PGA Estimation for Gulab 2 Water Transfer Tunnel using Probabilistic Seismic Hazard Analysis Method (PSHA)

Geotechnical Geology

دوره 18، شماره 1، شهریور 2022، صفحه 687-695   

نوع مقاله: Original Research

شناسه دیجیتال (DOI): 10.30495/geotech.2022.693980

نویسندگان

Javad Salamati؛ Maryam Haghbeen^* ؛ Seyed Mohammadali Sadreddini

Department of Civil Engineering, Islamic Azad University Islamshahr Branch, Islamshahr, Iran

چکیده

The Gulab 2 water transmission tunnel in order to supply water to Isfahan city in the length of 17 km from the end of the Gulab tunnel has been done. This tunnel is located in Sanandaj - Sirjan zone and lithostratigraphic the oldest formations of the tunnel site are Paleozoic metamorphic rocks. Based on geological studies, Gulab 2 tunnel in Khamiran shale formation under the alluvial plain has been drilled which mainly is directed in NW-SE. As seismotectonic, the tunnel is located in the northwest of the Zagros zone and witnesses various earthquake events with various magnitudes. Based on seismic calculations, to determine the seismic parameters by probabilistic methods, the tunnel site classification is average risk rating and Gulab 2 tunnel is level 1-important class.

کلیدواژه‌ها

Seismicity؛ Geo-dynamic؛ Water transfer tunnel؛ Seismic hazard analysis؛ Gulab 2