坝下沙卵石河床河工模型设计及应用  

Design and application of sand pebble bed river model of downstream of dam

作　　者：茆长胜 游强强 赵德玉 

机构地区：[1]长江航道规划设计研究院,湖北武汉430011

出　　处：《水运工程》2014年第7期104-109,共6页Port & Waterway Engineering

摘　　要：三峡水库蓄水运用后,坝下河道的水沙条件发生了重大变化,使坝下游沙卵石河段的河势演变规律发生变化。通过总结、分析实测资料及前人研究成果,针对坝下河段床沙组成特点,采用双层铺沙法进行物理模型试验研究,较好地复演了本河段河势变化,为开展坝下沙卵石浅滩治理研究提供了支撑。After impoundment of the Three Gorges reservoir, the incoming water and sediment conditions of its downstream river reach are changed. Consequently, changes occur in the riverbed evolution. On the basis of measurements and research findings by predecessors, aiming at the downstream reach of bed sediment composition, in order to study the riverbed evolution, we carry out physical model test by the double sand method to study the variation of river regime of the reach, which provides reference for the the next stage work.

关 键 词：河势演变 沙卵石河段 双层铺沙 物理模型 

分 类 号：U612[交通运输工程—船舶及航道工程]