泥石流体表面积浓度计算
文献类型：期刊论文
| 作者 | 陈英燕; 赵惠林 |
| 刊名 | 山地研究
 |
| 出版日期 | 1992 |
| 卷号 | 10期号:4页码:253-256 |
| 关键词 | 泥石流体 表面积浓度 粒径分布 容重 |
| ISSN号 | 1000-002X |
| 其他题名 | CALCULATION ON SURFACE AREA CONCENTRATION OF DEBRIS FLOW BODY |
| 通讯作者 | 陈英燕 |
| 中文摘要 | 表面积浓度C是一种新的表征泥石流体特性的参数。它定义为单位体积泥石流体中固体颗粒表面积总和与下余的水的体积之比。它的量纲是1/长度。C可根据泥石流体容重及固体颗粒粒径分布曲线积分求得。应用这个参数可对泥石流加以分类,也便于对地区、组成及浓度皆不同的泥石流体进行比较等。 |
| 英文摘要 | Surface area concentration Csa is a new parameter for indicating the characteristics of debris flow. It is defined the ratio of the total surface area of solid grains in a unit volume of debris flow to water volume contained in this unit volume. Its dimention is 1/L. This parameter can comprehensively reflect the concentration and solid grain composition in debris flow.Csa can be obtained by integral method with the unit weight νc of debris flow and particle size distribution curve. Whole calculation may be done on two steps. At first,A100, the sum totalof surface area of all solid particles in weight of 100g,is calculated by integral along whole par-tide size distribution curve,i, e. A100 = dP,where D is grain diameter,P is weightaccumulated percent ,y. is the special gravity of solid particle. Secondly, surface area concentra tion ,here K is the coefficient of shape correction.Csa is able to be applied in classification of debris flow. For example at Jiangjia Ravine, Dongchuan,Yunnan,China,when Csa<2,500/cm,the debris flow is non-viscous,Csa=2,500-3,500/cm is transitional and Csa>3,500/cm is viscous. And using this parameter,debris flows with different concentrations, compositions or in diverse regions can be conveniently compared. For instance, debris flows in three regions, their yf were correspondently 2.20,2.20,1.69 (g/cms) ,the first and the third appeared very viscous,but the second almost wasn’t viscous,because the first and the third Csa are about 7,000/cm,and the second Csa is near 3,000/cm. Some experimental phenomena are also able to be explained by adopting Csa, and explanation for those phenomena is difficult if applying νc. Such as, the difference of setting velocity of sediment in bentonite and kaolin slurry with the same volume concentration; the change of critical volume concentration Cv in rheological experiment. This Cv means that slurry Theological behaviour appears time-dependent effect when slurry concentration excesses this Cv,and so on. |
| 学科主题 | 灾害学 |
| 收录类别 | CSCD ; 北大中文核心 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:182775 |
| 公开日期 | 2011-09-06 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3444]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 作者单位 | 中国科学院、水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 陈英燕,赵惠林. 泥石流体表面积浓度计算[J]. 山地研究,1992,10(4):253-256. |
| APA | 陈英燕,&赵惠林.(1992).泥石流体表面积浓度计算.山地研究,10(4),253-256. |
| MLA | 陈英燕,et al."泥石流体表面积浓度计算".山地研究 10.4(1992):253-256. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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