Strip mine deep hole ditch digging detonation method

An open-pit mine and deep-hole technology, which is applied in the mining, blasting, and earthwork drilling of open-pit mines, can solve the problems of reducing blasting efficiency, reducing blasting area, and increasing blasting costs, so as to improve blasting quality and mining efficiency. Effect

Inactive Publication Date: 2020-05-29
BENGANG STEEL PLATES
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AI Technical Summary

Problems solved by technology

[0002] The history of deep hole blasting in open-pit mines is long, and there are many problems in trench digging blasting, often with large after-blasting problems, which also cause great waste in terms of blasting efficiency and blasting costs
[0003] In order to solve the above technical problems, the existing blasting technology adopts the method of reducing hole network parameters, but this will reduce the blasting efficiency and increase the blasting cost; figure 1 , 6 rows, 8 holes in each row) calculation, according to the original parameters, the blasting area is 6 rows, 7 meters in each row, the row length is 6×7=42m, 8 holes in each row, 7 spacing, the length is 7×7=49m , the total area is (6×7)×(7×7)=2058m2, the blasting area is (6×6.5)×(7×6.5)=1774.5m2 according to the parameters of the reduced hole network, and the blasting area is reduced by 283.5m2

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  • Strip mine deep hole ditch digging detonation method
  • Strip mine deep hole ditch digging detonation method
  • Strip mine deep hole ditch digging detonation method

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Embodiment Construction

[0012] Explanation of terms:

[0013] Ditto: A horizontal trench excavated in an open-pit mine to establish a bench or the initial working line of a bench. Ditch opening in open-pit mines is a preparation project for open-pit mining.

[0014] Open-pit mining: the operation form of mining metal ore, coal and other non-metallic ore deposits from the surface through downward step stripping.

[0015] Explosion area: the scope of the explosion area.

[0016] Step Height: The vertical distance between the bottom face of a step and the plane of the top of the step.

[0017] Ditch: A trench excavated for the establishment of a bench line.

[0018] (Bunker Hole) Row Distance: The distance between rows of gun holes.

[0019] (Bunker Hole) Hole Distance: The distance between the blast hole and the hole.

[0020] The V-shaped detonation sequence refers to a detonation sequence in which the single blast hole in the middle is blasted first, and the blast holes on the two wings are blas...

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Abstract

The invention discloses a strip mine deep hole ditch digging detonation method. The distance between two lines of holes in the middle of a detonation area is smaller than the line distance by 0.8-1 m;the V-shaped double-groove-bottom form is adopted in the two lines of the middle according to the detonation sequence; and the V-shaped double-groove-bottom form is a detonation sequence that middletwo blast holes are detonated at the same time, and then blast holes on two wings are successively detonated. The strip mine deep hole ditch digging detonation method has the advantages that detonation backlash is controlled within 7 m, the detonation quality is effectively improved, and the mining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a deep hole trenching blasting method. Background technique [0002] The history of deep hole blasting in open-pit mines is long, and there are many problems in trench digging blasting. The problem of large blasting after-blasting often occurs, which also causes great waste in terms of blasting efficiency and blasting cost. [0003] In order to solve the above technical problems, the existing blasting technology adopts the method of reducing hole network parameters, but this will reduce the blasting efficiency and increase the blasting cost; figure 1 , 6 rows, 8 holes in each row) calculation, according to the original parameters, the blasting area is 6 rows, 7 meters in each row, the row length is 6×7=42m, 8 holes in each row, 7 spacing, the length is 7×7=49m , the total area is (6×7)×(7×7)=2058m2, the blasting area is (6×6.5)×(7×6.5)=1774.5m2 according to the parameters of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04E21C47/00
CPCF42D1/00F42D3/04E21C47/00
Inventor 李兰彬张健鹏张子斌鹿文娇谷明
Owner BENGANG STEEL PLATES
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