Rockfalls are frequent and damaging hazard in mountainous regions and coastal cliffs. They are also frequent in cut slopes of the transportation corridors, in quarries and other excavations. Significant progress has been achieved in the last decades, particularly in the characterization of the rock masses at the potential rockfall sources, in detecting premonitory instability features and monitoring of displacements, in the rockfall modeling and in the design of both protective and stabilization measures. The analysis and management of the rockfall hazard and risk often requires a multidisciplinary approach. The aim of the workshop is to bring together earth scientists, engineers, practitioners, decision makers and end-users, in order to discuss and evaluate new methods, models and approaches for the analysis and management of the rockfalls that have been recently developed.

Previous workshops were held in Japan (Kanazawa 1999), France (Vaujany 2005, organized by Irstea), Switzerland (Morschach 2008, organised by WSL, ETHZ und EPFL) , Austria (Innsbruck-Igls 2011, organized by the Geological Service of the Austrian Torrent and Avalanche Control), Italy (Lecco 2014, organized by the Politecnico di Milano, Università degli Studi di Milano-Bicocca and Ordine degli Ingegneri della Provincia di Lecco) and Spain (Barcelona 2017, rganized by the Rockfall Expert Network,the Universitat Politècnica de Catalunya and the Institut Cartogràfic i Geològic de Catalunya).


Event: 7th Interdisciplinary Workshop on Rockfall Protection (RocExs2020)
Date: 28-29 June 2022
Venue: Virtual (Infovaya)
Organizer: RocExs2020 Executive Committee
Co-Organizer: Japan Society of Civil Engineers, Japanese Geotechnical Society, International Association for Bridge and Structural Engineering, The Japan Landslide Society, Japan Society of Engineering Geology, The Mining and Materials Processing Institute of Japan, Hokkaido University, Muroran Institute of Technology


  • Rockfall source identification and characterization
  • Rockfall inventory and/or mapping
  • Rockfall runout dynamics and impact mechanics
  • New and emerging technologies in rockfall
  • Hazard and risk analyses
  • Rockfall modeling
  • Monitoring and alert systems
  • Mitigation and protective measures
  • Large rockfalls and rock avalanches
  • Case histories


Norimitsu Kishi, Muroran Institute of Technology, Japan
Masuhiro Beppu, National Defense Academy, Japan
Yoshiaki Fujii, Hokkaido University, Japan
Hiroshi Masuya, Kanazawa University, Japan
Organizing Committee
Kazunori Fujikake, National Defense Academy, Japan
Osamu Hatakeyama, CERI, PWRI, Japan
Kanako Hayashi, Hokkiado Regional Development Bureau, Japan
Takahiro Igarashi, Koken Engineering Co. Ltd., Japan
Hiroshi Kano, former Hokkaido Road Management Engrg. Center, Japan
Satoshi Kasai, former CERI, PWRI, Japan
Minoru Kawakita, former Docon Co. Ltd., Japan
Takumi Kawamura, Iwata Chizaki Inc., Japan
Tomoki Kawarai, Muroran Inst. of Technology, Japan
Ryoji Kawase, Koken Engineering Co. Ltd., Japan
Yasushi Kikuchi, Hokkiado Road Management Engrg. Center, Japan
Junichi Kodama, Hokkaido University, Japan
Nariaki Kodama, National Inst. of Tech., Hakodate College, Japan
Masato Komuro, Muroran Inst. of Technology, Japan
Hisashi Konno, former CERI, PWRI, Japan
Satoshi Kumakura, Docon Co. Ltd., Japan
Masaki Kuwajima, Hokuriku Regional Development Bureau, Japan
Osamu Matsuo, Tokyo Consultants Co. Ltd., Japan
Takashi Mikami, former Hokkaido University, Japan
Hiroaki Nishi, CERI, PWRI, Japan
Hiroaki Oura, HRS Co. Ltd., Japan
Akinori Shimata, CERI, PWRI, Japan
Yoshimi Sonoda, Kyushu University, Japan
Keiichi Tamura, Hokkiado Regional Development Bureau, Japan
Fumio Yamasawa, CERI, PWRI, Japan
Shintaro Yasunaka, CERI, PWRI, Japan
International Advisory Commiittee (Provisional)
Frédéric Berger,France
Frank Bourrier, France
Olivier Buzzi, Australia
Francesco Calvetti, Italy
Jordi Corominas, Spain
Giovanni B. Crosta, Italy
Michael Dietze, Germany
Luuk Dorren, Switzerland
John Duffy, USA
Erik Eberhardt, Canada
Anna Giacomini, Australia
Laura Govoni, Italy
Michel Jaboyedoff, Switzerland
Marc Janeras, Spain
Michael Krautblatter, Germany
Stéphan Lambert, France
Rosa María Mateos, Spain
Olga C. Mavroul, Netherlands
Sandra Melzner, Austria
Michael Mölk, Austria
José Moya, Spain
Daniele Peila, Italy
Alexander Preh, Austria
Kristian Schellenberg, Switzerland
Greg M. Stock, USA
Joan M. Vilaplana, Spain
Thomas Vogel, Switzerland
Axel Volkwein, Switzerland
Duncan Wyllie, Canada