Akademik Veri Yönetim Sistemi
Madencilik, cilt.50, sa.4, ss.3-19, 2011 (Scopus)
Blasting in coal or cover excavation material in open pit mines is indispensible because of its economic gains. Nevertheless, blast-induced vibrations constitute significant problems for surrounding settlements. The effects of blast-induced vibrations at the surrounding settlements are more than usual if coal seam continues through under the settlement. The reason for this case is formation of channel waves that occur in coal seam which has low density and low seismic velocity according to neighboring rocks. Channel waves, capable of traveling long distance depending on the seam thickness and their vibration effects, are several times higher than the usual waves. Mining and geophysical engineers use channel waves a variety of ways in their production and research activities. In this study, unlike previous studies, channel waves induced vibration effects in settlements are investigated with model studies and field experiments including 2 group blasts at an open pit mine. The general expectation in minimizing blast-induced ground vibration works is that decreasing vibration with increasing distance. This study points out that, contrary to the general expectation, channel waves move the vibration with longer distances without decreasing their amplitudes.