Estuarine Muds manual
Estuarine Muds manual
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发表时间：
1988-02
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通讯作者：
E. Delo
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作者：
E. Delo
本报告是对1986年12月发表的《河口泥浆的水利工程特性》报告(编号SR77)的工作手册部分的更新，该报告是根据Hydraulics Research Ltd(HR)进行的研究并邀请该行业的最终用户提出意见而编写的。自第SR77号报告发表以来，HR已经开展了大量的研究计划，并获得了关于潮汐周期中泥浆的行为(参考文献2)、流水沉积物的沉积(参考文献20)、软弱泥层的固结(参考文献26)、沙子对固结和侵蚀过程的影响(参考文献27)以及泥层在波浪下的响应(参考文献32和33)等方面的宝贵信息。这些发现已被纳入这本修订的手册中。第SR77号报告广泛分发给咨询工程师、承包商、学者和人力资源工作人员，征求他们对报告的技术内容、风格和可用性的意见。大约一半的收件人答复了有益的意见，在许多情况下还提供了详细的意见。总体而言，总体印象是积极和令人鼓舞的。本报告在起草时尽可能考虑到了这些意见。本报告以工程形式总结了粘性泥沙特性的主要过程，即淤积、固结和侵蚀。所提供的数据旨在向实践工程师展示在每个过程中哪些参数是重要的，并使人们能够在有限的现场条件知识的基础上对沉积、固结和侵蚀的速率进行广泛的估计。粘性沉积物的行为在数量上从一个来源到另一个来源确实有很大差异。因此，工程师必须认识到，根据本文提供的数据进行的估计很可能会有半个数量级的误差。对于大多数涉及粘性泥沙的严重工程问题，必须进行详细的研究。这将涉及以下一些技术：实地测量、沉积物的实验室测试、水动力和泥沙输送的数值模拟以及水动力学的物理模拟。
This report is an update of the working manual part of 'The hydraulic engineering characteristics of estuarine muds' Report No SR77, December 1986, made in the light of research conducted at Hydraulics Research Ltd (HR) and invited comments received from end users in the industry. A considerable research programme has been undertaken by HR since the publication of Report No SR77 and valuable information has been gained in respect of the behaviour of mud during tidal cycles (Ref 2), the deposition of sediment from flowing water (Ref 20), the consolidation of weak mud beds (Ref 26), the effect of sand on the consolidation and erosion processes (Ref 27) and the response of mud beds under waves (Refs 32 and 33). These findings have been incorporated into this revised manual. Report No SR77 was widely circulated to consulting engineers, contractors, academics and staff at HR, with a request for their views on the reports technical content, style and usability. Approximately half of the recipients replied with helpful and, in many cases detailed comments. Overall, the general impression was positive and encouraging. This report has been drafted with these comments taken into account wherever possible. This report summarises, in an engineering form, the main processes of cohesive sediment behaviour, namely, deposition, consolidation and erosion. The data presented are intended to show the practicing engineer which parameters are important in each of the processes and to enable broad estimates of the rates of deposition, consolidation and erosion to be made based on a limited knowledge of the field conditions. The behaviour of cohesive sediment does vary considerably in quantitative terms from one source to another. Therefore, it is crucial that the engineer appreciates that estimates based on the data presented herewith may well be in error by half an order of magnitude. For most serious engineering problems involving cohesive sediment it would be essential to undertake a detailed study. This would involve some of the following techniques: field measurements, laboratory testing of sediment, numerical modelling of hydrodynamics and sediment transport and physical modelling of hydrodynamics.