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Analysis of the Propagation Characteristics of Blast Vibrations in Pasir Coal Mine  

Choi, Byung-Hee (한국지질자원연구원)
Ryu, Dong-Woo (한국지질자원연구원)
SunWoo, Choon (한국지질자원연구원)
Publication Information
Explosives and Blasting / v.24, no.2, 2006 , pp. 51-63 More about this Journal
Abstract
The typical blasting method adopted in Pasir Coal Mine is a surface blasting technique with a single free face. It means that there is only one free face, which is usually the ground surface. This kind of blasting method is easy to use but inevitably causes enormous ground vibrations, which, in turn, can affect the stability of the slopes comprising the various boundaries of the open pit mine. In addition, the method also has the problem of lowering the overall blast efficiency compared to other methods such as bench blasting methods or ones with more than two free faces. In this respect, a project was launched to develop a new blasting method that is suitable for both controling the ground vibration and enhancing the blast efficiency. As a part of the project, we investigated the current blasting method of the mine, and have conducted field measurements of the ground vibrations from 12 biasts. This Paper presents the details of the typical blasting pattern and the Propagation characteristics of the ground vibration from the surface blasting in the mine. Especially, various predictive equations for peak Particle velocities that can be used to estimate the ground vibration level in the mine area were derived from the regression analyses using the measured ground vibration data.
Keywords
surface blasting; Pasir Coal Mine; ground vibration; Propagation characteristics; peak particle velocity; predictive equation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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