Blast wave characteristics and its influence with distance of measurement
IR@CIMFR: CSIR-Central Institute of Mining and Fuel Research, Dhanbad
View Archive Info| Field | Value | |
| Title |
Blast wave characteristics and its influence with distance of measurement
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| Creator |
Mandal, S.K
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| Subject |
Blasting
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| Description |
Extraction of locked-up coal pillars by opencast method and the presence of dwellings in proximity to excavation area lead to specialised drilling and blasting plan for safety of structures and humans. Introduction of improper bench layout, mismatched drilling equipment and blast geometry
enhances discomfort for local inhabitants. Blast-induced vibration magnitude also shows poor attenuation rate to cause unwanted impact on structures. Reviewing into the nature of wave signature and characteristics of attenuation
for different depth of blast holes and type of explosive, the paper puts forward a theoretical analysis to substantiate the anomaly in vibration monitored at
different heights of structure for both opencast and underground blasting operation. In opencast operation, for close distance measurement, reduction in vibration magnitude was observed with an increase in height of measurement.
Similarly, when the radial distance between structure and blasting source was more than vertical cover for underground blasting, amplification in vibration magnitude was observed with an increase in height of measurement. Lastly, the paper communicates that vibration should be measured on structures
and characteristics of vibration along with different forms of energy transmitted to structure should be evaluated to limit vibration magnitude for safety of structures.
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| Publisher |
academic, scientific and professional journals
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| Date |
2010-03
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cimfr.csircentral.net/1476/1/IJMME_2(1)_Paper_03.pdf
Mandal, S.K (2010) Blast wave characteristics and its influence with distance of measurement. International Journal of Mining and Mineral Engineering, 2 (1). pp. 30-43. ISSN 1754-890X |
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| Relation |
http://cimfr.csircentral.net/1476/
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