P5.Landslide Hazard Map and Risk Management in Switzerland

概要

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6% of Switzerland is prone to slope instability. New federal regulations require regional authorities (cantons) to generate natural hazard maps and the zoning of mass movements in order to restrict development on hazard-prone land. The purpose of these new laws is the protection of the environment, in particular human life and high value property, from natural hazards with a minimum of structural countermeasures. Therefore, of particular importance are non-structural preventive measures. In second priority, and only in specific cases where they can be cost-effective, like for debris flow channels crossing inhabited zones, the recommended prevention actions may include protection measures. This need is mainly due to the intense development of tourist infrastructure in some exposed zones, causing an unacceptable risk level. An overview of the present state of landslide hazard mapping in the 26 cantons and the meaning of landslide hazard maps for land use planning are presented.
一般社団法人日本応用地質学会の論文
2006-11-09