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延安市富县地质灾害特征是数量多,密度大,规模以中小型为主;滑坡平面形态典型,剪出口高,基本力学模式简单;崩塌规模小,危害大,变形破坏模式多样;不稳定斜坡坡度跨度大,坡形以直线型为主,监测难度大,潜在危害严重;诱发因素清楚,宏观前兆相对明显,可预防性较强。相对集中成片分布于富县城区周围和条带状分布分布于洛河、葫芦河及牛武川沿线;时间上年内在雨季较集中。
The geological disasters in Fuxian County of Yan’an City are characterized by large quantity, large density and small- and medium-scale scale. The landslide plane is typical in shape and high in shear. The basic mechanical model is simple. The scale of the collapse is small and the damage is great. The deformation and failure modes are diverse. The slope span is large and the slope shape is linear. The monitoring is difficult and the potential hazards are serious. The evoked factors are clear, the macroscopic precursor is relatively obvious, and the prophylactic is strong. Relatively concentrated into pieces distributed around the town of Fuxian and strip distribution located in Luohe, Huluhe and Niuwuchuan along the time during the previous year more concentrated in the rainy season.