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Design Strength Parameters of a Slope on Unsaturated Gneissic Residual Soil

Coutinho, Roberto Q. / Neto, João B. Souza / Costa, Flávio Q.

This paper presents basic engineering properties of a gneissic residual soil from a natural slope in which a greater landslide occurred. Emphasis is given to the design strength parameters obtained from laboratory tests. A stability analysis is done taking into consideration unsaturated condition. The landslide causal factors are also presented and discussed. The study results have shown that considering a low value of initial soil matric suction in the field the strength parameters mobilized in the first time failure are characterized by the laboratory results (peak or deformation near to the critical state condition).

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Design Strength Parameters of a Slope on Unsaturated Gneissic Residual Soil

Coutinho, Roberto Q. / Neto, João B. Souza / Costa, Flávio Q.

This paper presents basic engineering properties of a gneissic residual soil from a natural slope in which a greater landslide occurred. Emphasis is given to the design strength parameters obtained from laboratory tests. A stability analysis is done taking into consideration unsaturated condition. The landslide causal factors are also presented and discussed. The study results have shown that considering a low value of initial soil matric suction in the field the strength parameters mobilized in the first time failure are characterized by the laboratory results (peak or deformation near to the critical state condition).

Design Strength Parameters of a Slope on Unsaturated Gneissic Residual Soil

Coutinho, Roberto Q. / Neto, João B. Souza / Costa, Flávio Q.

This paper presents basic engineering properties of a gneissic residual soil from a natural slope in which a greater landslide occurred. Emphasis is given to the design strength parameters obtained from laboratory tests. A stability analysis is done taking into consideration unsaturated condition. The landslide causal factors are also presented and discussed. The study results have shown that considering a low value of initial soil matric suction in the field the strength parameters mobilized in the first time failure are characterized by the laboratory results (peak or deformation near to the critical state condition).

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Title:

Design Strength Parameters of a Slope on Unsaturated Gneissic Residual Soil

Contributors:

Coutinho, Roberto Q. (author) / Neto, João B. Souza (author) / Costa, Flávio Q. (author)

Conference:

Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States

Published in:

Advances in Unsaturated Geotechnics ; 247-261

Publication date:

2000-07-24

ISBN:

DOI:

https://doi.org/10.1061/40510(287)17

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Stress strain relations , Hydraulic conductivity , Residual soils , Slope stability , Unsaturated soils , Failure investigations , Shear strength , Design , Soil water , Strength

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