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Topic 1 - Triggering, failure mechanics and kinematic evolution

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EXPERIMENTAL STUDIES ON 3D IMPULSE WAVES GENERATED BY RAPID LANDSLIDES AND DEBRIS FLOWS by Francesco Bregoli - University of Catalonia, Department of Hydraulic, Marine and Environmental Engineering, Technical, Sediment Transport Research Group (GITS) - C/Jordi Girona 1-3, Campus Norte UPC, Edifici D1, 08034 Barcelona, Spain Allen Bateman Pinzón - University of Catalonia, Department of Hydraulic, Marine and Environmental Engineering, Technical, Sediment Transport Research Group (GITS) - C/Jordi Girona 1-3, Campus Norte UPC, Edifici D1, 08034 Barcelona, Spain Vicente Medina Iglesias - University of Catalonia, Department of Hydraulic, Marine and Environmental Engineering, Technical, Sediment Transport Research Group (GITS) - C/Jordi Girona 1-3, Campus Norte UPC, Edifici D1, 08034 Barcelona, Spain Diego A. Gómez Cortés - University of Catalonia, Department of Hydraulic, Marine and Environmental Engineering, Technical, Sediment Transport Research Group (GITS) - C/Jordi Girona 1-3, Campus Norte UPC, Edifici D1, 08034 Barcelona, Spain DOI: 10.4408/IJEGE.2013-06.B-08 The input of material in a water body at high velocity, like a landslide or a debris flow, can induce a big, abnormal wave, known as impulse wave or landslide tsunami wave. Once the wave is triggered, the effects on the shorelines are devastating and moreover unlikely predicted. Disastrous past events have been extensively analysed but remain too scarce to properly describe the process. Experiments of impulse waves have been carried out by various authors. The present work was planned to fill the lack of ex Preview | Download Read More...
A PHYSICALLY-BASED SCALE APPROACH TO THE ANALYSIS OF THE CREEP PROCESS INVOLVING MT. GRANIERI (SOUTHERN ITALY) by Alberto Bretschneider - French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) – Nantes, France Rinaldo Genevois - University of Padua - Department of Geosciences - Padua, Italy Salvatore Martino - Sapienza University of Rome - Department of Earth Sciences and CERI Research Centre - Rome, Italy Alberto Prestininzi - Sapienza University of Rome - Department of Earth Sciences and CERI Research Centre - Rome, Italy Giuseppe Verbena - Tecnostudi Ambiente s.r.l. Professional Company - Rome, Italy DOI: 10.4408/IJEGE.2013-06.B-09 In January 1972, a rock slide of more than 2 million m3 moved along the north-eastern slope of Mt. Granieri (900 m above sea level), in the Allaro River basin, close to Salincriti village (Calabria region, southern Italy). Subsequent field investigations (geomechanical surveys and laboratory creep tests on rock samples ) validated the initially assumed ongoing “retrogressive” evolution of the phenomenon, which is mobilising a rock mass volume of about one million m3. Data from a remote monitoring system Preview | Download Read More...
A GEOMORPHOLOGICAL RECONNAISSANCE OF STRUCTURALLY-CONTROLLED LANDSLIDES IN THE DOLOMITES by Alan P. Dykes - School of Civil Engineering and Construction, Kingston University - London, United Kingdom Edward N. Bromhead - School of Civil Engineering and Construction, Kingston University - London, United Kingdom S. Mahdi Hosseyni - Dept. of Civil Engineering, I.A.U. Azadshahr Branch, Shahrood Road, Azadshahr, Golestan, 49617, Iran Maia Ibsen - School of Civil Engineering and Construction, Kingston University - London, United Kingdom DOI: 10.4408/IJEGE.2013-06.B-10 Preview | Download Read More...
GRAVITY-DRIVEN DEEP-REACHING DEFORMATIONS AND LARGE-SCALE LANDSLIDES IN RECENTLY UPLIFTED MOUNTAIN AREAS: THE CASE-STUDY OF MT. CUCCO AND BELPIANO (LIGURIAN APENNINE, ITALY) by Francesco Faccini - University of Genova - DISTAV - Corso Europa, 26 - 16132 Genova, Italy (faccini@unige.it) Andrea Robbiano - Engineering Geologist, Italy Emanuele Raso - Engineering Geologist, Italy Anna Roccati - Engineering Geologist, Italy DOI: 10.4408/IJEGE.2013-06.B-11 This work concerns with a DSGSD located in upper Sturla Valley (Northern Apennines, Italy), in the Municipality of Borzonasca, in an recently uplifted mountain area where the historic Belpiano hamlet was settled. The investigation of DSGSD was carried out through field survey, historic maps comparison, drilling and monitoring activities; seismic surveys were carried out in order to define the depth of the bedrock not involved in the DSGSD. The DSGSD origin is related to the slope particular geological str Preview | Download Read More...
MODELING OF RUNOUT LENGHT OF HIGH-SPEED GRANULAR MASSES by Francesco Federico - University of Rome “Tor Vergata” - Rome, Italy Chiara Cesali - University of Rome “Tor Vergata” - Rome, Italy DOI: 10.4408/IJEGE.2013-06.B-12 The power balance of a high speed granular mass sliding along planar surfaces is written by taking into account its volume, the slopes of the surfaces (runout and runup), an assigned basal fluid pressure and different possibilities for the energy dissipation. In particular, collisions acting within a thin layer (“shear zone”) at the base of the mass and shear resistance due to friction along the basal surface induce the dissipation of energy. The solution of the ODE describing the mass displacements vs Preview | Download Read More...
TOWARDS THE COMPREHENSION OF ROCKFALL MOTION, WITH THE AID OF IN SITU TESTS by Federica Ferrari - Università degli Studi di Milano - Dipartimento di Scienze della Terra “Ardito Desio” - Milano, Italy Gian Paolo Giani - Università degli Studi di Milano - Dipartimento di Scienze della Terra “Ardito Desio” - Milano, Italy Tiziana Apuani - Università degli Studi di Milano - Dipartimento di Scienze della Terra “Ardito Desio” - Milano, Italy DOI: 10.4408/IJEGE.2013-06.B-13 Rockfalls frequently occur in Alpine areas, creating serious risks to population and buildings; the protection measures against rockfalls cannot be adequately designed unless the comprehensive understanding of rockfall phenomenon. Some experimental rockfall tests have been performed on a talus slope in Grosina Valley (northern Italy), with the aim to check the reliability of common simulation methods and to analyse the motion of falling blocks. First, a-priori kinematic simulations have been performed, and, Preview | Download Read More...
MICROSEISMICITY RELATED TO GRAVITY-INDUCED SLOPE DEFORMATIONS FOR RISK MANAGEMENT by Luca Lenti - Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux (IFSTTAR-Paris) Salvatore Martino - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI - Rome, Italy Antonella Paciello - Agenzia Nazionale per le Nuove Tecnologie, l‘Energia e lo Sviluppo Economico Sostenibile (ENEA) - C.R. Casaccia - Rome, Italy Alberto Prestininzi - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI - Rome, Italy Stefano Rivellino - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI - Rome, Italy DOI: 10.4408/IJEGE.2013-06.B-14 An accelerometric array installed on 4 September 2008, has been used to manage the geological risk in the Peschiera Springs drainage plant of Rome’s aqueduct, located in the Central Apennines approximately 80 km from Rome, Italy. The plant occupies a carbonatic slope that is extensively involved in gravitational deformations, which are responsible for underground failures such as cracks and collapses of karst caves. To distinguish among different types of recorded events, an automated procedure was implem Preview | Download Read More...
PORE PRESSURE DISTRIBUTIONS IN BRITTLE TRANSLATIONAL ROCKSLIDES by Simon Loew - Engineering Geology - Sonnegstrasse 5, ETH Zurich, CH-8092 Zurich, Switzerland Thomas Strauhal - alpS - Centre for Climate Change Adaptation Technologies - Grabenweg 68 - A-6020 Innsbruck, Austria / University of Innsbruck - Institute of Geology and Paleontology - Innrain 52 - A-6020 Innsbruck, Austria DOI: 10.4408/IJEGE.2013-06.B-15 In this paper, we systematically study steady-state pore pressure conditions in translational brittle rockslides, with special focus on saturated and unsaturated flow in variably fractured rock masses. The study includes a discussion of critical hydraulic borehole observations in translational rockslides from British Columbia, Norway and the Italian Alps and explains these observations with a generic numerical rockslide model. Most key observations, such as piezometric pore pressure levels at the base of tr Preview | Download Read More...
THERMO-HYDRO-MECHANICAL ANALYSIS FOR THE SIMULATION OF RAPID SLIDING PROCESS IN A NEW AND FAST RING SHEAR PROTOTYPE by Victor Serri - Universitat Politècnica de Catalunya - Department of Geotechnical Engineering and Geosciences - Campus Nord UPC, Building D2 c/ Jordi Girona 1-3 - 08034 Barcelona, Spain Enrique Romero - Universitat Politècnica de Catalunya - Department of Geotechnical Engineering and Geosciences - Campus Nord UPC, Building D2 c/ Jordi Girona 1-3 - 08034 Barcelona, Spain Antonio Lloret - Universitat Politècnica de Catalunya - Department of Geotechnical Engineering and Geosciences - Campus Nord UPC, Building D2 c/ Jordi Girona 1-3 - 08034 Barcelona, Spain Josep Suriol - Universitat Politècnica de Catalunya - Department of Geotechnical Engineering and Geosciences - Campus Nord UPC, Building D2 c/ Jordi Girona 1-3 - 08034 Barcelona, Spain Eduardo E. Alonso - Universitat Politècnica de Catalunya - Department of Geotechnical Engineering and Geosciences - Campus Nord UPC, Building D2 c/ Jordi Girona 1-3 - 08034 Barcelona, Spain DOI: 10.4408/IJEGE.2013-06.B-16 Vajont was a case of an extremely fast landslide and efforts to clarify the failure have been mainly concentrated in providing a consistent explanation taking into account this characteristic feature. Particularly in the case of Vajont landslide, attention has been essentially focused on the shearing properties of the sliding surface. An accepted explanation for the velocity reached is the thermo-hydraulic-mechanical coupling under saturated conditions, which induces thermal dilation and effective stress r Preview | Download Read More...
FIELD STUDY AND BIDIMENSIONAL NUMERICAL SIMULATION OF RUNOUT AND DEPOSITION OF LA MAROGNA ROCKSLIDE (VICENZA, ITALY) by Pia Rosella Tecca - CNR - IRPI - Padua, Italy Rinaldo Genevois - Università degli Studi di Padova - Dipartimento di Geoscienze - Padua, Italy Andrea Maria Deganutti - CNR - IRPI- Padua -Italy Marco Dal Prà - Professional geologist DOI: 10.4408/IJEGE.2013-06.B-17 The study of ancient major rock slope instabilities may help in the detection of the conditions leading to their development, so that consequences and possible prevention and mitigation actions can be envisaged. In this paper, numerical studies have been carried out to recognize the behavior of a rock slope and the kinematics of a rock slide/avalanche in the north-eastern Italian Alps. The “La Marogna” rock avalanche, in the Vicenza Province (Venetian Pre-Alps, North-Eastern Italy), with a volume of ab Preview | Download Read More...
RAINFALL THRESHOLDS FOR DEEP-SEATED RAPID LANDSLIDES by Taro Uchida - National Institute for Land and Infrastructure Management - Ibaraki, Japan Atsushi Okamoto - National Institute for Land and Infrastructure Management - Ibaraki, Japan Jun' ichi Kanbara - National Institute for Land and Infrastructure Management - Ibaraki, Japan Kazumasa Kuramoto - Chuden Engineering Consultants Co., Ltd. - Hiroshima, Japan DOI: 10.4408/IJEGE.2013-06.B-18 Soils and weathered bedrock have been known to slide simultaneously, with the resulting landslides sometimes moving rapidly and triggering debris flows. In this study, we refer to these landslides as deep-seated rapid (catastrophic) landslides (hereafter, DCLs). DCLs can result in serious damage, although the frequency of such disasters is generally low. Therefore, early warning systems and the construction of countermeasures for DCLs are important tools for disaster risk reduction. We analyzed the characte Preview | Download Read More...


	Content © 2018 Italian Journal of Engineering Geology and Environment This is the new scientific journal of the Research Center CERI