Explosion energy distribution by side initiation and its effects on rock fragmentation

Leng Zhendong; Lu Wenbo; Fan Yong; Chen Ming; Yan Peng

doi:10.11883/1001-1455(2017)04-0661-09

Volume 37 Issue 4

May 2017

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Leng Zhendong, Lu Wenbo, Fan Yong, Chen Ming, Yan Peng. Explosion energy distribution by side initiation and its effects on rock fragmentation[J]. Explosion And Shock Waves, 2017, 37(4): 661-669. doi: 10.11883/1001-1455(2017)04-0661-09

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Leng Zhendong, Lu Wenbo, Fan Yong, Chen Ming, Yan Peng. Explosion energy distribution by side initiation and its effects on rock fragmentation[J]. Explosion And Shock Waves, 2017, 37(4): 661-669. doi: 10.11883/1001-1455(2017)04-0661-09

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Explosion energy distribution by side initiation and its effects on rock fragmentation

doi: 10.11883/1001-1455(2017)04-0661-09

Leng Zhendong^{1, 2},
Lu Wenbo^{1
,
,},
Fan Yong^{1, 3},
Chen Ming¹,
Yan Peng¹

1.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China
2.
China Gezhouba Group Explosive Co. Ltd, Chongqiing 401121, China
3.
College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002, Hubei, China

Received Date: 2015-09-28
Rev Recd Date: 2016-03-21
Publish Date: 2017-07-25

Abstract

Abstract

To improve the energy utilization and fragmentation effect in rock blasting, the explosion energy partitions of end initiation and continuous side initiation were analyzed. In addition, field blasting tests were conducted in Xiangshuigou Quarry, and the results show significant differences in the partition of shock and gas energy between the two initiation methods. The effective energy utilization of these two initiation methods in different rocks varies considerably. On this basis, a selection principle of initiation methods for rocks with different intensities was put forward. The continuous side initiation with a detonating cord is advantageous in soft and fissured rocks and contour blasting, while blasting for graded material in hard rock, the end initiation is recommended instead of the side initiation.
- rock blasting,
- fragmentation effect,
- initiation method,
- energy partition,
- shock energy,
- gas energy

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References(20)

References

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