Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading

HE Wen; QIN Zheng; WANG Cheng; ZHAO Kui; SHI Wen-Fang; NING Jian-Guo

doi:10.11858/gywlxb.2017.06.016

Volume 31 Issue 6

Nov 2017

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Chinese Journal of High Pressure Physics > 2017 > 31(6): 803-812.

HE Wen, QIN Zheng, WANG Cheng, ZHAO Kui, SHI Wen-Fang, NING Jian-Guo. Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 803-812. doi: 10.11858/gywlxb.2017.06.016

Citation:

HE Wen, QIN Zheng, WANG Cheng, ZHAO Kui, SHI Wen-Fang, NING Jian-Guo. Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 803-812. doi: 10.11858/gywlxb.2017.06.016

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Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading

doi: 10.11858/gywlxb.2017.06.016

1.
School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
2.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received Date: 11 Jan 2017
Rev Recd Date: 17 Mar 2017

Abstract

Abstract

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 FLAC^3D 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.
- explosion loading,
- pasted backfill,
- FLAC^3D simulation,
- roof stability

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References(18)

References

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Dynamic Response of New Cementitious Material Pasted Backfill under Explosion Loading

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