Abstract
Green technology, an integrated design approach that combines vegetation and engineering design methods, can be applied to improve slope stability and to control erosion. In this study, vetiver grass is used to improved slope stability. Vetiver grass has been widely cultivated in many tropical and subtropical regions of the world for soil and water conservation, land rehabilitation and embankment stabilization. Vetiver grass has deep roots, i.e. 2 to 4 m in depth, and it adapts well under extreme conditions of temperature, soil moisture, soil acidity and alkalinity. The role of vetiver grass in minimizing rain water infiltration and controlling erosion for improving stability of slope was investigated on a soil slope in Singapore under the tropical climate. The soil slope, covered with vetiver grass, was instrumented with tensiometers installed at different depths within the slope and a rainfall gauge. The instruments were connected to a real-time monitoring system to study pore-water pressure, rainfall and groundwater level in the slope throughout a one-year period. The pore-water pressure characteristics within the slope covered with vetiver grass were analyzed and presented. The analyses indicated that the vetiver grass plays a significant role in reducing rainwater infiltration into the slope, minimizing the loss of shear strength of the soil and as a result maintaining stability of the slope.
| Original language | English |
|---|---|
| Title of host publication | Landslides and Engineered Slopes |
| Subtitle of host publication | Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012 |
| Editors | Erik Eberhardt, Corey Froese, A. Keith Turner, Serge Leroueil |
| Publisher | CRC Press/Balkema |
| Pages | 1587-1592 |
| Number of pages | 6 |
| ISBN (Print) | 9780415621236 |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012 - Banff, Canada Duration: Jun 2 2012 → Jun 8 2012 |
Publication series
| Name | Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012 |
|---|---|
| Volume | 2 |
Conference
| Conference | 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012 |
|---|---|
| Country/Territory | Canada |
| City | Banff |
| Period | 6/2/12 → 6/8/12 |
Bibliographical note
Publisher Copyright:© 2012 Taylor & Francis Group, London.
ASJC Scopus Subject Areas
- Earth-Surface Processes
- Geotechnical Engineering and Engineering Geology
