Cause Analysis and Countermeasures of Emulsified Explosive Misfire in Vertical Shaft Frozen Zone Excavation Blasting

Hai Bo Wang; Yao Cai Zhao; Qi Zong

doi:10.4028/www.scientific.net/AMM.170-173.3046

Paper Titles

Experimental Research on Technology of Medium Deep Hole Blasting in Large Inclination Rock Diphead Roadway
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The Application of Workflow Technology in Equipment Supply Support
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Cause Analysis and Countermeasures of Emulsified Explosive Misfire in Vertical Shaft Frozen Zone Excavation Blasting
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The Trial Research of Soil-Water Characteristic Curves of Unsaturated Soil and its Engineering Application
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Application Study on Dynamic Compaction Technology in Mine Tailings Foundation Reinforcement
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Modal Analysis of the Main Frame of Horizontal Type High-Pressure Grouting Machine Based on ANSYS
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 170-173Cause Analysis and Countermeasures of Emulsified...

Cause Analysis and Countermeasures of Emulsified Explosive Misfire in Vertical Shaft Frozen Zone Excavation Blasting

Abstract:

Emulsion explosive have well frost resistance, it can be stably detonated at -300C. But there are many misfires occurred in blasting construction of shaft frozen zone. After analysis, the causes was water in the hole frozen and it’s volume increased, so explosive cartridge was pressed, it’s density enlarged, and misfire created when it’s density exceed critical density of stable detonation. Based on analysis, plastic tube casing charge adopted for construction, and prevent misfire effectively.

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Periodical:

Applied Mechanics and Materials (Volumes 170-173)

Pages:

3046-3049

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.170-173.3046

Citation:

Cite this paper

Online since:

May 2012

Authors:

Hai Bo Wang, Yao Cai Zhao, Qi Zong

Keywords:

Blasting, Casing Charge, Emulsion Explosive, Frozen Zone in Vertical Shaft, Misfire

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References

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