摘要
对独库公路冰川泥石流的考察及重点泥石流沟的观测，摸清了９条泥石流沟的分布，泥石流发生概况、危害和形成的水文气象条件。以实测资料分析了公路沿线冰川泥石流运动规律基本特征和形成机制。参与泥石流形成的主要水源为融雪水、冰崩和冰川融水，其次是暴雨和冰川融水的叠加所形成的洪水，实测最大容重为２．４６ｇ／ｃｍ￣３。
Research results show that the glacier debris flow along the Dushanzi-Korla Highway is insmall scale and has full process of development.The debris flow occurs during June-July everysummer and often destories bridges and blocks the highway.The major water source joining upwith the formation of debris fiow,first of all, is snow meltwater and ice meltwater from theicefalls during the warm summer,and secondly,the flood of storm rain and meltwater. From themass conditions for forming debris flow in 9 gullies , the mass in the middle and lower reaches iseasier to develop into debris flow than that in the upper reaches.The collapse of rock banks alongthe gully following the debris flow is both main mean that moraine mass develop into debris flowand supplementary pattern of solid mass,Viscous flow by gravity is major debris flow along thehighway;the main way and features of debris flow movement are in viscous and intermittentflow. Observed maximum density of the debris flow is 24.6g /cm￣2 which is the maximum figureamong all measured data. The glacier debris flow along the highway can be classified into 4types.
出处
《山地研究》
CSCD
1995年第3期147-152,共6页
基金
国家自然科学基金
关键词
独库公路
冰川
泥石流
形成条件
基本特征
分布
Dushanzi-Korla Highway,glacier debris flow , forming condition, basic characterisitics
