Vibration Assessing Model: Comparison Between Methods
Author(s)
G. Alfaro Degan, D. Lippiello, S. Lorenzetti & M. Pinzari
Abstract
The aim of blasting operations is rock fragmentation. It provides an appropriate
rock material granulation or size that is suitable for loading and transportation.
However, the blasting process and usage of explosives remain a potential source
of numerous human and environmental hazards. The aim of this paper is, first of
all, to provide models (and models comparison) concerning one of the major
environmental issues related to blasting operations in mining and civil
engineering projects: ground vibration propagation. The study displays an
assessment of ground vibrations caused by blasting experiments at a whinstone
quarry. The vibration source is the blasting of a fixed quantity of explosive
burden (200 Kg of an Ammonium Nitrate Slurry Watergel – Tutagex 110,
fragmented in 8 different parallel blast holes with a fixed 2 meter spacing). The
primary goal of this study was to estimate the peak particle velocity (PPV) of the
vibration, in order to protect the dwelling area adjacent to the quarry. Based on
the data obtained from field measurements, a new equation was proposed: to
achieve this objective we use geostatistical modelling, the branch of statistics
that studies the phenomena that are developed on space-based, starting from the
information derived from the sampling. The decision to describe the
phenomenon with geostatistical modelling stems from having a limited number
of samples and a vibration source difficult to repeat, which makes the
geostatistics suitable for this purpose. In fact, it is often used to study phenomena
characterized by a limited availability of samples. The final goal is the
comparative analysis between the results obtained by the geostatistical equation
and common empirical predictors currently used in blasting practice. The
analysis of the comparison between these two approaches shows that the
geostatistical tool seems to be suitable to the purposed scope.
Keywords: geostatistics, vibrations, quarries, blast.
Keywords
Keywords: geostatistics, vibrations, quarries, blast.
Related Book
Other papers in this volume
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