Geophysical and Geotechnical Studies for Electric Power Plants Project at the Sakarya River Zone, Turkey
Öz
Geophysical and geotechnical studies were conducted at
a proposed hydroelectric power plants facility at a site north of Sakarya river
D100(E-5) bridge in Adapazarı town of
Sakarya city in Turkey. The study is aimed at evaluating the competence
of the near surface formation as foundation materials. Geophysical and
geotechnical methods of investigation were adopted. The geophysical
investigation involved the Vertical Electrical Sounding (VES) technique using
the Schlumberger configuration, seismic refraction and geotechnical
investigative methods comprised of boreholes to 40 m depth with Standard Penetrating
Testing (SPT) and undisturbed Shelby tube, disturbed Split Spoon soil sampling,
triaxial compresssion and consolidation tests.
A total of five Vertical Electrical Soundings (VES)
and five seismic refraction profiles from different location within the study
area were used for the study. Water content, plasticity, and grain size
distribution characteristics are obtained from laboratory testing leading to a
classification of soils using the Unified Classification System.
The geophysical results revealed three distinct
geoelectric sequences which comprises of topsoil, weathered and partially
weathered layers. The topsoils composed of clay/silt/sand while the weathered
layer composed of silty sand. The partially weathered layer is formed of silty
clay. The geotechnical results show that the partly weathered layer has
relatively high clay content. Based on the consistency limits of the soils
within the area, the soil generally indicate firm plasticity, hence, the soils
are expected to exhibit medium swelling potential. There is no evident of
geological feature such as fracture/fault within the subsoil in the area.
Anahtar Kelimeler
Kaynakça
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Ayrıntılar
| Konular | Yer Bilimleri ve Jeoloji Mühendisliği (Diğer) |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 30 Aralık 2017 |
| Yayımlandığı Sayı | Yıl 2017 |