| 泥沙颗粒团沉速 |
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| 引用本文： | 匡翠萍,郑宇华,顾杰,马丹青.泥沙颗粒团沉速[J].同济大学学报(自然科学版),2016,44(12):1845-1850. |
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| 作者姓名： | 匡翠萍 郑宇华 顾杰 马丹青 |
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| 作者单位： | 同济大学 土木工程学院， 上海 200092,上海海洋大学 海洋科学学院， 上海 201306,上海海洋大学 海洋科学学院， 上海 201306,上海海洋大学 海洋科学学院， 上海 201306 |
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| 基金项目： | 国家重点基础研究发展计划（2012CB957704） |
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| 摘 要： | 针对现有的泥沙沉速公式大多适用于单颗粒泥沙沉降的情形,基于前人对单颗粒泥沙沉速规律的研究成果,利用试验测得不同泥沙颗粒团在水中沉降时的沉速数据,引入泥沙颗粒团特征粒径及附加粒径2个因子,对多个广泛运用的单颗粒泥沙沉速公式进行了修正.用修正后的公式计算得到的泥沙颗粒团沉速与用试验测得的泥沙颗粒团沉速较接近,可推广运用到计算泥沙颗粒团在水中的沉降速率.
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| 关 键 词： | 泥沙 颗粒团 沉速 特征粒径 附加粒径 |
| 收稿时间： | 2016/3/11 0:00:00 |
| 修稿时间： | 2016/11/6 0:00:00 |
Settling Velocity of Sediment Particle Clouds |
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| KUANG Cuiping,ZHENG Yuhu,GU Jie and MA Danqing.Settling Velocity of Sediment Particle Clouds[J].Journal of Tongji University(Natural Science),2016,44(12):1845-1850. |
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| Authors: | KUANG Cuiping ZHENG Yuhu GU Jie and MA Danqing |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China,College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China and College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China |
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| Abstract: | The most of previous sediment settling velocity formulas were suitable for single sediment particle. Based on the previous research results on single sediment particle settling velocity laws and the experimental data of sediment particle cloud during the settlement process in water body, the formulas for calculating the settling velocity of sediment particle cloud were proposed by introducing two factors, i.e., the characteristic particle size of sediment particle cloud and additional particle size, to correct the existing single sediment particle settling velocity formulas. The settling velocity values of sediment particle cloud calculated by the corrected formulas were very close to the experimentally measured settling velocity values of sediment particle cloud, which indicates the corrected formula can be applied to calculate the settling velocity of sediment particle clouds. |
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| Keywords: | sediment particle cloud settling velocity characteristic particle size additional particle size |
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