Rock Failure Mechanism of Air-Decked Smooth Blasting under Soft Interlayer

Liang Wu; Dong Xiao Yu; Wei Dong Duan; Dong Wang Zhong

doi:10.4028/www.scientific.net/AMR.402.617

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 402Rock Failure Mechanism of Air-Decked Smooth...

Rock Failure Mechanism of Air-Decked Smooth Blasting under Soft Interlayer

Abstract:

In order to enhance smooth blasting adaptability and its effect in mining for rock mass complex characteristics, and based on the dynamic finite element analysis software with the material model of Mat-Plastic-Kinemetic, the dynamic stress characteristics and failure mechanism of blast-hole near-field with level soft interlayer are researched on different air-decked charge structures. The main effect of soft interlayer on top-air-decked charge structure is the tensile strength and range at the top of blasting hole, but the main effect of soft interlayer on middle-air-decked charge structure is the tensile strength and range at the middle of blasting hole, and some effect of soft interlayer on bottom-air-decked charge structure is the extension of rock crack at the bottom of blast- hole.

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Periodical:

Advanced Materials Research (Volume 402)

Pages:

617-621

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.402.617

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Online since:

November 2011

Authors:

Liang Wu, Dong Xiao Yu, Wei Dong Duan, Dong Wang Zhong

Keywords:

Air-Decked, Numerical Simulation, Smooth Blasting, Soft Interlayer

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