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The Effects Of Rock Mass Properties On Blast-Induced Vibrations And Geophysical Properties
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 9th Congress of the Balkan Geophysical Society, Nov 2017, Volume 2017, p.1 - 5
Abstract
Intensity of blast-induced vibrations is affected by parameters such as the physical and mechanical properties of rock mass, explosive characteristics and blasting design. This study measured blasting-induced vibrations in the Kangal Open-Pit Coal Mine, the Tülü Open-Pit Boron Mine, the Kırka Open-Pit Boron Mine, and the TKI Çan Coal Mine fields. The results showed highly variable field constants (K=211.25–5955.74 and □=0.82–2.32) and damping behaviors according to direction. Rock mass properties and possible directional variation were investigated by using different geophysical methods (electric resistivity, seismic refraction and multi-channel analysis of surface wave) and current sounding information. Then, rock mass rating (RMR), P- and S-wave velocities of the surrounding rocks have been constructed to estimate the peak particle velocities of related blast-induced vibrations. The proposed PPV model has a good correlation coefficient and hence it can be directly used in prediction of blast-induced vibrations in rocks. Standard errors and coefficient of correlations of the predicted blast-induced vibration parameters are obtained with respect to the observed field data.