Abstract：The Maoping landslide is located on the right bank of the Qingjiang River，Geheyan Reservoir Area in Hubei Province of China. It is an ancient landslide with a volume of 2.35×107 m3. After Geheyan Reservoir impoundment in April 1993，the Maoping landslide becomes the most dangerous landslide in Geheyan Reservoir with a maximum displacement of 2 100 mm until now. According to the development history and geological environment of the Qingjiang River valley and bank，the upper time limit of the Maoping landslide occurrence is estimated at Epipleistocene by valley evolution analysis. The component and structure characters of sliding surface and sliding mass are studied. By using the engineering geomechanics analysis method，the origin and cause of sliding surface and sliding mass are studied. The sliding surface comes from primary stratum of D3h and generates after weathering. The sliding mass comes from rock falling mass of slope back side. The process of the Maoping landslide formation and evolution is discussed. On the basis of above analysis，the generation and evolution of the Maoping land slide are deduced. The activity of the Maoping landslide has intimate relation with the rock falling of slope back side through landslide evolution process analysis. Moreover，the displacement monitoring shows that the intensive rainfall has important contribution to landslide. Therefore，attention to intensive rainfall and rock fall monitoring is advised.
