小岭沟泥石流形成条件及运动特征研究

Formation conditions and movement characteristics of debris flow in Xiaolinggou

小岭沟地处河北燕山南麓,沟谷纵坡降比较大,降水充沛时间分配集中。2012年夏季的强降雨将沟谷内的干砌石坝冲毁,沟谷水流夹杂泥沙沿沟谷流出,对沟口村民生命财产安全造成威胁,产生了不良社会影响。为保障周边人民群众生命财产安全,通过资料收集及实地调查,分析小岭沟泥石流形成基本条件和运动特征,并提出防治措施及建议,为其它具有相似成灾背景的泥石流形成条件及运动特征提供参考依据。

Xiaolinggou is located at the south foot of Yanshan Mountain in Hebei Province. The longitudinal gradient of the valley is relatively large,and the distribution of rainfall time is concentrated. In the summer of 2012 there was a heavy rainfall washed away the dry masonry dam in the valley,and the water and sediment in the valley flowed out along the Valley,posing a threat to the life and property safety of the villagers at the gully mouth,resulting in adverse social impact. In order to ensure the safety of people’s life and property,this paper analyzes the basic conditions and movement characteristics of Xiaolinggou debris flow through data collection and field investigation,and puts forward prevention measures and suggestions for it,so as to provide reference for other debris flow formation conditions and movement characteristics with similar disaster background.