Study on mechanism of retrogressive slope failure using artificial rainfall

Regmi, Ram Krishna; Jung, Kyomin; Nakagawa, Hajime; Kang, Jae-Won

doi:10.1016/j.catena.2014.06.001

Cited by 30 publications

(15 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the experiments of Tohari et al (2007) and Regmi et al (2014) elevated groundwater table caused the failure surface to form at the toe of a slope. In this study, we eliminated these influences and considered only a slope failure occurring due to rainfall seepage.…”

Section: Model Slope Experimentsmentioning

confidence: 99%

“…Laboratory experiments were conducted in order to understand the process of slope failure, and to monitor porewater pressure, soil suction, groundwater depth and slope deformation, and the failure surface within a slope (Fukuzono, 1987;Kitamura et al, 1999;Regmi et al, 2014;Sasahara, 2001;Tohari et al, 2007;Yagi and Yatabe, 1987;Yokota et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have been conducted to understand the failure mechanism of a slope, and to determine the point of initiation of failure. Until now, the process of slope failure is not clear (Regmi et al, 2014;Tohari et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Behavior analysis by model slope experiment of artificial rainfall

Park

2016

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. In this study, we performed a model slope experiment with rainfall seepage, and the results were compared and verified with the unsaturated slope stability analysis method. In the model slope experiment, we measured the changes in water content and matric suction due to rainfall seepage, and determined the time at which the slope failure occurred and the shape of the failure. In addition, we compared and verified the changes in the factor of safety and the shape of the failure surface, which was calculated from the unsaturated slope stability analysis with the model experiment. From the results of experiment and analysis, it is concluded that the unsaturated slope stability analysis can be used to accurately analyze and predict rainfall-induced slope failure. It is also concluded that in seepage analysis, setting the initial conditions and boundary conditions is very important. If engineers will use the measured porewater pressure or matric suction, the accuracy of analysis can be enhanced. The real-time monitoring system of porewater pressure or matric suction can be used as a warning of rainfall-induced slope failure.

show abstract

Section: Model Slope Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Behavior analysis by model slope experiment of artificial rainfall

Park

2016

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…In addition to the rainfall, other factors influencing the collapse include geological structures including faults, joints, folds, fractures, weathering state of the rock that make up the ground and composition of major minerals, earthquakes which are not in common in Korea, and a number of internal and external factors such as vibrations and landform changes caused by the construction work performed around the slope (Park, 2008;Regmi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In addition to rainfall, other factors influencing slope failure (or collapse) include geological structures such as faults, joints, folds, and fractures; the mineralogical composition and state of weathering of the host slopeforming rock; earthquakes (although these are uncommon in Korea); and various other internal and external factors such as vibrations and local changes in terrain caused by construction work performed on or near the slope (Park, 2008;Regmi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A Study on the Variation of Ground Safety Factor by Earthworks

Kim¹,

Kwon²,

Baek³

et al. 2014

The Journal of Engineering Geology

View full text Add to dashboard Cite

The construction of roads, tunnels, and bridges results in changes to the local terrain that may influence the ground safety factor, which represents the stability of geotechnical structures. In this study, we assessed construction sites that had collapsed as a result of terrain change, and then simulated variation in the ground safety factor with respect to terrain change caused by road construction. We assumed steep slopes to simulate changes in terrain in a mountainous area and assumed that earthworks took place for road construction by cutting a platform into the slope and altering the slope angle of the terrain both above and below the road. We calculated values of the ground safety factor through a stability analysis of the slope both above and below the road, and examined the variation in the safety factor of the above-and below-road slopes with respect to changes in road width. We found that if the slope angle was the same above and below the road, then the change in the ground safety factor during/after road construction occurred in the slope below the road, and if the slope angle above the road differed from that below, then the change occurred in both the above-and below-road slopes. Furthermore, the ground safety factor was essentially constant for road widths exceeding 2-6 m, depending on both above-and below-road slope angle. The findings of this study can be used to guide the management of construction sites and to assess changes in ground stability during road construction work, particularly in the early stages of earthworks, when the road width is narrow.

show abstract

Two-surface progressive failure mechanism and stability quantitative evaluation of water-induced weakening retrogressive landslides: case study for clay landslides, China

Sun

Shen

2022

Bull Eng Geol Environ

View full text Add to dashboard Cite

Study on mechanism of retrogressive slope failure using artificial rainfall

Cited by 30 publications

References 16 publications

Behavior analysis by model slope experiment of artificial rainfall

Behavior analysis by model slope experiment of artificial rainfall

A Study on the Variation of Ground Safety Factor by Earthworks

Two-surface progressive failure mechanism and stability quantitative evaluation of water-induced weakening retrogressive landslides: case study for clay landslides, China

Contact Info

Product

Resources

About