河道采砂对河道及涉水建筑物的影响研究

Research review on impact of sand mining on river channel and water involved structures

为研究河道采砂对河道及其周边涉水建筑物的具体影响及作用机理,通过归类分析和总结发现,大规模的河道采砂不仅破坏天然河床结构,改变河道正常的物质输运过程和冲淤规律,干扰河流自然演变,威胁河道的行洪、通航、自身稳定,而且会对相关涉水建筑物及河流生态系统产生影响。侧重阐述了河道采砂影响的作用机理,并针对现阶段河道采砂存在的问题及缓解河道采砂带来的影响提出了对策措施。

Large market demand results in increasing sand mining in river channels.In order to research the impact of sand mining on river channel and water involved structures,through summarizing the related research progress of sand mining at home and abroad in recent decades,it is discovered that large-scale sand mining in river channels not only damages the riverbed structure,changes the normal material transport and scouring-deposition laws of rivers,influences the natural evolution of rivers,threats flood discharge safety,navigation safety and river stability,but also produces uncertain impact on water involved structures and river ecological system.From 3 aspects of sand mining influences on river channel,water involved structures and river ecological system,this paper presents the impact mechanism and puts forward the countermeasures in the light of the existed problems to mitigate the impact.