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Natural rock slopes , artificial slope deformation and failure often occur , if you can not accurately predict the slope stability , not only cause serious damage to property , and will result in serious personal injury or death. Datang International Shengli East II opencast coal mine stope open pit slope stability directly affect production , if there will be on open pit landslide caused huge losses , therefore , the paper pit slope stability were studied. Shengli East II opencast coal mine geological conditions: Quaternary sedimentary basins in the loose sand, gravel layer, and the Cretaceous lacustrine seam cracks and conglomerate , occurrence of groundwater . South slope stability in which the main controlled by faults , poor stability ; while the slope of soft rock lithology belong to their poor ability to resist damage , easily lead to destruction of the slope . Comprehensive comparison , the paper select continuous medium fast Lagrangian analysis (FLAC3D) numerical simulation analysis . Application of FLAC-3D built strength reduction quickly and effectively determine the effect of slope stability , recorded the largest unbalanced force slope and slope displacement vectors, etc. to illustrate the stability of the slope , Datang International Shengli East II surface coal mine slope basically stable, the safety factor of 1.43 , the practice test is reliable.
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