We have carried out the investigation of landslide characteristics and geological environment about the typical Qingshan landslide in Laoshan area, and analyzed the topography, hydrogeology, engineering geology and other conditions related to the occurrence of the landslide. Through comprehensive analysis of various factors, the mechanism of Qingshan landslide was concluded: under the condition of human engineering activity and heavy rainfall, the original mechanical balance of the slope with poor stability was destroyed, leading to landslide occurrence. The stability evaluation of the disaster body showed that its stability was poor, the probability of disaster occurrence was big again, and the risk was great.
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Brunetti, M.T., Peruccacci, S. and Rossi, M. (2010) Rainfall Thresholds for the Possible Occurrence of Landslides in Italy. Natural Hazards and Earth System Sciences, 32, 447-458. http://dx.doi.org/10.5194/nhess-10-447-2010