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Vesmír č. 10
Vesmír č. 10
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2. 10. 2017
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Svahové nestability a jejich dopady na krajinu a společnost

Slope instabilities and its influence on the landscape and society by Oldřich Krejčí, Vladimíra Krejčí, Petr Kycl and Jan Šikula.

Occurrence of numerous landslides and their reactivation following high total precipitation are known since long ago. During the last centuries hundreds of people died in huge landslides triggered by heavy rainfalls in the Czech Republic. Many casualties were caused mainly by absence of communication means and by lack of suitable rescue technology. Naturally, the best historically documented landslide calamities are known primarily from densely populated areas (Praha and vicinity, Western and Northern Bohemia). The slope movements belong to ones of the present modelling processes in our conditions, which transform the relief with the great intensity. The slope movements result in a whole spectrum of slope failures as depending on the type of the movement. The distinct elevation of the Labe canyon walls over the valley exceeding 600 m in combination with block disintegration of thick sandstone layers and occurrence of block-shaped unconsolidated sediments of volcanic origin are the main reasons for a high tendency to slope movements in the Bohemian Massif. Heavy rainfalls in July 1997 triggered slope movements recorded particularly in the flysch rocks of northern and eastern Czech Republic.