泥石流松散物质启动条件的分析与计算  

The Analysis and Calculation of Starting Conditions for the Loose Matters to Form Debris Flow

作　　者：白志勇[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《西南交通大学学报》2001年第3期318-321,共4页Journal of Southwest Jiaotong University

摘　　要：根据松散物质大都有一定固结程度的特点 ,分析了沟床纵坡、洪峰流量、松散物质饱和抗剪强度及剪切面积的影响 ,建立了松散物质启动条件的判别公式 ,为研究松散物质在不同条件下的活动性提供了一种计算方法 。According to the characteristic that most of the loose matters consolidate to a certain extent, the author studied the effects of the factors on the formation of debris flows, such as ditch grade, crest discharge, saturation resistance to shear and shear area of the loose matters. The discriminants for the loose matters to start are proposed. An application of the proposed method to some ravines along the Chengdu Kunming railway line is presented.

关 键 词：泥石流 松散体力学 启动条件 计算方法 

分 类 号：P642.23[天文地球—工程地质学]