Journal of Current Researches on Engineering, Science and Technology (JoCREST)

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Identification of Underground Formations of Bayburt Kırklartepe Dam Using Vp and RQD Parameters

It is very important to determine the rock and ground conditions of large engineering structures such as dams with preliminary geotechnical studies. In this study, Kırklartepe Dam in the central district of Bayburt was chosen as the study area, and the underground formations and geometry of the dam axis location were tried to be determined by geological and geophysical methods. For this purpose, the Vp velocity value was determined by applying the Seismic Refraction Tomography (SRT) method, one of the geophysical methods, on vertical lines instead of the dam axis in the study area. In addition, the RQD values were determined by examining the basic drilling samples taken at the dam axis site. The underground zoning with depth has been made by considering the Vp and RQD parameters obtained from SRT and RQD measurements applied at the dam axis site. In this study, the P wave velocity, which characterizes the alluvial zone obtained from the SRT measurement results, ranges between 300-950 m / s, and the alluvial zone thickness varied between approximately 0-15 m depth. In the SRT measurements made on the right and left slopes of the dam axis, it was determined that the transition from bad rock structure to very bad rock characteristics according to the RQD values and the velocity values from approximately 3200 m/s to 2200 m/s indicates the formation of a possible fault in the field of study.



Anahtar Kelimeler
Kırklartepe Dam, P-wave velocity, RQD

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