In presplit blasting operations airborne energy called air blast overpressure or
impulsive sound is produced. The air blast induced by blasting may vary
significantly at or around an open pit mine depending on several parameters such as
the amount of charge detonated, the physical distance between the blast and the
monitoring locations and the weather conditions. Therefore evaluation and
assessment of noise condition at or around an open pit mine is necessary.
The objective of this research study is to monitor and record the noise and to
investigate and assess the noise conditions that will be induced from presplit
blasting operations at Kisladag Gold Mine. In this research study, several
parameters such as the amount of charge, the physical distance to the location of
monitoring device or residential structures and the weather condition parameters
such as wind direction, wind speed were recorded, analyzed and evaluated.
It is observed that with increasing charge per delay air overpressure increases,
whereas with increasing scaled distances it decreases. It is also understood that
wind speed and the direction are effective in air overpressure propagation also, but
this subject needs further investigation. It is concluded that according to the U.S.
regulations there is no damage risk to the structures and no disturbance to the
inhabitants at present. Due to the uncertainties in weather conditions, in order not to
take any risks, the charge amount per delay should be kept at 35 kg or less for
presplit blasting at the mine.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/3/12608741/index.pdf |
| Date | 01 May 2007 |
| Creators | Bigikocin, Onur |
| Contributors | Bilgin, Hasan Aydin |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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