Assessment of core-filter configuration performance of rock-fill dams under uncertainties

Calamak M., Yanmaz A. M.

International Journal of Geomechanics, cilt.18, sa.4, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1061/(asce)gm.1943-5622.0001114
  • Dergi Adı: International Journal of Geomechanics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Rock-fill dams, Core, Filter, Uncertainty, Seepage analysis, Monte Carlo simulations, TRANSIENT UNSATURATED FLOW, STOCHASTIC-ANALYSIS, HYDRAULIC CONDUCTIVITY, HETEROGENEOUS SOILS, GROUNDWATER-FLOW, FINITE DOMAINS, MEDIA, MODEL
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

© 2018 American Society of Civil Engineers.Probabilistic analyses are conducted for seepage through a rock-fill dam having two different core-filter configurations: one sloping and the other a central symmetrical core-filter arrangement. Uncertainties in core and filter are considered, assuming their hydraulic conductivities as random variables. For this purpose, finite-element software used for groundwater flow and seepage analyses is coupled with a random-number-generation algorithm. Monte Carlo simulations are performed for probabilistic seepage analyses. The suggested method is applied to a 30-m-high rock-fill dam. Results showed that the uncertainty in core and filter causes a decrease in the seepage rates of both configurations. It is concluded that in case of uncertainty, the central symmetrical core-filter configuration is more successful than the sloping configuration in decreasing seepage.