Characterization and analysis of a translational rockslide on a stepped-planar slip surface

Tannant, Dwayne D.; Giordan, Daniele; Morgenroth, Josephine

doi:10.1016/j.enggeo.2017.02.004

Cited by 26 publications

(12 citation statements)

References 14 publications

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“…Our results show that the mean 3-D accuracy was 4.9 cm. It is comparable with the ground resolution of 1-3.5 cm pixel −1 of an Italian rockslide survey (Tannant et al, 2017) or 3.3-4.1 cm . This resolution was appropriate for creating a reliable digital surface model.…”

Section: Discussionsupporting

confidence: 52%

“…To overcome this problem, RPASgenerated images were used; the frequency of joints was observed based on these images like in previous studies by Assali et al (2014), Martino and Mazzanti (2014) and Margottini et al (2015). The required resolution for joint frequency is of the order of 10 cm, rarely 1 cm (Tannant, 2015;Tannant et al, 2017). The RPAS technique allows for plane surface geometries; however, many joints are not plane surfaces and there are sets in shadows that are difficult to visualize.…”

Section: Discussionmentioning

confidence: 99%

“…The documentation of joint system and discontinuities are crucial for rock wall stability assessment (Tannant et al, 2017). A field survey can only provide reliable data on joint orientation of accessible areas (Margottini et al, 2015); however, the joint system that was found on inaccessible cliffs was not detectable.…”

Section: Discussionmentioning

confidence: 99%

“…The obtained 1174 images covered the entire study area with appropriate overlap. The number of images is reasonable, since in previous studies 400 images were taken for a smaller translational rockslide by a GoPro Hero 3 Black camera (Tannant et al, 2017) or approx. 400-900 images with a higher resolution camera (18 MP) for a landslide area that is approximately five times larger than this one (Lindner et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Slope stability and rockfall assessment of volcanic tuffs using RPAS with 2-D FEM slope modelling

Török

Barsi

Bögöly

et al. 2018

Nat. Hazards Earth Syst. Sci.

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Abstract. Steep, hardly accessible cliffs of rhyolite tuff in NE Hungary are prone to rockfalls, endangering visitors of a castle. Remote sensing techniques were employed to obtain data on terrain morphology and to provide slope geometry for assessing the stability of these rock walls. A RPAS (Remotely Piloted Aircraft System) was used to collect images which were processed by Pix4D mapper (structure from motion technology) to generate a point cloud and mesh. The georeferencing was made by Global Navigation Satellite System (GNSS) with the use of seven ground control points. The obtained digital surface model (DSM) was processed (vegetation removal) and the derived digital terrain model (DTM) allowed cross sections to be drawn and a joint system to be detected. Joint and discontinuity system was also verified by field measurements. On-site tests as well as laboratory tests provided additional engineering geological data for slope modelling. Stability of cliffs was assessed by 2-D FEM (finite element method). Global analyses of cross sections show that weak intercalating tuff layers may serve as potential slip surfaces. However, at present the greatest hazard is related to planar failure along ENE-WSW joints and to wedge failure. The paper demonstrates that RPAS is a rapid and useful tool for generating a reliable terrain model of hardly accessible cliff faces. It also emphasizes the efficiency of RPAS in rockfall hazard assessment in comparison with other remote sensing techniques such as terrestrial laser scanning (TLS).

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Slope stability and rockfall assessment of volcanic tuffs using RPAS with 2-D FEM slope modelling

Török

Barsi

Bögöly

et al. 2018

Nat. Hazards Earth Syst. Sci.

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“…All these papers considered the use of RPASs as a valid solution for the acquisition of DSM over sub-vertical areas. Török et al (2018) and Tannant et al (2017) also described in their papers how RPAS DSMs can be used for the evaluation of slope stability using numerical modelling. Fan et al (2017) analysed the geometrical features and provided the disaster assessment of a landslide that occurred on 24 June 2017 in the village of Xinmo in Maoxian County (Sichuan province, south-west China).…”

Section: Landslide Susceptibility and Hazard Assessmentmentioning

confidence: 99%

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

Giordan

Hayakawa

Nex

et al. 2018

Nat. Hazards Earth Syst. Sci.

145

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Abstract. The number of scientific studies that consider possible applications of remotely piloted aircraft systems (RPASs) for the management of natural hazards effects and the identification of occurred damages strongly increased in the last decade. Nowadays, in the scientific community, the use of these systems is not a novelty, but a deeper analysis of the literature shows a lack of codified complex methodologies that can be used not only for scientific experiments but also for normal codified emergency operations. RPASs can acquire on-demand ultra-high-resolution images that can be used for the identification of active processes such as landslides or volcanic activities but can also define the effects of earthquakes, wildfires and floods. In this paper, we present a review of published literature that describes experimental methodologies developed for the study and monitoring of natural hazards. IntroductionIn the last three decades, the number of natural disasters showed a positive trend with an increase in the number of affected populations. Disasters not only affected the poor and characteristically more vulnerable countries but also those thought to be better protected. The Annual Disaster Statistical Review describes recent impacts of natural disasters on the population and reports 342 naturally triggered disasters in 2016 (Guha-Sapir et al., 2017). This is less than the annual average disaster frequency observed from 2006 to 2015 (376.4 events). However, natural disasters are still responsible for a high number of casualties (8733 death). In the period 2006-2015, the average number of causalities caused annually by natural disasters is 69 827. In 2016, hydrological disasters (177) had the largest share in natural disaster occurrence (51.8 %), followed by meteorological disasters (96; 28.1 %), climatological disasters (38; 11.1 %) and geophysical disasters (31; 9.1 %) (Guha-Sapir et al., 2017). To face these disasters, one of the most important solutions is the use of systems able to provide an adequate level of information for correctly understanding these events and their evolution. In this context, surveying and monitoring natural hazards gained importance. In particular, during the emergency phase it is very important to evaluate and control the phenomenon of evolution, preferably operating in near real time or real time, and consequently, use this information for a better risk assessment scenario. The available acquired data must be processed rapidly to support the emergency services and decision makers.Recently, the use of remote sensing (satellite and airborne platform) in the field of natural hazards and disasters has become common, also supported by the increase in geospatial technologies and the ability to provide and process up-to-date imagery (Joyce et al., 2009;Tarolli, 2014). Remotely sensed data play an integral role in predicting hazard events such as floods and landslides, subsidence events and other ground instabilities. Because of their acquisition mode and capabilPublished by Copern...

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The Application of Unmanned Aerial Vehicles (UAV) for Slope Mapping with the Determination of Potential Slope Hazards

Zolkepli

Ishak

Wahap

2022

Advanced Structured Materials

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Characterization and analysis of a translational rockslide on a stepped-planar slip surface

Cited by 26 publications

References 14 publications

Slope stability and rockfall assessment of volcanic tuffs using RPAS with 2-D FEM slope modelling

Slope stability and rockfall assessment of volcanic tuffs using RPAS with 2-D FEM slope modelling

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

The Application of Unmanned Aerial Vehicles (UAV) for Slope Mapping with the Determination of Potential Slope Hazards

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