Multi-Step Prediction Modeling on Riverbeds Scouring and Armoring
-
摘要: 运用概率论与力学分析相结合的方法,提出了考虑非均匀沙隐暴效应的泥沙起动概率计算模式,并在已有研究成果的基础上,建立了以泥沙起动概率为核心的河床冲刷粗化多步预报模式,该模式可同时满足预报粗化层级配和冲刷深度的要求。实测资料验证表明,此模式具有较好的预报效果。Abstract: In this paper,based on the former studies and considering the propability theory and mechanical analysis method,as well as shelter-exposure effects,a pattern for calculating the probability of incipient motion in non-uniform bed material is established.And a simple model found on the pattern for multi-step predicting the process of scouring and armoring is proposed here in,it should be a useful tool for forecasting the armoring-layer size distribution and scouring depth,while uses many observed data to prove it and yields satisfactory results.
-
-
[1] 1 张小峰,谢葆玲.泥沙起动概率与起动流速.水利学报.1995,4
2 张小峰.均匀沙起动标准初探.人民长江.1995,7
3 张小峰,崔承章.均匀沙起动判别条件和推移质输沙率.泥沙研究.1996,2
4 孙志林.非均匀沙输移的随机理论.武汉水利电力大学博士论文.1996
5 谢鉴衡,陈媛儿.非均匀沙起动规律初探.武汉水利电力学院院报.1988,3
6 谢鉴衡主编.河流泥沙工程学(上册).水利出版社,1981
7 彭 凯,陈远信.非均匀沙的起动问题.成都科技大学学报.1986,2
8 尹学良.清水冲刷粗化研究.水利学报.1963,1
9 冷 魁.非均匀沙卵石起动流速及输沙率的研究.武汉水利电力大学博士论文.1994
10 Robert Ettna.Sampling Armor-Layer Sediments,J.of Hydr.Eng.ASCE.1984,110(7)
11 Gessler J. Stochastic Aspects of Incipient Motion on Riverbeds.In:Stochastic Approach to Water Resourtes.1976,2
12 Hong-Yuan Lee and a.Jacob Odard.Simulation of Bed Armoring in Alluvial Channels,J.of Hydr.Eng.ASCE.1986,112(9)
13 Little W C, Mayer P G.Stability of Channels Beds By Armoring.J.of Hydr.Div.ASCE.1976,102(HY11)
计量
- 文章访问数: 182
- HTML全文浏览量: 32
- PDF下载量: 402
下载:
