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Explosion reshaping treatment method for primary slow sideslope

A technology of shaping treatment and slope, applied in blasting, excavation, construction, etc., can solve problems such as loss of universality, and achieve the effect of improving reasonable distribution, simple construction and reducing foundation.

Inactive Publication Date: 2008-11-26
WUHAN BLASTING ENG
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  • Abstract
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  • Claims
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Problems solved by technology

This method of calculating and distributing the charge is not related to the aperture, especially for the determination of the initial explosion and expansion charge, there is a kind of artificial random behavior, or must rely on experience and experiments to apply correctly, so that the determination of the initial explosion and expansion charge and the follow-up The increasing method of detonation and expansion will lose its universality

Method used

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  • Explosion reshaping treatment method for primary slow sideslope
  • Explosion reshaping treatment method for primary slow sideslope
  • Explosion reshaping treatment method for primary slow sideslope

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Embodiment Construction

[0017] A blasting and plastic treatment method for an original gentle slope of soft rock, the specific steps of which are as follows:

[0018] 1. Determine the location of the production platform according to the layout requirements of the steps, measure the series of actual slope profiles of the original gentle slope section to be processed, and determine the chassis resistance line values ​​at different positions.

[0019] 2. According to the slope profile, after designing the hole position, the hole diameter is determined to be 180mm, the hole depth is 13m, the inclination angle of the blasthole is 75°, the charge of the blasthole is 400kg, and the volume of the explosive expansion pot required is 0.5m 3 . In this embodiment, a 150mm drill bit is used to drill a hole with a diameter of 180mm.

[0020] 3. Explosion pot blasting for the first time

[0021] According to the charge amount 2πr in the blasting of the initial expansion pot 3 ρ 0 ≤Q≤4.2πr 3 ρ 0 , where: ρ 0 ...

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Abstract

A method for reforming gently inclined slope by explosion includes confirming production platform position and under frame resistance linear value of different position; designing hole position, hole depth, explosive charge amount of different blast hole; carrying out 3 - 6 times of explosions for expanding explosive column with initial explosive loading amount of 2pir3 Po not greater than Q not greater than 4.2pir3 Po and follow - up amount of increase progressively as 1.5 2pir3 Po not greater than deltaQ not greater than 2.5pir3 Po then filling explosive in columns and backfilling blast holes as well as connecting them for explosion.

Description

1. Technical field [0001] The invention belongs to the technical field of geotechnical engineering blasting, and in particular relates to a blasting shaping treatment method for forming original gentle slopes into normal production steps. 2. Background technology [0002] In order to form normal production steps in open-pit mines, the original gentle slope needs to be shaped. The general method is to use a drilling rig to drill inclined deep holes and charge blasting. Due to the gentle slope, the large resistance line of the chassis, and insufficient charge at the bottom of the blast hole, the blasting effect is poor, and there are many roots and large lumps after blasting. It takes multiple treatments to form a normal production step. Therefore, the technology of approximately equal explosive unit consumption in the blasting of each layered ore along the hole depth emerges as the times require, that is, the amount of ore and rock in each layer along the hole depth is large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D3/04E02D17/20
Inventor 马建军蔡路军段卫东熊祖钊李寿贵磨季云
Owner WUHAN BLASTING ENG
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