CAJ | 학술논문

利用Delft3d模拟了鳌江口江南围垦工程对邻近海域的水动力影响，从工程前后的枯、洪水期的纳潮量、水位、流速过程及余流4个角度分析讨论围垦对该水域的泄洪及余流的影响。工程导致河口过水断面减小，淤使深泓线涨落潮流速有着不同程度的增大；于洪峰影响时，河口水位壅高，低潮位上升显著，影响河水下泄，易引发内涝，并导致涨潮历时缩短、落潮历时延长；盂余流受工程影响较大，工程使余流指向河口上游，余流值增大近一倍，而径流削弱了这种影响。榆工程后，河口断面涨落潮潮量继续保持基本平衡，洪水影响时落潮潮量略大于涨潮潮量。
이용Delft3d모의료오강구강남위은공정대린근해역적수동력영향，종공정전후적고、홍수기적납조량、수위、류속과정급여류4개각도분석토론위은대해수역적설홍급여류적영향。공정도치하구과수단면감소，어사심홍선창락조류속유착불동정도적증대；우홍봉영향시，하구수위옹고，저조위상승현저，영향하수하설，역인발내로，병도치창조력시축단、락조력시연장；우여류수공정영향교대，공정사여류지향하구상유，여류치증대근일배，이경류삭약료저충영향。유공정후，하구단면창락조조량계속보지기본평형，홍수영향시락조조량략대우창조조량。
In this paper,the hydrodynamics of Aojiang estuary was modeled based on Delft3d. The reclamation influence was analyzed from tidal prism, tidal level, velocity and residual flow. The reclamation project lead to the decreasing of section area. It was pointed out that the flood and ebb velocity increased significantly. During the period of the river flood,the tidal level,especially the low tidal level rises,which affects the water discharge and results in the waterlogging. The duration of flood decreases, and the duration of ebb increases due to the river flood. The residual flow is directly affected by the reclamation. The residual flow points upstream,and the value nearly doubles. It is weakened by the discharging. The tidal volume of flood and ebb keeps the near balance. Ebb tidal volume is slightly higher than that of flood tidal during the river flood.