摘要
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。
The researchers of this paper wanted to know the dispersion character of dredged material after a dumping test in the sea area around Cangnan.The results indicated：（1）The grain size of dredged material was 1.3~2.7 times as that of suspended matter in the dumping spot.The change of grain size ideally showed the sedimentation course of dumping material in seawater.（2）The suspended matter in seawater,because of dumping activity,left from the dumping spot in 15~30 min,and the effects of suspended matter concentration in seawater disappeared in 30~60 min after dumping activity.（3） The suspended matter concentration of the cloud in surface seawater was not significantly different from that of the dumping spot,which was 0.3~0.4 km from the dumping spot in the orientation of ocean current,and the influence of suspended matter concentration of the cloud in seawater disappeared after the cloud was drifted to the distance 1.5 km from the dumping spot in the orientation of ocean current.
出处
《海洋工程》
CSCD
北大核心
2013年第3期101-106,共6页
The Ocean Engineering
基金
海洋公益性行业科研专项经费资助项目(201105010-14)
关键词
疏浚物倾倒
悬浮物
扩散特征
苍南海域
dredged material dumping
suspended matter
dispersion
sea area around Cangna
