Prediction of Ground Vibration Level Induced by Blasting at Different Rock Units
سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,032
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شناسه ملی سند علمی:
NCHP03_167
تاریخ نمایه سازی: 3 فروردین 1391
چکیده مقاله:
Blasting is generally inevitable for hard rock excavation. Vibrations, induced from blasting affect adjacent and remote structures, as well people in the neighborhood. This paper describes ground motions induced by blasting near underground and surface concrete structures during the construction of upper Gotvand dam. Effects of different rock formations, different detonators and explosives are analyzed. During underground and surface excavation, 498 ground motions, produces by 216 shots were measured with Vibraloc vibration monitors. Scaled distance and peak particlevelocity data pairs were carefully recorded and analyzed statistically. This analysis allowed the document of empirical relationships between scale distance and peak particle velocity in different surface and underground regions. Finally, the particle and frequency values of further blast events were evaluated according to the USBM (RI 8507) to validate the relation and predict the influence level to the neighboring concrete structures
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نویسندگان
Reza Nateghi
Rock mechanic engineer/Technical Department /Sepasad Engineering Co