مرکز منطقه ای اطلاع رساني علوم و فناوري - A Study on Determination of forest road routes by Sismic Ground Analysis Method

Abstract :

In this study, the use of seismic geophysical method has been investigated, in order to detection of accurate forest roads., the forest road route (No. 81 code) that it was built in 2007 within Trabzon-Düzköy boundaries were examined in the study. Measurements in the study area was conducted between May and December in 2008. The Standard, the total length and average slope of reviewed forest road, was the B-type, 5 +200 km and 5%, respectively. Measurements were carried out in the excavation slope of road, 10 m away from the road axis and parallel to the road by Geometrics seismic Smartseis 12 models. It was determined P wave velocity (Vp), S wave velocity (Vs), density (d) (gr/cm^3), shear modulus (μ) (kg/cm^2), elasticity modulus (Ed) (kg/cm^2), bulk modulus (Kd) (kg/cm^2), Poisson ratio (a), soil bearing capacity (qu) (kg/cm^2), and ground safety stress (qs) (kg/cm^2) parameters. As a result of the investigation, it has been identified that examined forest road has a layered structure. Layers are named by the way deep into the ground as Layer 1, Layer 2 and Layer 3. Average thickness of layers are 3-8 m, 1 m and then, respectively. Rock types of layers are very weathered, weathered rocks and rock solid, respectively. As a result of the study, it was examined that it was not necessary risks such as blast, liquefaction, residence, migration, and swelling in the forest road route.