Peak particle velocity, peak vector sum, dynamic simulation, damping coefficient, blast induced vibration
IR@CIMFR: CSIR-Central Institute of Mining and Fuel Research, Dhanbad
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| Title |
Peak particle velocity, peak vector sum, dynamic simulation, damping coefficient, blast induced vibration
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| Creator |
Paswan, RK
Roy, MP Singh , PK |
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| Subject |
Blasting
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| Description |
Several techniques are in common use for extraction and excavation of ore deposits such as surface miners,
excavators, rock cutters, rock headers, and drilling and blasting. Among these, the latter remains the most
inexpensive method of rock fragmentation and ore extraction, and in which characteristics of rock, explosives and
blast design are considered as fundamental elements in this process. Although proper fragmentation remains the
key objective, potential damage to back-wall and pit-wall has been considered of lesser importance than the same
for residential structures. The main reason for this lies with the complex nature of the geological characteristics of
the rockmass in the immediate vicinity of the blasting operation.
The paper is based on the research work carried out at Rampura-Agucha Lead-Zinc mine, Rajasthan, India. The
ores and associated rocks are extracted by both open-pit (opencast) and underground mining methods. The open
pit mining is currently producing 5.95 MTPA of ore. The underground part has started recently with expected
production of 4.5 MTPA in the near future. The open-pit mining operation currently is at 366 m depth and is
designed to reach up to a depth of 421 m. Blasting is carried out on benches 10 m to 11.5 m high with berm length
of 5.3 to 6 m. Controlled blasting techniques are being used in the mine, to minimize overbreak and backbreak.
Along with pre-split blast designs, production blast designs and explosive initiation techniques such as decoupling,
decking, side-initiation, etc. are being employed to minimize and control overbreak
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| Publisher |
The Mining, Geological and Metallurgical institute of India
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| Date |
2018
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| Type |
Article
PeerReviewed |
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| Identifier |
Paswan, RK and Roy, MP and Singh , PK (2018) Peak particle velocity, peak vector sum, dynamic simulation, damping coefficient, blast induced vibration. MGMI Transactions, 114. pp. 24-39. ISSN 0371-9538
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| Relation |
http://cimfr.csircentral.net/2548/
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