At the beginning of the year 2008, Guangxi Province suffered the extreme weather once a 50-year and characterized by the low temperature, rain and snow as well as freezing. A large number of geological disasters took place during the extreme weather and the snow melting, which have resulted in heavy losses of life and property.On the basis of field geological investigation, the type, distribution characteristics and formation mechanism of geological disasters occurring during the extreme weather and the snow melting in Guangxi Province were analyzed. The main results of this research can be summarized as follows: ( 1 ) The types of geological disasters are mainly rockfalls, followed by the landslides, ground collapses and ground fissures. (2)The scales of geological disasters are mainly small. Different types of geological disasters present obvious regional difference. Not only some potential hazards but also a lot of new disasters are activated by the extreme weather. (3) The spatiotemporal distribution of the extreme weather and geological disasters are similar. (4)The geological hazards are caused by the additive effect of the fragile geological environment and extreme weather, among which the extreme weather is the main factor.
extreme weather with low temperatwre, rain,snow and freezinggeological disasterstypespatiotemporal distributionformation mechanism
NETL
NSTL
万方数据
维普
