| 泥沙颗粒生长生物膜后起动的实验研究——Ⅱ.起动流速计算 |
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| 引用本文： | 方红卫,尚倩倩,府仁寿,何国建.泥沙颗粒生长生物膜后起动的实验研究——Ⅱ.起动流速计算[J].水科学进展,2011,22(3):301-306. |
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| 作者姓名： | 方红卫 尚倩倩 府仁寿 何国建 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室, 北京100084 |
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| 基金项目： | 国家自然科学基金资助项目，水体污染控制与治理科技重大专项资助项目 |
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| 摘 要： | 泥沙颗粒生长生物膜后,起动流速发生了较大变化.根据生长生物膜后的泥沙起动流速实验数据,考虑天然水体中,生物膜填充于颗粒与颗粒之间形成除水以外新的介质,将生物膜的作用模化为生物膜作用产生的粘连力,再考虑生物膜随时间变化的特性以及基底物理特性的影响等因素,结合泥沙颗粒之间由于薄膜水产生的黏结力、重力等,研究了颗粒在滑动和滚...
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| 关 键 词： | 泥沙颗粒 起动流速 生物膜 黏结力 粘连力 薄膜水 |
| 收稿时间： | 2010-08-25 |
Experimental study of the effect of biofilm formation on sediment incipient motion:Ⅱ.Incipient velocity calculation |
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| FANG Hong-wei,SHANG Qian-qian,FU Ren-shou,HE Guo-jian.Experimental study of the effect of biofilm formation on sediment incipient motion:Ⅱ.Incipient velocity calculation[J].Advances in Water Science,2011,22(3):301-306. |
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| Authors: | FANG Hong-wei SHANG Qian-qian FU Ren-shou HE Guo-jian |
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| Affiliation: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The sediment incipient motion can be significantly affected by the presence of microbial biofilm growth.Using the experimental incipient velocity data collected under the influence of biofilm colonization,the incipient velocity formulas for the two types of sediments are derived for sliding and rolling motions.The thin water film theory is utilized to describe the cohesive force between sediment particles and the adhesive force generated by the biofilm in the formula derivation.Time variation characteristic... |
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| Keywords: | sediment incipient velocity biofilm cohesion adhesion thin water film |
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