摘要
介绍了北京山区的泥石流灾害易发区的地质地貌特征、降水气候、泥石流类型及其空间分布特点。重点分析 195 0年以来 ,北京山区发生的 11次严重泥石流灾害的降水特征 ,包括灾害发生前 10 d的降水过程、日降水量达2 0 0 mm的地区与泥石流发生区、降水强度及泥石流爆发时间的关系等。并指出迎风坡或喇叭口地形 ,常是降水明显增幅。
The characteristics of geology and rainfall climate for the mud rock flow disaster region in Beijing mountain area,the type and space distribution of mud rock flow is introduced. It’s stressed analysis that the rainfall characteristics for 11 severe mud rock flow disasters, including rainfall intensity before 10 days of bursting disaster,the relationship of the rainfall region of surpassing 200 mm/d and the mud rock flow region,the rainfall intensity and the bursting time of the mud rock flow. It’s shown that the windward of mountain or the loudspeaker geography is the region of the rainfall increase obviously and the region bursting mud rock flow easily.
出处
《水土保持研究》
CSCD
2001年第1期67-72,共6页
Research of Soil and Water Conservation
