Integrated geotechnical and geophysical investigations in a landslide site at Jijel, Algeria

Mezerreg, Nour El Houda; Kessasra, Farès; Bouftouha, Youcef; Bouabdallah, Hamza; Bollot, Nicolas; Baghdad, Abdelmalek; Belounis, Rachid

doi:10.1016/j.jafrearsci.2019.103633

Cited by 15 publications

(21 citation statements)

References 39 publications

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“…They demarcated a margin between the clay and silt layers as the sliding surface of the landslide. Contrary to Pasierb et al (2019), we observed an uneven surface boundary between high‐ and low‐resistivity zones, and the estimated thickness of the low‐resistivity layer changes from 15 to 25 m. These observations are to some extent in line with those of Göktürkler et al (2008) from a Turkish landslide, as they observed the changes in thickness from 20 to 30 m. Mezerreg et al (2019) also performed a combined geotechnical and geophysical technique for landslide investigations in Jijel, Algeria, and distinguished four layers. They observed a shallow layer with low resistivity values ranging from 2 to 10 Ωm, that can be ascribed to a saturated lithological unit.…”

Section: Discussionsupporting

confidence: 86%

An integrated geotechnical and geophysical investigation of a catastrophic landslide in the Northeast Himalayas of Pakistan

et al. 2021

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Landslides are a complex geohazard, and the key parameters that have a prominent effect on their nature are variations in slope angle and fluctuations in groundwater. The focus of this research was to analyse the prevailing conditions of the Danna‐Sahotar landslide in the south of Muzaffarabad district, Sub‐Himalayas, Pakistan, and evaluating how different conditions effect the stability of the landslide with the integration of geotechnical, geophysical, and slope stability analysis. The geotechnical investigations revealed that the surface layer is mainly sandy with clayey and silty content. The two‐dimensional (2D) electrical resistivity tomography (ERT) demarcated the presence of a possible slip surface situated in the portion where the resistivity values clearly change. The ERT of the crown is characterized by low resistivity due to the presence of water seepages, which increase the degree of saturation and pore water pressure hence, leading to the slope failure. It was proved that the presence of high moisture content has played an influential role in triggering the landslide. Thorough analysis of integrated research yielded reliable and accurate information on the geotechnical and geological aspects of the landslide. The outcomes were used in slope stability limit equilibrium method (LEM) analysis using GeoStudio software. The slip surface predicted from the LEM was almost circular, which was confirmed by the geotechnical and ERT method. The factor of safety Fs (0.830) along the longitudinal profile of the landslide was calculated, indicating that the slopes along the profile are unstable. The geotechnical survey in combination with ERT and slope stability analysis helped to understand the failure mechanism of the landslide and to improve the layout of the future monitoring experiment, which may be used as a key for the observation of similar slope investigation.

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Section: Discussionsupporting

confidence: 86%

An integrated geotechnical and geophysical investigation of a catastrophic landslide in the Northeast Himalayas of Pakistan

et al. 2021

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“…Typically, in shallow seismic investigations, particularly landslide studies, the natural frequency used is 4.5 Hz (Capizzi and Martorana, 2014;Glade et al, 2005;Havenith et al, 2002;Havenith et al, 2000;Imani, 2020;Imani and Tian, 2018;Imani et al, 2021b;Jongmans et al, 2009;Karslı et al, 2017;Kim et al, 2011;Uhlemann et al, 2016;Vanlı Senkaya et al, 2019). However, geophones with higher frequencies (10, 14, and 28 Hz) are likely applied in sliding studies (Adamczyk et al, 2013;Bekler et al, 2011;Donohue et al, 2012;Glade et al, 2005;Godio et al, 2006;Grit and Kanli, 2016;Jacob et al, 2018;Mezerreg et al, 2019;Ng et al, 2015;Travelletti et al, 2010;Wang et al, 2016;Zainal Abidin et al, 2012). Since the reliability of the refraction results depends on the accuracy of the picking first break, the first onsets should be recognizable.…”

Section: Data Acquisitionmentioning

confidence: 99%

“…The number of shot points and their positions are the other parameters considered to provide high-resolution results. The multiple shot-points along with the survey line can produce more accurate data (Donohue et al, 2012;Jacob et al, 2018;Mezerreg et al, 2019;Narwold and Owen, 2002), better-layered velocity models, and interface depth estimation (Rucker, 2000). Samyn et al (2012) designated five profiles of sources perpendicular to the sliding direction and four geophone lines in the sliding direction in rugged topography and complex (flow and slide type) landslide studies using 3D SRT (Fig.…”

Section: Based Onmentioning

confidence: 99%

“…) and higher values in landslide bedrock (Bichler et al, 2004;Jongmans et al, 2009;Uhlemann et al, 2016). In most studies carried out in landslide areas using SRT, the first break collected included P-wave data (Armstrong et al, 2011;Bekler et al, 2011;Capizzi and Martorana, 2014;Donohue et al, 2012;Ferrucci et al, 2000;Göktürkler et al, 2008;Grit and Kanli, 2016;Havenith et al, 2002;Havenith et al, 2000;Heincke, 2005;Imani, 2020;Imani and Tian, 2018;Jacob et al, 2018;Karslı et al, 2017;Mezerreg et al, 2019;Nwankwo and Ugbena, 2019;Ostrowski and Lasocki, 2018;Otto and Sass, 2006;Samyn et al, 2012;Travelletti et al, 2010;Vanlı Senkaya et al, 2019;Zainal Abidin et al, 2012); however, some literature supplemented the landslide studies using S-wave refractions (Bichler et al, 2004;Jongmans et al, 2009;Ozcep et al, 2012;Uhlemann et al, 2016;Yilmaz and Kamaci, 2018).…”

Section: Based Onmentioning

confidence: 99%

“…The application of near-surface geophysical techniques has extensively increased. These methods can give reliable results obtained from the slope with a non-invasive, quick, and user-friendly technology (Al-Saigh and Al-Dabbagh, 2010;Bekler et al, 2011;Bichler et al, 2004;Capizzi and Martorana, 2014;Chen et al, 2019b;Donohue et al, 2012;Ferrucci et al, 2000;Göktürkler et al, 2008;Grit and Kanli, 2016;Havenith et al, 2002;Havenith et al, 2000;Imani et al, 2021a;Imani et al, 2021b;Jacob et al, 2018;Jongmans et al, 2009;Jongmans and Garambois, 2007;Karslı et al, 2017;Kim et al, 2011;Kul Yahşi and Ersoy, 2018;Mauritsch et al, 2000;Mezerreg et al, 2019;Ng et al, 2015;Nwankwo and Ugbena, 2019;Otto and Sass, 2006;Ozcep et al, 2012;Samyn et al, 2012;Solberg et al, 2012;Tomás et al, 2018;Travelletti et al, 2010;Wang et al, 2016;Yilmaz and Kamaci, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Landslide Investigation Using Seismic Refraction Tomography Method: A Review

Imani

El-Raouf

Tian

2021

Annals of Geophysics

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Since the early 1960s, near-surface seismic refraction tomography (SRT) has been extensively used as a non-invasive and cost-effective geophysical method to characterize complex geological structures for landslide investigation. This geophysical technique is able to characterize the slope material, the sliding surface's geometry, the landslide mass movement, the physical properties of media, and the water saturation effects on the slope. Therefore, this method has become an appropriate method due to the increasing progress of novel algorithms and the improvements of field-data collection systems. In this paper, we attempt to review the essential research that investigated various types of landslides influenced by water saturation and landslide materials and identified in various areas, since the year 2000. Significant conclusions obtained by applying different survey strategies and data processing algorithms in seismic refraction surveys are widely discussed concentrating on the advantages and disadvantages of this method. The main results obtained by the few available studies applying time-lapse SRT (TLSRT) are particularly analyzed.

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Characterization of an active landslide structure with integrated electrical resistivity tomography and multi‐channel analysis of surface waves methods in Değirmendere district, Sakarya (Türkiye)

Karaaslan,

Silahtar,

Ramazanoglu

2023

Earth Surf Processes Landf

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Landslides following the development of slope instability can have serious consequences. Geophysical surveys have potential to aid in the understanding of landslides and their instability. This study described a landslide that occurred under particular geomorphological and meteorological conditions in Erenler (Sakarya, NW Türkiye) using electrical resistivity tomography (ERT) and multi‐channel analysis of surface waves (MASW) surveys and mechanical drillings. Data showed that the landslide is characterized by downslope movement of an altered clay unit over a claystone unit. The traditional landslide model used to interpret geoelectric data involves sliding of a relatively low‐resistivity material over higher resistivity bedrock. Here, the ERT survey showed a relatively high‐resistivity sliding material moving over relatively low‐resistivity bedrock units corresponding to the claystone unit. The relatively lower resistivity of the whole study area was related to the clay‐rich materials detected in the boreholes. This low‐resistivity unit was detected at high velocity in the MASW section, and it was understood that this layer was a compact structure acting like bedrock. The detected slip surfaces, landslide scars and slip surface toe indicate that the movement character of the landslide is retrogressive. The study results showed that the integrated and comparative use of different geophysical methods effectively reduces interpretation uncertainties and potential errors and leads to much better landslide characterization.

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Integrated geotechnical and geophysical investigations in a landslide site at Jijel, Algeria

Cited by 15 publications

References 39 publications

An integrated geotechnical and geophysical investigation of a catastrophic landslide in the Northeast Himalayas of Pakistan

An integrated geotechnical and geophysical investigation of a catastrophic landslide in the Northeast Himalayas of Pakistan

Landslide Investigation Using Seismic Refraction Tomography Method: A Review

Characterization of an active landslide structure with integrated electrical resistivity tomography and multi‐channel analysis of surface waves methods in Değirmendere district, Sakarya (Türkiye)

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