IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleA preliminary Study on the Material Composition of Debris Flows in Hunshui Gully
张信宝; 何淑芬
Publication Place重庆
Keyword泥石流体 浑水沟 盈江 云南
AbstractThe properties of a debris flow are mainly determined by the degree of freedom of solid particles forming the debris flow —— free ratio of porosity (ec), accoring to which, debris flows may be classified: ec<0.05-0.01 is viscous flow; 0.05-0.10<ec<0.37 subviscous flow; 0.37<ec<0.70 micro-viscous flow; and 0.70<ec<1.0 common sediment-charging flow. The mechanical composition of solid particles in viscous and subviscous flows is determined by the orginal earthe, but the mechanincal composition of the microviscous and common sediment-charging flows is closely related with the turbulence of the flow. Under natural conditions, the clay particles in a debris flow appear as aggrerates and the play the role of cohesion and lubrication. The concentration of clay particles plays an important part in forming the structure of viscous and subviscous flows. The water in a debris flow may be classified into tie water, enclosed free-water and gravity free-water. A viscous flow does not contain gravity free-water; a subviscous flows contains a lot of enclosed free-wate and a small amount of gravity free-water; and the two others do not contain enclosed free-water.
Other Abstract浑水沟泥石流主要为粘性、亚粘性泥石流,容重分别为1.89-2.2吨/立方米与1.69-1.94吨/立方米。然而,每次泥石流过程的始末,大多为稀性泥石流,流量2-3立方米/秒,容重为1.35-1.69吨/立方米;有时为挟沙水流,容重为1.01-1.35吨/立方米。
Document Type专著章节文集论文
Recommended Citation
GB/T 7714
张信宝,何淑芬. 云南盈江浑水沟泥石流体组成的初步研究. 重庆:科学技术出版社重庆分社,1981:67-73.
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