Response parameters for characterization of infiltration

Rahardjo, Harianto; Ong, T. H.; Rezaur, R. B.; Leong, Eng Choon; Fredlund, D. G.

doi:10.1007/s12665-009-0273-4

Cited by 35 publications

(13 citation statements)

References 18 publications

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“…3) was also found by Tohari et al (2007) when tested non-cohesive soils derived from granite. According to Rahardjo et al (2010) suction is not necessarily lost after an event of heavy rain, although in this study the initial condition of the B horizon (S3 and S4) was close to saturation, however the rate of this stage did not change significantly in relation to rainfall as the saturation degree of soil horizon A (S2, S5, and S8 in Fig. 3).…”

Section: Discussioncontrasting

confidence: 49%

Laboratory rainfall-induced slope failure in a soil from the Colombian coffee region

et al. 2019

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There are few studies on the processes involved in landslides in the soils of the Colombian coffee region in relation to the soil water content. In order to contribute to this knowledge, several experiments over a terrain model under simulated rainfall were conducted. Seven experiments on laboratory slope models, 1.8 m 2 base, 1.0 m height, and 32° slope, with soil bulk density and soil horizons arrangement similar to in situ conditions, were built. Samples of altered residual soil derived from granitic rocks were collected in the municipality of Ibagué-Colombia from the surface down to 1.6 m depth. In each laboratory model, eight suction tensiometers (0 to −85 kPa) were located, and measurement under simulated rainfall was done. The results indicated a relationship of mass movements with hydrological processes occurring in the slope, related to soil permeability, rainfall intensity and duration, and water table changes. The major portion of soil slope instability cases was related to a saturated condition of the slope toe.

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Section: Discussioncontrasting

confidence: 49%

Laboratory rainfall-induced slope failure in a soil from the Colombian coffee region

et al. 2019

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“…Numerical modelling of the infiltration process, considering both unsaturated and saturated conditions, has proven to be the most effective tool to relate landslide to rainfall events (Trandafir et al 2008;Tsai et al 2008;Dahal et al 2009b;Rahardjo et al 2010). In this study the numerical modelling was performed using SEEP/W, which is a finite element numerical modelling code (GEO-SLOPE International Ltd.…”

Section: Numerical Modellingmentioning

confidence: 99%

Rainfall, infiltration, and groundwater flow in a terraced slope of Valtellina (Northern Italy): field data and modelling

2011

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The aim of this work was to understand and reproduce the hydrological dynamics of a slope that is terraced by dry retaining walls. This approach will help to assess the influence of temporary groundwater perched tables, which can form at the area of contact between the backfill of the wall and the bedrock, on the wall's stability. The study area is located in Valtellina (Northern Italy) near the village of Tresenda, which was affected by three debris flows that caused 18 casualties in 1983. In 2002, another event of the same type affected this area, but that event only caused the interruption of a major transport road. Direct observations of one of the three flows in 1983 and the reconstruction of 2002 indicated that the most probable triggering cause was the collapse of a dry retaining wall after its backfill was saturated. After field work was conducted to discover the principal hydrological and hydrogeological characteristics of the slope, numerical modelling was performed to determine under what conditions the soil will saturate, and therefore, when the collapse of a dry retaining wall might occur. First, a study of the interaction between pluviometric events and groundwater behaviour was conducted; then, modelling was performed using finite element analysis software that permits the calculation of groundwater flow both for completely and partially saturated conditions. The model was calibrated and validated using the hydrographs of the groundwater table recorded on site. It can be used as a predictive instrument for rainfall events of a given duration and return period.

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“…Using the instrumentations, parameters such as moisture content and pore water pressure can be obtained. Two samples were used in this experiment, where comparisons for both data were presented [11]. Two types of soil were used in the experiment; soil from UKM reserved forest area and commercially obtained kaolin.…”

Section: Introductionmentioning

confidence: 99%

Effect of rainfall infiltration into unsaturated soil using soil column

Ibrahim

Mukhlisin

Jaafar

2018

AIP Conference Proceedings

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Abstract. Rainfall especially in tropical region caused infiltration to the soil slope. The infiltration may change pore water pressure or matric suction of the soil. The event of rainfall infiltration into soil is a complex mechanism. Therefore, the main objectives of this research paper is to study the influence of rainfall intensity and duration that changed pore water pressure to soil. There are two types of soils used in this study; forest soil and kaolin. Soil column apparatus is used for experiments. Rainfall were applied to the soil and result for 3, 6, 12, 24, 72, 120 and 168 hours were retrieved. Result shows that for the both types of soil, the negative pore water pressures were increased during wetting process and gradually decreased towards drying process. The results also show that pore water pressure at top part was increased greatly as the wetting process started compared to the middle and bottom part of the column.

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Response parameters for characterization of infiltration

Cited by 35 publications

References 18 publications

Laboratory rainfall-induced slope failure in a soil from the Colombian coffee region

Laboratory rainfall-induced slope failure in a soil from the Colombian coffee region

Rainfall, infiltration, and groundwater flow in a terraced slope of Valtellina (Northern Italy): field data and modelling

Effect of rainfall infiltration into unsaturated soil using soil column

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