基于结构两相阻力分析的泥石流堆积形态研究  

ANALYSIS OF CONCEPTUAL TWO-PHASE RESISTANCE FOR ACCUMULATION STATE OF DEBRIS FLOWS

作　　者：樊赟赟[1] 王思敬[1,2] 王恩志[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室,北京100086 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《工程地质学报》2010年第1期100-104,共5页Journal of Engineering Geology

基　　金：国家自然科学基金项目(No.40872152);"十一五"国家科技支撑计划重点项目(2006BAK30B02);水沙科学国家重点实验室自筹项目:地震诱发堰塞湖的形成机理与溃决风险调控理论

摘　　要：针对泥石流的结构两相阻力特征,采用结构两相阻力对泥石流的堆积形态进行了静力学分析,推导出在一般条件下泥石流堆积形态的公式,并讨论了在不同条件下泥石流堆积形态的特点。分析表明采用结构两相阻力对泥石流堆积形态分析可以较合理的模化阻力项,能够表现泥石流体复杂的成分结构组成,较真实的反映实际泥石流的堆积形态特征。在特定材料条件下,结构两相阻力项转化为单一材料阻力项,所得到的相应结论与已有对单一材料的分析结论一致。This paper aims at the characteristics of conceptual two-phase resistance of debris flow.It uses the conceptual two-phase resistance for a static analysis on accumulation state of debris flow.As a result,a formula for accumulation state of debris flow in general condition is presented.Furthermore,the characteristics of accumulation state of debris flow in different conditions are discussed.The analysis shows that it is reasonable to model the resistance term with the conceptual two-phase resistance.It also indicates the complicated structure composition and reflects veritably the real accumulation state of debris flow.Under a given material condition,the conceptual two-phase resistance term transforms into the resistance term of single material.The corresponding conclusion obtained is identical to the existing conclusion of analysis on a single material.

关 键 词：结构两相阻力 泥石流 堆积形态 

分 类 号：P642.2[天文地球—工程地质学] X141[天文地球—地质矿产勘探]