Cut Slope Stability Analysis of Rangvamual Landslide Along Aizawl Airport Road, Northeast India

In the process of constructing roads for the development of the city, cut-slopes are made by excavating mountains. However, these cut-slopes are degraded in strength by time-deterioration phenomenon, and progressive slope failure is caused. This study developed an integrated analysis method for stability analysis and maintenance of cut-slopes in urban. The slope stability analysis was performed using the finite element model, and the progressive slope failure by time-dependent deterioration was quantified by using the strength parameters of soil applying the strength reduction factor (SRF). The displacements until the slope failure by slope stability analysis were quantified by cumulative displacement curve, velocity curve, and inverse velocity curve and, applied to the slope maintenance method. The inverse-velocity curve applied to the prediction of the time of slope failure was regressed to the 1st linear equation in the brittle material and the 3rd polynomial equation in the ductile material. This is consistent with the proposed formula of Fukuzono and also shows similar behavior to the failure case in literature. In the future, integrated analysis method should be improved through additional research. And it should be applied to cut-slope to prevent disasters.

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A New Slope Stability Analysis Method Based on FEM and Discussion on a Failure Mechanism of a Cut Slope.

Landslides ◽

10.3313/jls1964.38.2_129 ◽

2001 ◽

Vol 38 (2) ◽

pp. 129-135

Author(s):

Jie XIONG ◽

Akitoshi MOCHIZUKI ◽

Hirofumi YUMIOKA ◽

Tatsuo MIKI

Keyword(s):

Stability Analysis ◽

Slope Stability ◽

Failure Mechanism ◽

Slope Stability Analysis ◽

Cut Slope ◽

Analysis Method

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STUDY OF THE STABILITY CONDITIONS OF A HIGH CUT SLOPE ALONG EGNATIA HIGHWAY (ASPROVALTA - MACEDONIA)

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.16656 ◽

2004 ◽

Vol 36 (4) ◽

pp. 1833

Author(s):

Θ. Στιμάρατζης ◽

Β. Χρηστάρας ◽

Γ. Δημόπουλος ◽

A. Κίλιας ◽

M. Χατζηαγγέλου ◽

...

Keyword(s):

Stability Analysis ◽

Slope Stability ◽

Geographical Information Systems ◽

Soil Mechanics ◽

Slope Stability Analysis ◽

Geographical Information ◽

Stability Conditions ◽

Cut Slope ◽

Topographic Map ◽

The Stability

This study is about the stability conditions of a high cut slope as well as the possible measures of restoration, along the Egnatia Highway (deviation of Asprovalta). The study includes: the topographic map of the landslide and the 3-D view with the use of Geographical Information Systems, the analysis of geological and petrologie data from the samples of five core drillings, the soil mechanics laboratory tests, the determination of the causes and the landslide mechanisms and finally the slope stability analysis with «classic» methods such as Bishop, Janbu, Morgenstern-Price. A multiple repeated slope stability analysis took place in order to determinate the proper geometry (inclinations) of the slope with new benches. From the analysis of the data, the landslide restoration can be achieved with the combination of measures such as new benches geometry (proposed), surface drainage systems, retaining walls, soil nailing, geogrids and grass mat.

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