粗化层厚度及其级配的研究  

Thickness and gradation of armoring layer

作　　者：王艳华[1] 程小兵[1] 乐培九[1] 

机构地区：[1]交通部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津300456

出　　处：《泥沙研究》2013年第3期14-18,共5页Journal of Sediment Research

基　　金：交通部西部交通科技项目(200732822471)

摘　　要：在分析活动层与粗化层厚度关系的基础上,根据活动层沙量平衡原理,建立了粗化层级配预报一步和多步计算关系式,该模式不仅可以用来计算冲刷过程中床沙级配调整,还可以同时计算出冲刷剖面和推移质输沙率变化,适用于中、细沙河床。经部分中、细沙河床水槽试验资料检验,计算精度良好。Based on the analysis of the relation between the active layer thickness and armoring layer thickness and according to the principle of active layer sediment balance, this article establishes the computation relation ships for one step and many steps forecast armoring layer gradation. The pattern is suitable for the gravel and sand river bed and for the fine sand river bed. It is not only useful to calculate the sand bed gradation adjust ment in the erosion process ,but also simultaneously to calculate the erosion profile and bed load discharge. It has been tested on some fine sand river beds in flumes, the computation accuracy of the pattern is good.

关 键 词：冲刷深度 推移质输沙率 活动层 粗化层级配 

分 类 号：TV141.1[水利工程—水力学及河流动力学]