吉隆口岸美多当千泥石流基本特征及形成条件

Characteristics and Forming Conditions of the Meiduodangqian Debris Flow in Gyirong Port

受尼泊尔4.25地震的影响,西藏自治区吉隆口岸地区新增了大量的泥石流物源,成为该区严重的地质灾害隐患,。美多当千泥石流即为发育于该区的一条较为典型的泥石流。对美多当千泥石流的沟域平面特征、纵坡降特征进行研究,对其形成条件进行分析,发现该泥石流的发与当地地形地貌、物源条件和水源条件关系密切。这一研究成果对该地区泥石流防治具有一定的理论指导意义和实用价值。

Affected by the Nepal 4.25 earthquake, a large number of debris sources occur in the Jilong Port area, Tibet. Debris flow becomes one of the serious disasters in the area. The Meiduodangqian debris flow is a typical debris flow in the area. Based on the analyses of plane features and longitudinal slope characteristics of the debris flow, this paper makes an approach to forming conditions of the debris flow. The study shows that its activity is mainly affected by the topography, provenance condition and hydrogeological condition.