rate.
Patent Information
- Application Number
- CN202420718173.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-09
AI Technical Summary
During the blasting of open-pit mine water holes, the base production rate is high, and the blasting effect is poor, which affects the transportation efficiency of the shovel equipment. The mixing of explosives and silt causes partial failure.
The energy-concentrating charge structure is adopted, including energy-concentrating device, water medium and emulsified explosive section, which isolates the silt and sand through the energy-concentrating device, and uses the energy-concentrating effect of water medium and bubble pulsation to enhance the rock-breaking ability, form energy-concentrating holes, and enhance explosives. Utilization.
It effectively improves the blasting effect, reduces the foundation generation rate, improves the rock breaking ability, and is characterized by safety, labor saving, simplicity and efficiency.
Smart Images
Figure CN222143932U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of blasting engineering and is a concentrated charge structure for water hole blasting in open-pit mines. Background Art
[0002] In open-pit mine water hole blasting, due to the decline in mining level, the number of water-containing blastholes gradually increases, and water affects blasting construction, blasting process design, and the stability of explosives. In addition, the mud and sand at the bottom of the hole are easily mixed with explosives, causing some explosives to fail. The appearance of water holes brings many difficulties to the blasting operation, including an increase in the rate of foundation generation, poor blasting effect, and greatly reduces the transportation efficiency of scraper equipment. Summary of the invention
[0003] The utility model provides an open-pit mine water hole blasting shaped charge structure, which overcomes the deficiencies of the prior art and can effectively solve the problems of high root generation rate and poor blasting effect in water hole blasting.
[0004] The technical solution of the utility model is achieved through the following measures: an open-pit mine water hole blasting shaped charge structure, including a concentrator, a water medium, an emulsion explosive section and a filling section. The interior of the blasting hole is composed of a filling section, an emulsion explosive section, a water medium and a concentrator from top to bottom. The concentrator has an opening at the upper end and a closed lower end, and the interior is a hollow structure. The diameters of the upper and lower ends are equal to the diameter of the blasthole, and the diameter in the middle is half of the diameter of the blasthole, presenting a funnel shape. The emulsion explosive can be filled from the upper end, and an electronic detonator is arranged inside the concentrator. The upper end of the electronic detonator is connected to a detonating cord, and the detonating cord extends to the outside of the blasting hole.
[0005] The following are further improvements and / or optimizations to the above utility model technical solution:
[0006] The above charging method is coupled charging, and can be designed as uncoupled charging.
[0007] The energy concentrator can be made of conductive PVC material.
[0008] The utility model has a reasonable and compact structure and is easy to use. The energy concentrator can isolate the emulsion explosive from the bottom mud and sand of the hole, thereby improving the utilization rate of the explosive. The emulsion explosive can form an energy concentrating hole during blasting, which can fully utilize the energy conversion effect of the water medium, the bubble pulsation phenomenon and the "water wedge" effect, so that the maximum principal stress of the rock mass is enhanced, the rock breaking ability is improved, and the foundation problem is solved. It has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG1 is a schematic structural diagram of an embodiment.
[0010] Attached Figure 2 For attachment Figure 1Schematic diagram of a partial enlarged cross-section of the central energy concentrator.
[0011] The codes in the attached drawings are: 11 is a step, 12 is a filling section, 13 is an emulsion explosive section, 14 is a blasting hole, 21 is a water medium, 22 is an energy concentrator, 23 is a detonating cord, and 24 is an electronic detonator. 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] The present invention is further described below in conjunction with the embodiments and drawings:
[0014] As attached Figure 1 , 2 As shown, the shaped charge structure for water hole blasting in an open-pit mine includes a filling section 12, an emulsion explosive section 13, a water medium 21 and a concentrator 22. The interior of the blasting hole 14 is composed of the filling section 12, the emulsion explosive section 13, the water medium 21 and the concentrator 22 from top to bottom. An electronic detonator 24 is provided on the inner side of the concentrator. A detonating cord 23 is connected to the upper end of the detonator, and the detonating cord extends to the outside of the blasting hole 14.
[0015] During the on-site operation, a blasting hole 14 is set in the area to be blasted in the mining area, a concentrator 22 is placed at the lower end of the blasting hole 14, an electronic detonator 24 is placed in the concentrator 22, and a detonating cord 23 is connected, and the detonating cord 23 extends to the outside of the blasting hole 14. Then, the emulsion explosive is placed in the emulsion explosive section 13, a coupling charge is used, and finally the filling end 12 is filled with a filling material.
[0016] In this embodiment, the energy concentrator can isolate the emulsion explosive from the bottom mud and sand of the hole, and the emulsion explosive can form an energy concentrating hole during blasting. The energy conversion effect of the water medium, the bubble pulsation phenomenon and the "water wedge" effect are used to effectively improve the utilization rate of the explosive, so that the maximum force on the rock mass is enhanced and the rock breaking ability is improved. It solves the fundamental problem and has the characteristics of safety, labor saving, simplicity and high efficiency.
[0017] 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 water hole blasting in an open-pit mine, characterized in that It includes an energy concentrator, an electronic detonator, a water medium, an emulsion explosive section and a filling section. The inside of the blasting hole is composed of a filling section, an emulsion explosive section, a water medium and an energy concentrator from top to bottom. An electronic detonator is arranged inside the energy concentrator. The upper end of the electronic detonator is connected with a detonating cord, which extends to the outside of the blasting hole. The energy concentrator is thick at both ends and thin in the middle, with a closed lower end and an open upper end.
2. The open-pit mine water hole blasting shaped charge structure according to claim 1 is characterized in that A water medium exists around the concentrator.
3. The open-pit mine water hole blasting shaped charge structure according to claim 1 or 2, characterized in that The concentrator is made of conductive PVC material.