Ilisu dam and hepp quarries of fill material investigations

This study consists the evaluation of rock quarries within the Ilısu Dam and HEPP Project which is the largest dam in the overall development plan of Tigris River. Quarry material investigations had commenced in 1976 and after that IlısuDam Construction Materials Report were written. The dam construction project had been started in 2007 as a foreign body type of credit, due to a change of dam body type, additional research were made in quarry area between the years 2009-2012.New material areas had been designated which were investigated again with drillings and tests. Meanwhile, core samples had been taken from drillings and tests have been performed on core and surface samples Behavior of material at site have beenevaluated closely by trial blasting fallowing these investigations. In addition, materials which are defined as suitable according to these investigations have been further tested in trial fills. Following the trial fill studies, gradation, settlement characteristics, deformation graphs and permeability values as well as density of the fill were defined via in situ tests.Keywords: Ilısu Dam, rock fill, drilling, trial embankment, investigation of construction material