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Farkli Kaya Siniflari Icin Yapilan Sayisal Modelleme Calismalarinin Karsilastirilmasi-Ornek Uygulama Gunumuzde artan sehir nufusu, ulasimda toplu tasimayi mecbur kilmaktadir. Şehirlerdeki yapilasmanin bozuklugu ve yollarin yetersizligi karayolu ulasimina gore;  cevreye dost, guvenli, hizli, ekonomik ve konforlu olan rayli tasima sistemini on plana cikarmaktadir. Ancak, rayli tasima sisteminde ulasilacak noktalar arasindaki baglantilarda tirmanma ve donme sinirlari gibi teknik zorluklar nedeniyle yerustu yapilarinin altindan gecmek gerekir. Bu nedenle sehirici rayli sistem tasimaciliginda tunelcilik zorunluluk olmaktadir. Izmir sehri ulasiminda bir cozum olan 44 km uzunlugundaki Izmir Hafif Rayli Sisteminin Yeni Avusturya Tunel acma yontemiyle acilan yaklasik 5,5 km’lik Ucyol-Fahrettin Altay Metro guzergâhini kapsayan kisminda tunel zemin/kaya iliskilerinin incelenmesi amaciyla; Avusturya tunel acma standarti olan ONORM kaya siniflama sistemine gore yuzdesel dagilimlar cikarilmis ve hakim kaya sinifi icin sayisal modelleme calismasi yapilmistir. Yapilan sayisal degerlendirmeye gore tunel guzergahinin %25’inin B2, %50’sinin B3 olmak uzere %75’lik kisminin B kaya sinifinda oldugu belirlenmistir. Bu durum gozonune alinarak ornek modellemeler B2-B3 kaya sinifi icin Izmirspor-Hatay Istasyonu arasinda kalan bolgede gerceklestirilmistir. Izmir Hafif Rayli Sistem Projesi 2. Asama Ikmal Insaati Yapim Isi kapsaminda acilan tunellerde farkli kaya siniflarinda uygulanan destekleme sistemleri Phase 2 v7.0 programi ile modellenerek tunel kesitinde olusacak toplam yer degistirmelerin (deplasmanlarin) analizi yapilmis ve yorumlanmistir Comparison of Numerical Modeling Studies Made for Different  Rock Classes- A Case Study At the present time, public transport system has become a necessity because of increasing urban population. Unplanned urbanization and lack of road brings rail transport system which is more environmentally friendly, safe, fast, economic and comfortable than road transportation into the forefront. But, it should be passed under the aboveground structure due to technical difficulties such as climbing and turning limits in rail transport system. Therefore, tunnelling has become a necessity in rail transport system. Izmir Light Rail System in the 44 km-long has been a solution in transportation of Izmir. Ucyol - Fahrettin Altay route, which is approximately 5.5 kilometers and was excavated with New Austrualian Tunneling Method, is a part of the Izmir light rail system. Percentage distributions were calculated according to ONORM rock classification system in order to examine tunnel-soil/rock relations in this route. Also, numerical modeling study was done for the dominant rock classes. According to the numerical evaluation, it was determined that  a large portion (75 %) of the Ucyol - Fahrettin Altay tunnel route is a B Rock Class (25% B2 and 50% B3). Considering this situation, modelling studies for B2-B3 rock classes were carried out in the region between Izmirspor Station and Hatay Station. Support systems in these rock classes were modelled with Phase 2 v7.0.  According to these modelling studies, analyses of total displacements which occur in tunnel section were made and interpreted by authors of this article.

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Farklı Kaya Sınıfları İçin Yapılan Sayısal Modelleme Çalışmalarının Karşılaştırılması-Örnek Uygulama - Comparison of Numerical Modeling Studies Made for Different Rock Classes- A Case Study