Paper Information

Journal:   JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)   FALL 2006 , Volume 16 , Number 61 (GEOLOGY ISSUE); Page(s) 41 To 49.
 
Paper: 

EFFECT OF DIP ON INTERPRETATION OF APPARENT RESISTIVITY CURVE IN SHORBULAGH DAM SITE

 
 
Author(s):  KHATAMI HAMID REZA*, NOUROUZIAN MASOUD, HAFIZI M.K.
 
* GEOLOGY DEPARTMENT, KARAJ BRANCH, ISLAMIC AZAD UNIVERSITY, KARAJ, IRAN
 
Abstract: 

In this study with the help of master curves of dipping beds, we try to find the dip of the layer and its elongation on depth. This study has helped us to choose best place for geotechnical borehole logging. Of course, we know that these master curves could not answer our question for depth more than about 60 meters.
The further correction will be made with the help of geological data, since available curves are suitable for homogeneous and isotropic Earth. These curves will be used for dipping layer with dip angle more than 20
°.
Early curves were calculated for two dipping layers. The best results were found when reflection coefficient is 1 and -1.
In this study we try to use these curves in the field. The field is Shorbulagh village near Karaj city for Dam construction. In this site there are three layers with 43° dip angle, sandstone and mudstone with reflection coefficient about -0.94. Four soundings were done with Schlumberger array, and the curves interpreted and the errors were shown.

 
Keyword(s): APPARENT RESISTIVITY CURVES, REFLECTION COEFFICIENTS, HARMONIC, ANALYSIS SHORBULAGH
 
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