泥石流细颗粒浆体的有效浓度
文献类型：期刊论文
| 作者 | 赵惠林; 陈英燕 |
| 刊名 | 泥沙研究
 |
| 出版日期 | 1992 |
| 期号 | 2页码:20-25 |
| 关键词 | 稀性泥石流 粘性泥石流 细颗粒 有效浓度 含沙量 粗颗粒 物理力学性质 成都山地灾害与环境研究所 中国科学院 颗粒组成 |
| ISSN号 | 0468-155X |
| 其他题名 | The Effective Concentration of Fine Particle Slurry of Debris Flow |
| 通讯作者 | 赵惠林 |
| 中文摘要 | 粘性泥石流和稀性泥石流中的细颗粒含量基本相同,但它们的浆体浓度和物理力学性质却差异甚大.本文将从泥石流的颗粒组成出发,分析粗颗粒在泥石流中的作用,提出能够反映粗颗粒影响的有效浓度概念,给出一个计算实例,以说明它的计算方法. |
| 英文摘要 | It is generally thought that viscous debris flow has a higher fine particle content than non-viscous debris flow, so its slurry concentration is much higher than the latter. In fact, the research shows that the fine particle content of viscous debris flow is nearly the same as that of non-viscous debris flow. For example in our paper, their fine particle contents （d<1.0mm） both are 500800kg/m2. Now that the contents are the same approximately, why are their slurry concentrations very different? Obviously, this is caused by different coarse particle content, the coarse particle content of viscous debris flow is much higher by comparison.Naturally, because coarse particles reduce the space （or volume） occupied by fine particle and water, they can raise the effective concentration of fine particle slurry, thus influencing indirectly the physical characteristics of debris flow. These are the important contribution of coarse particles to debris flow.The coarse particles can raise the concentration of fine particle slurry. On the contrary, fine particle slurry with higher concentration is able to decrease the settling rate of coarse particles and make them maintain in slurry. Just the action of coarse and fine particles together can engage viscous debris flow to reach very high sediment concentration.The paper gives a concept of effective concentration C（?）=Vf/（1-Vc）,here Vf is the volume of fine particles per unit volume and Vc is the volume of coarse ones. Effective concentration can reflect the influence of coarse particle. Basing this concept, many phenomena of debris flow are easy to be explained. At last, an example of calculation mothed of C（?） is introduced. |
| 学科主题 | 灾害学 |
| 语种 | 中文 |
| 公开日期 | 2011-08-24 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3392]  |
| 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 | 中国科学院成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 赵惠林,陈英燕. 泥石流细颗粒浆体的有效浓度[J]. 泥沙研究,1992(2):20-25. |
| APA | 赵惠林,&陈英燕.(1992).泥石流细颗粒浆体的有效浓度.泥沙研究(2),20-25. |
| MLA | 赵惠林,et al."泥石流细颗粒浆体的有效浓度".泥沙研究 .2(1992):20-25. |
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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