Electronic Detonator System For Large Mines
Author: Partha Das Sharma (E.mail: sharmapd1@gmail.com)
Website: http://miningandblasting.wordpress.com/
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Electronic Delay Detonator System For Large Mines
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Precise, Programmable and Accurate Delay Timing Results In Techno-Economic
Benefits And Allows To Adopt “Signature-Hole Blast Analysis” Technique To
Mitigate Blast Induced Ground Vibration
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Partha Das Sharma (B.Tech-Hons. In Mining Engg.)
E.mail - sharmapd1@gmail.com,
Website: http://miningandblasting.wordpress.com/
1. Introduction - The mining and explosive industries rapidly embracing new technologies, in
order to improve overall performance, efficiency and cost-effectiveness in various types of
blasting and also to mitigate its adverse effects. Most recently, technology that is developed to
improve techno-economics and reduction of most of adverse effects in usage of explosive and
blasting is “Precise and Accurate Delay Timing – Digital or Electronic Detonator” system.
Broadly speaking, accurate and flexible timing allows blasters to make small hole-to-hole and
row-to-row changes to account for drilling inaccuracies. Adjusting the blast design to actual
conditions can improve safety and fragmentation, which can cut costs by optimizing the loading
and hauling cycle, increasing crusher throughput, and reducing the amount of oversize handling
and secondary breaking. In addition, precise and variable delay timing manipulations have
enhanced high-wall stability and bench crest preservation, resulting in safer mines operations and
also for reduction of blast induced ground vibration. These improvements allow for more accurate
placement of boreholes for succeeding blasts. Thus, the precision in delay timing has advantages
such as: a) Better ground vibration control, b) Better fragmentation, c) Better control of rock
movement and muck profile, d) Enhancement in productivity by optimizing utilization of
explosive energy.
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