Numerical Models of Unstable Slopes in Seismic Areas—Based on 3D Geomodels

Havenith, Hans-Balder; Mreyen, Anne-Sophie; Torgoev, Almaz; Micu, Mihai

doi:10.1007/978-3-319-53485-5_6

Cited by 5 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the basis of sections extracted from the 3D geomodels, slope failure processes may then be examined through complete back-analysis in order to assess the likelihood of a seismic trigger for those landslides. Related results are presented in a companion publication by Havenith et al (2017).…”

Section: Discussionmentioning

confidence: 94%

“…A complete back-analysis was carried out to assess the possibility of a seismic triggering of the landslide. The related numerical simulations will be exemplified with the case study applied to the Bévercé landslide (HFZ, Belgium) in a companion publication (Havenith et al 2017).…”

Section: Studied Sites General Context Of the Sites And Input Datamentioning

confidence: 99%

“…A small geotechnical field survey with the Schmidt Hammer was applied to determine additional rock parameters of the Permian conglomerate formation in the Bévercé landslide. These parameters are used for further numeric models (see companion paper Havenith et al 2017). The rebound force of a small hammer mass indicates the rebound value R on a relative hardness scale (values range from 0 to 100).…”

Section: Studied Sites General Context Of the Sites And Input Datamentioning

confidence: 99%

“…For both sites, all processed data have been integrated in a geomodel produced with the GOCAD (Paradigm 2013) and Leapfrog Geo (Leapfrog 2016) software, respectively. Here, only the first steps of the geomodel construction will be demonstrated; the further development of the models is partly explained in a companion paper by Havenith et al (2017).…”

Section: Geomodellingmentioning

confidence: 99%

See 3 more Smart Citations

Integrated Geological-Geophysical Models of Unstable Slopes in Seismic Areas

Mreyen

Micu

Onaca

et al. 2017

Advancing Culture of Living With Landslides

Self Cite

View full text Add to dashboard Cite

We will present a series of new integrated 3D models of landslide sites that were investigated in distinctive seismotectonic and climatic contexts: (1) along the Hockai Fault Zone in Belgium and (2) in the seismic region of Vrancea, Romania. Both sites are deep-seated failures located in more or less seismically active areas. In such areas, slope stability analyses have to take into account the possible contributions to ground failure. Our investigation methods had to be adapted to capture the deep structure as well as the physico-mechanical characteristics that influence the dynamic behaviour of the landslide body. Field surveys included electrical resistivity tomography profiles, seismic refraction profiles (analysed in terms of both seismic P-wave tomography and surface waves), ambient noise measurements to determine the soil resonance frequencies through H/V analysis, complemented by geological and geomorphic mapping. The H/V method, in particular, is more and more used for landslide investigations or sites marked by topographic relief (in addition to the more classical applications on flat sites). Results of data interpretation were compiled in 3D geological-geophysical models supported by high resolution remote sensing data of the ground surface. Data and results were not only analysed in parallel or successively; to ensure full integration of all inputs-outputs, some data fusion and geostatistical techniques were applied to establish closer links between them. Inside the 3D models, material boundaries were defined in terms of surfaces and volumes. Those were implemented in 2D and 3D numerical dynamic models (presented in a companion paper).

show abstract

Section: Discussionmentioning

confidence: 94%

Section: Studied Sites General Context Of the Sites And Input Datamentioning

confidence: 99%

Section: Studied Sites General Context Of the Sites And Input Datamentioning

confidence: 99%

Section: Geomodellingmentioning

confidence: 99%

See 2 more Smart Citations

Integrated Geological-Geophysical Models of Unstable Slopes in Seismic Areas

Mreyen

Micu

Onaca

et al. 2017

Advancing Culture of Living With Landslides

Self Cite

View full text Add to dashboard Cite

show abstract

“…Despite the enormous impact potential of giant landslides, especially of those triggered during earthquakes, relatively little effort is spent to predict them. Thus, only very few case histories are known where large sites (>1 km 2 ) had been thoroughly investigated to assess their failure potential under dynamic conditions, in full 3D (Havenith et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Developing conceptual models for the recognition of coseismic landslides hazard for shallow crustal and megathrust earthquakes in different mountain environments – an example from the Chilean Andes

Serey

Sepúlveda

Murphy

et al. 2020

QJEGH

View full text Add to dashboard Cite

Landslides represent the most frequent geological hazard in mountainous environments. Most notably, landslides are a major source of fatalities and damage related to strong earthquakes. The main aim of this research is to show through three-dimensional engineer-friendly computer drawings, different mountain environments where coseismic landslides could be generated during shallow crustal and megathrust earthquakes in the Andes of central Chile. We have determined topographic, geomorphological, geological and seismic controlling factors in the occurrence of earthquake-triggered landslides from: (1) a comparison of local earthquake-induced landslide inventories in Chile (the Mw 6.2, shallow crustal Aysén earthquake in 2007 (45.3° S) and the Mw 8.8, megathrust Maule earthquake in 2010 (32.5°S–38.5°S)) with others from abroad; and (2) analysis of large, prehistoric landslide inventories proposed as likely induced by seismic activity. With these results, we have built four representative geomodels of coseismic landslide geomorphological environments in the Andes of central Chile. Each one represents the possible landslide types that could be generated by a shallow crustal earthquake v. those likely to be generated by a megathrust earthquake. Additionally, the associated hazards and suggested mitigation measures are expressed in each scenario. These geomodels are a powerful tool for earthquake-induced landslide hazard assessment.Thematic collection: This article is part of the Ground models in engineering geology and hydrogeology collection available at: https://www.lyellcollection.org/cc/Ground-models-in-engineering-geology-and-hydrogeology

show abstract