Numerical Modeling of Slope Stability Using Revegetation  Technique Combined with Geotextiles and Anchors

The earthquake that occured on September 28, 2018 in Palu city triggered liquefaction. Balaroa is one of the affected locations by liquefaction. The Balaroa area has several landslides including the road section which causes slopes to form. The purpose of this study is to identify the potential of landslides due to liquefaction on the Balaroa road section based on numerical modeling using the limit equalibrium method. This study was carried out on the Balaroa road section, which is geographically located in West Palu sub district, Palu City, Central of Sulawesi Province. The slope stability analysis models three locations that are prone to landslides using the limit equalibrium method assisted by Slide 7.0 program.The results show that the safety factor value of those three locations on the Balora road section using methods of Ordinary, Bishop and Janbu is FS<1, it indicates that the slope is in unsafe condition and prone to lanslides, therefore it needs to be taken into consideration by government

Download Full-text

Slope stability analysis with geo 5 software for “Łaski” Landslide in Międzybrodzie Bialskie

Contemporary Trends in Geoscience ◽

10.2478/ctg-2014-0005 ◽

2013 ◽

Vol 2 (1) ◽

pp. 34-40

Author(s):

Andrzej Michalski

Keyword(s):

Numerical Modeling ◽

Stability Analysis ◽

Numerical Model ◽

Slope Stability ◽

Water Level ◽

Slope Stability Analysis ◽

Sliding Surfaces ◽

The Third ◽

Normal Water ◽

Drill Cores

Abstract Abstract. Numerical modeling is an important tool to estimate slope stability. This publication shows application of a GEO 5 - slope stability software to evaluate stability of the “Łaski” Landslide in Międzybrodzie Bialskie. The slide surfaces, which were indentified in drill cores, were used to compute factors of safety (FS). The data from inclinometric measurements were used to verify the numerical model of the landslide. Calculations were carried out for three scenarios: first with normal water level, second scenario with lowered water level of 5 m and 10 m and the third scenario without water with the worst courses of sliding surfaces. As the result for each scenario the factors of safety were estimated. It was found that despite of water lowering and stabilization of existed surfaces, there is a considerable risk of a new sliding surfaces occurrence.

Download Full-text

Toe drain size and slope stability of homogeneous embankment dam under rapid drawdown.

Technobius ◽

10.54355/tbus/1.3.2021.0001 ◽

2021 ◽

Vol 1 (3) ◽

pp. 0001

Author(s):

Timoth Mkilima

Keyword(s):

Numerical Modeling ◽

Slope Stability ◽

Pore Water ◽

Factor Of Safety ◽

Potential Effect ◽

Upstream Face ◽

Design Team ◽

Potential Influence ◽

Embankment Dam ◽

Pore Water Pressures

The slope stability of an embankment dam has been always a serious concern of any design team. Unfortunately, the information on the potential influence of a toe drain size on the slope stability of an embankment dam under rapid drawdown conditions is still scarce. This study investigated the potential effect of a toe drain size on the slope stability of a homogeneous embankment dam under rapid drawdown conditions. Three different sizes (5m, 10m, and 15m) of the toe drain were investigated under instantaneous (worst scenario) and 5 days (more realistic) drawdown rates with the help of numerical modeling in GeoStudio. From the results, it was observed that the pore-water pressures at the upstream face of the embankment decreased with the increase in the toe drain size, while the pore-water pressures at the downstream toe were increasing with the increase in the toe drain size. The factor of safety values were also observed to be affected by the changes in the toe drain size.

Download Full-text