典型冰碛补给型泥石流物源补给过程与机制研究——以泸定县干沟为例  

Source Supply Process and Mechanisms of Moraine-supplied Debris Flow——Take Gangou Valley in Luding County as an Example

作　　者：铁永波[1,2] 徐如阁[1] 巴仁基[1] 

机构地区：[1]成都地质矿产研究所,四川成都610081 [2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059

出　　处：《水土保持通报》2013年第1期77-80,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"冻融条件下冰碛补给型泥石流物源汇集机制研究"(41101086);地质灾害防治国家重点实验室开放基金"高寒山区泥石流历史活动频率重建研究"(SKLGP2012K003);中国地质调查局"西南山区典型低频泥石流启动机理与识别方法研究"(12120113010200)

摘　　要：干沟位于四川省泸定县境内,是一条典型的冰碛补给型泥石流沟,其物源补给具有复合过程的特点。在野外调查的基础上,以2005年干沟泥石流为例,对该次泥石流过程的物源补给特征及过程进行了调查和分析。结果表明,干沟泥石流的物源补给过程可分为"启动型物源"和"维持型物源"2种类型,对这2种类型的物源补给方式和过程进行了阐述,可为认识冰碛补给型泥石流的形成机理、物源补给过程及防灾减灾提供科学依据。Gangou valley in Luding County, Sichuan Province, is a typical valley of moraine-supplied debris flow. Source supply is complex in debris flow processes. Based on a field survey, the characters of its source supply process are analyzed by taking the debris flow occurred in 2005 as an example. Finally, source supply is classified as the two types of initiating source and maintaining source and each type of the source supply is interpreted. The research is helpful for us to understand the mechanisms, source supply process and hazard mitigation of moraine-supplied debris flow.

关 键 词：泥石流 冰碛补给 启动型物源 维持型物源 泸定县 

分 类 号：S157.2[农业科学—土壤学] P642.33[农业科学—农业基础科学]