【摘要】 本文以中秦岭地区为滑坡易发性评价对象,针对研究区的情况,选取了坡度、起伏度、地貌类型、岩性、土壤侵蚀强度、活动断裂距、地震动参数、地下水类型、多年平均降雨量9个评价因子,建立了研究区滑坡易发性评价的数据库。运用单因子概率比率模型对各因子和滑坡的相关性进行了评价,揭示了该区滑坡灾害类型特点及空间分布规律,明确了中秦岭地区滑坡地质灾害的极高易发、高易发三大聚集地区的位置。更多还原

【Abstract】 As a case study,nine indicators are selected for landslide susceptibility evaluation in middle Qinling Mountain: slope,undulation,geomorphologic type,lithology,soil erosion rating,seismic intensity,seismic ground motion parameter,hydro-geological type,and average of annual rainfalls.A database for susceptibility evaluation is built.Model of uni-factor probability ratio is used to evaluate the relativity between the factors and landslides.Research results reveal the characteristics and spatial distribution of different kinds of landslide disasters.This distribution can be shown as a division map of susceptibility to landslide and give us new understanding about landslide susceptibility in this area.更多还原