| 高浓度黏性泥石流堆积层理结构中筛积层和粗化层形成机理的研究 |
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| 引用本文： | 王裕宜,詹钱登,韩文亮,邹仁元.高浓度黏性泥石流堆积层理结构中筛积层和粗化层形成机理的研究[J].沉积学报,2003,21(2):205-210. |
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| 作者姓名： | 王裕宜 詹钱登 韩文亮 邹仁元 |
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| 作者单位： | 1.中国科学院成都山地灾害与环境研究所中国科学院东川泥石流观测站 成都 610041; |
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| 基金项目： | 国家自然科学基金项目 (批准号 :40 0 710 10 )资助 |
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| 摘 要： | 根据高浓度黏性泥石流的观测资料,应用不同类型黏性泥石流的流变特性和流体结构的分类指标-流核比,对高浓度黏性泥石流堆积中的混杂层、筛积层和粗化层理结构进行了成因差异分析。侧重分析了砾石质点在高浓度黏性泥石流蠕动流场中作向上垂直运动的魏森伯效应,并在表面富集形成了筛积层的成因,及其它与粗化层结构的区别。
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| 关 键 词： | 黏性泥石流 流变特性 流核比 魏森伯效应 筛积层 粗化层 |
| 文章编号： | 1000-0550(2003)02-0205-06 |
| 收稿时间： | 2002-02-15 |
| 修稿时间： | 2002年2月15日 |
A Study on Forming Mechanism of the Bedding Structure of the Gravel Accumulated at Surface, and Rough Bedding Structure in Deposits of Viscous Debris Flows with Hyperconcentration |
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| WANG Yu-yi,JAN Chyan-deng,HAN Wen-liang,ZOU,Ren-yuan.A Study on Forming Mechanism of the Bedding Structure of the Gravel Accumulated at Surface, and Rough Bedding Structure in Deposits of Viscous Debris Flows with Hyperconcentration[J].Acta Sedimentologica Sinica,2003,21(2):205-210. |
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| Authors: | WANG Yu-yi JAN Chyan-deng HAN Wen-liang ZOU Ren-yuan |
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| Institution: | 1.Chengdu Institute of Mountain hazards, & Environment ,CAS, Dongchuan Debris Flow Observation & Research Station, CAS,Chengdu 610041;2.Department of Hydraulics & Ocean engineering, Cheng Kung University, Tainan 70101;3.Department of Hydraulics Engineering, Tsinghua University, Beijing 100084;4.Chengdu Institute of Mountain hazards & Environment, CAS ,Chengdu 610041 |
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| Abstract: | According to observational data of viscous debris flows with hyper-concentration , distinct causes of formation for different graded bedding in debris flow deposits have been analyzed by use of its rheology and the ratio of flow plug . The paper specially analyzed that the gravel in squirm condition of hyper-concentration viscous flows would tend to have vertical motion due to the effect of Weissenberg , then they would form the bedding structure of the gravel accumulated at surface, and they are different from rough bedding structure. |
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| Keywords: | viscous debris flow rheology ratio of flow plug the effect of Weissenberg the gravel accumulated at surface rough bedding texture layer |
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