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Precaution and early warning of surface failure of slopes using tilt sensors
Uchimura, Taro1; Towhata, Ikuo1; Wang, Lin2; Nishie, Shunsaku2; Yamaguchi, Hiroshi2; Seko, Ichiro2; Qiao, Jianping3
Corresponding AuthorUchimura, Taro
AbstractA simple monitoring method for the early warning of rainfall-induced landslides is proposed. Tilting angles in the surface layer of the slope are mainly monitored in this method. In the first stage of this study with a scaled model slope, distinct behaviors were observed in the tilt angles monitored on the surface of the slope prior to failure. Hence, a set of equipment has been developed for practical use, which is equipped with a Micro Electro Mechanical Systems (MEMS) tilt sensor and a volumetric water content sensor. An optional arrangement of tilt sensors has also been developed in order to investigate the deformation of the deeper layers. These sets of equipment have been deployed at several slope sites in Japan and China, and their performances have been recorded. Slope failure tests were also conducted on a natural slope by applying artificial heavy rainfall. The developed system detected distinct behaviors in the tilting angles at these sites in the pre-failure stages. Considering the behaviors of tilting monitored on the surfaces of these slopes, it is proposed that a precaution be issued at a tilting rate of 0.01 degrees per hour and a warning be issued at a tilting rate of 0.1 degrees per hour, to be on the conservative side. (C) 2015 The Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved.
KeywordSlope Failure Monitoring Early Warning Tilt Angle Sensor Network
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000363433500014
Funding OrganizationJapan Society for the Promotion of Science (JSPS) ; Ministry of Land, Infrastructure, Transport and Tourism of Japan ; International Cooperate Project of the Chinese Ministry of Science and Technology(07 (2007DFA21150) ; 09(2009M-1320190))
Accession numberAccession number: 20154301436883
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Univ Tokyo, Dept Civil Engn, Bunkyo Ku, Tokyo 1138656, Japan
2.Chuo Kaihatsu Corp, Tokyo, Japan
3.Inst Mt Hazards & Environm, Chengdu, Peoples R China
Recommended Citation
GB/T 7714
Uchimura, Taro,Towhata, Ikuo,Wang, Lin,et al. Precaution and early warning of surface failure of slopes using tilt sensors[J]. SOILS AND FOUNDATIONS,2015,55(5):1086-1099.
APA Uchimura, Taro.,Towhata, Ikuo.,Wang, Lin.,Nishie, Shunsaku.,Yamaguchi, Hiroshi.,...&Qiao, Jianping.(2015).Precaution and early warning of surface failure of slopes using tilt sensors.SOILS AND FOUNDATIONS,55(5),1086-1099.
MLA Uchimura, Taro,et al."Precaution and early warning of surface failure of slopes using tilt sensors".SOILS AND FOUNDATIONS 55.5(2015):1086-1099.
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