Investigation of an active landslide area with the Electrical Resistivity Tomography (ERT) and surface-wave analysis methods in Hendek, Sakarya

Hasan Karaaslan; Ali Silahtar

Makale detayları

Investigation of an active landslide area with the Electrical Resistivity Tomography (ERT) and surface-wave analysis methods in Hendek, Sakarya

Yazarlar:

Hasan Karaaslan | Ali Silahtar

Yayıncı:

Pamukkale University

Ana Başlıklar:

Yer Bilimleri ve Jeoloji Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 5, pp.686-695

Belge Tipi:

Makale

Yayın Tarihi:

10/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001330092

pISSN:

2147-5881

Anahtar kelimeler:

Özet:

 Landslides, one of the natural disaster problems, occur due to slope stability triggered by natural or human activities. Once such mass movements have begun, they are challenging to stop and, in some cases, almost impossible. Geophysical methods are very effective in determining the character and mechanical properties of landslides with a high resolution before or after mass movement. This study aims identifying the landslide that tends to continue in the Çamlıca neighborhood of the Hendek district of Sakarya province by electrical resistivity ERT, surface waves analysis MASW-ReMi, and mechanical soil drilling. The low resistivity and low shear wave velocity Vs unit in the geophysical sections was determined as a saturated clayey thick cover layer from the borehole log. This clayey unit causes mass movement on the slip surface. Andesite-basalt-containing bedrock unit under the slip surface has been identified as having high resistivity and high velocity in geophysical sections. The integrated use of geophysical methods in this landslide, determined as the progressive mechanism, contributed significantly to the realistic modeling of the landslide internal structure.

 Landslides, one of the natural disaster problems, occur due to slope stability triggered by natural or human activities. Once such mass movements have begun, they are challenging to stop and, in some cases, almost impossible. Geophysical methods are very effective in determining the character and mechanical properties of landslides with a high resolution before or after mass movement. This study aims identifying the landslide that tends to continue in the Çamlıca neighborhood of the Hendek district of Sakarya province by electrical resistivity ERT, surface waves analysis MASW-ReMi, and mechanical soil drilling. The low resistivity and low shear wave velocity Vs unit in the geophysical sections was determined as a saturated clayey thick cover layer from the borehole log. This clayey unit causes mass movement on the slip surface. Andesite-basalt-containing bedrock unit under the slip surface has been identified as having high resistivity and high velocity in geophysical sections. The integrated use of geophysical methods in this landslide, determined as the progressive mechanism, contributed significantly to the realistic modeling of the landslide internal structure.

 Landslides, one of the natural disaster problems, occur due to slope stability triggered by natural or human activities. Once such mass movements have begun, they are challenging to stop and, in some cases, almost impossible. Geophysical methods are very effective in determining the character and mechanical properties of landslides with a high resolution before or after mass movement. This study aims identifying the landslide that tends to continue in the Çamlıca neighborhood of the Hendek district of Sakarya province by electrical resistivity ERT, surface waves analysis MASW-ReMi, and mechanical soil drilling. The low resistivity and low shear wave velocity Vs unit in the geophysical sections was determined as a saturated clayey thick cover layer from the borehole log. This clayey unit causes mass movement on the slip surface. Andesite-basalt-containing bedrock unit under the slip surface has been identified as having high resistivity and high velocity in geophysical sections. The integrated use of geophysical methods in this landslide, determined as the progressive mechanism, contributed significantly to the realistic modeling of the landslide internal structure.

 Yıkıcı doğal afetlerden birisi olan heyelanlar, şev stabilitesinin doğa veya insan kaynaklı aktiviteler ile tetiklenmesi sonucu meydana gelmektedir. Bu tür kütle hareketlerini başladıktan sonra onları durdurmak çok zor ve hatta bazı durumlarda neredeyse imkânsızdır. Bu kütle hareketinin öncesi veya sonrasında, heyelanın karakterinin ve mekanik özeliklerinin yüksek çözünürlüklü belirlenmesinde jeofizik yöntemler oldukça etkilidir. Bu çalışmada Sakarya ili Hendek ilçesi Çamlıca Mahallesinde meydana gelen ve devam etme eğiliminde olan bir heyelanın elektrik özdirenç ERT, yüzey dalgaları analizi MASWReMi ve mekanik zemin sondajı ile tanımlanması amaçlanmıştır. Elde edilen jeofizik kesitlerdeki düşük özdirençli ve düşük kayma dalgası hızlı Vs birim sondaj logundan suya doygun killi kalın örtü tabası olarak belirlenmiştir. Kayma yüzeyi üzerinde kütle hareketine sebep olan bu birimin altındaki andezit-bazalt içerikli anakaya birimi jeofizik kesitlerde yüksek özdirençli ve yüksek hızlı olarak tespit edilmiştir. İlerleyici hareket mekanizmasına uygun olarak belirlenen bu heyelanda jeofizik yöntemlerin tümleşik kullanımı, heyelanın içyapısının gerçeğe yakın olarak modellenmesine önemli katkı sağlamıştır.

Makale detayları

Investigation of an active landslide area with the Electrical Resistivity Tomography (ERT) and surface-wave analysis methods in Hendek, Sakarya

Yazarlar:

Hasan Karaaslan | Ali Silahtar

Yayıncı:

Pamukkale University

Ana Başlıklar:

Yer Bilimleri ve Jeoloji Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 5, pp.686-695

Belge Tipi:

Makale

Yayın Tarihi:

10/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001330092

pISSN:

2147-5881

Landslide

Geophysics

Electrical Resistivity Tomography (ERT)

Surface-wave Analysis (MASW-ReMi)

Sakarya-HendekHeyelan

Jeofizik

Elektrik Rezistivite Tomografisi (ERT)

Yüzey dalgaları analizi (MASW-ReMi)

SakaryaHendek

Sayı

Makale detayları

Yazarlar: Hasan Karaaslan | Ali Silahtar

Yayıncı: Pamukkale University

Ana Başlıklar: Yer Bilimleri ve Jeoloji Mühendisliği (Diğer)

Dergi: Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 5, pp.686-695

Belge Tipi: Makale

Yayın Tarihi: 10/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001330092

pISSN: 2147-5881

Sayı

Yazarlar:

Hasan Karaaslan | Ali Silahtar

Yayıncı:

Pamukkale University

Ana Başlıklar:

Yer Bilimleri ve Jeoloji Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 5, pp.686-695

Belge Tipi:

Makale

Yayın Tarihi:

10/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001330092

pISSN:

2147-5881