Combined instability assessment and rockfall hazard in volcanic rocks (Keçiören, Ankara)

Ulamiş, Koray; Kılıç, Recep

doi:10.1007/s12517-020-05338-2

Cited by 15 publications

(4 citation statements)

References 34 publications

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“…In the case that the rock block has obtained the initial velocity, the rock block motion is described by Equations ( 7) and (8). The initial mechanical energy E m0 is described as follows:…”

Section: Theoretical Framework Of Rockfall Kinetic Energymentioning

confidence: 99%

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Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece

Servou

Vagenas

Depountis

et al. 2023

Land

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Rockfall analysis is a multiparametric procedure with many uncertainties and the outputs are largely dependent on some critical engineering geological parameters involved in the used simulation model. In this paper, three completely different limestone rock sequences, named Pantokratoras, Vigla, and Paxos limestones along the western coastal slopes of Lefkada island, in Greece, are examined regarding their rockfall susceptibility as expressed by produced kinetic energy, under aseismic and seismic conditions. A rockfall inventory was prepared through detailed field measurements after the extensive rockfalls which were caused by the strong earthquake of November 2015, while engineering geological surveys were systematically conducted on the limestone rock masses. Two case scenarios were adopted for the rockfall simulations: one without the horizontal initial velocity of the detached rock boulder and the other with an estimated value obtained from the peak ground velocity (PGV) of the main seismic shock. Two-dimensional rockfall simulations were performed in selected cross-sections for each rock mass, and spatial distribution maps of the intensity (kinetic energy) were generated. A comparison of the maps has shown a strong maximum variation in the intensity levels among the three rock masses mainly due to the differential size of the detached boulders because of the inherent engineering geological characteristics of the rock masses. The results show that the earthquake ground velocity generally leads to a fluctuating change in the intensity values due to the trajectory shape and increases the rockfall magnitude as the main triggering factor.

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Section: Theoretical Framework Of Rockfall Kinetic Energymentioning

confidence: 99%

“…The next stage is the rockfall risk assessment [5]. Some studies emphasize designing mitigation measures against rockfall hazards, based on the site-specific characteristics, to protect the slope use, considering the rockfall trajectories simulation, kinetic energy, and the bounce height of the rock blocks [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece

Servou

Vagenas

Depountis

et al. 2023

Land

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“…The mechanical rock mass classi cation remains a very powerful tool for the characterization of rocky slopes (Ulamış & Kılıç, 2020). Initially developed by Bieniawski (1973) for tunnels and dam foundations, it has undergone various modi cations where it was adjusted later to the mechanical characterization of rocky slopes (Romana, 1985 andTomas et al, 2012).…”

Section: -3-rock Mass Characterizationmentioning

confidence: 99%

“…Since the study area alongside the road is mostly dominated by fractured bedrocks, failure analysis of the slopes by the evaluation of the mechanic conception of the rock remains the best solution to meet the needs. Ulamış & Kılıç, 2020). Therefore, the RMR value to estimate the quality of the rock mass and then the average value of the SMR index computed for the different discontinuity sets has been considered to be the most representative value of rock-slope failure evaluation (Irigaray et al, 2003;Siddique et al, 2015; J.…”

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confidence: 99%

Coastal rocky slopes instability analysis and landslide frequency-area distribution alongside the road network in west Mediterranean context (Northern of Morocco)

Obda

Kharim

Obda

et al. 2022

Preprint

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The Mediterranean coasts are known for their tourist attractiveness due to its richness in fishing resources and beach resorts as well as landscapes at the level of different ecosystems (forests, rocky and sandy beaches). The construction of the Mediterranean coastal road (RN16), which aims to enhance the tourist value of these resources and to improve access to this coastal region, has triggered an almost radical modification in the development process of this area, where the risks are increasing because of the multiplication of the challenges and the hazards due to the instability of its slopes. These events are mainly the result of marine erosion, the involvement of geological, geomorphological, climatic factors and also anthropic parameters with a strong littoralisation. The study area is characterized by active tectonics translated by the presence of faulting sets affecting the rock mass. The aim of this study is to assess the characteristics of the rock mass and its stability, and to anticipate landslide occurrence frequency with a particular size in a specified region with a certain rock mass quality as well. The methodology followed in this work consists of the elaboration of a complete inventory of landslides, the fracturation analysis and the rock mass engineering conducted to evaluate the stability of the slopes and the statistical analysis of the landslide size distribution. The combination of these two approaches has allowed us to assess qualitatively and quantitatively the landslide hazard on coastal rocky fractured areas.

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Experimental study on the influence of morphological parameters on kinematics of rockfall trajectory

Ge,

Chen,

et al. 2024

Bull Eng Geol Environ

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Combined instability assessment and rockfall hazard in volcanic rocks (Keçiören, Ankara)

Cited by 15 publications

References 34 publications

Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece

Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece

Coastal rocky slopes instability analysis and landslide frequency-area distribution alongside the road network in west Mediterranean context (Northern of Morocco)

Experimental study on the influence of morphological parameters on kinematics of rockfall trajectory

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