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New Techniques for Monitoring and Analyzing the Stability of Steep Cliffs against Rock Falls

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Title: New Techniques for Monitoring and Analyzing the Stability of Steep Cliffs against Rock Falls
Authors: Fujii, Yoshiaki Browse this author →KAKEN DB
Maeda, S. Browse this author
Sugawara, T. Browse this author
Kodama, N. Browse this author
Miyashita, N. Browse this author
Keywords: Steep cliff
Rock fall
Thermoelastic deformation
Root intrusion
Issue Date: 28-Jun-2016
Publisher: American Rock Mechanics Association
Journal Title: Proceedings of US Rock Mechanics/Geomechanics Symposium 2016 (ARMA 2016)
Volume: 2016
Start Page: ARMA 16-0027
Abstract: Mechanisms of joint opening leading to the formation of unstable rock blocks, such as thermal deformation, water-mineral reaction, pore pressure, freeze-thaw cycle, intrusion of wood roots etc. have been more or less clarified; however, the triggering mechanisms of rock falls remain to be elucidated. The problems which prevent the understanding of the mechanisms are (1) difficulty in installation of sensors to very unstable rock blocks, (2) thermoelastic deformation of sensors and attachments, (3) thermoelastic deformation of rock mass and (4) countermeasures to rock falls. Installation of a tiltmeter on the top of a very unstable rock block, correction of thermoelastic deformation of either sensors and attachments or rock mass, and long-term monitoring at a rock cliff along an abandoned road are shown as solutions to the problems. The solutions may not appear to be particularly novel, sophisticated or attractive, but the authors are convinced that they will contribute to breakthroughs in solving the listed problems. The techniques are inexpensive and worth trying.
Conference Name: US Rock Mechanics/Geomechanics Symposium
Conference Sequence: 50
Conference Place: Houston, Texas
Rights: Copyright 2016 ARMA, American Rock Mechanics Association This paper was prepared for presentation at the 50th US Rock Mechanics / Geomechanics Symposium held in Houston, Texas, USA, 26-29 June 2016.
Type: proceedings (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤井 義明

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