Study on stability and deformation characteristics of open-pit slope under freeze-thaw environment
In order to analyze the influence mechanism of open-pit mine slope stability under freeze-thaw environment,an open-pit mine in Inner Mongolia was selected as the research area,and the radar monitoring technology of synthetic aperture slope was adopted to conduct continuous and continuous monitoring of the mine slope,and the deformation rule of open-pit mine slope under the influence of permafrost melting and seepage was studied.The results show that the soil surface of the slope is frozen and expanded during the freezing period and seepage,and the deformation increases.The long-term freezing state makes the internal stress distribution of the slope gradually stable,thus slowing down the deformation rate.During the thawing process,the soil mass of the slope shrinks and deforms,which intensifies the damage of the weak layer of the slope and reduces the overall stability of the slope.Therefore,the study of slope deformation mechanism under freeze-thaw and seepage condi-tions can provide the basis and engineering guidance for the long-term stability evaluation of open-pit slope,and provide a certain reference for the safety monitoring of open-pit slope.
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