Abstract

Landslide risk assessment and disaster management are challenging problems in nowadays along with the progress of societal development towards mountainous area. Through a Japan-China joint research project for the landslide hazard assessment in the ancient imperial resort palace of Lishan, Xian, China, detailed investigation has been performed on the Lishan slope to assess its landslide risk, and then offer suitable preparedness method. It was clarified that the Lishan slope is deforming, showing the characteristics of precursor landslide movement. A short-span and two lines of thirteen long-span extensometers installed over high trees proved the effectiveness of the monitoring method. They gave an evidential deforming data showing the landslide risk which made the decision by the Chinese national and municipal governments to install landslide prevention measures. The development of semi real-time monitoring system enables us to give warning of landslide disaster in advance.

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