摘要
根据钱塘江河口治江围涂前和大规模治江围涂后现场实测的涌潮高度数据,对盐官以下河段大潮期涌潮高度的变化进行分析,结果表明,大规模治江围涂后的涌潮最高河段已由治江围涂前的新湾下移至大缺口段,并且大规模治江围涂后的涌潮最高值比治江围涂前增高了0.4 m,盐官河段增高0.1 m。盐官以上河段治江围涂后的涌潮高度变化,主要与径流对沙坎顶的冲淤密切相关,在其它条件相同时,治江围涂后的涌潮高度有所增大。这一结果与某些年份因涌潮增高,标准堤大量溢流等实例基本相符。
As a world famous spectacular scene of tidal bore of Qiantang estuary, at present it becomes a special focused problem that the height of the tidal bore decreases or increases after the large-scale regulation and reclamation on Qiantang estuany. Based on the data of the height of tidal bore measured on the spot before and after the action on Qiantang estuary, it shows that, during the strong tide, the reach of highest tidal bore is transformed from Xinwan to Daquekou and increases by 0.4 m after the action than before that of the reaches under Yanguan, and the reach in Yanguan increases by 0.1 m, while the variation on height of the tidal bore of the reachesup Yanguan is closely related with the status of the sandbank peak rushed and silted by runoff. It also shows the height of tidal bore increases under the same other conditions. The result conforms to the fact that the standard swawall overflows take place due to the height increment of the tidal bore after the regulation and reclamation in recent years.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2007年第3期385-389,共5页
Advances in Water Science
关键词
河口治理
围涂
涌潮高度
钱塘江
regulation on estuary
reclamation
height of tidal bore
Qiantang river
