陕西省山洪灾害防治区划

Features on Torrential Floods and Its Precaution in Shaanxi Province

分析了陕西省山洪灾害在地域上,具有相对集中性,成片成带分布,在时域上具有多期性和同期群发性。根据山洪灾害的分布位置与强度以及承灾体的特征,按重点防治区、次重点防治区和一般防治区三级进行山洪灾害的防治区划。

The definition of the torrential floods and analysis on forming condition and influential factors of torrential floods hazards for the Shaanxi Province were made.From the temporal aspect of view,the torrential flood is of multiple terms and multiple occurring in the same term.It coincides with mud flows and land slides.Most torrential floods occur during July to September and a few during April to June.From the spatial aspect of view,it is characterized by concentration, controlling by rainstorm centers and topography.Finally,the authors present the high-potential occurring zones of the torrential floods and its precautions.