Magnitude of Vibration vis-a-vis Charge per Delay and Total Charge
IR@CIMFR: CSIR-Central Institute of Mining and Fuel Research, Dhanbad
View Archive Info| Field | Value | |
| Title |
Magnitude of Vibration vis-a-vis Charge per Delay and Total Charge
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| Creator |
Mandal, S.K
Singh, M.M. Bhagat, N.K. |
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| Subject |
Blasting
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| Description |
The socio-eco-environmental constraints and increase of dwellings in and around the mine workings have very recently made the blasting
activities to be of high risk in day-to-day excavation works. Vibration and noise having a geometric attenuation with respect to distance,
sometimes poses problem in estimating its magnitude from the predicted best-fit propagation equation derived from wide range of data. Again,
for same charge per delay, the attenuation characteristic varies with the change in total charge. This paper, explains that depending upon
distance of concern, the magnitude of vibration depends not only on charge per delay (CD) but also on total charge (TC) and ratio between
total charge and charge per delay (TCCD). Considering the widely accepted USBM square-root scaled distance predictor equation, the
authors wanted to emphasize that after understanding the attenuation characteristics of blast induced vibration magnitudes, the data should
be categorized into various suitable range of distances. Thereafter, predictor equations should be determined for each category of distance and
with each charge parameter, namely, CD, TC and TCCD. The equation having least standard error of estimation (SEE) should be
considered as the best-fit propagation equation for that range of distance. The best-fit propagation equation, thus derived, would enable the
practicing mining engineers to have an optimum maximum allowable charge parameter to be blasted in a round and have a cost-effective and
eco-friendly mining operation.
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| Publisher |
Institution of Engineers (India)
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| Date |
2006-02
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cimfr.csircentral.net/1475/1/fm6n522.pdf
Mandal, S.K and Singh, M.M. and Bhagat, N.K. (2006) Magnitude of Vibration vis-a-vis Charge per Delay and Total Charge. Journal of the Institution of Engineers (India), 86. pp. 32-38. ISSN 0257-442X |
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| Relation |
http://cimfr.csircentral.net/1475/
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