liquefaction potential hazard in ghazan chay dam soil layers with using standard penetration test results

One of the important problems in earthquake geotechnical engineering is liquefaction phenomenon that happens in loose saturated granular soils. this phenomenon can cause great damages to underground structures and buildings and lifelines. liquefaction resistance of soils can be evaluated by experimental and field tests. in this research, results of liquefaction potential evaluation based on standard penetration test (spt) were proposed. case study area is ghazan chay dam at southeast of khoy city at west azerbaijan province in iran. in this study 18 boreholes was collected. with considering type of soils and ground-water table level liquefaction potential evaluated. then, liquefaction potential index (lpi) assessed. obtained results showed that almost more of 50% alluvium sediments deposits is included sand and silty sand. also, liquefaction potential hazard with considering ground water table level is high.