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요약정보
洞庭湖草尾河航道碍航特性分析
Resource Type
Academic Journal
Authors
刘方舟
;
乾东岳
;
普晓刚
;
张明
Source
中国水运(上半月) / China Water Transport
. (9):119-121
Subject
草尾河
连续弯道
碍航特性
陡坎
数学模型
Language
Chinese
ISSN
1006-7973
Online Access
Full Text (CAJ - 경제/경영)
초록
洞庭湖草尾河航道因外部条件变化,在多次航道整治后枯水期再次成滩.为进一步认识草尾河航道碍航特性,采用平面二维水流数学模型,对洞庭湖草尾河航道开展了水流数值模拟计算.计算结果表明,草尾河下段约24.7km航段枯水期航深不足;枯水期水位落差集中在阿弥石至灵官咀河段,枯水期局部最大比降3.6‰,最大表面流速3.28m/s,急流成滩;阿弥石河段为连续弯道,上下湾顶对峙,流态紊乱,险滩碍航.即草尾河航道枯水期兼具浅、险、急多重碍航特性.采砂形成纵向陡坎是枯水期再次成滩的主要成因,建议进行采砂坑修复,同时扩能升级工程再次实施后应加强管理避免整治工程失效.
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