Landslides Causal Factors and Landslide Remediatial Options: Singapore

Publication Date : 2002-01-01
Author : Mihail E. Popescu
Countries :
Disaster Management Theme :
Disaster Type : Landslide
Document Type : Research Paper
Languange : en
Link :

Abstact :

Landslides and related slope instability phenomena plague many parts of the world. A wealth of experience has been accumulated in recent years in understanding, recognition and treatment of landslide hazards but our knowledge is still fragmentary. Particular area requiring attention concerns the selection and design of appropriate, cost-effective remedial measures, which in turn require a clear understanding of the conditions and processes that caused the landslide. Much progress has been made in developing techniques to minimize the impact of landslides, although new, more efficient, quicker and cheaper methods could well emerge in the future. Landslides may be corrected or controlled by one or any combination of four principle measures: modification of slope geometry, drainage, retaining structures and internal slope reinforcement. There are a number of levels of effectiveness and levels of acceptability that may be applied in the use of these measures, for while one slide may require an immediate and absolute long-term correction, another may only require minimal control for a short period. This report is intending to discuss some problems related to landslide causes and landslide remedial measures as resulted from the work of UNESCO WP/WLI Working Group on Causes of Landslides and IUGS WG/L Commission on Landslide Remediation in the framework of the United Nations International Decade for Natural Disaster Reduction (1990-2000). The example of the cliff instability phenomena on the Black Sea shore in Romania illustrating the relationship between causation and remediation in landslide works is presented and discussed.