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苍南海域疏浚物倾倒悬浮物扩散特征现场试验分析

The Ocean Engineering(2013)

Cited 23|Views27
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Abstract
通过海上倾倒试验,了解疏浚物倾倒在苍南海域的悬浮物扩散特征.试验结果表明:1)疏浚物粒径特征值为倾倒点水体中悬浮物特征值的1.3 ~2.7倍,倾倒试验过程中水体中悬浮物粒径值的变化较好地体现了疏浚物在水体中的沉降过程;2)由倾倒引起的悬浮物浓度增加而形成的云团在15 ~30 min后漂离倾倒点,30 ~ 60 min后,云团基本消失,且由倾倒引起的悬浮物增量效应也基本结束;3)倾倒云团在顺流方向距倾倒点0.3~0.4 km处,表层水体悬浮物增量影响不明显,疏浚物倾倒造成水体悬浮物浓度增高的影响在顺流方向1.5 km左右基本结束.
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Key words
dispersion,sea area around Cangna,suspended matter,dredged material dumping
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