Mechanisms of Shallow Rainfall-Induced Landslides from Australia: Insights into Field and Laboratory Investigations
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Ravindran, Sinnappoo
Kim, Dong Hyun
Cui, Chen
Tang, Qianhao
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Sassa, K
Tiwari, Binod
Sassa, Shinji
Konagai, Kazuo
Arbanas, Zeljko
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This paper presents and discusses the mechanisms of rainfall-induced shallow landslides that commonly occur in South East Queensland (SEQ) and northern New South Wales (NSW), Australia. The major factors causing the formation of landslide mass such as geology, weathering, and rainfall patterns were discussed. Results from field surveys and laboratory testing of rock/soil material from landslide masses were presented, and relationships between the material strength and landslide occurrence were drawn. It was found that most of shallow slides were related to sandstone deposits. Those failures occurred on natural slopes and road cuts with the inclination of the failure plane being in the range of 35–45°. For natural slopes where the landslide mass mostly consisted of coarse-grained soil, the relationship between the soil strength and water content was established. In addition, the relationship between rainfall patterns such as intensity and duration, and the landslide occurrence was presented. Based on the data from field work and laboratory results including a series of flume tests, the mechanism of shallow landslides triggered by rainfall events was identified and discussed.
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Progress in Landslide Research and Technology, Volume 1 Issue 1, 2022
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1
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© The Author(s) 2023. This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creative commons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
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Geomorphology and earth surface processes
Geology
Hydrology
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Gratchev, I; Ravindran, S; Kim, DH; Cui, C; Tang, Q, Mechanisms of Shallow Rainfall-Induced Landslides from Australia: Insights into Field and Laboratory Investigations, Progress in Landslide Research and Technology, Volume 1 Issue 1, 2022, 2023, 1, pp. 113-122