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Ground and Air Vibrations Caused by Surface Blasting. Volume IV a New Analytical Predictor of Ground Vibration Induced by Blasting.

Authors
Ghosh-A; Daemen-JJK
Source
NTIS: PB/84-191964 :315 pages
Link
NIOSHTIC No.
10003877
Abstract
A new analytical formula for predicting ground vibrations induced by blasting is proposed. One factor accounts for geometrical spreading and one factor corresponds to inelastic attenuation. The geometrical spreading function is based on likely source geometries idealized as either square root, cube root, or site specific scaling and on the propagation characteristics of predominant wave types. The inelastic attenuation is approximated by an exponential function. The empirical constants in these functions are backcalculated from field measurements. Regression analyses were performed on 23 sets of measured data to determine the validity and effectiveness of the proposed method. In many cases, the proposed method gives better correlation than the conventional method. In most of the remaining cases, there was no difference between the two methods. The statistical analyses do not show much difference between square root, cube root, or site specific scalings.
Publication Date
19830101
Document Type
CP; Final Contract Report;
Fiscal Year
1983
NTIS Accession No.
PB84-191964
NTIS Price
A15
Identifying No.
OFR 105(4)-84
NIOSH Division
WO;
Source Name
NTIS: PB/84-191964
State
AZ;
Performing Organization
Univ. of Arizona
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