the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Laboratory experiments on rainfall-induced flowslide from pore pressure and moisture content measurements
Abstract. During or immediately after rainfall many slope failures have been observed. The slope failure occurred due to rainfall infiltration that rapidly increase the pore pressure and trigger the slope failure. Numerous studies have been conducted to investigate the rainfall-induced slope failure, but the mechanism of slope failure is still not well clarified. To investigate mechanism of rainfall-induced slope failure laboratory experiments have been conducted in flume. The slope was prepared with sandy soil in flume with constant inclination of 45°, because most of rainfall-induced slope failure occurred in sandy soil and on steep slope. The hydrological parameters such as pore pressure and moisture content were measured with piezometers and advanced Imko TDRs respectively. The slope failure occurred due to increase in moisture content and rise in pore pressure. During the flowslide type of slope failure the sudden increase in pore pressure was observed. The higher moisture content and pore pressure was at the toe of the slope. The pore pressure was higher at the toe of the slope and smaller at the upper part of the slope. After the saturation the run-off was observed at the toe of the slope that erodes the toe and forming the gullies from toe to upper part of the slope. In the case antecedent moisture conditions the moisture content and the pore pressure increased quickly and producing the surface runoff at the horizontal part of the slope. The slope having less density suffer from flowslide type of the failure, however in dense slope no major failure was occurred even at higher rainfall intensity. The antecedent moisture accompanied with high rainfall intensity also not favors the initiation of flowslide in case of dense slope. The flowslide type of failure can be avoided by controlling the density of soil slope. Knowing such parameters that controls the large mass movement helpful in developing the early warning system for flowslide type of failure.
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RC C128: 'Laboratory Experiments on Rainfall-induced Flowslide from Pore Pressure and Moisture Content Measurements', Anonymous Referee #1, 05 Mar 2015
- AC C145: 'Interactive comment on “Laboratory experiments on rainfall-induced flowslide from pore pressure and moisture content measurements” by M. R. Hakro and I. S. H. Harahap', Muhammad Rehan Hakro, 09 Mar 2015
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RC C636: 'Commnets to nhess-2015-30; Laboratory Experiments on Rainfall ...', Anonymous Referee #2, 07 May 2015
- AC C643: 'Interactive comment on “Laboratory experiments on rainfall-induced flowslide from pore pressure and moisture content measurements” by M. R. Hakro and I. S. H. Harahap', Muhammad Rehan Hakro, 08 May 2015
-
RC C128: 'Laboratory Experiments on Rainfall-induced Flowslide from Pore Pressure and Moisture Content Measurements', Anonymous Referee #1, 05 Mar 2015
- AC C145: 'Interactive comment on “Laboratory experiments on rainfall-induced flowslide from pore pressure and moisture content measurements” by M. R. Hakro and I. S. H. Harahap', Muhammad Rehan Hakro, 09 Mar 2015
-
RC C636: 'Commnets to nhess-2015-30; Laboratory Experiments on Rainfall ...', Anonymous Referee #2, 07 May 2015
- AC C643: 'Interactive comment on “Laboratory experiments on rainfall-induced flowslide from pore pressure and moisture content measurements” by M. R. Hakro and I. S. H. Harahap', Muhammad Rehan Hakro, 08 May 2015
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Cited
12 citations as recorded by crossref.
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- Progressive deformation and failure mechanism of loess fill slopes induce by rainfall: insights from flume model tests X. Lu et al. 10.1007/s10064-023-03413-y
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- Inducing factors and deformation mechanism of the Zhangjiacitang landslide in the Three Gorges Reservoir Area H. Chen et al. 10.1038/s41598-023-40186-6
- Numerical simulation of groundwater rising due to rainfall at far field in triggering landslide S. Alsubal et al. 10.21833/ijaas.2018.10.011
- Study of rainfall-induced landslide: a review A. Tohari 10.1088/1755-1315/118/1/012036