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Numerical Simulation Analysis of the Mechanism of Smooth Blasting

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 32 Issue 2 Page 309-313
published_at 1982
KJ00000156420.pdf
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Title
スムーズブラスティングの機構に関する数値シミュレーション
Numerical Simulation Analysis of the Mechanism of Smooth Blasting
Creators Nakagawa Koji
Creators Sakamoto Takeshi
Source Identifiers
Smooth blasting techniques are used to minimize overbreak (or fracturing of rock) beyond the designed boundary of main excavation areas. In recent years the approaches have become more sophisticated, but they remain essentially trial-and-error proposition as far as practical field application is concerned. One of the reasons of this proposition may be the lack of knowledge about the smooth blasting mechanism. In order to make clear the mechanism of smooth rock wall formation in blasting, the authors studied experimentally the blasting crack development in cement mortar specimen. In this study the time lag dependence of the detonations in two adjacent blast holes on crack formation between holes. In the numerical simulation analysis, dynamic finite element method was employed.
Subjects
土木工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1982
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部