Akademik Veri Yönetim Sistemi
Jeoloji Muhendisligi Dergisi, cilt.43, sa.2, ss.155-186, 2019 (Scopus)
© 2019, TMMOB - Jeoloji Muhendisleri Odasi. All rights reserved.Base rock of the Burgaz dam in the eastern part of the city of İzmir consists of micaschists having different physical and mechanical properties due to weathering and fracturing. The first aim is to compute the amount of settlement and ultimate bearing capacity value of micaschist both in and beneath the cutoff zone by using the results of pressuremeter tests. In addition, data from in-situ and some laboratory tests, which were used in the establishment of the relations between elastic modulus of the micaschist rock mass (EM) and uniaxial compressive strength (σc), EM/Eintactratios and RQD values. Comparison of in-situ and estimated rock mass deformation moduli by considering the RQD values was also performed. Pressuremeter tests indicate that for a dam with 115 m height and a base width of 58 m, the settlement will vary between 2.13 and 2.26 mm. The second aim of this work is to measure compression and shear wave velocities in order to obtain both the ratio of dynamic elastic modulus to Poisson′s ratio (E/v)dynamic and to compare (E/v)dynamic to (E/v)static. Test results reveal a positive linear relation of (E/v)dynamic =(E/v)static0.968. The sonic wave velocity of the micaschist is highly related to the testing direction. This study not only discusses the relationships between Estatic and sonic wave velocity (Vp) and Edynamic, but also the anisotropy effect arisen due to the schistosity planes with different orientations.