Determining the stress and convergence at Beypazari trona field by three-dimensional elastic-plastic finite element analysis: A case study

Aksoy C. O., Onargan T., Yenice H., Küçük K., Kose H.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, cilt.43, sa.2, ss.166-178, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.ijrmms.2005.06.004
  • Dergi Adı: INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.166-178
  • Anahtar Kelimeler: Beypazari trona mine, numerical modeling, finite element method, natural soda ash, underground opening
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this paper, deformation and failure characteristics of the main drift, T-2000, and a roadway, T-3000 excavated for Beypazari trona (natural soda) underground mine, which is located in Ankara, Turkey, were investigated by in situ measurements and numerical analysis. T-2000 was planed as a main drift with a length of 965 m, 14 degrees inclined and excavated with an area of 18 m(2). The T-3000 roadway was driven in the trona ore body for the first stope. Load and convergence measurements were carried out at seven stations installed in main drift (T2000) and roadway (T3000). Measurement results indicate that the total convergences at all the stations were below 1% of the total gallery height and deformation rates were reduced significantly. Three-dimensional numerical modeling was performed to analyze the deformation and failure behavior of the drift for three different models using an elastoplastic finite element method (FEM) approach considering Drucker-Prager failure criterion. The results of the numerical analyses were found to be comparable with in situ measurements. (c) 2005 Elsevier Ltd. All rights reserved.