A Blasting Test Method for Optimal Matching of Rock and Explosive

A technology of blasting test and rock, which is applied in the blasting test field of rock and explosive matching optimization, to achieve the best matching and optimization effect

Active Publication Date: 2017-01-18
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a blasting test method with optimal matching of rock and explosive, which overcomes the shortcoming of simply evaluating that the smaller the particle size is, the better it is for a long time, and adopts the test method of the present invention in combination with the matching analysis of explosive and rock table, which can realize the best matching optimization of different rocks and optional explosives in the mine

Method used

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  • A Blasting Test Method for Optimal Matching of Rock and Explosive
  • A Blasting Test Method for Optimal Matching of Rock and Explosive
  • A Blasting Test Method for Optimal Matching of Rock and Explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The shallow hole blasting funnel test is carried out in the rock or ore area to be tested, and the standard blasting funnel test is adopted.

[0032] The rock area to be tested is granite, with a compressive strength of 68.2MPa and a density of 2.66t / m 3 , the longitudinal wave velocity is 4100m / s; three kinds of mixed emulsion explosives are selected, and the explosives and related parameters are marked according to the test sequence. Explosive 1 has a density of 1.12g / m 3 , the detonation velocity is 5200m / s; the density of explosive 2 is 1.15g / m 3 , the detonation velocity is 5300m / s; the density of explosive 3 is 1.2g / m 3 , the detonation velocity is 5450m / s.

[0033]The optimal analysis steps for the matching of explosives and rocks are as follows:

[0034] 1) Conduct shallow hole blasting funnel test, choose a flat site, clean up to the bedrock surface, and the diameter of the test area is 5m. They are all vertical boreholes with a diameter of 40mm, a hole de...

Embodiment 2

[0049] The shallow hole blasting funnel test is carried out in the rock or ore area to be tested, and the standard blasting funnel test is adopted.

[0050] The rock area to be tested is magnetite, with a compressive strength of 109.67MPa and a density of 3.63t / m 3 , the longitudinal wave velocity is 5885m / s; three kinds of mixed emulsion explosives are selected, and the explosives and related parameters are marked according to the test sequence. Explosive 1 has a density of 1.12g / m 3 , the detonation velocity is 5200m / s; the density of explosive 2 is 1.15g / m 3 , the detonation velocity is 5300m / s; the density of explosive 3 is 1.2g / m 3 , the detonation velocity is 5450m / s.

[0051] The optimal analysis steps for the matching of explosives and rocks are as follows:

[0052] 1) Conduct shallow hole blasting funnel test, choose a flat site, clean up to the bedrock surface, and the diameter of the test area is 5m. They are all vertical boreholes with a diameter of 40mm, a ho...

Embodiment 3

[0067] The shallow hole blasting funnel test is carried out in the rock or ore area to be tested, and the standard blasting funnel test is adopted.

[0068] The rock area to be tested is magnetite, with a compressive strength of 109.67MPa and a density of 3.63t / m 3 , the longitudinal wave velocity is 5885m / s; three kinds of mixed emulsion explosives and two kinds of mixed ammonium oil explosives are selected, and the explosives and related parameters are marked according to the test sequence. Explosive 1 has a density of 1.12g / m 3 , the detonation velocity is 5200m / s; the density of explosive 2 is 1.15g / m 3 , the detonation velocity is 5300m / s; the density of explosive 3 is 1.2g / m 3 , the detonation velocity is 5450m / s; the density of explosive 4 is 1.0g / m 3 , the detonation velocity is 3200m / s; the density of explosive 5 is 0.9g / m 3 , the detonation velocity is 3100m / s.

[0069] The optimal analysis steps for the matching of explosives and rocks are as follows:

[0070]...

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Abstract

The invention relates to a rock and explosive matching optimized blasting test method. The method includes: step shallow hole blasting funnel test and explosive and rock matching optimum analysis. The shallow hole blasting funnel test is carried out in a to-be-tested rock or ore area and adopts standard blasting crater test. The explosive and rock matching optimum analysis method includes: calculating the blasting crater volume, rock block average broken granularity, crack box dimension, seismic wave total energy, explosion energy time density and explosion energy utilization, making an explosive and rock matching analysis table, conducting groups of experiments, sorting and scoring the explosive and rock matching analysis table, and then determining the combination with the highest weighting score as the optimal matching of rock and explosive. By adopting the test method provided by the invention, and combining the explosive and rock matching analysis table, optimum matching optimization of different rocks of a mine and optional explosives can be realized.

Description

technical field [0001] The invention belongs to the technical field of rock blasting, in particular to a blasting test method for optimal matching of rocks and explosives. Background technique [0002] The rational matching between explosives and blasting parameters and ore rock behavior has always been an important research topic in blasting engineering. It is the development strategy of engineering blasting in the new century to study the fine control technology in the energy conversion process of explosives, improve the energy utilization rate of explosives, and reduce the harmful effects of blasting. With the introduction of the fine blasting concept and the successful development and use of mining explosive charging vehicles, the technology for preparing explosives with different performances on the spot has become relatively mature for different rock types. Green Mine lays the groundwork. By analyzing the constitutive relationship of various media under the impact lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/22
Inventor 李传林郭连军王永增张大宁曹洋刘鑫王润孟磊磊
Owner ANSTEEL GRP MINING CO LTD
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