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

محورهای موضوعی : Engineering geology

Javad Salamati ¹ , Maryam Haghbeen ² , Seyed Mohammadali Sadreddini ³

1 - Department of Civil Engineering, Islamic Azad University Islamshahr Branch, Islamshahr, Iran
2 - Department of Civil Engineering, Islamic Azad University Islamshahr Branch, Islamshahr, Iran
3 - Department of Civil Engineering, Islamic Azad University Islamshahr Branch, Islamshahr, Iran

تاریخ دریافت : 1401/05/31 تاریخ پذیرش : 1401/05/31 تاریخ انتشار : 1401/03/11

کلید واژه: seismicity, Seismic hazard analysis, Geo-dynamic, Water transfer tunnel, Gulab 2,

چکیده مقاله :

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.