Earthquake-induced flow-type slope failures in volcanic sandy soils and tentative evaluation of the fluidization properties of soils

M. Kazama, T. Kawai, J. Kim, M. Takagi, T. Morita, T. Unno

研究成果: Conference contribution

抄録

Japan has many experiences of mudflow-type failures of volcanic sandy soil slopes during earthquakes. Firstly in this paper, several major cases of the flow-type failures are outlined. In general, undisturbed pyroclastic deposits have high strength against to fluidization because of its cementation effect. However, once the deposits are disturbed to use as an earth fill materials, the shear strength of disturbed soils cannot be expected. Rather, the disturbed pyroclastic soils are weaker than ordinary sandy soils. Therefore, it is necessary to evaluate the fluidization property of disturbed pyroclastic sandy soils for mitigating mudflow disaster. In this study, we introduce a drum type testing machine to evaluate the fluidization property. Two kinds of volcanic sandy soils are used as a specimen sampled from volcanic area in Japan. In addition to this, the wireless multi sensor which can be installed in the movable soils is introduced.

本文言語English
ホスト出版物のタイトルVolcanic Rocks and Soils - Proceedings of the International Workshop on Volcanic Rocks and Soils, 2016
編集者Tatiana Rotonda, Manuela Cecconi, Francesco Silvestri, Paolo Tommasi
出版社CRC Press/Balkema
ページ175-176
ページ数2
ISBN(印刷版)9781138028869
DOI
出版ステータスPublished - 2015
イベントInternational Workshop on Volcanic Rocks and Soils, 2015 - Lacco Ameno, Ischia Island, Italy
継続期間: 2016 9月 242016 9月 25

出版物シリーズ

名前Volcanic Rocks and Soils - Proceedings of the International Workshop on Volcanic Rocks and Soils, 2015

Other

OtherInternational Workshop on Volcanic Rocks and Soils, 2015
国/地域Italy
CityLacco Ameno, Ischia Island
Period16/9/2416/9/25

ASJC Scopus subject areas

  • 土壌科学

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