Deformation analysis of the Jiaojia landslide at Heifang platform based on DEM

Taking the Jiaojia landslide in Yongjing,Gansu Province as the study object,a landslide deformation analysis model is established by ArcGIS using four periods of topographic maps obtained in 1977,1997,2001,and 2010.Then a technical method of landslide deformation analysis is explored based on grid DEM.The calculation results show that retrograde eroding velocity of the landslide scarps is 4.42 m/a between 1977 and 1997,5.81 m/a between 1997 and 2001,and 1.64 m/a between 2001 and 2010. 更多还原