论文部分内容阅读
本文依据营口鲅鱼圈港倾废区８个航次的疏浚物监测和追踪调查数据，深入了解了倾废海区中悬浮物、浊度、ＣＯＤ和ｐＨ等指标随潮汐变化的时空分布规律。调查结果表明：虽然该倾废区实施疏浚物倾倒已达４ａ，但该区中除悬浮物含量略有增加外，其他指标（如ＣＯＤ，ＤＯ，ｐＨ等）基本处于一类海水正常值范围。疏浚物倾倒后２０ｍｉｎ内可引起水中悬浮物和浊度含量的急剧上升，对海水的ｐＨ和ＣＯＤ含量也有一定程度的影响．表面浑水团主要随表层流和风向运移，悬浮物和浊度降至海区背景浓度的时间约需３５～４５ｍｉｎ，迁移距离可达１．３ｎｍｉｌｅ，影响面积通常可达０．３ｋｍ２．
Based on the dredging materials monitoring and tracing survey data of 8 voyages in the dumping area of Bayuquan Bay of Yingkou, this paper deeply understands the spatial and temporal distribution of the indexes of tidal, such as suspended matter, turbidity, COD and pH in dumping waste area. The survey results show that although the dumping of dredged material has reached 4a in the dumping area, the content of suspended solids in the area has slightly increased, while other indicators (such as COD, DO, pH, etc.) are basically in the normal range of seawater. Dredged substance dumping within 20min can cause a sharp rise in suspended solids and turbidity content of the seawater pH and COD content also have a certain degree of impact. Muddy water surface mainly migrates with surface flow and wind direction. The time for the suspended matter and turbidity to drop to the sea background concentration is about 35-45min, the migration distance can reach 1.3nmile, and the affected area is usually up to 0.3km2.