Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading

Wen He, Zheng Qin, Cheng Wang, Kui Zhao*, Wen Fang Shi, Jian Guo Ning

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

To study the effect of the explosion caused vibration on the roof of the pasted backfill, which use a new cementitious material agent as the backfilled agent in substitution of cement in the downward slicing drift mining, we first conducted blasting test, theoretical analysis and test data regression analysis, and then simulated the dynamic response of the new pasted backfill under explosion loading using the FLAC3D software. The simulation results show that, under the same explosion loading, the peak particle velocities in x, y, z directions of the new pasted backfill with cement-sand ratio 1: 6 and 1: 12 is slightly larger than those of the cemented pasted backfill and their difference is within 6.8%; while the peak particle velocities of the new pasted backfill with cement-sand ratio 1: 8 is slightly lower than those of the cemented pasted backfill. It can thus be concluded that the new cementitious material agent can be used for backfill mining with the requirements equally well satisfied of the original engineering blasting design.

源语言英语
页(从-至)803-812
页数10
期刊Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics
31
6
DOI
出版状态已出版 - 25 12月 2017

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