Research and application on efficient rock blasting based on circular free surface

HONG yong; MA Honghao; SHEN Zhaowu; REN Lijie; CUI Yu; ZHAO Kai

doi:10.11883/bzycj-2016-0176

Volume 38 Issue 1

Nov. 2017

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HONG yong, MA Honghao, SHEN Zhaowu, REN Lijie, CUI Yu, ZHAO Kai. Research and application on efficient rock blasting based on circular free surface[J]. Explosion And Shock Waves, 2018, 38(1): 98-105. doi: 10.11883/bzycj-2016-0176

Citation:

HONG yong, MA Honghao, SHEN Zhaowu, REN Lijie, CUI Yu, ZHAO Kai. Research and application on efficient rock blasting based on circular free surface[J]. Explosion And Shock Waves, 2018, 38(1): 98-105. doi: 10.11883/bzycj-2016-0176

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Research and application on efficient rock blasting based on circular free surface

doi: 10.11883/bzycj-2016-0176

HONG yong¹,
MA Honghao^{1, 2
,
,},
SHEN Zhaowu¹,
REN Lijie¹,
CUI Yu¹,
ZHAO Kai¹

1.
CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, Anhui, China
2.
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui, China

Received Date: 2016-06-20
Rev Recd Date: 2016-10-19
Publish Date: 2018-01-25

Abstract

Abstract

The present work aims to improve the speed and efficiency of rock excavation by forming a circular excavating surface with the coring technique so that the smallest possible charge of explosives would be needed. At first a numerical simulation was conducted to figure out the explosive parameters, then an experiment was carried out to verify the simulation. Two concrete models were fabricated to respectively model the coring blasting and the traditional blasting, with a vibration meter installed to measure the vibration. Comparison of the vibration data and the blasting effects between the two models show that the effect and the blasting vibration of the coring blasting are significantly superior to those of the traditional blasting. And the coring technique was successfully applied to an actual excavation project. The results show that the coring technique can be applied to blasting in circular excavating surface, thus reducing the number of shot holes, controlling the blasting vibration and improving blasting efficiency. This technique can be applied in urban engineering projects.
- rock drift excavation,
- rock blasting,
- coring,
- circular surface

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References(17)

References

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