Characteristics and mechanisms of strain waves generated in rock by cylindrical explosive charges
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- 作者：Ke-wei Liu 刘科伟 ; Xiao-han Li 李萧翰 ; Xi-bing Li 李夕兵…
- 关键词：cylindrical explosive charge ; strain wave ; concentrated explosive charge ; elemental strain wave ; superposing principle ; velocity of detonation (V.O.D.) ; velocity of propagation (V.O.P.)
- 刊名：Journal of Central South University
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：23
- 期：11
- 页码：2951-2957
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Engineering, general; Metallic Materials;
- 出版者：Central South University
- ISSN：2227-5223
- 卷排序：23
文摘
A superposing principle, by suitably adding the strain waves from a number of concentrated explosive charges to approximate the waves generated by a cylindrical charge based on the strain wave of a point or small spherical explosive charge generated in rock, is used to further study the triggering time of strain gauges installed in radial direction at same distances but different positions surrounding a cylindrical explosive charge in rock. The duration of the first compression phase and peak value of strain wave, and furthermore, their differences are analyzed and some explanations are given. Besides that, the gauge orientation in which the maximum peak value occurs is also discussed. At last, the effect of velocity of detonation (V.O.D.) of a cylindrical explosive charge on the strain waves generated in the surrounding rock is taken as key research and the pattern of peak amplitude of a strain wave varies with the V.O.D. is likely to have been found.