Ordu Çevre Yolu boyunca duraylılık incelemeleri

The Eastern Black Sea region of Turkey accomodates indecent residence conditions for people owing to ground conditions comprising of volcanics and concurrent flysch, and its related irregular geomorphology. One of the important difficulties in this region is transportation. Accordingly, the ordu peripheral highway which encompasses various structures such as, open cuts, bridges, viaducts and junctions and double tubed tunnel sections which will be driven in these geological and geomorphological conditions is palnned to be constructed. In regional scale, volcanics, pyroclastics and flysch deposits often intertounge with each other even over very short distances. The accurate determination of the shear strength parameters of these lithologies is vital for the assessment of portal slope stability and support design in regards to tunnel design. Rock mass classification systems, namley, RMR, NGI Q system and GSI, have been employed to obtain the rock mass shear strength parameters. Stress analyses around the tunnel opennings have been executed through employing 2D finite element analysis in an attempt to design tunnel support. The results of the analysis have been correlated with the results obtained from the emprical methods. The overall analyses and interpretations led to the determination of the support systems to be employed during tunnel construction.M.S. - Master of Scienc

Antalya karstik zeminlerinin jeoteknik karakterizasyonun ve kaya kütlesi sınıflamasının yapılması.

This thesis identifies the geotechnical parameters of the Antalya karstic foundation rocks (travertine/tufa), which are highly variable in nature, by means of geological observations, geotechnical site investigations, and field and laboratory geomechanics tests to examine karstic (mainly tufa) rock mass behavior. Several geotechnical parameters such as porosity, seismic wave velocity, uniaxial compressive strength, Young’s modulus, tensile strength, etc. that are thought to have significant influence on rock mass behavior have been tested and statistically analyzed. Principal component analysis and multiple linear and non-linear regression analyses have been carried out in order to reveal correlations between the geotechnical parameters tested. Porosity has been statistically determined to be one of the major parameters governing the strength of the Antalya tufa rock mass. Intact rock failure criteria, among which Bieniawski’s criterion has been proven to be more appropriate for each tufa type (phytoherm framestone, phytoherm boundstone, microcrystalline tufa, phytoclast tufa and intraclast tufa) along with the Antalya tufa rock mass have been determined from the experiments. GSI rock mass classification of the Antalya tufa rock mass, whose GSI value was recommended between 20±5 and 75±5, has been attempted to be used in engineering design. Furthermore, the depth and dimension of the karstic cavities and fractures have been investigated by the geophysical tests, surface geological survey and subsurface investigations (borings and observation pits).Ph.D. - Doctoral Progra

Geotechnical assessment and engineering classification of the Antalya tufa rock, southern Turkey

This study mineralogically and geotechnically assesses the Antalya tufa rock types, which are highly variable in nature. Geological observations, geotechnical site investigations, and in-situ and laboratory tests have been performed to determine the parameters (i.e., organic matter content, rock fabric, apparent porosity, unit weight, uniaxial compressive strength, Young's modulus, tensile strength, cohesion and angle of internal friction) that may have a significant influence on tufa rock behavior and to develop a comprehensive geotechnical database for the Antalya tufa rock. The geotechnical database was utilized for the engineering classification of the Antalya tufa rocks using the GSI classification system

Engineering geological characterization of the Antalya karstic rocks, southern Turkey

This study encompasses engineering geological characterization of the Antalya karstic foundation rocks, particularly tufa, whose mechanical behavior is highly variable. The Antalya tufa rock has no well-developed discontinuity systems. It is variably porous, and is composed of different rock types with variable structures. To reveal the engineering geological parameters and to develop a thorough engineering geological database, which is not available in the literature for the Antalya tufa rock, geological observations, engineering geological site investigations, mineralogical analyses, field (plate load tests) and laboratory geomechanics tests have been performed. The physico-mechanical properties such as porosity, seismic wave velocity, uniaxial compressive strength, Young's modulus, deformation modulus, tensile strength, cohesion, angle of internal friction and other petrographic characteristics such as organic matter content and rock fabric that are expected to have a significant influence on its behavior were determined. Regression analyses have been performed to obtain relationships between the engineering geological parameters of the Antalya tufa rock. A number of good correlations (R-2 >= 0.75) obtained by regression analyses indicated that the Antalya tufa rock types could be differentiated better by using the strength parameters (namely, uniaxial compressive and tensile strength) and the index parameters (namely, unit weight and porosity)

Engineering geological characterization of the Antalya karstic rocks, southern Turkey

This study encompasses engineering geological characterization of the Antalya karstic foundation rocks, particularly tufa, whose mechanical behavior is highly variable. The Antalya tufa rock has no well-developed discontinuity systems. It is variably porous, and is composed of different rock types with variable structures. To reveal the engineering geological parameters and to develop a thorough engineering geological database, which is not available in the literature for the Antalya tufa rock, geological observations, engineering geological site investigations, mineralogical analyses, field (plate load tests) and laboratory geomechanics tests have been performed. The physico-mechanical properties such as porosity, seismic wave velocity, uniaxial compressive strength, Young's modulus, deformation modulus, tensile strength, cohesion, angle of internal friction and other petrographic characteristics such as organic matter content and rock fabric that are expected to have a significant influence on its behavior were determined. Regression analyses have been performed to obtain relationships between the engineering geological parameters of the Antalya tufa rock. A number of good correlations (R-2 >= 0.75) obtained by regression analyses indicated that the Antalya tufa rock types could be differentiated better by using the strength parameters (namely, uniaxial compressive and tensile strength) and the index parameters (namely, unit weight and porosity)