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

Date

2018-04-01

Author

Çalamak, Melih
Yanmaz, Ali Melih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

243
views

0
downloads

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.

Subject Keywords

Soil Science

URI

https://hdl.handle.net/11511/46878

Journal

International Journal of Geomechanics

DOI

https://doi.org/10.1061/(asce)gm.1943-5622.0001114

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

STATISTICAL PARAMETERS CHARACTERIZING THE SPATIAL VARIABILITY OF SELECTED SOIL HYDRAULIC-PROPERTIES Ünlü, Kahraman; BIGGAR, JW; MORKOC, F (Wiley, 1990-11-01) The knowledge of the statistical parameters of the variance, sigma-2, and the correlation scale, lambda, characterizing the spatial structures of the log of the saturated hydraulic conductivity, lnK(s), pore size distribution parameter alpha, and the specific water capacity, C, is required in stochastic modeling in order to understand the overall response of large-scale heterogenous unsaturated flow systems. These parameters are estimated assuming second-order stationarity and an exponential semivariogram ...
Effective Stress and Shear Strength of Moist Uniform Spheres Toker, Nabi Kartal; Culligan, Patricia J. (Wiley, 2014-05-01) In continuum soil mechanics, the mechanical behavior of an element of soil is related to the effective stress, which is a measure of the average stress transmitted through the solid matrix in the form of contact stresses. In unsaturated soils, the coexistence of water and air within the soil pore space complicates this concept because the microscopic distribution of each fluid phase in soil pores cannot be known. Because it is thus not possible to physically measure effective stress in unsaturated soils, it...
Uncertainty quantification of transient unsaturated seepage through embankment dams Çalamak, Melih; Yanmaz, Ali Melih (American Society of Civil Engineers (ASCE), 2017-06-01) Sensitivity analysis is conducted to investigate the effects of uncertainty in hydraulic conductivity and van Genuchten parameters on transient seepage. To this end, a random number generator is used to generate random values from probability distributions of each parameter. The generator is coupled with finite-element software that handles seepage analysis in porous media. The Monte Carlo simulation approach is adopted for stochastic seepage analyses. The suggested method is applied on a homogeneous dam ma...
Evaluation of surface soil geochemical data and statistical modeling of akarca fula tepe low sulfidation epithermal au-ag mineralization (Bursa), Turkey Bal, Derya; Karahanoğlu, Nurkan; Department of Geological Engineering (2015) The Akarca property is dominated by Triassic sedimentary units that tectonically overlie Pre-Triassic basement rocks (schists and marbles). The property displays characteristics of a low sulfidation Au-Ag deposit type in terms of alteration, mineralization and vein textures. The Akarca property is characterized by six primary mineralized zones. Among these zones, Fula Tepe Zone formed the subject of this thesis. The main aim of this dissertation is to evaluate the results of surface soil geochemistry data a...
Comparative study of soil water characteristic curve prediction methods Ahmadiadli, Mohammad; Huvaj Sarıhan, Nejan; Toker, Nabi Kartal; Kürkçü, Mefküre Gamze (2012-06-30) The soil-water characteristic curve (SWCC), which defines the relation between soil suction and water content, plays a key role in geotechnical studies of the unsaturated soils. Some researchers such as Brooks & Corey (1968), Van Genuchten (1982) and Fredlund& Xing (1994) have proposed curve fitting equations for SWCC. Fitting equations to the laboratory test data obtained from direct measurement of water content versus changes in matric suction is the most reliable method, but it is expensive and time cons...

Citation Formats

M. Çalamak and A. M. Yanmaz, “Assessment of core-filter configuration performance of rock-fill dams under uncertainties,” International Journal of Geomechanics, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46878.