A method for measuring and setting out the boundary line of explosive pile shoveling

A technology for measuring stakeout and exploding piles, applied in the directions of measuring instruments, measuring devices, surveying and mapping, and navigation, etc., can solve the problems of less research on shovel loading rock boundary stakeout, loss dilution, lack of technical basis for stakeout methods, etc. The effect of mining loss dilution rate, improving production capacity, and improving perforation efficiency

Active Publication Date: 2019-05-10
CHINA GOLD INNER MONGOLIA MINING
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Problems solved by technology

In each of the above situations, it is necessary to stake out the shoveling boundary line on the site blast pile, and the stake out method lacks strict technical basis, and the stake out result may cause a large loss and dilution, but there is no way to investigate. As a design principle, there are few studies on the setting out of the shovel-loaded ore-rock boundary when mixed explosions occur

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  • A method for measuring and setting out the boundary line of explosive pile shoveling
  • A method for measuring and setting out the boundary line of explosive pile shoveling

Examples

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Effect test

Embodiment 1

[0022] The method for measuring and setting out the boundary line of explosive pile shoveling includes the following steps:

[0023] (1) Measure the occurrence of solid ore and rock in the blasting block with obvious color difference, measure the ore and rock dispersion of the blasting pile virtual body, find the blasting distribution law, and calculate the average blasting loose coefficient and coefficient dispersion error, pay attention to distinguish a free surface , two free surfaces and the same number of rows of blasting holes should be statistically calculated separately, and the number of measurements in each case should be more than 13 blasting piles:

[0024] Loose coefficient k= V 虚 / V 实 = imaginary volume of blast pile / real volume of block before blasting;

[0025] (2) Measure the shovel slope angle of the electric shovel and excavator, calculate the shovel slope angle of the explosive pile section below the section height of 2 meters and the shovel slope angle o...

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Abstract

The invention discloses a muckpile and scooping boundary measurement setting-out method; the method comprises: planning according to certain rules in accordance with the parameters, such as muckpile bulk coefficient, muckpile shape, scooping slope angle, and orebody occurrence state, measuring muckpile shape when rock-ore boundary is less than 10 m away from pre-blasting slope crest, and calculating a setting-out position by using the method of approach; when the rock-ore boundary is greater than 10 m away from the pre-blasting slope crest, calculating the setting-out position directly, wherein extrapolation distance is a distance from a boundary point to a part 2 m off the last row of hole lines, multiplied by bulk coefficient of this position. The problem of how to perform precise separate scooping and setting-out in rock-ore mixed blasting is well solved, mining loss is reduced, and dilution rate is reduced effectively; in addition, perforating efficiency of a related section is improved, perforating, blasting and scooping cycle time of the related section is shortened, and the productivity of an operation line is improved.

Description

technical field [0001] The invention relates to the technical field of open-pit mining, in particular to a method for measuring and setting out boundaries of blast pile shoveling. Background technique [0002] In the process of open-pit mining, separate blasting and separate mining should be carried out according to the boundary of the ore body. However, in the actual construction process, due to the ore body and its changes, mixed explosions inevitably occur. What often happens is that the mixed blasting stack is close to the thickness of the removal. , generally do not pack. There are generally two cases when mining personnel do piercing and blasting and shoveling design: one is that when low-grade ore and surrounding rock are mixed and blasted, the design is carried out according to the principle of loss and dilution; Dilute the ore near the boundary to a certain grade value. In each of the above situations, it is necessary to stake out the boundary line of shoveling on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 余建国王晓东范国敏
Owner CHINA GOLD INNER MONGOLIA MINING
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