Student:	Ersin DURSUN
Supervisor:	Prof. Dr. H. Hulusi ACAR
Department:	Orman Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	A Preliminary Investigation of Ground Structure of Forest Road Routes with Geophysical Methods
Level:	M.Sc.
Acceptance Date:	31/12/2008
Number of Pages:	72
Registration Number:	i1988

Summary:

In this study, ground structure in alternative forest road routes has been investigated by

means of geophysical methods. With this study it has been aimed that with defining way

route which is the most appropraite fort the ground and the lowest in the cost, we will get the

accurate results for the planning, bidding, building process in terms of technical, economical,

ecological and timing of forest road buildings which will be done in the future.

As a study field, the forest way of Işıklar Mezra-Kalecik Mezra, coded 81 in the border

400 meters part of the forest road the ground was analzed with electricity impedance method.

Also, from 10 meters up of forest road route measurements were done with electricity

impedance method, seismic method and Ground Penetrating Radar method along 100 meters.

As a result of the measurements, parameters of the ground were gathered.

In the surveys carried out on the field, it has been monitored that there are rocks, hard

rocks, very hard rocks on the points where impedance value is high and there are dissolved

rocks and hillside ruble where impedance value is low. With the seismic break method

applied in the survey field approximately 16 meters of depth has been surveyed and a

laminated structure has been detected. It has been detected that the first laninat thickness of

the field is between 3-8 meters and has been formed of dissolved rocks, the second laminat

thickness of the field is approximately 1 meter and is formed of dissolved rocks, the third

laminat is formed of hard rocks. On the measures carried out with the Ground Penetrating

Radar method a specific laminat order could not be made.

As a result, when compared geophysical methods it has been assessed that the most

successful method is seismic method in terms of applying to forest fields and having right

results. With this method a detailed study mus be carried out on survey of the morphological

structure of forest way route.

Key Words: Forest Road Route, Ground Analysis, Electricity Impedance Method, Seismic

Method, Ground Penetrating Radar method, Mountainous Field.