Investigations on the attenuation characteristics of blast-induced ground vibrations for developing controlled blast design

DOI

10.2991/rare-16.2016.61How to use a DOI?

Keywords

attenuation; PPV (peak particle velocity); frequency; scaled distance

Abstract

Drilling and blasting is still the most prolific way to extract minerals and associated waste from the earth, more so in case of hard rocks with uniaxial compressive strength greater than 50 MPa. Considering the growing demand for these minerals reducing ground vibrations, air vibrations, fly rocks, dust and back break has become mandatory for successful operation of these quarries and mines. A study has been carried out in one of the quartzite quarries which is surrounded by a village within a distance of about 100m-300m from quarry line. The study was carried out to understand the nature and directional variation of propagation of blast-induced ground vibration with an aim to control the same by keeping it within the permissible limits of ground vibration as suggested by Directorate General of Mines Safety (DGMS) for various types of human dwellings. The behavior of blast-induced ground vibrations and its frequency response were observed based on different variables (viz. scaled distance, direction of propagation of seismic waves, and degree of development of benches). A model consisting of two components (viz. mid-field and far-field) and its superiority and applicability over a combined equation of PPV is also discussed. Further, the directional effect of blast vibrations and the influence of degree of development of benches on the ground vibration is also outlined. This paper synthesizes the results of the above-mentioned investigations and reports the development of a ground vibration prediction approach for safe and productive rock excavations in quarries and mines

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - V.M.S.R. Murthy
AU  - Bhagade Nachiket V
AU  - R.K. Das
PY  - 2016/11
DA  - 2016/11
TI  - Investigations on the attenuation characteristics of blast-induced ground vibrations for developing controlled blast design
BT  - Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SP  - 391
EP  - 398
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.61
DO  - 10.2991/rare-16.2016.61
ID  - Murthy2016/11
ER  -