Engineering geological investigations along the Iliksu Tunnels, Alanya, southern turkey

Koçkar M. K., Akgun H.

ENGINEERING GEOLOGY, cilt.68, ss.141-158, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 68
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0013-7952(02)00204-1
  • Dergi Adı: ENGINEERING GEOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.141-158
  • Anahtar Kelimeler: rock mass characterization, rock and soil slope stability, tunnel stability, finite element analysis
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The main objective of this study is to assess the engineering geological characteristics of the rock mass and to suggest appropriate support recommendations along the two autoroad tunnel projects, named as Iliksu 1 and lliksu 2, which are located along the Antalya-Alanya Highway. The study area consists of pelitic schist and calc schist overlain by a thick sequence of recrystallized limestone and an intercalation of pelitic schist, calc schist and graphite schist. The tunnel ground support types and categories were determined according to the Q-system, Rock Mass Rating (RMR) method and New Austrian Tunneling Method (NATM). Slope stability analyses were performed at the portal and cut slope sections. Kinematic and limit equilibrium analyses incorporating the effects of water pressure were performed for the failed rock slopes. Slope stability analyses of irregularly jointed, highly foliated lithologies were performed using soil slope stability software. The interactions of the tunnel support systems with the rock mass were analyzed through finite element analysis. (C) 2002 Elsevier Science B.V. All rights reserved.