Laboratory rainfall-induced slope failure with moisture content measurement

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The development of a physically based warning system for rainfall-induced slope failures requires a comprehensive understanding of the failure process. A set of laboratory-scale soil slopes was subjected to instability, through three different modes of raising water level, to clarify the process of failure initiation. Hydrologic responses of the model slopes to the saturation process were recorded by volumetric soil moisture content sensors. The results of model tests show that failures of the model slopes were essentially initiated by the development of an unstable area near the slope toe, upon the formation of the seepage area, with shallow noncircular sliding being the dominant failure mode. The volumetric moisture content of the slope region where localized failures initiated was noted to reach a nearly saturated value. However, the major portion of soil slopes involved in overall instability was still in an unsaturated condition. Based on the observed moisture content response of the model slopes, a concept for prediction methodology of rainfall-induced slope failures is introduced.

Original languageEnglish
Pages (from-to)575-587
Number of pages13
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume133
Issue number5
DOIs
Publication statusPublished - May 2007

Fingerprint

slope failure
Rain
moisture content
Moisture
rainfall
Soils
Alarm systems
Soil moisture
Seepage
Water levels
Failure modes
warning system
laboratory
Sensors
model test
sliding
seepage
water level
soil
soil moisture

Keywords

  • Laboratory tests
  • Landslides
  • Moisture content
  • Predictions

ASJC Scopus subject areas

  • Environmental Science(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

Laboratory rainfall-induced slope failure with moisture content measurement. / Tohari, Adrin; Nishigaki, Makoto; Komatsu, Mitsuru.

In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 5, 05.2007, p. 575-587.

Research output: Contribution to journalArticle

@article{b60fcba2d49640dca4d54290356d9e3a,
title = "Laboratory rainfall-induced slope failure with moisture content measurement",
abstract = "The development of a physically based warning system for rainfall-induced slope failures requires a comprehensive understanding of the failure process. A set of laboratory-scale soil slopes was subjected to instability, through three different modes of raising water level, to clarify the process of failure initiation. Hydrologic responses of the model slopes to the saturation process were recorded by volumetric soil moisture content sensors. The results of model tests show that failures of the model slopes were essentially initiated by the development of an unstable area near the slope toe, upon the formation of the seepage area, with shallow noncircular sliding being the dominant failure mode. The volumetric moisture content of the slope region where localized failures initiated was noted to reach a nearly saturated value. However, the major portion of soil slopes involved in overall instability was still in an unsaturated condition. Based on the observed moisture content response of the model slopes, a concept for prediction methodology of rainfall-induced slope failures is introduced.",
keywords = "Laboratory tests, Landslides, Moisture content, Predictions",
author = "Adrin Tohari and Makoto Nishigaki and Mitsuru Komatsu",
year = "2007",
month = "5",
doi = "10.1061/(ASCE)1090-0241(2007)133:5(575)",
language = "English",
volume = "133",
pages = "575--587",
journal = "Journal of Geotechnical and Geoenvironmental Engineering - ASCE",
issn = "1090-0241",
publisher = "ASCE",
number = "5",

}

TY - JOUR

T1 - Laboratory rainfall-induced slope failure with moisture content measurement

AU - Tohari, Adrin

AU - Nishigaki, Makoto

AU - Komatsu, Mitsuru

PY - 2007/5

Y1 - 2007/5

N2 - The development of a physically based warning system for rainfall-induced slope failures requires a comprehensive understanding of the failure process. A set of laboratory-scale soil slopes was subjected to instability, through three different modes of raising water level, to clarify the process of failure initiation. Hydrologic responses of the model slopes to the saturation process were recorded by volumetric soil moisture content sensors. The results of model tests show that failures of the model slopes were essentially initiated by the development of an unstable area near the slope toe, upon the formation of the seepage area, with shallow noncircular sliding being the dominant failure mode. The volumetric moisture content of the slope region where localized failures initiated was noted to reach a nearly saturated value. However, the major portion of soil slopes involved in overall instability was still in an unsaturated condition. Based on the observed moisture content response of the model slopes, a concept for prediction methodology of rainfall-induced slope failures is introduced.

AB - The development of a physically based warning system for rainfall-induced slope failures requires a comprehensive understanding of the failure process. A set of laboratory-scale soil slopes was subjected to instability, through three different modes of raising water level, to clarify the process of failure initiation. Hydrologic responses of the model slopes to the saturation process were recorded by volumetric soil moisture content sensors. The results of model tests show that failures of the model slopes were essentially initiated by the development of an unstable area near the slope toe, upon the formation of the seepage area, with shallow noncircular sliding being the dominant failure mode. The volumetric moisture content of the slope region where localized failures initiated was noted to reach a nearly saturated value. However, the major portion of soil slopes involved in overall instability was still in an unsaturated condition. Based on the observed moisture content response of the model slopes, a concept for prediction methodology of rainfall-induced slope failures is introduced.

KW - Laboratory tests

KW - Landslides

KW - Moisture content

KW - Predictions

UR - http://www.scopus.com/inward/record.url?scp=34247257860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247257860&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)1090-0241(2007)133:5(575)

DO - 10.1061/(ASCE)1090-0241(2007)133:5(575)

M3 - Article

AN - SCOPUS:34247257860

VL - 133

SP - 575

EP - 587

JO - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

JF - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

SN - 1090-0241

IS - 5

ER -