The Latest Generation of the Electronic System Enhanced Safety and Productivity

Kara, Sami; Adamson, W.R.; Reisz, William J.; Trousselle, Raphael

doi:10.1016/j.proeng.2014.09.052

Cited by 4 publications

(1 citation statement)

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“…The civil explosive industry widely promotes digital electronic detonators for their advantages, such as accurate delay timing and enhanced safety. Integrated circuit chips allow for the arbitrary selection of delay time within 1-16 s, achieving exceptionally high accuracy with a delay error of only about 0.1 ms [ 5 , 6 ]. According to multiple on-site surveys, most of the Xinjiang mines are transitioning from using the nonel detonator to a digital electronic detonator.…”

Section: Introductionmentioning

confidence: 99%

Time–Frequency–Energy Characteristics Analysis of Vibration Signals in Digital Electronic Detonators and Nonel Detonators Exploders Based on the HHT Method

Yin

Chen

Yin

et al. 2023

Sensors

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The China Society of Explosives and Blasting required a larger than 20% annual increase in the national use of digital electronic detonators since 2018. So, this article conducted a large number of on-site tests and then used the Hilbert–Huang Transform method to analyze and compare the vibration signals of digital electronic and nonel detonators during the excavation process of minor cross-sectional rock roadways from the perspective of time, frequency, and energy. Then, through vibration energy analysis, identification of actual delay time, and formula derivation, it was proved that the delay time error of the detonator can control vibration wave random interference and reduce vibration. The analysis results showed that when using a segmented simultaneous blasting network for excavation in small-sectioned rock tunnels, nonel detonators may provide more excellent protection to structures than digital electronic detonators. In the same segment, the timing error of nonel detonators produces a vibration wave with a random superposition damping effect, resulting in an average vibration reduction of 19.4% per segment compared to digital electronic detonators. However, digital electronic detonators are superior to nonel detonators for the fragmentation effect on rock. The research conducted in this paper has the potential to facilitate a more rational and comprehensive promotion of digital electronic detonators in China.

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Section: Introductionmentioning

confidence: 99%

Time–Frequency–Energy Characteristics Analysis of Vibration Signals in Digital Electronic Detonators and Nonel Detonators Exploders Based on the HHT Method

Yin

Chen

Yin

et al. 2023

Sensors

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Controlled Blasting in a Limestone Mine using Electronic Detonators: A Case Study

Mishra

Nigam²,

Singh

2017

Journal of the Geological Society of India

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Except for very deep-seated deposits, open cast mining method has been recognized as the safest and most productive mode for mining minerals. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects. Explosives and blasting techniques play a significant role in efficient opencast mining operations. There have been constant technological developments towards safer, faster, economical and more efficient blasting systems. Further, globally increased competitiveness has necessitated to carryout blasts in such a way that the desired degree of fragmentation is achieved in the primary blast, with minimum undesired side effects such as ground vibration, air blast/noise, flyrock, generation of oversize boulders, formation of toe, and over break or back break. Hence, the ultimate objective of the blasting engineer is to ensure that the blasts are carried out in an eco-friendly manner. This paper presents a case study of limestone mine where a controlled blasting was conducted near a green structure of wagon tippler (at 2 m) being constructed for foundation work of belt conveyor as the mine management wants to double the existing production. This paper deals with controlled blast design and its implementation using electronic detonators with signature hole technique.

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