| 非均匀沙起动标准的比较研究 |
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| 引用本文： | 唐造造,方铎.非均匀沙起动标准的比较研究[J].四川大学学报(工程科学版),1997(4). |
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| 作者姓名： | 唐造造 方铎 |
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| 作者单位： | 四川联合大学高速水力学国家重点实验室 |
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| 基金项目： | 国家自然科学基金,中国长江三峡工程开发总公司资助 |
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| 摘 要： | 本文介绍了泥沙起动的多种判断标准。文中指出，定性标准不宜作为非均匀沙的分级起动标准。对推移质输沙率标准和取样标准的比较研究结果表明，ＰＫＭ标准要求的输沙率偏低，就试验的实际起动粒径而言，ＡＷ标准要求的输沙率比ＨＨ标准要求的输沙率低。最后对如何采用起动标准提出了建议
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| 关 键 词： | 非均匀沙 分级起动 起动标准 |
A Comparative Study on Incipient Motion Criteria of Non-uniform Sediments |
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| Tang Zaozao,Fang Duo.A Comparative Study on Incipient Motion Criteria of Non-uniform Sediments[J].Journal of Sichuan University (Engineering Science Edition),1997(4). |
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| Authors: | Tang Zaozao Fang Duo |
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| Affiliation: | Tang Zaozao Fang Duo |
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| Abstract: | In this paper,several kinds of criteria have been introduced to define the incipient motion of sediments. It has been pointed out that the qualitative criteria is not suitable to be used as a incipient motion criteria for size fractions of non-uniform sediments. The comparative study on the bedload transport rate criteria and bedload sampling criteria indicates that the transport rate for PKM criteria is lower than that for reality. Corresponding to the real incipient diameter,the bedload transport rate for AW criteria is lower than that for HH criterion.At last, proposals have been presented for the utilization of incipient motion criteria. |
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| Keywords: | non uniform sediment incipient motion of size fractions incipient motion criteria |
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