柿树沟7.24泥石流形成条件和特征分析

Analysis of the Formation Condition and Characteristics for the 7.24 Debris Flow in Shishu Gully

对柿树沟7.24泥石流灾害形成条件和特征进行了分析.结果表明:柿树沟地形条件有利,物源丰富,降雨充足,前期降雨量丰富和短历时高雨强是此次泥石流的诱发因素.柿树沟7.24泥石流为沟床起动型泥石流,搬运能力强,加之防灾意识不足使此次泥石流灾害增大,表现为冲毁房屋、耕地和损毁公路3种形式.

The formation Condition and characteristics of the 7.24 debris flow in Shishu gully were analyzed with a view to offering instructions. The results showed that the favorable topographic condition, the rich source and the sufficient rainfall comprised the formation condition of Shishu gully. The abundant prophase rainfall and short duration rainfall intensity were＇the inducing factors of the debris flow. The 7.24 debris flow is the type of gully bed starting which has a strong carrying capacity. Lack of consciousness of disaster prevention increased losses when the 7.24 debris flow occurred. The debris flow disasters include three main forms of destroying houses and farmland, and breaking down the road.