چکیده مقاله
Rock slope stability for tectonic blocks 1 and 2 of Choghart open pit mine under sceismic load was analyzed in 3 D using the finite difference technique 3DEC The seismic load was from the 2005 Bafgh Earthquake with 0 13g PGA and 57 sec duration The mine is divided into 4 blocks according to tectonic and rock mass properties Blocks 1 and 2 have a slope angle of 50 degrees and are expected to fail in wedge and planar failure types, respectively Rock joint propagation patterns in FD models were generated using statistical methods to try to represent their natural form According to the results fromstatic analysis, blocks 1and 2 are stable with safety factors of 1 6 and 1 5, respectively For dynamic analysis, 6 seconds of the earthquake wave with the highest accelerations were applied to the model at 0 005 sec time steps with 0 5% damping The results showed that block 1 is unstable with a safety factor of 0 8, whereas block 2 has a safety factor of 1 2 and is stable
کلیدواژهها
نویسندگان
Amin Azhari
MSc Graduate Student from Yazd University, Department of Mining
Alireza Yarahmadi Bafghi
Assistant Professor, Department of Mining, Yazd University
Lohrasb Faramarzi
Assistant Professor, Department of Mining, Isfahan University of Technology
شیوه ارجاع
Azhari, Amin and Yarahmadi Bafghi, Alireza and Faramarzi, Lohrasb,1391,Dynamic Analysis of Tectonic Blocks 1 and 2 of Choghart Open-Pit Mines under earthquake: A Case Study,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان