Study on deformation characteristics of an open-pit mine slope under freeze-thaw conditions
The slope of open-pit mine in northwest China is in freeze-thawing cycle conditions for a long time under the influence of alpine weather,and the slope stability is destroyed.In order to analyze the slope deforma-tion characteristics of an open-pit mine under freeze-thaw conditions,combined with the existing synthetic aperture slope radar monitoring technology of the mine,the continuous and uninterrupted monitoring of the west slope of the mine is carried out.The results show that from January to March,the radar data of the slope show that the cumula-tive negative deformation of the slope is in an accelerating upward trend.According to the on-site inspection,the cracks are mainly concentrated on the slope slope,and the steps and slopes have subsidence phenomenon.At this time,the mining area is in the thawing period,and the freeze-thaw site is easy to cause further expansion of cracks,and it is easy to form a potential slip surface,increasing the risk of landslide accidents.The real-time monitoring data of slope radar can provide scientific support for the mine to understand the slope state,and provide basic basis and engineering guidance for the mine safety production and slope treatment.
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