An empirical strength criterion for the Antalya tufa rock, southern Turkey

2019-09-01
Sopaci, Evrim
Akgün, Haluk
Daemen, Jaak J. K.
This paper formulates an empirical strength criterion for the heterogeneous Antalya tufa rock mass assuming that the heterogeneity effect is represented by the unit weight and the porosity of the tufa rock, which is highly variable from a geomechanical point of view. Unconstrained non-linear regression analyses have been used to identify the strength criterion and material constants in terms of fitting an equation and determining its regression parameters. Prior to this approach, the fitting of the laboratory data to the failure criteria defined by Coulomb (Mem Acad R Des Sci 3:38, 1776), Bieniawski (J S Afr Inst Min Metal 74(8):312-320, 1974) and Hoek and Brown (J Geotech Eng Div ASCE 106(GT9):1013-1035, 1980) has been performed by means of constrained regression analyses. For the regression analyses, the results of the uniaxial and triaxial compressive strength tests along with the Brazilian tensile strength tests have been used. The regression analysis has been performed in two stages. In the first stage, the results of the uniaxial and triaxial compressive strength tests have been included in the analyses; in the second stage, the results of the Brazilian tensile strength tests have been added to the regression analyses performed in the first stage.
ENVIRONMENTAL EARTH SCIENCES

Suggestions

Assessment of discontinuous rock slope stability with block theory and numerical modeling: a case study for the South Pars Gas Complex, Assalouyeh, Iran
AZARAFZA, Mohammad; ASGHARI-KALJAHI, Ebrahim; Akgün, Haluk (Springer Science and Business Media LLC, 2017-06-01)
In this study, a geotechnical model has been used to analyze the stability of a discontinuous rock slope. The main idea behind block theory is that it disregards many different combinations of discontinuities and directly identifies and considers critical rock blocks known as "key blocks". The rock slope used as a case study herein is situated in the sixth phase of the gas flare site of the South Pars Gas Complex, Assalouyeh, Iran. In order to analyze the stability of discontinuous rock slopes, geotechnical...
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 ...
A van der Waals density functional investigation of carboranethiol self-assembled monolayers on Au(111)
Yılmaz, Ayşen; Danışman, Mehmet Fatih (2016-05-14)
Isolated and full monolayer adsorption of various carboranethiol (C2B10H12S) isomers on the gold(111) surface has been investigated using both the standard and van der Waals density functional theory calculations. The effect of different molecular dipole moment orientations on the low energy adlayer geometries, the binding characteristics and the electronic properties of the self-assembled monolayers of these isomers has been studied. Specifically, the binding energy and work function changes associated wit...
An investigation of the flow and scour mechanisms around isolated spur dikes in a shallow open channel: 2. Conditions corresponding to the final stages of the erosion and deposition process
Köken, Mete (American Geophysical Union (AGU), 2008-08-05)
Large eddy simulation (LES) is used to investigate the flow around a vertical spur dike in a straight channel with equilibrium scour bathymetry and the scour mechanisms in the later stages of the erosion deposition process. The equilibrium bathymetry is obtained from an experiment conducted at the same relatively low channel Reynolds number (Re = 18,000). Flow visualizations are used to complement the information obtained from the numerical simulation. The present investigation demonstrates that large-scale...
The polarization properties of the final state partyicles in the rare radiative b-meson decays
Yılmaz, Ümit Oktay; Turan, Gürsevil; Department of Physics (2005)
A general analysis of the photon and lepton polarizations in the rare Bs ? ?l+l- decay by using the most general model independent form of the effective Hamiltonian is presented. The total and the differential branching ratios for these decays, when photon is in the positive and negative helicity states, are studied. The sensitivity of "photon polarization asymmetry" and the longitudinal, transverse and normal polarization asymmetries of final state leptons, as well as lepton-antilepton combined asymmetries...
Citation Formats
E. Sopaci, H. Akgün, and J. J. K. Daemen, “An empirical strength criterion for the Antalya tufa rock, southern Turkey,” ENVIRONMENTAL EARTH SCIENCES, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48505.