Air-spaced explosive charging structure and air-spaced explosive charging method

An air spacer and charge technology, which is applied in the field of blasting test, can solve the problems of high price of ordinary air spacers, increase the time of shock wave action, reduce the peak pressure of detonation wave, etc., so as to improve the blasting effect, increase the action time of shock wave and blast low cost effect

Pending Publication Date: 2020-12-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the current problems such as high cost of sand and gravel intervals, poor blasting effect, complicated charge process, and high price of ordinary air spacers, and proposes an air-spaced charge structure and charge method. The explosive process is simple, and the blasting cost is low. Compared with the previous sandstone, bamboo tube or other air spacers, it saves cost and simplifies the charge industry; Opposite shock

Method used

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  • Air-spaced explosive charging structure and air-spaced explosive charging method
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  • Air-spaced explosive charging structure and air-spaced explosive charging method

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Embodiment 1

[0039] Embodiment 1: as figure 1 As shown, an air-spaced charge structure,

[0040] Including the sandstone layer, the sandstone layer is set at the bottom of the blast hole;

[0041] Several layers of charge layers and several layers of spacer layers, the charge layers and spacer layers are arranged alternately, the top of the sandstone layer is provided with charge layers, and the spacer layer is a water bottle air spacer;

[0042] A gun port protector arranged at the gun port;

[0043] A blasting mud packing layer, where the blasting mud packing layer is packed in the blast hole protector of the blast hole;

[0044] The water bottle air spacer includes more than two water bottles and elastic buckles;

[0045] Such as image 3 and 5 As shown, the water bottle air spacer in this embodiment is two water bottles, and the two water bottles are respectively water bottle I and water bottle II. The mouths of water bottle I and water bottle II are opposite and connected by elas...

Embodiment 2

[0054] Embodiment 2: The air-spaced charge structure of this embodiment is basically the same as the air-spaced charge structure of Example 1, the difference is that: the water bottle air spacer is three water bottles, and the three water bottles are respectively water bottle I, water bottle II and water bottle For water bottle III, the mouths of water bottle I and water bottle II are opposite and connected by elastic buckles. The bottom is connected to the upper charge layer (see Figure 6 ).

Embodiment 3

[0055]Embodiment 3: The air-spaced charge structure of this embodiment is basically the same as the air-spaced charge structure of Example 1, the difference being that the water bottle air spacer is four water bottles, and the four water bottles are respectively water bottle I, water bottle II, Water bottle III and water bottle IV, the mouths of water bottle I and water bottle II face each other and are connected by elastic buckles, the bottom of water bottle I connects with the lower charge layer, and the mouths of water bottle III and water bottle IV face each other and are connected by elastic buckles , the bottom of the bottle of water bottle III joins with the bottom of the bottle of water bottle II, and the bottom of the bottle of water bottle IV joins with the upper charge layer (see Figure 7 ).

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Abstract

The invention relates to an air-spaced explosive charging structure and an air-spaced explosive charging method, and belongs to the technical field of blasting. The air-spaced explosive charging structure comprises a gravel layer, a plurality of explosive charging layers, a plurality of spacing layers, a blasthole protector and a stemming filling layer. The gravel layer is arranged at the bottom of a blasthole; the explosive charging layers and the spacing layers are alternately arranged; the explosive charging layers are arranged at the top of the gravel layer; the spacing layers are water bottle air spacers; the blasthole protector is arranged at the blasthole; and the stemming filling layer is arranged in the blast hole protector of the blasthole in a filling manner. According to the air-spaced explosive charging structure, the explosive charging speed is high, the explosive charging process is simple, the blasting cost is low, and the air-spaced space is large; after explosives explode, opposite impact waves are excited in an air column and explosion is carried out in the center of the air column, so that the pressure is increased, and the impulse of stress waves transmitted torock is increased; and meanwhile, shock waves reciprocate and collide repeatedly, the action time of the shock waves is prolonged, detonation wave peak pressure is reduced, a smashing area is reduced, the effective energy utilization rate of explosives is increased, and the blasting effect is improved.

Description

technical field [0001] The invention relates to an air-interval charging structure and a charging method, belonging to the technical field of blasting tests. Background technique [0002] Underground downward large-diameter deep-hole blasting mining technology is more and more favored by underground mining enterprises because of its high recovery efficiency, good safety, and low investment cost, and it is also the development trend of underground mining in the future. When blasting charge, the charge structure is divided into continuous charge and interval charge. Due to the excessive concentration of explosives in continuous charge, the rocks are often broken too much, and the consumption of explosives is large. The interval charging can effectively improve the utilization rate of blasting explosives, reduce the amount of charge, and make the blasting energy evenly distributed on the wall of the blast hole, and the blasting effect is better. [0003] At present, most of t...

Claims

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Application Information

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IPC IPC(8): F42D1/08F42D3/04
CPCF42D1/08F42D3/04
Inventor 李祥龙左庭王建国张智宇黄永辉袁芝斌
Owner KUNMING UNIV OF SCI & TECH
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