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Deep hole dust suppression blasting method in strip mine

An open-pit mine and deep hole technology, applied in blasting and other directions, can solve the problems of reducing dust concentration, increasing costs, and insignificant effect, and achieving the effects of reducing blasting cost, improving safety, and reducing bulk rate.

Active Publication Date: 2020-01-03
冀东海天水泥闻喜有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing blasting dust suppression technology only sprays water on the blasting area before and after the blasting, which has little effect, not only does not have a good effect on reducing the dust concentration, but also increases a lot of costs

Method used

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Embodiment Construction

[0016] The following examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way.

[0017] A method for suppressing dust in deep holes in an open-pit mine, comprising the following steps:

[0018] (1) Hole network design and hole layout: determine the spacing and row spacing of the blasting blast holes, and the hole layout method adopts the plum-shaped hole layout;

[0019] (2) Perforation: use Antras ROC L6 full-hydraulic down-the-hole drilling rig to drill blastholes at an angle of 75 degrees to the air surface, set the diameter of blasting blastholes to d=115mm, and the depth of the first row of blastholes to h1=14m. The depth of the other rows of blastholes h2 = 13.5m;

[0020] (3) Blast hole inspection and measurement before charging: detect the distance between the blast holes in the blasting area, whether the diameter, depth and inclination of the blast holes meet the design requirements...

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PUM

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Abstract

The invention discloses a deep hole dust suppression blasting method in a strip mine. The method includes the following steps of firstly, designing a hole pattern and arranging holes; secondly, punching holes; thirdly, detecting and measuring blast holes before explosives are loaded; fourthly, filling the explosives; fifthly, placing water bags; and sixthly, connecting a network and initiating theblasting. By means of the deep hole dust suppression blasting method in the strip mine, the dust concentration is reduced after blasting, and the environmental protection is facilitated; safety is improved, and the blasting vibration and flying rock are obviously reduced; zero bottom rock is produced, the top bulk rate is reduced, and the cost for secondary disposing bottom rock and top bulk is saved; and the consumption of the explosives is reduced, and the blasting cost is reduced.

Description

technical field [0001] The invention relates to the technical field of blasting engineering, in particular to a method for suppressing dust in deep holes in open-pit mines. Background technique [0002] In order to integrate into the construction of national green mines as soon as possible and face the increasingly severe environmental protection situation, although the shoveling, transportation, and crushing of mines have been suppressed, the environmental pressure brought by the concentration of blasting dust has become a bottleneck for the survival and development of mines. Moreover, the National Environmental Protection Supervision clearly requires that dust suppression measures must be taken in open-pit blasting construction operations. The existing blasting dust suppression technology only sprays water on the blasting area before and after the blasting, which has little effect, not only does not have a good effect on reducing the dust concentration, but also increases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D1/08F42D3/04
CPCF42D1/00F42D1/08F42D3/04
Inventor 张士东
Owner 冀东海天水泥闻喜有限责任公司
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