Determination of geotechnical parameters using refraction seismic method
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
کد مقاله : 1552-NIGS
نویسندگان
1زمین شناسی، دانشگاه پیام نور واحد پرند ، استان تهران، ایران
2موسسه زئوفیزیک دانشگاه تهران
3کارشناس شرکت زمین فیزیک پویا
4زمین فیزیک پویا کارشناس
چکیده
Recognition and investigation of the quality of soil by the seismic methods are among the most essential tasks before performing any building/construction purposes. In this research, the Dynamic Elastic parameters of soil in Sangar site, located in the southeast of Rasht in Iran were delineated using refraction seismic and geotechnical borehole information. Seven shallow seismic profiles for P and S wave have been acquired. After applying conventional pre-processing methods, travel time curves have been obtained and processed using generalized reciprocal method. Also, using of the velocities of P and S waves and geotechnical parameters from 7 boreholes, the Dynamic Elastic parameters of soil such as Vp/Vs ratio, poisons ratio and Shear stress have been computed. Soil quality information was interpreted using seismic velocity values and strength parameters. The investigation site was then divided into different parts based on the obtained results. The aim of the research was to integrate the geophysical studies with the dynamic parameters to help in site characterization for seismic hazard estimation.
کلیدواژه ها
Title
Determination of geotechnical parameters using refraction seismic method
Authors
asghar azadi, sadegh moghadam, mohammad jafari, abbass aliyannezhadi
Abstract
Recognition and investigation of the quality of soil by the seismic methods are among the most essential tasks before performing any building/construction purposes. In this research, the Dynamic Elastic parameters of soil in Sangar site, located in the southeast of Rasht in Iran were delineated using refraction seismic and geotechnical borehole information. Seven shallow seismic profiles for P and S wave have been acquired. After applying conventional pre-processing methods, travel time curves have been obtained and processed using generalized reciprocal method. Also, using of the velocities of P and S waves and geotechnical parameters from 7 boreholes, the Dynamic Elastic parameters of soil such as Vp/Vs ratio, poisons ratio and Shear stress have been computed. Soil quality information was interpreted using seismic velocity values and strength parameters. The investigation site was then divided into different parts based on the obtained results. The aim of the research was to integrate the geophysical studies with the dynamic parameters to help in site characterization for seismic hazard estimation.
Keywords
Seismic refraction, Geotechnics, Dynamic Elastic parameters, Sangar, Iran