Abstract: Main characteristics of slope and landslide geologic disasters of open-pit coal mine were analyzed, and main landslide mode of slope of open-pit coal mine was confirmed.Through practical data, slope model was established.The influences of slope angle, strata inclination, groundwater, weak intercalation to stability of slope were analyzed.Situation of groundwater and structural plane should be considered in time and adopt reasonable measures to prevent the happen of slope geologic disasters during mining of open-pit coal mine.

Key words: Open-pit coal mine, Slope landslide, Influence factors