基于浆体的泥石流容重计算  

Calculation of the debris flow concentration based on debris flow slurry

作　　者：陈宁生[1,2] 杨成林[1,2,3] 李欢[4] 

机构地区：[1]中国科学院山地灾害与地表过程重点实验室,成都610041 [2]中国科学院水利部成都山地灾害与环境研究所,成都610041 [3]中国科学院研究生院,北京100049 [4]四川大学,成都610065

出　　处：《成都理工大学学报（自然科学版）》2010年第2期168-173,共6页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：中国科学院"西部之光"联合学者项目;中国科学院知识创新工程重要方向项目(KZCX2-YW-332)

摘　　要：给出了一种运用于无观测资料的泥石流沟的泥石流容重计算方法。推导的理论公式表明由泥石流的浆体容重和细颗粒含量可以计算泥石流容重,而泥石流浆体的上限粒径决定了浆体容重和细颗粒含量的取值;提出以泥石流沟边壁、岩壁的固体黏结物的最大粒径作为上限粒径,还提出了浆体容重和细颗粒含量的确定方法,其中浆体容重值主要根据浆体的屈服应力一致性得到。实例计算表明该方法与现在流行的计算方法有较好的吻合。This paper presents a method to calculate debris flow concentration in debris flow channel without observation data. The derived formula can use the debris flow slurry concentration and fine grain content to calculate the debris flow concentration, and the upper-limit size diameter of debris flow slurry determines the concentration and the fine grain content. It also puts forward a new method to use the maximal diameter of the debris flow deposit on the cliff as the upper-limit size diameter, and points out the way to determine the debris flow slurry concentration and the fine grain content. The debris flow slurry concentration is mainly determined by the consistency of slurry＇s yield stress. And the calculation method has a good inosculation with the popular calculation method in practice.

关 键 词：泥石流 浆体 容重 上限粒径 

分 类 号：P642.23[天文地球—工程地质学]