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Assessing slope stability in unplanned settlements in developing countries.

Malcolm G Anderson1, Liz Holcombe, Jean-Philippe Renaud

  • 1School of Geographical Sciences, University of Bristol, University Road, Bristol BS8 1SS, UK. m.g.anderson@bris.ac.uk

Journal of Environmental Management
|November 17, 2006
PubMed
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This study presents a model to assess landslide risk on steep, unplanned housing slopes. The model integrates various factors to guide slope drainage and stability controls in developing countries.

Area of Science:

  • * Geotechnical Engineering
  • * Environmental Science
  • * Urban Planning

Background:

  • * Unplanned housing in developing nations frequently occurs on steep slopes lacking building codes and proper drainage.
  • * Inadequate drainage significantly increases landslide risk, especially on vulnerable topography.

Purpose of the Study:

  • * To develop a holistic model for assessing slope stability in unplanned housing areas.
  • * To incorporate diverse factors influencing slope stability for effective risk management.

Main Methods:

  • * Development of a comprehensive slope stability assessment model.
  • * Application of the model to a case study in St. Lucia, West Indies.
  • * Scenario testing of various influencing factors on slope stability.

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Main Results:

  • * Model findings align with observed slope movement and failure mechanisms.
  • * The study highlights the critical role of slope drainage in mitigating landslide risk.
  • * Resistance envelope methods corroborate the model's inferences.

Conclusions:

  • * The developed model is valuable for assessing dominant slope stability processes in complex environments.
  • * Scenario testing capabilities provide crucial insights for advising on slope management.
  • * The model aids in understanding and controlling landslide risks associated with unplanned housing on steep slopes.