证据权法在崩塌滑坡地质灾害易发性分区中的应用——以大埔县为例

Application of weights of evidence method in the susceptibility zoning of landslide and cliff collapse—A case study of Dabu County

文中应用证据权法进行大埔县崩塌滑坡地质灾害易发性分区评价,备选因子包含高程、坡度等10个因子,结果表明:坡度、前期降雨量等8个因子为最佳组合,拟合精度90.30%,预测精度89.90%.相应的易发性分区中,98.37%的灾害点位于中、高易发区内,表明方法在本区的崩塌滑坡易发性分区的可行性.

In this paper,the susceptibility of landslide and cliff collapse was evaluated by using the weight of evidence(W of E)method in Dabu County.A total of 10 alternative factors were included such as elevation,slope and so on.The results showed that eight factors including slope,3-day?antecedent precipitation and so on were the optimum combination of factors,止e fitting degree was 90.30%,and the prediction accuracy was 89.90%.98.37%of the landslides and cliff collapses were located in the middle and high susceptibility zones in the formation of susceptibility zoning,which showed that this method was feasible in the practice of landslide and cliff collapse susceptibility zoning in Dabu County.