Research on cohesive sediment erosion by flow: An overview  

作　　者：YongHui Zhu  JinYou Lu  HongZhi Liao  JiaSheng Wang  BeiLin Fan ShiMing Yao 

机构地区：[1] Changjiang River Scientific Research Institute, Changjiang Water Resources Commission, Wuhan, 430010, China [2] River Management Bureau, Changjiang Water Resources Commission, Wuhan, 430010, China

出　　处：《Science China(Technological Sciences)》2008年第11期2001-2012,共12页中国科学（技术科学英文版）

基　　金：the National Key Technology R&D Program of China (Grant Nos. 2006BAC14B02 and 2006BAB05B03);the National Basic Research Program (973 Program) of China (Grant No. 2007CB714106)

摘　　要：Erosion of cohesive sediment by flow is a very complicated phenomenon occurring worldwide. Understanding and modeling of the erosion process are important for many issues such as the breaching of embankments, riverbank stability, siltation of harbors and navigation channels, service life of reservoirs, distribution of (heavy metal) pollutants and water quality problems. In the last few decades, numerous studies have been done on the erosion of cohesive sediment by flow. Nevertheless, the factors affecting the erosion resistance of cohesive sediment are still not fully understood and the knowledge of the physics of cohesive sediment erosion is in- adequate, as a result the mathematical modeling of this erosion is far from satis- factory. In this paper an overview of the studies on the erosion resistance, erosion threshold and the erosion rate of cohesive sediment by flow is presented. The outcomes achieved so far from the studies and the existing problems have been analyzed and summarized, based on which recommendations are proposed for future research.Erosion of cohesive sediment by flow is a very complicated phenomenon occurring worldwide. Understanding and modeling of the erosion process are important for many issues such as the breaching of embankments, riverbank stability, siltation of harbors and navigation channels, service life of reservoirs, distribution of (heavy metal) pollutants and water quality problems. In the last few decades, numerous studies have been done on the erosion of cohesive sediment by flow. Nevertheless, the factors affecting the erosion resistance of cohesive sediment are still not fully understood and the knowledge of the physics of cohesive sediment erosion is inadequate, as a result the mathematical modeling of this erosion is far from satisfactory. In this paper an overview of the studies on the erosion resistance, erosion threshold and the erosion rate of cohesive sediment by flow is presented. The outcomes achieved so far from the studies and the existing problems have been analyzed and summarized, based on which recommendations are proposed for future research.

关 键 词：COHESIVE SEDIMENT EROSION EROSION resistance incipient MOTION EROSION rate FLOW 

分 类 号：S157[农业科学—土壤学]